TK112xxB VOLTAGE REGULATOR WITH ON/OFF SWITCH FEATURES APPLICATIONS High Voltage Precision at 2.0% Active High On/Off Control Very Low Dropout Voltage 80 mV at 30 mA Very Low Noise Very Small SOT-23L or SOT-89 Surface Mount Packages Internal Thermal Shutdown Short Circuit Protection Battery Powered Systems Cellular Telephones Pagers Personal Communications Equipment Portable Instrumentation Portable Consumer Equipment Radio Control Systems Toys Low Voltage Systems DESCRIPTION The TK112xxB is a low dropout linear regulator with a builtin electronic switch. The internal switch can be controlled by TTL or CMOS logic levels. The device is in the "on" state when the control pin is pulled to a logic high level. An external capacitor can be connected to the noise bypass pin to lower the output noise level to 30 Vrms. An internal PNP pass transistor is used to achieve a low dropout voltage of 80 mV (typ.) at 30 mA load current. The TK112xxB has a very low quiescent current of 170 A at no load and 1 mA with a 30 mA load. The standby current is typically 100 nA. The internal thermal shut down circuitry limits the junction temperature to below 150 C. The load current is internally monitored and the device will shut down in the presence of a short circuit or overcurrent condition at the output. The TK112xxB is available in either a 6-pin SOT-23L or a 5-pin SOT-89 surface mount package. TK112xxB CONTROL 20 P NOISE BYPASS SOT-23L NOISE BYPASS GND SOT-89 ORDERING INFORMATION TK112 GND CONTROL GND VOUT VOUT GND VIN B BLOCK DIAGRAM Tape/Reel Code Voltage Code Temp. Code Package Code VIN VOLTAGE CODE PACKAGE CODE: 13 = 1.3 V 14 = 1.4 V 15 = 1.5 V 16 = 1.6 V 17 = 1.7 V 18 = 1.8 V 19 = 1.9 V 20 = 2.0 V 21 = 2.1 V 22 = 2.2 V 23 = 2.3 V 24 = 2.4 V 25 = 2.5 V 26 = 2.6 V 27 = 2.7 V 28 = 2.8 V 29 = 2.9 V 30 = 3.0 V 31 = 3.1 V 32 = 3.2 V M: SOT-23L U: SOT-89 33 = 3.3 V 34 = 3.4 V 35 = 3.5 V 36 = 3.6 V 37 = 3.7 V 38 = 3.8 V 39 = 3.9 V 40 = 4.0 V 41 = 4.1 V 42 = 4.2 V 43 = 4.3 V 44 = 4.4 V 45 = 4.5 V 46 = 4.6 V 47 = 4.7 V 48 = 4.8 V 49 = 4.9 V 50 = 5.0 V 55 = 5.5 V 80 = 8.0 V VIN NOTE 1: 1.3 V to 1.9 V available in SOT-23L package only. VOUT TAPE/REEL CODE L: Tape Left (SOT-23L) B: Tape Left (SOT-89) THERMAL PROTECTION TEMP. CODE: C: -30 to +80 C I: -40 to +85 C CONTROL NOTE 2: 1.3 V to 2.4 V available in C temperature code (-30 to +80 C) only. October 1999 TOKO, Inc. This Material Copyrighted By Its Respective Manufacturer BANDGAP REFERENCE GND NOISE BYPASS Page 1 TK112xxB ABSOLUTE MAXIMUM RATINGS TK112xxBC (VOUT 2.0 V) Supply Voltage ......................................................... 16 V Power Dissipation SOT-23L (Note1) .................. 600 mW Power Dissipation SOT-89 (Note1) .................... 900 mW Reverse Bias ............................................................ 10 V Storage Temperature Range ................... -55 to +150 C Operating Temperature Range ...................-30 to +80 C Operating Voltage Range ............................ 1.8 to 14.5 V Junction Temperature ........................................... 150 C TK112xxBC ELECTRICAL CHARACTERISTICS (VOUT 2.0 V) Test conditions: TA = 25 C, unless otherwise specified. SYMBOL PARAMETER TEST CONDITIONS IQ Quiescent Current IOUT = 0 mA, Excluding ICONT ISTBY Standby Current VIN = 8 V, Output OFF VOUT Output Voltage IOUT = 30 mA Line Reg Line Regulation Load Reg Load Regulation MIN TYP MAX UNITS 170 250 A 0.1 A See Table 1 V VOUT 5.5 V, (Note 2) 3.0 20 mV VOUT 5.6 V, (Note 2) 15 40 mV IOUT = 1 to 60 mA, (Note 2) 6 30 mV IOUT = 1 to 100 mA, (Note 2) 18 60 mV IOUT = 1 to 150 mA, (Note 2) 23 90 mV IOUT = 60 mA, (Note 2) 0.12 0.20 V IOUT = 150 mA, (Note 2) 0.26 0.39 V VDROP Dropout Voltage IOUT Continuous Output Current (Note 2) 150 mA IOUT(PULSE) Pulse Output Current 5 ms pulse, 12.5 % duty cycle 180 mA RR Ripple Rejection f = 400 Hz, CL = 10 F, CN = 0.1 F, VIN = VOUT + 1.5 V, IOUT = 30 mA, VRIPPLE = 100 mVrms, (Note 3) 60 dB VNO Output Noise Voltage 10 Hz f 80 kHz, CL = 10 F, CN = 0.1 F, VCN = VOUT + 1.5 V, IOUT = 60 mA, (Notes 3,4) 30 Vrms Vref Noise Bypass Terminal Voltage 1.25 V VOUT /T Temperature Coefficient 40 ppm/ C IOUT = 10 mA CONTROL TERMINAL SPECIFICATIONS ICONT Control Current VCONT = 1.8 V, Output ON VCONT(ON) Control Voltage ON Output ON VCONT(OFF) Control Voltage OFF Output OFF 12 35 1.8 A V 0.6 V Note 1: When