TK112xxCM/U APPLICATION MANUAL LDO REGULATOR WITH ON/OFF SWITCH TK112xxCM/U GC3-H026H Page 1 TK112xxCM/U Features * Very low Dropout Voltage. (Vdrop=105mV at 100mA) * Very good stability (CL=0.1mF is stable for any type capacitor with 2.5V Vout) * High Precision output Voltage (1.5% or 50mV) * Good ripple rejection ratio (80dB at 1kHz) * Wide operating voltage range (1.8V ~ 14.5V) * Peak output current is 480mA.(10% down point) * Built-in Short circuit protection * Built-in Thermal Shutdown * Suitable for Very Low Noise Applications * Built-in on/off Control (0.1mA Max Standby current) High On * Very Small Surface Mount Packages SOT23L / SOT89 package * Built-in reverse bias over current protection Description The TK112xxC is an integrated circuit with a silicon monolithic bipolar structure. The regulator is of the low saturation voltage output type with very little quiescent current (65mA). The PNP power transistor is built-in. The I/O voltage difference is 0.17V (typical) when a current of 200mA is supplied to the system. Because of the low voltage drop, the voltage source can be effectively used; this makes it very suitable for battery powered equipment. The on/off function is built into the IC. The current during standby mode becomes very small (pA level). The output voltage is available from 1.5 to 10.0V in 0.1V steps. The output voltage is trimmed with high accuracy. This allows the optimum voltage to be selected for the equipment. The over current sensor circuit and the reverse-bias protection circuit are built-in. It is a very rugged design because the ESD protection is high. Therefore, the TK112xxC can be used with confidence. When mounted on the PCB, the power dissipation rating becomes about 600mW/ 900mW, even though the packages are very small. The TK112xxC features very high stability in both DC and AC. The capacitor on the output side provides stable operation with 0.1mF with 2.5V Vout. A capacitor of any type can be used; however, the larger this capacitor is, the better the overall characteristics are. GC3-H026H Page 2 TK112xxCM/U ORDERING INFORMATION T K 1 1 2 C Environment Code -GH : Lead Free and Halogen Free (SOT23L-6) -G : Lead Free (SOT89-5) Voltage Code (Refer to the following table) Version C Tape / Reel Code L : Left Type (SOT23L-6) B : Back Type (SOT89-5) Package Code M : SOT23L-6 U : SOT89-5 Rank Code C : C Rank I : I Rank Voltage Code V OUT 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 V CODE 15 16 17 18 19 20 21 22 23 24 V OUT 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 V CODE 25 26 27 28 29 30 31 32 33 34 V OUT 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2 4.3 4.4 GC3-H026H V CODE 35 36 37 38 39 40 41 42 43 44 V OUT 4.5 4.6 4.7 4.8 4.9 5.0 V CODE 45 46 47 48 49 50 Page 3 TK112xxCM/U Absolute Maximum Ratings Ta=25C Parameter Symbol Rating Units Conditions Supply Voltage VccMAX -0.4 ~ 16 V Reverse Bias VrevMAX -0.4 ~ 6 V Vout 2.0V -0.4 ~ 12 V 2.1V Vout Np pin Voltage Control pin Voltage VnpMAX VcontMAX -0.4 ~ 5 -0.4 ~ 16 V V Storage Temperature Range Tstg C Power Dissipation PD -55 ~ 150 SOT23L-6: 600 SOT89-5: 900 Absolute Maximum Ratings mW Internal Limited Tj=150C * Operating Condition Operating Temperature Range TOP Operating Voltage Range VOP -40 ~ 85 C 2.1 ~ 14.5 V TOP =-40 ~ 85C 1.8 ~ 14.5 V TOP =-30 ~ 80C Short Circuit Current Ishort 500 mA * PD must be decreased at rate of 4.8mW/C(SOT23L-6), 7.2mW/C(SOT89-5) for operation above 25C. The maximum ratings are the absolute limitation values with the possibility of the IC being damaged. If the operation exceeds any of these standards, quality cannot be guaranteed. GC3-H026H Page 4 TK112xxCM/U Electrical Characteristics (1) C rank The operation between -40 ~ 85C is guaranteed by design. The parameter with limit value will be guaranteed with test when manufacturing or SQC (Statistical Quality Control) technique. Vin=VoutTYP+1V,Vcont=1.8V,Ta=25C Value Parameter Symbol Conditions Units MIN TYP MAX Output Voltage Vout V Iout = 5mA