[AP1153ADSXX] AP1153ADSXX 14V Input / 100mA Output LDO Regulator 1. General Description The AP1153ADSXX is a low dropout linear regulator with ON/OFF control, which can supply 100mA load current. The IC is an integrated circuit with a silicon monolithic bipolar structure. The output voltage, trimmed with high accuracy, is available from 1.3 to 5.0V in 0.1V steps. The output capacitor is available to use a small 0.22F ceramic capacitor. The over current, thermal and reverse bias protections are integrated, and also the package is small and thin type. The IC is designed for space saving requirements. 2. Feature Available to use a small 0.22F ceramic capacitor Dropout Voltage Output Current VDROP=160mV at 100mA 100mA 1.5% or 50mV High Precision output voltage High ripple rejection ratio 80dB at 1kHz 70dB at 10kHz Wide operating voltage range Very low quiescent current 2.1V to 14.0V IQUT=75A at IOUT=0mA On/Off control (High active) Built-in Short circuit protection, thermal shutdown Built-in reverse bias over current protection Available very low noise application Very small surface mount package SOT23-5 3. Application Automotive accessory equipment Any Electronic Equipment Battery Powered Systems Mobile Communication 015000869-E-00 -1- 2015/01 [AP1153ADSXX] 4. Table of Contents 1. 2. 3. 4. 5. 6. 7. General Description ........................................................................................................................................... 1 Feature................................................................................................................................................................ 1 Application......................................................................................................................................................... 1 Table of Contents ............................................................................................................................................... 2 Block Diagram ................................................................................................................................................... 3 Ordering Information ......................................................................................................................................... 4 Pin Configurations and Functions ...................................................................................................................... 5 Pin Configurations ............................................................................................................................................ 5 Functions .......................................................................................................................................................... 5 8. Absolute Maximum Ratings .............................................................................................................................. 6 9. Recommended Operating Conditions ................................................................................................................ 6 10. Electrical Characteristics.................................................................................................................................... 7 Electrical Characteristics of Ta=Tj=25C ........................................................................................................ 7 Electrical Characteristics of Ta=-40C~85C .................................................................................................. 9 11. Description ....................................................................................................................................................... 11 11.1 DC Characteristics .................................................................................................................................... 11 11.2 Temperature Characteristics ..................................................................................................................... 14 11.3 Ripple Rejection ....................................................................................................................................... 16 11.4 ON/OFF transient ..................................................................................................................................... 17 11.5 ON/OFF transient ..................................................................................................................................... 18 11.6 Line transient ............................................................................................................................................ 19 11.7 Output noise ............................................................................................................................................. 20 11.8 Stability..................................................................................................................................................... 