mounted as recommended. Derate at 4.8 mW/C for SOT-23L and 6.4 mW/C for SOT-89 packages for operation above 25C. Note 2: Refer to "Definition of Terms." Note 3: Ripple rejection and noise voltage are affected by the value and characteristics of the capacitor used. Note 4: Output noise voltage can be reduced by connecting a capacitor to a noise pass terminal. Gen. Note: Parameters with min. or max. values are 100% tested at TA = 25 C. Page 2 This Material Copyrighted By Its Respective Manufacturer October 1999 TOKO, Inc. TK112xxB ABSOLUTE MAXIMUM RATINGS TK1121xBC (VOUT 1.9 V) Supply Voltage ......................................................... 16 V Power Dissipation SOT-23L (Note1) .................. 600 mW Power Dissipation SOT-89 (Note1) .................... 900 mW Reverse Bias .............................................................. 7 V Storage Temperature Range ................... -55 to +150 C Operating Temperature Range ................... -30 to +80 C Operating Voltage Range ............................ 1.8 to 14.5 V Junction Temperature ........................................... 150 C TK1121xBC ELECTRICAL CHARACTERISTICS (VOUT 1.9 V) Test conditions: TA = 25 C, unless otherwise specified. SYMBOL PARAMETER TEST CONDITIONS IQ Quiescent Current IOUT = 0 mA, Excluding ICONT ISTBY Standby Current VIN = 8 V, Output OFF VOUT Output Voltage IOUT = 30 mA Line Reg Line Regulation (Note 2) Load Reg Load Regulation MIN TYP MAX UNITS 170 250 A 0.1 A See Table 2 V 3.0 20 mV IOUT = 1 to 60 mA, (Note 2) 6 30 mV IOUT = 1 to 100 mA, (Note 2) 18 60 mV 130 mA VIN 2.6 V, (Note 2) 150 mA 180 mA 2.4 V VIN 2.6 V, (Note 2) IOUT Continuous Output Current IOUT(PULSE) Pulse Output Current 5 ms pulse, VIN 2.6 V, 12.5 % duty cycle RR Ripple Rejection f = 400 Hz, CL = 10 F, CN = 0.1 F, VIN = VOUT + 1.5 V, IOUT = 30 mA, VRIPPLE = 100 mVrms, (Note 3) 55 dB VNO Output Noise Voltage 10 Hz f 80 kHz, CL = 10 F, CN = 0.1 F, VCN = VOUT + 1.5 V, IOUT = 60 mA, (Notes 3,4) 30 Vrms Vref Noise Bypass Terminal Voltage 1.25 V VOUT /T Temperature Coefficient 40 ppm/ C IOUT = 10 mA CONTROL TERMINAL SPECIFICATIONS ICONT Control Current VCONT = 1.8 V, Output ON VCONT(ON) Control Voltage ON Output ON VCONT(OFF) Control Voltage OFF Output OFF 12 35 1.8 A V 0.6 V Note 1: When mounted as recommended. Derate at 4.8 mw/C for SOT-23L and 6.4 mw/C for SOT-89 packages for operation above 25 C. Note 2: Refer to "Definition of Terms." Note 3: Ripple rejection and noise voltage are affected by the value and characteristics of the capacitor used. Note 4: Output noise voltage can be reduced by connecting a capacitor to a noise pass terminal. Gen Note: Parameters with min. or max. values are 100% tested at TA = 25 C. October 1999 TOKO, Inc. This Material Copyrighted By Its Respective Manufacturer Page 3 TK112xxB ABSOLUTE MAXIMUM RATINGS TK112xxBI (VOUT 2.5 V) Supply Voltage ......................................................... 16 V Power Dissipation SOT-23L (Note1) .................. 600 mW Power Dissipation SOT-89 (Note1) .................... 900 mW Reverse Bias ............................................................ 10 V Storage Temperature Range ................... -55 to +150 C Operating Temperature Range ...................-40 to +85 C Operating Voltage Range ............................ 1.8 to 14.5 V Junction Temperature ........................................... 150 C TK112xxBI ELECTRICAL CHARACTERISTICS (VOUT 2.5 V) Test conditions: TA = -40 to 85 C, unless otherwise specified. SYMBOL PARAMETER TEST CONDITIONS IQ Quiescent Current IOUT = 0 mA, Excluding ICONT ISTBY Standby Current VIN = 8 V, Output OFF VOUT Output Voltage IOUT = 30 mA Line Reg Line Regulation Load Reg Load Regulation MIN TYP MAX UNITS 170 300 A 0.2 A See Table 3 V VOUT 5.5 V,(Note 2) 3.0 25 mV VOUT 15 40 mV IOUT = 1 to 60 mA, (Note 2) 6 40 mV IOUT = 1 to 100 mA, (Note 2) 18 80 mV IOUT = 1 to 150 mA, (Note 2) 23 110 mV IOUT = 60 mA, (Note 2) 0.12 0.23 V IOUT = 150 mA, (Note 2) 0.26 0.40 V 5.6 V,(Note 2) VDROP Dropout Voltage IOUT Continuous Output Current (Note 2) 150 mA IOUT(PULSE) Pulse Output Current 5 ms pulse, 12.5 % duty cycle 180 mA RR Ripple Rejection f = 400 Hz, CL = 10 F, CN = 0.1 F, VIN = VOUT + 1.5 V, IOUT = 30 mA, VRIPPLE = 100 mVrms, (Note 3) 60 dB VNO Output Noise Voltage 10 Hz f 80 kHz, CL = 10 F, CN = 0.1 F, VCN = VOUT + 