Refer to TABLE 1 Line Regulation LinReg 0.0 6.0 mV DVin = 5V Load Regulation LoaReg mV Iout = 5mA ~ 100mA Refer to TABLE 1 mV Iout = 5mA ~ 200mA Refer to TABLE 1 mV Iout = 5mA ~ 300mA Refer to TABLE 1 Dropout Voltage *1 Vdrop 105 170 mV Iout = 100mA 170 270 mV Iout = 200mA 235 370 mV Iout = 270mA (2.1V Vout 2.3V) 235 370 mV Iout = 300mA (2.4V Vout) Maximum Output Current *2 IoutMAX 380 480 mA When (VoutTYP0.9) Supply Current Iq 65 90 mA Iout = 0mA Standby Current Istandby 0.0 0.1 mA Vcont = 0V Quiescent Current Ignd 1.8 3.0 mA Iout = 100mA Control Terminal Control Current Icont - 5.0 10 Control Voltage Vcont 1.8 1.6 - - 0.35 0.6 mA V V V V Vcont = 1.8V Vout ON state Vout OFF state Vout ON state Vout OFF state TOP=-40~85C TOP=-30~80C *1: For Vout 2.0V , no regulations. *2: The maximum output current is limited by power dissipation. GC3-H026H Page 5 TK112xxCM/U TABLE 1. Output Voltage , Load Regulation Output Voltage Part Number TK11213C TK11214C TK11215C TK11216C TK11217C TK11218C TK11219C TK11220C TK11221C TK11222C TK11223C TK11224C TK11225C TK11226C TK11227C TK11228C TK11229C TK11230C TK11231C TK11232C TK11233C TK11234C TK11235C TK11236C TK11237C TK11238C TK11239C TK11240C TK11241C TK11242C TK11243C TK11244C TK11245C TK11246C TK11247C TK11248C TK11249C TK11250C MIN V 1.250 1.350 1.450 1.550 1.650 1.750 1.850 1.950 2.050 2.150 2.250 2.350 2.450 2.550 2.650 2.750 2.850 2.950 3.050 3.150 3.250 3.349 3.447 3.546 3.644 3.743 3.841 3.940 4.038 4.137 4.235 4.334 4.432 4.531 4.629 4.728 4.826 4.925 TYP V 1.300 1.400 1.500 1.600 1.700 1.800 1.900 2.000 2.100 2.200 2.300 2.400 2.500 2.600 2.700 2.800 2.900 3.000 3.100 3.200 3.300 3.400 3.500 3.600 3.700 3.800 3.900 4.000 4.100 4.200 4.300 4.400 4.500 4.600 4.700 4.800 4.900 5.000 MAX V 1.350 1.450 1.550 1.650 1.750 1.850 1.950 2.050 2.150 2.250 2.350 2.450 2.550 2.650 2.750 2.850 2.950 3.050 3.150 3.250 3.350 3.451 3.553 3.654 3.756 3.857 3.959 4.060 4.162 4.263 4.365 4.466 4.568 4.669 4.771 4.872 4.974 5.075 Iout = 100mA TYP MAX mV mV 11 24 11 24 11 24 11 24 11 25 11 25 11 25 11 25 11 26 12 26 12 26 12 26 12 27 12 27 12 27 12 27 12 27 12 28 12 28 12 28 13 28 13 29 13 29 13 29 13 29 13 29 13 30 13 30 13 30 13 30 14 31 14 31 14 31 14 31 14 31 14 32 14 32 14 32 GC3-H026H Load Regulation Iout = 200mA TYP MAX mV mV 21 49 22 49 22 50 22 50 22 51 23 51 23 52 23 53 23 53 24 54 24 54 24 55 24 55 25 56 25 56 25 57 25 58 26 58 26 59 26 59 26 60 27 60 27 61 27 62 27 62 28 63 28 63 28 64 28 64 29 65 29 66 29 66 29 67 30 67 30 68 30 68 30 69 31 70 Iout = 300mA TYP MAX mV mV 34 77 34 78 35 79 35 80 36 82 36 83 37 84 37 85 38 86 38 88 39 89 39 90 40 91 40 92 41 93 41 95 42 96 42 97 43 98 44 99 44 101 45 102 45 103 46 104 46 105 47 107 47 108 48 109 48 110 49 111 49 112 50 114 50 115 51 116 51 117 52 118 52 120 53 121 Page 6 TK112xxCM/U TABLE 1. Output Voltage , Load Regulation (continue) Output Voltage Part Number TK11251C TK11253C TK11254C TK11255C TK11260C TK11280C MIN V 5.023 5.220 5.319 5.417 5.910 7.880 TYP V 5.100 5.300 5.400 5.500 6.000 8.000 MAX V 5.177 5.380 5.481 5.583 6.090 8.120 Iout = 100mA TYP MAX mV mV 14 32 15 33 15 33 15 33 15 34 17 39 GC3-H026H Load Regulation Iout = 200mA TYP MAX mV mV 31 70 31 71 32 72 32 72 33 75 38 87 Iout = 300mA TYP MAX mV mV 53 121 54 124 55 125 55 127 58 133 68 156 Page 7 TK112xxCM/U (2) I rank The operation between -40 ~ 85C is guaranteed with normal test. The parameter with limit value will be guaranteed with test when manufacturing or SQC(Statistical Quality Control) technique. Vin=VoutTYP+1V,Vcont=1.8V,Ta=-40 ~ 85C Parameter Symbol Value MIN TYP MAX Refer to TABLE 1 0.0 8.0 Units Output Voltage Vout Line Regulation LinReg Load Regulation LoaReg Dropout Voltage *1 Vdrop Maximum Output Current *2 IoutMAX Supply Current Iq 65 100 mA Standby Current Istandby 0.0 0.5 Quiescent Current Ignd 1.8 3.6 mA mA Control Current Icont 5.0 12 Control Voltage Vcont Refer to TABLE 1 Refer to TABLE 1 Refer to TABLE 1 105 200 170 320 235 440 340 480 V mV mV mV mV mV mV mV mA