1.5 V, IOUT = 60 mA, (Notes 3,4) 30 Vrms Vref Noise Bypass Terminal Voltage 1.25 V VOUT /T Temperature Coefficient 40 ppm/ C IOUT = 10 mA CONTROL TERMINAL SPECIFICATIONS ICONT Control Current VCONT = 1.8 V, Output ON VCONT(ON) Control Voltage ON Output ON VCONT(OFF) Control Voltage OFF Output OFF 12 40 2.0 A V 0.5 V Note 1: When mounted as recommended. Derate at 4.8 mw/C for SOT-23L and 6.4 mw/C for SOT-89 packages for operation above 25 C. Note 2: Refer to "Definition of Terms." Note 3: Ripple rejection and noise voltage are affected by the value and characteristics of the capacitor used. Note 4: Output noise voltage can be reduced by connecting a capacitor to a noise pass terminal. Gen Note: Parameters with min. or max. values are 100% tested at TA = 25 C. Gen Note: For Line Regulation, typ. and max. is changed to VOUT > 5.6 V. Page 4 This Material Copyrighted By Its Respective Manufacturer October 1999 TOKO, Inc. TK112xxB TK112xxBMC ELECTRICAL CHARACTERISTICS TABLE 1 Test conditions: TA = 25 C, IOUT = 30 mA, unless otherwise specified. Output Voltage 1.3 V 1.4 V 1.5 V 1.6 V 1.7 V 1.8 V 1.9 V Voltage Code 13 14 15 16 17 18 19 VOUT(MIN) VOUT(MAX) 1.240 V 1.340 V 1.440 V 1.540 V 1.640 V 1.740 V 1.804 V 1.36 V 1.46 V 1.560 V 1.660 V 1.760 V 1.860 V 1.960 V Test Voltage 2.4 V 2.4 V 2.4 V 2.4 V 2.4 V 2.4 V 2.4 V TK112xxBC ELECTRICAL CHARACTERISTICS TABLE 2 Test conditions: TA = 25 C, IOUT = 30 mA, unless otherwise specified. Output Voltage 2.0 V 2.1 V 2.2 V 2.3 V 2.4 V 2.5 V 2.6 V 2.7 V 2.8 V 2.9 V 3.0 V 3.1 V 3.2 V 3.3 V 3.4 V 3.5 V 3.6 V Voltage Code 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 VOUT(MIN) VOUT(MAX) 1.940 V 2.040 V 2.140 V 2.240 V 2.340 V 2.440 V 2.540 V 2.640 V 2.740 V 2.840 V 2.940 V 3.040 V 3.140 V 3.240 V 3.335 V 3.435 V 3.535 V 2.060 V 2.160 V 2.260 V 2.360 V 2.460 V 2.560 V 2.660 V 2.760 V 2.860 V 2.960 V 3.060 V 3.160 V 3.260 V 3.360 V 3.465 V 3.565 V 3.665 V October 1999 TOKO, Inc. This Material Copyrighted By Its Respective Manufacturer Test Voltage 3.0 V 3.1 V 3.2 V 3.3 V 3.4 V 3.5 V 3.6 V 3.7 V 3.8 V 3.9 V 4.0 V 4.1 V 4.2 V 4.3 V 4.4 V 4.5 V 4.6 V Output Voltage 3.7 V 3.8 V 3.9 V 4.0 V 4.1 V 4.2 V 4.3 V 4.4 V 4.5 V 4.6 V 4.7 V 4.8 V 4.9 V 5.0 V 5.5 V 8.0 V Voltage Code 37 38 39 40 41 42 43 44 45 46 47 48 49 50 55 80 VOUT(MIN) VOUT(MAX) 3.630 V 3.725 V 3.825 V 3.920 V 4.020 V 4.120 V 4.215 V 4.315 V 4.410 V 4.510 V 4.605 V 4.705 V 4.800 V 4.900 V 5.390 V 7.840 V 3.770 V 3.875 V 3.975 V 4.080 V 4.180 V 4.280 V 4.385 V 4.485 V 4.590 V 4.690 V 4.795 V 4.895 V 5.000 V 5.100 V 5.610 V 8.160 V Test Voltage 4.7 V 4.8 V 4.9 V 5.0 V 5.1 V 5.2 V 5.3 V 5.4 V 5.5 V 5.6 V 5.7 V 5.8 V 5.9 V 6.0 V 6.5 V 9.0 V Page 5 TK112xxB TK112xxBI ELECTRICAL CHARACTERISTICS TABLE 3 Test Conditions: VIN = VOUT(TYP) + 1 V, IOUT = 30 mA, unless otherwise specified. Output Voltage Voltage Code 2.5 V 2.6 V 2.7 V 2.8 V 2.9 V 3.0 V 3.1 V 3.2 V 3.3 V 3.4 V 3.5 V 3.6 V 3.7 V 3.8 V 3.9 V 4.0 V 4.1 V 4.2 V 4.3 V 4.4 V 4.5 V 4.6 V 4.7 V 4.8 V 4.9 V 5.0 V 5.5 V 8.0 V 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 55 80 Page 6 This Material Copyrighted By Its Respective Manufacturer Room Temp. Range (TA = 25 C) VOUT(MAX) VOUT(MIN) 2.440 V 2.540 V 2.640 V 2.750 V 2.840 V 2.940 V 3.040 V 3.140 V 3.240 V 3.335 V 3.435 V 3.535 V 3.630 V 3.725 V 3.825 V 3.920 V 4.020 V 4.120 V 4.215 V 4.315 V 4.410 V 4.510 V 4.605 V 4.705 V 4.800 V 4.900 V 5.390 V 7.840 V 2.560 V 2.660 V 2.760 V 2.860 V 2.960 V 3.060 V 3.160 V 3.260 V 3.360 V 3.465 V 3.565 V 3.665 V 3.770 V 3.875 V 3.975 V 4.080 V 4.180 V 4.280 V 4.385 V 4.485 V 4.590 V 4.690 V 4.795 V 4.895 V 5.000 V 5.100 V 5.610 V 8.160 V Full Temp. Range (TA = -40 to +85 C) VOUT(MIN) VOUT(MAX) 2.400 V 2.500 V 2.600 V 2.700 V 2.800 V 2.900 V 3.000 V 3.095 V 3.190 V 3.290 V 3.385 V 3.485 V 3.580 V 3.675 V 3.770 V 3.870 V 3.965 V 4.060 V 4.160 V 4.255 V 4.350 V 4.450 V 4.545 V 4.640 V 4.740 V 4.835 V 5.320 V 7.745 V 2.600 V 2.700 V 2.800 V 2.900 V 3.000 V 3.100 V 3.200 V 3.305 V 3.410 V 3.510 V 3.615 V 3.720 V 3.820 V 3.925 V 4.030 V 4.130 V 4.235 V 4.335 V 4.440 V 4.545 V 4.645 V 4.750 V 4.850 V 4.955 V 5.060 V 5.165 V 5.680 V 8.265 V October 1999 TOKO, Inc. TK112xxB TEST CIRCUITS SOT-23L SOT-89 IIN IIN VIN VIN + + VOUT IOUT + VIN + 112XXB VIN CONT CN 0.1 F VIN + 1.0 F NOISE BYPASS TRANSIENT RESPONSE CN 0.1 F ICONT VOUT 2.2 F NOISE BYPASS CONT + VOUT VOUT 2.2 F 1 F VCONT IOUT + ICONT V OUT VCONT 1 RS CN 0.1 F CONT 1 F CL = 10 F to 0.22 F Note: Connect pin 5 to ground for heat sink TYPICAL PERFORMANCE CHARACTERISTICS TA = 25 C, unless otherwise specified. OUTPUT VOLTAGE RESPONSE (OFFON) SHORT CIRCUIT CURRENT LOAD REGULATION CL = 2.2 F 4 VOUT (V) VOUT (5 mV/DIV) CN = 0.01 F VCONT 5 VOUT(TYP) VOUT CN = 0.1 F 2 1 ILOAD = 30 mA 0 200 400 600 800 0 50 0 150 300 TIME (s) IOUT (mA) OUTPUT VOLTAGE VS. INPUT VOLTAGE LINE REGULATION DROPOUT VOLTAGE VS. OUTPUT CURRENT VOUT(TYP) IOUT = 50 mA -100 VDROP (mV) IOUT = 30 mA 0 VOUT (50 mV/DIV) IOUT = 0 mA IOUT = 90 mA 0 0 100 IOUT (mA) VOUT(TYP) VOUT (25 mV/DIV) 3 VIN = VOUT VIN (V) (50 mV/DIV) October 1999 TOKO, Inc. This Material Copyrighted By Its Respective Manufacturer -200 -300 -400 0 10 VIN (V) 20 0 100 200 IOUT (mA) Page 7 TK112xxB TYPICAL PERFORMANCE CHARACTERISTICS (CONT.) TA = 25 C, unless otherwise specified. REVERSE BIAS CURRENT (VIN = 0 V) 500 8 400 6 QUIESCENT CURRENT (OFF MODE) VS. INPUT VOLTAGE 100 1.9 V 300 IQ (pA) 10 IREV (A) IGND (mA) GROUND CURRENT VS. OUTPUT CURRENT UPPER 2.0 V 4 200 2 100 0 0 0 100 10 0 200 50 VOUT = 1.3 V 0 20 0 20 10 IOUT (mA) VREV (V) VIN (V) QUIESCENT CURRENT (ON MODE) VS. INPUT VOLTAGE QUIESCENT CURRENT (ON MODE) vs. INPUT VOLTAGE GROUND CURRENT IOUT = 0 mA 2 IOUT = 0 mA 1.0 2 3V 1 2V 5V VOUT = 1.9 V 0.5 0 1 10 5 0 0 -50 0 40 IOUT = 150 mA IOUT = 60 mA 100 VCONT (VOUT, ON POINT) RCONT = 0 2.0 VCONT = 5 V VCONT (V) 400 ICONT (A) 50 50 TA (C) CONTROL CURRENT 500 200 5 2.5 VIN (V) DROPOUT VOLTAGE 300 IOUT = 30 mA VOUT = 1.3 to 1.8 V 0 VIN (V) VDROP (mV) IOUT = 60 mA 4V VOUT = 1.3 to 1.8 V 0 IGND (mA) VOUT = IQ (mA) IQ (mA) VOUT 30 20 1.0 VCONT = 1.8 V 10 100 IOUT = 30 mA 0 -50 0 50 100 TA (C) Page 8 This Material Copyrighted By Its Respective Manufacturer 0 -50 0 50 TA (C) 100 0 -50 0 50 100 TA (C) October 1999 TOKO, Inc. TK112xxB TYPICAL PERFORMANCE CHARACTERISTICS (CONT.) TA = 25 C, unless otherwise specified. MAXIMUM OUTPUT CURRENT LINE VOLTAGE STEP RESPONSE OUTPUT VOLTAGE VARIATION VOUT +2 V UPPER VOUT = 2.7 V 260 UNDER VOUT = 2 V -10 3 V VOUT = 1.9 V 250 4V 0 5V -20 240 VOUT = 1.3 V -50 0 50 100 0 50 100 TIME (50 s/DIV) TA (C) NOISE LEVEL NOISE SPECTRUM LOAD CURRENT STEP RESPONSE 0 NOISE (V) dB CN VOUT = 3 V IOUT = 60 mA 200 50 mA CN = 0.01 F, CL = 2.2 F VS. 250 100 mA -50 CL = 3.3 F, CN = NONE CL = 2.2 F 150 CL = 3.3F 100 CL = 10 F CL = 3.3 F, CN = 0.1 F VOUT VOUT IOUT VIN CN = 0.01 F, CL = 2.2 F -30 -50 TA (C) VOUT (50 mV/DIV) CN = 0.001 F, CL = .22 F VOUT 270 VOUT +1 V VOUT 10 VOUT (mV) IOUT (mA) VOUT = 2 to 2.6 V VOUT (10 mV/DIV) 280 SPECTRUM ANALYZER BACKGROUND NOISE -100 CN = 0.1 F, CL = 10 F 50 0 0 500 k f (Hz) TIME (50 s/DIV) 1M 1 PF 10 100 1000 .01 F .1 CN RIPPLE REJECTION 0 I OUT = 30 mA RR (dB) -20 -40 CN = 0.01 F CN = 0.1 F -60 -80 -100 0.01 0.1 1 10 100 f (kHz) October 1999 TOKO, Inc. This Material Copyrighted By Its Respective Manufacturer Page 9 TK112xxB TYPICAL PERFORMANCE CHARACTERISTICS (CONT.) TA = 25 C, unless otherwise specified. TK11213B OUTPUT VOLTAGE vs. OUTPUT CURRENT OUTPUT VOLTAGE vs. INPUT VOLTAGE 1.3 IOUT = 0 mA 1.3 VOUT (V) VOUT (V) 30 mA 60 mA 1.2 1.9 V 2.1 V VIN = 1.8 V 1.2 150 mA 2.4 V 90 mA 1.1 2.0 V 120 mA 1.1 1.6 1.8 1.7 1.9 2.0 2.1 0 100 VIN (V) TK11214B IOUT = 0 mA 1.4 30 mA 60 mA VOUT (V) VOUT (V) 300 OUTPUT VOLTAGE vs. OUTPUT CURRENT OUTPUT VOLTAGE vs. INPUT VOLTAGE 1.4 200 IOUT (mA) 1.3 1.9 V 2.1 V VIN = 1.8 V 1.3 2.4 V 150 mA 90 mA 2.0 V 120 mA 1.2 1.2 1.6 1.7 1.8 1.9 2.0 2.1 0 100 300 200 IOUT (mA) VIN (V) TK11215B OUTPUT VOLTAGE vs. INPUT VOLTAGE 1.5 OUTPUT VOLTAGE vs. OUTPUT CURRENT IOUT = 0 mA 1.5 VOUT (V) VOUT (V) 30 mA 60 mA 1.4 1.9 V 1.4 VIN = 1.8 V 2.1 V 2.0 V 2.4 V 120 mA 1.3 150 mA 90 mA 1.6 1.7 1.8 1.9 2.0 2.1 VIN (V) Page 10 This Material Copyrighted By Its Respective Manufacturer 1.3 0 100 200 300 IOUT (mA) October 1999 TOKO, Inc. TK112xxB TYPICAL PERFORMANCE CHARACTERISTICS (CONT.) TA = 25 C, unless otherwise specified. TK11216B OUTPUT VOLTAGE vs. INPUT VOLTAGE 1.6 OUTPUT VOLTAGE vs. OUTPUT CURRENT IOUT = 0 mA 1.6 VOUT (V) VOUT (V) 30 mA 60 mA 1.5 1.9 V 2.1 V VIN = 1.8 V 1.5 2.0 V 150 mA 2.4 V 120 mA 1.4 90 mA 1.7 1.6 1.8 1.9 2.0 1.4 2.1 0 100 300 200 VIN (V) IOUT (mA) OUTPUT VOLTAGE vs. INPUT VOLTAGE OUTPUT VOLTAGE vs. OUTPUT CURRENT TK11217B IOUT = 0 mA 1.7 VOUT (V) VOUT (V) 1.7 30 mA 1.6 60 mA 1.9 V 1.6 2.1 V VIN = 1.8 V 2.0 V 150 mA 2.4 V 120 mA 90 mA 1.5 1.5 1.6 1.7 1.8 1.9 2.0 2.1 0 100 200 300 VIN (V) IOUT (mA) OUTPUT VOLTAGE vs. INPUT VOLTAGE OUTPUT VOLTAGE vs. OUTPUT CURRENT TK11218B 1.8 IOUT = 0 mA VOUT (V) VOUT (V) 1.8 90 mA 30 mA 1.7 2.0 V 2.1 V 1.9 V 2.4 V 1.7 150 mA VIN = 1.8 V 60 mA 1.6 1.7 120 mA 1.8 1.9 2.0 2.1 2.2 VIN (V) October 1999 TOKO, Inc. This Material Copyrighted By Its Respective Manufacturer 1.6 0 100 200 300 IOUT (mA) Page 11 TK112xxB TYPICAL PERFORMANCE CHARACTERISTICS (CONT.) TA = 25 C, unless otherwise specified. TK11219B OUTPUT VOLTAGE VS. INPUT VOLTAGE OUTPUT VOLTAGE vs. OUTPUT CURRENT 1.9 1.9 VOUT (V) VOUT (V) IOUT = 0 mA 1.8 30 mA 1.7 1.7 2.4 V 1.8 150 mA 90 mA 120 mA 1.9 2.0 VIN = 1.9 V 60 mA 1.8 2.2 V 2.1 V 2.0 V 2.1 2.2 VIN (V) Page 12 This Material Copyrighted By Its Respective Manufacturer 1.7 0 100 200 300 IOUT (mA) October 1999 TOKO, Inc. TK112xxB DEFINITION AND EXPLANATION OF TECHNICAL TERMS OUTPUT VOLTAGE (VOUT) QUIESCENT CURRENT (IQ) The output voltage is specified with VIN = (VOUT(TYP) + 1 V) and IOUT = 30 mA. The quiescent current is the current which flows through the ground terminal under no load conditions (IOUT = 0 mA). DROPOUT VOLTAGE (VDROP) GROUND CURRENT (IGND) The dropout voltage is the difference between the input voltage and the output voltage at which point the regulator starts to fall out of regulation. Below this value, the output voltage will fall as the input voltage is reduced. It is dependent upon the load current and the junction temperature. Ground current is the current which flows through the ground pin(s). It is defined as IIN - IOUT, excluding ICONT. OUTPUT CURRENT (IOUT(MAX)) This is the maximum continuous output current specified under the condition where the output voltage drops 0.3 V below the value specified with IOUT = 30 mA. The input voltage is set to VOUT +1 V, and the current is pulsed to minimize temperature effect. RIPPLE REJECTION RATIO (RR) Ripple rejection is the ability of the regulator to attenuate the ripple content of the input voltage at the output. It is specified with 100 mVrms, 400 Hz superimposed on the input voltage, where VIN = VOUT + 1.5 V. The output decoupling capacitor is set to 10 F, the noise bypass capacitor is set to 0.1 F, and the load current is set to 30 mA. Ripple rejection is the ratio of the ripple content of the output vs. the input and is expressed in dB. STANDBY CURRENT (ISTBY) CONTINUOUS OUTPUT CURRENT (IOUT) Normal operating output current. This is limited by package power dissipation. PULSE OUTPUT CURRENT (IOUT(PULSE)) Maximum pulse width 5 ms at VOUT upper 2.0 V; 7 ms. at VOUT under 1.9 V; duty cycle 12.5%: pulse load only. LINE REGULATION (Line Reg) Line regulation is the ability of the regulator to maintain a constant output voltage as the input voltage changes. The line regulation is specified as the input voltage is changed from VIN = VOUT(TYP) + 1 V to VIN = VOUT(TYP) + 6 V. LOAD REGULATION (Load Reg) Load regulation is the ability of the regulator to maintain a constant output voltage as the load current changes. It is a pulsed measurement to minimize temperature effects with the input voltage set to VIN = VOUT +1 V. The load regulation is specified under two output current step conditions of 1 mA to 60 mA and 1 mA to 100 mA. October 1999 TOKO, Inc. This Material Copyrighted By Its Respective Manufacturer Standby current is the current which flows into the regulator when the output is turned off by the control function (VCONT = 0 V). It is measured with VIN = 8 V (9 V for the 8 V output device). SENSOR CIRCUITS Overcurrent Sensor The overcurrent sensor protects the device in the event that the output is shorted to ground. Thermal Sensor The thermal sensor protects the device in the event that the junction temperature exceeds the safe value (TJ = 150 C). This temperature rise can be caused by external heat, excessive power dissipation caused by large input to output voltage drops, or excessive output current. The regulator will shut off when the temperature exceeds the safe value. As the junction temperatures decrease, the regulator will begin to operate again. Under sustained fault conditions, the regulator output will oscillate as the device turns off then resets. Damage may occur to the device under extreme fault conditions. Page 