Conditions Iout = 5mA DVin = 5V Iout = 5mA ~ 100mA Iout = 5mA ~ 200mA Iout = 5mA ~ 300mA Iout = 100mA (2.2V Vout) Iout = 200mA (2.2V Vout) Iout = 300mA (2.4V Vout) When (VoutTYP0.9) Iout = 0mA Vcont = 0V Iout = 100mA Control Terminal 1.8 0.35 mA V V Vcont = 1.8V Vout ON state Vout OFF state *1: For Vout 2.1V , no regulations. *2: The maximum output current is limited by power dissipation. GC3-H026H Page 8 TK112xxCM/U TABLE 1. Output Voltage , Load Regulation Output Voltage Part Number TK11213C TK11214C TK11215C TK11216C TK11217C TK11218C TK11219C TK11220C TK11221C TK11222C TK11223C TK11224C TK11225C TK11226C TK11227C TK11228C TK11229C TK11230C TK11231C TK11232C TK11233C TK11234C TK11235C TK11236C TK11237C TK11238C TK11239C TK11240C TK11241C TK11242C TK11243C TK11244C TK11245C TK11246C TK11247C TK11248C TK11249C TK11250C MIN V 1.220 1.320 1.420 1.520 1.620 1.720 1.820 1.920 2.020 2.120 2.220 2.320 2.420 2.520 2.620 2.720 2.820 2.920 3.020 3.120 3.217 3.315 3.412 3.510 3.607 3.705 3.802 3.900 3.997 4.095 4.192 4.290 4.387 4.485 4.582 4.680 4.777 4.875 TYP V 1.300 1.400 1.500 1.600 1.700 1.800 1.900 2.000 2.100 2.200 2.300 2.400 2.500 2.600 2.700 2.800 2.900 3.000 3.100 3.200 3.300 3.400 3.500 3.600 3.700 3.800 3.900 4.000 4.100 4.200 4.300 4.400 4.500 4.600 4.700 4.800 4.900 5.000 MAX V 1.380 1.480 1.580 1.680 1.780 1.880 1.980 2.080 2.180 2.280 2.380 2.480 2.580 2.680 2.780 2.880 2.980 3.080 3.180 3.280 3.383 3.485 3.588 3.690 3.793 3.895 3.998 4.100 4.203 4.305 4.408 4.510 4.613 4.715 4.818 4.920 5.023 5.125 Iout = 100mA TYP MAX mV mV 11 29 11 29 11 29 11 29 11 30 11 30 11 30 11 30 11 31 12 31 12 31 12 31 12 31 12 32 12 32 12 32 12 32 12 33 12 33 12 33 13 33 13 33 13 34 13 34 13 34 13 34 13 34 13 35 13 35 13 35 14 35 14 36 14 36 14 36 14 36 14 36 14 37 14 37 GC3-H026H Load Regulation Iout = 200mA TYP MAX mV mV 21 60 22 61 22 61 22 62 22 63 23 63 23 64 23 65 23 65 24 66 24 67 24 68 24 68 25 69 25 70 25 70 25 71 26 72 26 73 26 73 26 74 27 75 27 75 27 76 27 77 28 77 28 78 28 79 28 80 29 80 29 81 29 82 29 82 30 83 30 84 30 84 30 85 31 86 Iout = 300mA TYP MAX mV mV 34 95 34 96 35 97 35 98 36 100 36 118 37 120 37 122 38 124 38 126 39 127 39 129 40 131 40 133 41 135 41 137 42 139 42 141 43 143 44 145 44 147 45 149 45 151 46 153 46 155 47 157 47 159 48 161 48 162 49 164 49 166 50 168 50 170 51 172 51 174 52 176 52 178 53 180 Page 9 TK112xxCM/U TABLE 1. Output Voltage , Load Regulation (continue) Output Voltage Part Number TK11255C TK11257C TK11260C TK11280C MIN V 5.362 5.557 5.850 7.800 TYP V 5.500 5.700 6.000 8.000 MAX V 5.638 5.843 6.150 8.200 Iout = 100mA TYP MAX mV mV 15 38 15 38 15 39 17 43 GC3-H026H Load Regulation Iout = 200mA TYP MAX mV mV 32 89 32 91 33 93 38 107 Iout = 300mA TYP MAX mV mV 55 190 56 194 58 199 68 238 Page 10 TK112xxCM/U Top view Pin Layout Vin GND Vout 6 5 4 Vout GND Vin 6 5 4 SOT89 SOT-23L 1 2 3 1 on/off GND Np(Vref) Control Np(Vref) 2 3 GND on/off Control Application Iin GND Vin A Vout CL=0.22mF Vin Iout A Vcont V (CL=1.0mF) Cin=0.1mF Cont. GND Np Icont Cnp=0.1mF Block Diagram Vout Vin Control Circuit Cont. Bandgap Reference Constant Current Source Thermal & Over Current Protect 500k GND Np GC3-H026H Page 11 TK112xxCM/U Input /Output Capacitors Linear regulators require input and output capacitors in order to maintain the regulator's loop stability. If a 0.1mF capacitor is connected to the output side, the IC provides stable operation at any voltage in the practical current region. However, increase the CL capacitance when using the IC in the low current region and low voltage. Otherwise, the IC oscillates. The equivalent series resistance (ESR) of the output capacitor must be in the stable operation area. However, it is recommended to use as large a value of capacitance as is practical. The output noise and the ripple noise decrease as the capacitance value increases. ESR values vary widely between ceramic and tantalum capacitors. However, tantalum capacitors are assumed to provide more ESR damping resistance, which