13 TK112xxB DEFINITION AND EXPLANATION OF TECHNICAL TERMS (CONT.) Reverse Voltage Protection Reverse voltage protection prevents damage due to the output voltage being higher than the input voltage. This fault condition can occur when the output capacitor remains charged and the input is reduced to zero, or when an external voltage higher than the input voltage is applied to the output side. If the control function is not used, connect the control terminal to VIN. When the control function is used, the control current can be reduced by inserting a series resistor (RCONT) between the control terminal and VIN. The value of this resistor should be determined from the graph below. CONTROL FUNCTION CONTROL PIN CURRENT VS. VOLTAGE 50 VIN ICONT (A) 40 VOUT SW RC CN 30 20 RCONT = 0 10 RCONT =100K 0 0 1 2 3 4 5 VCONT (V) SOT-23L VIN SW RC CN SOT-89 Page 14 This Material Copyrighted By Its Respective Manufacturer October 1999 TOKO, Inc. TK112xxB DEFINITION AND EXPLANATION OF TECHNICAL TERMS (CONT.) ON/OFF RESPONSE WITH CONTROL AND LOAD TRANSIENT RESPONSE The turn-on time depends upon the value of the output capacitor and the noise bypass capacitor. The turn-on time will increase with the value of either capacitor. The graphs below show the relationship between turn-on time and load capacitance. If the value of these capacitors is reduced, the load and line regulation will suffer and the noise voltage will increase. If the value of these capacitors is increased, the turn-on time will increase. OUTPUT VOLTAGE RESPONSE (OFFON) OUTPUT VOLTAGE RESPONSE (OFFON) CL = 2.2 F CL = 1.0 F CL = 0.47 F 5 15 25 35 CN = 0.1 F VOUT VOUT CL = 1.5 F 45 TIME (s) 30 to 60 mA 0 to 30 mA CL = 0.33 F ILOAD CN = 0.01 F VCONT CL = 0.33 F ILOAD = 5 to 35 mA VOUT (200 mV/DIV) VCONT ILOAD = 10 mA, CN = 1000 pF -5 LOAD CURRENT STEP RESPONSE ILOAD = 30 mA 0 200 400 TIME (s) 600 800 -5 5 15 25 35 45 TIME( s) REDUCTION OF OUTPUT NOISE Although the architecture of the Toko regulators is designed to minimize semiconductor noise, further reduction can be achieved by the selection of external components. The obvious solution is to increase the size of the output capacitor. A more effective solution would be to add a capacitor to the noise bypass terminal. The value of this capacitor should be 0.1 f or higher (higher values provide greater noise reduction). Although stable operation is possible without the noise bypass capacitor, this terminal has a high impedance and care should be taken to avoid a large circuit area on the printed circuit board when the capacitor is not used. Please note that several parameters are affected by the value of the capacitors and bench testing is recommended when deviating from standard values. October 1999 TOKO, Inc. This Material Copyrighted By Its Respective Manufacturer Page 15 TK112xxB DEFINITION AND EXPLANATION OF TECHNICAL TERMS (CONT.) PACKAGE POWER DISSIPATION (PD) This is the power dissipation level at which the thermal sensor is activated. The IC contains an internal thermal sensor which monitors the junction temperature. When the junction temperature exceeds the monitor threshold of 150 C, the IC is shut down. The junction temperature rises as the difference between the input power (VIN x IIN) and the output power (VOUT x IOUT) increases. The rate of temperature rise is greatly affected by the mounting pad configuration on the PCB, the board material, and the ambient temperature. When the IC mounting has good thermal conductivity, the junction temperature will be low even if the power dissipation is great. When mounted on the recommended mounting pad, the power dissipation of the SOT-23L is increased to 600 mW. For operation at ambient temperatures over 25 C, the power dissipation of the SOT-23L device should be derated at 4.8 mW/C. The power dissipation of the SOT-89 package is 900 mW when mounted as recommended. Derate the power dissipation at 7.2 mW/C for operation above 25 C. To determine the power dissipation for shutdown when mounted, attach the device on the actual PCB and deliberately increase the output current (or raise the input voltage) until the thermal protection circuit is activated. Calculate the power dissipation of the device by subtracting the output power from the input power. These measurements should allow for the ambient temperature of the PCB. The value obtained from PD /(150 C - TA) is the derating factor. The PCB mounting pad should provide maximum thermal conductivity in order to maintain low device temperatures. As a general rule, the lower the temperature, the better the reliability of the device. The thermal resistance when mounted is expressed as follows: the output side is shorted. Input current gradually falls as temperature rises. You should use the value when thermal equilibrium is reached. The range of usable currents can also be found from the graph below. (mW) 3 PD 6 DPD 4 5 25 50 75 TA (C) 150 Procedure: 1) 2) 3) 4) Find PD PD1 is taken to be PD x (~0.8 - 0.9) Plot PD1 against 25 C Connect PD1 to the point corresponding to the 150 C with a straight line. 5) In design, take a vertical line from the maximum operating temperature (e.g., 75 C) to the derating curve. 6) Read off the value of PD against the point at which the vertical line intersects the derating curve. This is taken as the maximum power dissipation, DPD. The maximum operating current is: Tj = 0jA x PD + TA IOUT = (DPD / (VIN(MAX) - VOUT) For Toko ICs, the internal limit for junction temperature is 150 C. If the ambient temperature (TA) is 25 C, then: 150 C = 0jA x PD + 25 C 0jA = 125 C/ PD PD is the value when the thermal sensor is activated. A simple way to determine PD is to calculate VIN x IIN when Page 16 This Material Copyrighted By Its Respective Manufacturer October 1999 TOKO, Inc. TK112xxB DEFINITION AND EXPLANATION OF TECHNICAL TERMS (CONT.) 1000 750 MOUNTED AS SHOWN 800 FREE AIR PD (mW) PD (mW) 600 MOUNTED AS SHOWN 450 FREE AIR 300 600 400 200 150 0 0 0 50 100 0 150 SOT-23L POWER DISSIPATION CURVE 50 100 150 TA (C) TA (C) SOT-89 POWER DISSIPATION CURVE SOT-89 BOARD LAYOUT SOT-23L BOARD LAYOUT APPLICATION NOTE Copper pattern should be as large as possible. Power dissipation is 600 mW for SOT-23L and 900 mV for SOT-89. A low Equivalent Series Resistance (ESR) capacitor is recommended. For low temperature operation, select a capacitor with a low ESR at the lowest operating temperature to prevent oscillation, degradation of ripple rejection and increase in noise. The minimum recommended capacitance is 2.2 F. October 1999 TOKO, Inc. This Material Copyrighted By Its Respective Manufacturer Page 17 TK112xxB APPLICATION INFORMATION INPUT-OUTPUT CAPACITORS Linear regulators require an output capacitor in order to maintain regulator loop stability. This capacitor should be selected to ensure stable operation over the desired temperature and load range. The graphs below show the effects of capacitance value and ESR on the stable operation area. VOUT = 112xxB 2.0 V CL 3.0 V 5.0 V ESR CL = 1 F ESR () 10 STABLE OPERATION AREA 1 0.1 0 .01 1000 1000 100 100 100 10 STABLE OPERATION AREA 50 100 150 10 STABLE OPERATION AREA 10 STABLE OPERATION AREA 1 1 1 0.1 0.1 0.1 0.01 0.01 0.01 1 ESR () 100 CL = 10 F 1000 ESR () 1000 ESR () CL = 3.3 F CL = 2.2 F 1 IOUT (mA) 50 100 150 1 50 100 150 IOUT (mA) IOUT (mA) 1 50 100 150 IOUT (mA) In general, the capacitor should be at least 1 F (aluminum electrolytic) and be rated for the actual ambient operating temperature range. The table below shows typical characteristics for several types and values of capacitance. Please note that the ESR varies widely depending upon manufacturer, type, size, and material. ESR Capacitance Aluminum Capacitor Tantalum Capacitor Ceramic Capacitor 1.0 F 2.4 2.3 0.140 2.2 F 2.0 1.9 0.059 3.3 F 4.6 1.0 0.049 10 F 1.4 0.5 0.025 Note: ESR is measured at 10 kHz. Page 18 This Material Copyrighted By Its Respective Manufacturer October 1999 TOKO, Inc. TK112xxB COMPARISON BETWEEN TK112xx and TK112xxB Specification Parameter TK112xx TK112xxB 3.0% 2.0% Quiescent current 180 A 170 A Output current 130 mA 150 mA Dropout voltage (IOUT = 50 mA) 160 mV 110 mV Output voltage tolerance Ripple rejection at low line regulation point (See Figure below) Built-in reverse bias protection Superior NO ESD protection YES Superior VOUT TK112xxB TK112xx Input ripple noise October 1999 TOKO, Inc. This Material Copyrighted By Its Respective Manufacturer Page 19 TK112xxB COMPARISON BETWEEN TK112xx and TK112xxB TK112xx TK112xxB 10 8 8 IQ (mA) 10 6 4 2 2 0 100 0 200 0 IOUT (mA) SHORT CIRCUIT CURRENT SHORT CIRCUIT CURRENT 5 5 4 4 3 2 0 100 IOUT (mA) 1 200 3 2 1 0 150 0 300 0 150 IOUT (mA) IOUT (mA) DROPOUT VOLTAGE vs. OUTPUT