provides greater circuit stability. This implies that a higher level of circuit stability can be obtained by using tantalum capacitors when compared to ceramic capacitors with similar values. Vout The recommended value : Cin=CL=0.22mF(MLCC) Iout 0.5mA. Cin=0.22mF The input capacitor is necessary when the battery is discharged, the power supply impedance ~ 0.1mF increases, or the line distance to the power supply is long. CL=0.22mF This capacitor might be necessary on each individual IC even if two or more regulator ICs are used. It is not possible ~ to 0.1mF determine this indiscriminately. Please confirm the stability while mounted. The IC provides stable operation with an output side capacitor of 0.1mF (Vout 2.5V). If it is 0.1mF or more over the full range of temperature, either a ceramic capacitor or tantalum capacitor can be used without considering ESR. It is not possible to say indiscriminately. Please confirm stability while mounted. Output voltage, Output current vs. Stable Operation Area CL=0.1 mF 1 Stable Area ESR[W] Stable Area CL=0.068mF 1 0.1 0.01 4.0 50 Iout 100 [mA] CL=0.068mF 50 Iout 100 [mA] 150 CL=0.068mF 1 50 100 150 Iout [mA] CL0.68mF All Stable Stable Area CL=0.068mF 1 0.1 0.01 0.01 0.5 CL1.0mF All Stable CL2.2mF All Stable 10 Stable Area 0.1 0.1 0.01 2.0 150 Stable Area Vout=5.0V 100 10 1 0.1 Vout=4.0V 100 10 ESR[W] 10 ESR [W] 10 Vout=2.5V, 3.0V 100 ESR[W] Vout=1.8V , 2.2V 100 ESR [W] Vout=1.5V 100 0.01 0.5 50 100 150 Iout [mA] CL0.33mF All Stable 0.5 50 100 150 Iout [mA] CL0.33mF All Stable The above graphs show stable operation with a ceramic capacitor of 0.1uF (excluding the low current region). If the capacitance is not increased in the low voltage, low current area, stable operation may not be achieved. Please select the best output capacitor according to the voltage and current used. The stability of the regulator improves if a big output side capacitor is used (the stable operation area extends.) Please use as large a capacitance as is practical. Although operation above 150 mA has not been described, stability is equal to or better than operation at 150 mA. 100 90 80 70 60 50 % Kyocera :CM05B104K10AB , CM05B224K10AB , CM105B104K16A , CM105B224K16A Murata :GRM36B104K10 , GRM42B104K10 , GRM39B104K25 , GRM39B224K10 , GRM39B105K6.3 Capacitance vs. Voltage B Curve F Curve 0 2 4 6 Bias voltage(V) 8 10 % Capacitance vs. Temperature 100 90 80 70 60 50 B Curve CAP CAP For evaluation -50 F Curve -25 0 25 50 Ta(C) GC3-H026H 75 , CM21B225K10A Generally, a ceramic capacitor has both a temperature characteristic and a voltage characteristic. Please consider both characteristics when selecting the part. The B curves are the recommend characteristics. 100 Page 12 TK112xxCM/U Output noise TK11230C Cnp vs. Noise Iout=30mA BPF=400Hz ~ 80kHz TK11230C Cnp vs Noise NoisemVrms) Iout=30mA BPF:400 300 CL=MLCC TK112xxC ~ 80kHz CL=0.22mF CL=0.47mF CL=1.0mF CL=2.2mF CL=10mF 250 200 150 Vout vs Noise Noise Iout=30mA Cnp=10000pF CL=0.22mF(MLCC) (mVrms) BPF:400 ~ 80kHz 90 80 70 60 50 100 40 CL=Tantal 30 50 20 0 1 10 TK11230C Noise(mVrms) 95 90 85 80 75 70 65 60 55 50 45 40 35 100 CnpF 1000 Cnp=10000pF BPF:400 50 100 200 TK11230C Noise(mVrms) ~ 80kHz 95 90 85 80 75 70 65 60 55 50 45 40 35 CL=0.22uF CL=0.47uF CL=1.0uF CL=2.2uF CL=10uF 150 10 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 Vout(V) 100000 Iout vs. Noise CL=MLCC 0 10000 250 300 Iout vs Noise Cnp=10000pF BPF:400 CL=0.22uF CL=0.47uF CL=1.0uF CL=2.2uF CL=10uF CL=Tantal 0 50 100 ~ 80kHz 150 200 250 300 Iout(mA) Iout(mA) Increase Cnp to decrease the noise. The recommended Cnp capacitance is 6800pF(682) ~ 0.22mF(224). The amount of noise increases with the higher output voltages. Noise(mV/OHz) Noise Level(1/f) 10 Cnp=1000pF 1 TK11230CM Cnp=0.1mF 0.1 Cin=10mF Iout=10mA CL=0.22mFCeramic) Cnp=0.01mF 0.01 10 100 1k Frequency(Hz) 10k 100k GC3-H026H Page 13 TK112xxCM/U Ripple rejection Vin=5.0V Vout=3.0V Iout=10mA f=100 ~ 1MHz Cnp=0.1uF VR=500mVp-p CL=0.22uF (MLCC) Vin Vout 112XX CL CL=0.22 uF (Tantal) Vcont Cnp 0.1mF GND CL=1uF (MLCC) B : CL=0.22uF (Tantal) B : Cref=0.001uF CL=1 uF (Tantal) A : CL=10uF (Tantal) A : Cref=0.1uF The ripple rejection characteristic depends on the characteristic and the capacitance value of the capacitor connected to the output side. The RR characteristic of 50KHz or more varies greatly with the capacitor on the output side and PCB pattern. If necessary, please confirm stability while operating. Ripple Rejection vs. Iout R.R(dB) 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 Cnp=0.01F CL=0.22FCeramic) Vin=5.0V Vripple=500mVp-p Freq=1kHz Freq=400Hz 0 50 100 150 Iout(mA) 200 250 300 Ripple Rejection at Low Vin R.R (dB) 0 -10 Iout :1, 50, 100, 150, 200, 250, 300mA -20 -30 -40 -50 -60 -70 -80 Without Cin Vripple:100mVp-p Freq:1kHz Cnp:0.01F CL:0.22FCeramic) -90 -100 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 Vin-Vout_Typ(V) GC3-H026H Page 14 TK112xxCM/U TK112xxC Transient * ON / OFF Transient Vin =VoutTYP+1V 6 4 Iout=30mA 112xxC Cin 1mF CL 1 3 Vcont=0VU2V (f=100Hz) CL= Variable Vcont OFF Cnp=0.001mF ON CL= Variable Vcont CL= 0.22mF Cnp=0.01mF ON CL= 0.22mF 1.0mF Vout OFF Cnp 1.0mF , 2.2mF Vout 2.2mF 1.0V/div 50ms/div 1.0V/div 10ms/div Cnp= Variable Vcont OFF CL=1mF ON CL= Variable Cnp=0.01mF Vcont Cnp= 0.001mF ON OFF 0.01mF CL= 0.22mF 1.0mF Vout Io=30mA Vout 0.1mF 2.2mF 1.0V/div 250ms/div 1.0V/div 250ms/div The rise time of the regulator depends on CL and Cnp; the fall time depends on CL. GC3-H026H Page 15 TK112xxCM/U * LOAD Transient CL= Variable Cnp=0.01mF 33mA Iout Vin =VoutTYP+1V 33mA 3mA 3mA 6 Iout ONUOFF 4 112xxC Cin 1mF CL=1.0mF 2.2mF Vout CL 1 3 Vcont 1.8V Cnp 0.01mF CL=0.22mF When the capacitor on the load side is increased, the load change becomes smaller. Magnification Iout=0 U 30mA , 3 U 33mA 33mA Iout 3mA 30mA 0mA 30mA 33mA 0mA 3mA Iout Iout=0 U 30mA Iout=0U30mA Vout Vout Iout=3 U 33mA Iout=3U33mA The no load voltage change can be greatly improved by delivering a little load current to ground (see right curve above). Increase the load side capacitor when the load change is fast or when there is a large current change. In addition, at no load, the voltage change can be reduced by delivering a little load current to ground. * Line Transient Cnp= Variable CL=1mF CL= Variable Cnp=0.01mF Vin Vin D1V CL=0.22mF Vout Vout D1V Cnp=0.001mF Cnp=0.01mF CL=1.0mF Cnp=0.1mF CL=2.2mF GC3-H026H Page 16 TK112xxCM/U Line regulation DVout(mV) 15 10 5 0 -5 -10 -15 -20 -25 -30 -35 Load regulation DVout(mV) Vo1.5V Vo2.0V Vo3.0V Vo4.0V Vo5.0V 0 5 10 15 20 10 0 -10 -20 -30 -40 -50 -60 -70 -80 Vo=3.0V Vo=5.0V 0 Vin(V) 50 100 150 200 250 300 Iout(mA) Regulation point DVout(mV) Vo=2.0V Vdrop Vdrop(mV) 0 -50 -100 -150 -200 100 Iout=0mA,50mA,100mA,150mA,200mA,250mA,300mA 0.0 Iout=0mA -100 -250 -300 -350 -400 -450 -500 Iout=300mA -200 -300 100 DVin(mV) 0 100 200 300 Iout(mA) 400 500 Vcont vs. Icont Icont(mA) 20 15 Vout 10 Icont 5 0 0.0 1.0 2.0 3.0 Vcont(V) 4.0 5.0 GC3-H026H Page 17 TK112xxCM/U Short circuit current Vout(V) IoutMax at low Vop TK11215 ~ TK11224 IoutMax(mA) 500 6.0 450 400 350 300 250 5.0 4.0 3.0 200 150 100 50 0 2.0 1.0 0.0 0 100 200 300 400 500 1.7 1.8 1.9 Iout(mA) Istandby(A) GND current Ignd(mA) 12 11 10 9 8 7 6 5 4 3 2 1 0 2.0 2.1 VopV) 2.2 2.3 2.4 Standby current 1.E-04 1.E-05 Vo1.5V Vo2.0V Vo3.0V Vo4.0V Vo5.0V 1.E-06 1.E-07 1.E-08 1.E-09 1.E-10 1.E-11 1.E-12 0 50 150 100 200 250 300 Iout(mA) 0 2 4 6 8 10 12 14 16 18 20 Vin(V) Reverse bias current Irev(mA) 60 50 Vout=2V Vout=3V 40 Vout=4V 30 20 Vout=5V 10 0 0 1 2 3 4 5 6 7 Vrev(V) 8 9 10 GC3-H026H Page 18 TK112xxCM/U Temperature Characteristics (Ta: Ambient temperature) Max Iout Iout (mA) 500 16.0 480 14.0 460 12.0 440 10.0 420 8.0 400 6.0 380 4.0 360 340 -50 -25 0 25 50 Ta(C) 75 100 Io=150mA Io=100mA Io=50mA Control current 1.6 1.5 1.4 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 Vcont=1.8V 0 25 50 Ta(C) 75 100 Dropout voltae Vdrop(mV) 350 250 450 400 200 350 Io=150mA 300 Io=100mA 100 50 250 Io=50mA -25 0 25 50 Ta(C) 25 50 75 100 Vcont(ONpoint) Vcont(OFFpoint) -50 -25 75 0 25 50 Ta(C) 75 100 Output current Vin=1.9/2.0/2.1/2.2/2.3/2.4/2.5V 500 Io=200mA 150 0 on/off point IoutMAX(mA) 550 Io=300mA 300 -25 Vcont(V) Vcont=2.0V -25 -50 Ta(C) Vcont=3.0V 0 -50 Io=200mA 0.0 Vcont=4.0V -50 Io=300mA 2.0 Vout=(VoutTyp. 