CURRENT DROPOUT VOLTAGE vs. OUTPUT CURRENT 0 0 -100 -100 VDROP (mV) VDROP (mV) 6 4 0 VOUT (V) QUIESCENT CURRENT vs. OUTPUT CURRENT VOUT (V) IQ (mA) QUIESCENT CURRENT vs. OUTPUT CURRENT -200 -300 -400 300 -200 -300 -400 0 100 IOUT (mA) Page 20 This Material Copyrighted By Its Respective Manufacturer 200 0 100 200 IOUT (mA) October 1999 TOKO, Inc. TK112xxB COMPARISON BETWEEN TK112xx and TK112xxB TK112xx TK112xxB OUTPUT VOLTAGE VS. INPUT VOLTAGE OUTPUT VOLTAGE vs. INPUT VOLTAGE VOUT(TYP) IOUT = 0 mA VOUT (25 mV/DIV) VOUT (25 mV/Div) VOUT(TYP) IOUT = 30 mA IOUT = 60 mA 5 IOUT = 60 mA IOUT = 0 mA IOUT = 30 mA IOUT = 50 mA IOUT = 90 mA 0 VIN = VOUT VIN (V) (50 mV/Div) 0 REVERSE BIAS CURRENT REVERSE BIAS CURRENT VIN = 0 V 500 400 IREV (A) IREV (A) VIN = 0 V 500 400 300 200 300 200 100 100 0 VIN = VOUT VIN (V) (50 mV/DIV) 0 10 0 20 0 10 20 VREV (V) VREV (V) LOAD REGULATION LOAD REGULATION VOUT (5 mV/DIV) 0 50 IOUT (mA) October 1999 TOKO, Inc. This Material Copyrighted By Its Respective Manufacturer 100 VOUT (5 mV/DIV) VOUT(TYP) VOUT(TYP) 0 50 100 IOUT (mA) Page 21 TK112xxB COMPARISON BETWEEN TK112xx and TK112xxB TK112xx TK112xxB LINE REGULATION LINE REGULATION VOUT(TYP) VOUT (50 mV/DIV) VOUT (50 mV/DIV) VOUT(TYP) 0 10 20 0 VIN (V) QUIESCENT CURRENT (OFF MODE) VS. INPUT VOLTAGE QUIESCENT CURRENT (OFF MODE) VS. INPUT VOLTAGE 100 IQ (pA) IQ (pA) 20 VIN (V) 100 50 0 10 0 10 VIN (V) Page 22 This Material Copyrighted By Its Respective Manufacturer 20 50 0 0 10 20 VIN (V) October 1999 TOKO, Inc. TK112xxB NOTES October 1999 TOKO, Inc. This Material Copyrighted By Its Respective Manufacturer Page 23 TK112xxB PACKAGE OUTLINE +0.15 - 0.05 0.4 SOT-23L (SOT-23L-6) 6 5 0.1 M Marking Information 0.6 4 Product Code Voltage Code e1 3.0 Product Code Voltage Code 1 2 3 0.32 e +0.15 - 0.05 0.1 5 PL e 0.95 e 0.95 M 0.95 3.5 e 0.95 Recommended Mount Pad +0.3 - 0.1 (3.4) 15 max 1.2 0.4 0.15 0 - 0.1 +0.15 - 0.05 1.4 max 0.3 2.2 Note: Pin 2 and Pin 5 should be grounded for heat dissipation Dimensions are shown in millimeters Tolerance: x.x = 0.2 mm (unless otherwise specified) + 0.3 3.3 4.5 SOT-89 (SOT 89-5) 0.44 max 1.6 0.49 max 6 0.49 max 4 0.4 5 1.0 0.49 max Lot Number 0.44 max 1.0 Product Code 4.5 2.5 +0.5 -0.3 Voltage Code 1 3 2 0.49 max 0.54 max e 1.5 e P 1.0 Marking 0.7 max 0.49 max 0.7 max 1.0 1.5 0.8 0.7 1.5 e' 3.0 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 55 80 1.5 1.5 0.7 45 TK11213B TK11214B TK11215B TK11216B TK11217B TK11218B TK11219B TK11220B TK11221B TK11222B TK11223B TK11224B TK11225B TK11226B TK11227B TK11228B TK11229B TK11230B TK11231B TK11232B TK11233B TK11234B TK11235B TK11236B TK11237B TK11238B TK11239B TK11240B TK11241B TK11242B TK11243B TK11244B TK11245B TK11246B TK11247B TK11248B TK11249B TK11250B TK11255B TK11280B 2.0 e 1.5 e 1.5 Recommended Mount Pad Dimensions are shown in millimeters Tolerance: x.x = 0.2 mm (unless otherwise specified) Toko America, Inc. Headquarters 1250 Feehanville Drive, Mount Prospect, Illinois 60056 Tel: (847) 297-0070 Fax: (847) 699-7864 TOKO AMERICA REGIONAL OFFICES Midwest Regional Office Toko America, Inc. 1250 Feehanville Drive Mount Prospect, IL 60056 Tel: (847) 297-0070 Fax: (847) 699-7864 Western Regional Office Toko America, Inc. 2480 North First Street , Suite 260 San Jose, CA 95131 Tel: (408) 432-8281 Fax: (408) 943-9790 Eastern Regional Office Toko America, Inc. 107 Mill Plain Road Danbury, CT 06811 Tel: (203) 748-6871 Fax: (203) 797-1223 Semiconductor Technical Support Toko Design Center 4755 Forge Road Colorado Springs, CO 80907 Tel: (719) 528-2200 Fax: (719) 528-2375 Visit our Internet site at http://www.tokoam.com The information furnished by TOKO, Inc. is believed to be accurate and reliable. However, TOKO reserves the right to make changes or improvements in the design, specification or manufacture of its products without further notice. TOKO does not assume any liability arising from the application or use of any product or circuit described herein, nor for any infringements of patents or other rights of third parties which may result from the use of its products. No license is granted by implication or otherwise under any patent or patent rights of TOKO, Inc. Page 24 (c) 1999 Toko, Inc. All Rights Reserved This Material Copyrighted By Its Respective Manufacturer October 1999 TOKO, Inc. IC-215-TK112B 0798O0.0K Printed in the USA