0.9 Icont(mA) 20.0 18.0 16.0 14.0 12.0 10.0 8.0 6.0 4.0 2.0 0.0 GND current Ignd(mA) Vin=2.2V Vin=2.1V Vin=2.0V 200 100 150 -50 GC3-H026H Vin=1.9V -25 0 25 Ta(C) 50 75 100 Page 19 TK112xxCM/U Output voltage vs. Temperature characteristics DVout(mV) 20 15 10 5 0 -5 -10 -15 -20 -25 -30 Vout=1.5V -35-50 0 -25 DVout(mV) 20 15 10 5 0 -5 -10 -15 -20 -25 -30 -35 -50 -25 DVout(mV), 20 15 10 5 0 -5 -10 -15 -20 -25 -30 -35 -50 -25 25 50 Ta(C) 75 100 DVout(mV) 20 15 10 5 0 -5 -10 -15 -20 -25 -30 -35 -50 -25 DVout(mV) 20 15 10 5 0 -5 -10 -15 -20 -25 -30 -35 -50 -25 Vout=3.0V 0 25 Ta() 50 75 100 50 75 100 Vout=2.0V 0 25 50 Ta(C) 75 100 75 100 Vout=4.0V 0 25 Ta() 50 Vout=5.0V 0 25 Ta() GC3-H026H Page 20 TK112xxCM/U Layout PCB Material : Glass epoxy t=0.8mm SOT-23L SOT-89 Vout Vin Derating Curve Pd(mW) Vout Vin SOT-89 -7.2mW/C 900 SOT-23- L -4.8mW/C 600 On/of on/off Please do derating with 4mW/C at Pd=500mW and 25C or more. Thermal resistance is (qja=250C / W). Please do derating with 7.2mW/C at Pd=900mW and 25C or more. Thermal resistance is ( qja=138C / W) 0 0 25 50C 100 150 (85)C The package loss is limited at the temperature that the internal temperature sensor works (about 150C). Therefore, the package loss is assumed to be an internal limitation. There is no heat radiation characteristic of the package unit assumed because of the small size. Heat is carried away by the device being installed on the PCB. This value changes by the material and the copper pattern etc. of the PCB. The losses are approximately 600mW (SOT-23L) : 900mW(SOT-89). Enduring these losses becomes possible in a lot of applications operating at 25C. Determining the thermal resistance when mounted on a PCB. The operating chip junction temperature is shown by Tj=qja Pd + Ta. Tj of the IC is set to about 150C. Pd is a value when the overtemperature sensor is made to work. Ta (Ta=25C) 150 = qja pd + 25 qja Pd = 125 qja = (125/ pd) (C / mW) Pd is easily obtained. Mount the IC on the PCB. Pd becomes Vin Iin when the output side of the IC is short-circuited. The input current decreases gradually by the temperature rise of the chip. Please use the value when the current is steady (thermal equilibrium is reached). In many cases, heat radiation is good, and Pd becomes 600mW/900 mW or more. Pd is obtained by the normal temperature in degrees. The current that can be used at the highest operating temperature is obtained from the graph of the figure below. Pd(mW) Procedure (Do when PCB mounted). 1. Pd is obtained (Vin Iin when the output side is short-circuited). 2. Pd is plotted on the horizontal line to 25C. 3. Pd is connected with the point of 150C by the straight line (bold face line). 4. A line is extended vertically above the point of use temperature in the design. For instance, 75C is assumed (broken line). 5. Extend the intersection of the derating curve (fat solid line) and (broken line) to the left and read the Pd value. 2 Pd DPd 5 3 6. DPd (Vinmax - Vout)=Iout (at 75C) 4 0 25 50 (75) 100 150C The maximum current that can be used at the highest operating temperature is: Iout @ DPd (Vinmax - Vout). GC3-H026H Page 21 TK112xxCM/U Application hint On/Off Control It is recommended to turn the regulator Off when the circuit following the regulator is non-operating. A design with little electric power loss can be implemented. We recommend the use of the on/off control of the regulator without using a high side switch to provide an output from the regulator. A highly accurate output voltage with low voltage drop is obtained. REG VsatO P On/Off Cont. Because the control current is small, it is possible to control it directly by CMOS logic. The PULLDOWN resistance (500KW) is built into the control terminal. The noise and the ripple rejection characteristics depend on the capacitance on the Vref terminal. The ripple rejection characteristic of the low frequency region improves by increasing the capacitance of Cnp. A standard value is Cnp=0.068mF. Increase Cnp in a design with important output noise and ripple rejection requirements. The IC will not be damaged if the capacitor value is increased. The on/off switching speed changes depending on the Np terminal capacitance. The switching speed slows when the capacitance is large. Parallel connected ON/OFF Control TK11250C Vin TK11233C 5V 3.3V R TK11220C On/Off Cont. 2.0V The figure at the left illustrates multiple regulators being controlled by a single On/Off control signal. There is a possibility of overheating because the power loss of the low voltage side IC (TK11220C) is large. The series resistor (R) is put in the input line of the low output voltage regulator in order to prevent overdissipation. The voltage dropped across the resistor reduces the large input-to-output voltage across the regulator, reducing the power dissipation in the device. When the thermal sensor works, a decrease of the output voltage, oscillation, etc. may be observed. GC3-H026H Page 22 TK112xxCM/U Definition of Terms The output voltage tables are specified with a test voltage of Vin=Output Voltage (Typ.) + 1V. Output Voltage ( Vout ) The output voltage is specified with (Vin = Output Voltage (Typ.) + 1V) and output current (Iout=5mA). Maximum Output Current ( Iout Max ) The output current is measured when the output voltage decreases to (VoutTyp. x 0.9). The input voltage is (Output Voltage (Typ.) + 1V). The maximum output current is measured in a short time so that it is not influenced by the temperature of the chip. The output current decreases with low voltage operation. Please refer to the "Low input voltage-output current" graph for 2.1V or less. Dropout Voltage ( Vdrop ) 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 (Iout) and the junction temperature (Tj). The input voltage is gradually decreased below the test voltage. It is the voltage difference between the input and the output when the output voltage decreases by 100mV. Line Regulation ( Lin 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 (Output Voltage (Typ.) + 1V) to (Output Voltage (Typ.) + 6V). This measurement is not influenced by the temperature of the IC and is measured in a short time. Load Regulation ( Load Reg ) Load regulation is the ability of the regulator to maintain a constant output voltage as the load current changes. The input voltage is set to (Output Voltage (Typ.) + 1V). The output voltage change is measured as the load current changes from to 5 to 100mA and from 5 to 200mA. This measurement is not influenced by the temperature of the IC and is measured in a short time. Quiescent Current ( Iq ) The quiescent current is the current which flows through the ground terminal under no load conditions (Io=0mA). Ripple Rejection ( 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 the input voltage = ( Vout + 1.5V ) , Iout=10mA, CL=1.0mF and Cnp=0.01mF An Alternating Current source of (f=1kHz and 200mVRMS) is superimposed to the power-supply voltage. Ripple rejection is the ratio of the ripple content of the output vs. the input and is expressed in dB. It is typically about 80dB at 1KHz. The ripple rejection improves when the value of the capacitor at the noise bypass terminal in the circuit is large. However, the on/off response worsens. Standby Current.( Istandby ) Standby current is the current which flows into the regulator when the control voltage is made 0 volts. It is measured with an input voltage of 8V. GC3-H026H Page 23 TK112xxCM/U PROTECTION CIRCUITS Thermal Sensor The thermal sensor protects the device if the junction temperature exceeds the safe value (Tj=150 C). This temperature rise can be caused by extreme heat, excessive power dissipation caused by large output voltage drops, or excessive output current. The regulator will shut off when the temperature exceeds the safe value. As the junction temperature decreases, the regulator will begin to operate again. Under sustained fault conditions, the regulator output will oscillate as the device turns off then resets. Please improve heat radiation or lower the input electric power. When heat radiation is poor, the forecast package loss is not obtained. * In the case that the power, Vin Ishort(Short Circuit Current), becomes more than twice of the maximum rating of its power dissipation in a moment, there is a possibility that the IC is destroyed before internal thermal protection works. Reverse Bias Current The reverse bias protection prevents excessive current from flowing through the Vin IC even if the input voltage becomes 0 with voltage impressed on the output side (input short-circuited to GND). The maximum reverse bias voltage is 6V. * ESD .......... MM 200pF 0W HBM 100pF 1.5kW Vout GND 200V Min 2000V Min GC3-H026H Page 24 TK112xxCM/U Outline ; PCB ; Stamps SOT23L-6 Unit : mm General tolerance : 0.2 GC3-H026H Page 25 TK112xxCM/U SOT89-5 0.7Max 1.5 1.0 0.8 0.2 2.0 0.49Max 0.49Max 0.7 VOLTAGE CODE 1.0 R:112XX 45 1.5 TYPE CODE 2.5 XX LOT No 0.7 0.4 0.49Max 0.7Max 4.5 0.2 1.6 0.49Max 0.49Max e 1.5 0.54Max e 1.5 1.5 0.2 0.44Max Recommended Mount Pad 1.0 e 1.5 e 1.5 e' 3.0 2.5 0.2 1.0 +0.5 4.5 -0.3 Unit : mm General tolerance : 0.2 GC3-H026H Page 26 TK112xxCM/U 1. NOTES 2. OFFICES Please be sure that you carefully discuss your planned purchase with our office if you intend to use the products in this application manual under conditions where particularly extreme standards of reliability are required, or if you intend to use products for applications other than those listed in this application manual. Power drive products for automobile, ship or aircraft transport systems; steering and navigation systems, emergency signal communications systems, and any system other than those mentioned above which include electronic sensors, measuring, or display devices, and which could cause major damage to life, limb or property if misused or failure to function. Medical devices for measuring blood pressure, pulse, etc., treatment units such as coronary pacemakers and heat treatment units, and devices such as artificial organs and artificial limb systems which augment physiological functions. Electrical instruments, equipment or systems used in disaster or crime prevention. If you need more information on this product and other ASAHI KASEI TOKO POWER DEVICES products, please contact us. ASAHI KASEI TOKO POWER DEVICES CORPORATION 13-45, Senzui 3-chome, Asaka-shi, Saitama-ken 351-0024, Japan TEL: +81-48-460-1870 (Marketing Department) FAX: +81-48-460-1600 Semiconductors, by nature, may fail or malfunction in spite of our devotion to improve product quality and reliability. We urge you to take every possible precaution against physical injuries, fire or other damages which may cause failure of our semiconductor products by taking appropriate measures, including a reasonable safety margin, malfunction preventive practices and fire-proofing when designing your products. This application manual is effective from Aug. 2010. Note that the contents are subject to change or discontinuation without notice. When placing orders, please confirm specifications and delivery condition in writing. ASAHI KASEI TOKO POWER DEVICES is not responsible for any problems nor for any infringement of third party patents or any other intellectual property rights that may arise from the use or method of use of the products listed in this application manual. Moreover, this application manual does not signify that ASAHI KASEI TOKO POWER DEVICES agrees implicitly or explicitly to license any patent rights or other intellectual property rights which it holds. None of the ozone depleting substances(ODS) under the Montreal Protocol are used in our manufacturing process. YOUR DISTRIBUTOR GC3-H026H Page 27