21 11.9 Operating Region and Power Dissipation ................................................................................................ 23 11.10 ON/OFF Control ................................................................................................................................... 24 11.11 Noise Bypass ........................................................................................................................................ 25 11.12 The notes of the evaluation when output terminal is short-circuit to GND .......................................... 25 12. Definition of term............................................................................................................................................. 26 13. Recommended External Circuits ..................................................................................................................... 27 External Circuit ............................................................................................................................................... 27 Test Circuit ...................................................................................................................................................... 27 14. Package ............................................................................................................................................................ 28 Outline Dimensions ........................................................................................................................................ 28 15. Revise History .................................................................................................................................................. 29 IMPORTANT NOTICE .......................................................................................................................................... 30 015000869-E-00 -2- 2015/01 [AP1153ADSXX] 5. Block Diagram Vin VIN Vout VOUT Over Heat & Over Current Protection 500k 320k Control Circuit Vcont VCONT Bandgap Reference GND GND Np NP Figure 1. Block Diagram 015000869-E-00 -3- 2015/01 [AP1153ADSXX] 6. Ordering Information AP1153ADSXX Ta = -40 to 85C SOT23-5 Output Voltage Code For product name, please check the below chart. Please contact your authorized ASAHI KASEI MICRODEVICES representative for voltage availability. AP1153ADSXX Output voltage code Table 1. Standard Voltage Version, Output Voltage & Voltage Code XX 18 21 VOUT 1.8 2.1 XX 28 30 VOUT 2.8 3.0 XX 33 50 VOUT 3.3 5.0 Table 2. Optional Voltage Version, Output Voltage & Voltage Code XX VOUT XX VOUT XX VOUT 13 1.3 24 2.4 36 3.6 14 1.4 25 2.5 37 3.7 15 1.5 26 2.6 38 3.8 16 1.6 27 2.7 39 3.9 17 1.7 29 2.9 40 4.0 19 1.9 31 3.1 41 4.1 20 2.0 32 3.2 42 4.2 22 2.2 34 3.4 43 4.3 23 2.3 35 3.5 44 4.4 015000869-E-00 -4- XX 45 46 47 48 49 - VOUT 4.5 4.6 4.7 4.8 4.9 - 2015/01 [AP1153ADSXX] 7. Pin Configurations and Functions VIN VOUT Pin Configurations 5 4 1 2 3 VCONT GND NP (Top View) Functions Pin No. Pin Description Internal Equivalent Circuit Description Vcont 1 On/Off Control Terminal 1 Vcont > 1.8V : ON Vcont < 0.35V : OFF 320k VCONT 500k The pull-down resister (500k) is built-in. 2 GND - GND Terminal Np 3 Noise Bypass Terminal 3 NP Connect a bypass capacitor between GND. Vout Vin 4 4 VOUT Output Terminal Vref 5 VIN 015000869-E-00 - Input Terminal -5- 2015/01 [AP1153ADSXX] 8. Absolute Maximum Ratings Parameter Supply Voltage Symbol VccMAX Reverse Bias VrevMAX Np pin Voltage Control pin Voltage Junction temperature Storage Temperature Range VnpMAX VcontMAX Tj Tstg min -0.4 -0.4 -0.4 -0.4 -0.4 -55 max 16 6 12 5 16 150 150 Unit V V V V V C C Condition Vout2.0V 2.1VVout When mounted on PCB (Note 1) Note 1. Please do derating with 4.0mW/C at Pd=500mW and 25C or more. Thermal resistance JA = 250C/W. Power Dissipation PD - 500 mW WARNING: The maximum ratings are the absolute limitation values with the possibility of the IC breakage. When the operation exceeds this standard quality cannot be guaranteed. 9. Recommended Operating Conditions Parameter Symbol min typ max Unit Operating Temperature Range Operating Voltage Range Ta VOP -40 2.1 - 85 14 C V 015000869-E-00 -6- Condition 2015/01 [AP1153ADSXX] 10. Electrical Characteristics Electrical Characteristics of Ta=Tj=25C The parameters with min or max values will be guaranteed at Ta=Tj=25C. Parameter Output Voltage Line Regulation (VIN=Vouttyp+1V,Vcont=1.8V,Ta=Tj=25C, unless otherwise specified.) Symbol Condition min typ max Unit Iout = 5mA V Vout (Table 3, Table 4) 0.0 5.0 mV LinReg Vin = 5V Load Regulation LoaReg Dropout Voltage (Note 2) Vdrop Output Current(Note 3) Maximum Output Current (Note 3) Supply Current Standby Current Quiescent Current Control Terminal Control Current Iout Iout = 5mA ~ 50mA mV (Table 3, Table 4) Iout = 5mA ~ 100mA mV Iout = 50mA - 90 160 mV Iout = 100mA - 160 280 mV - - 100 mA 150 200 - mA A IoutMAX Vout=VoutTYP0.9 Icc Istandby Iq Iout = 0mA - 75 120 Vcont = 0V - 0.0 0.1 A Iout = 50mA - 1.5 2.7 mA Icont Vcont = 1.8V - 5.0 15.0 A Vout ON state 1.8 - - V - - 0.35 V Vnp - 1.26 - V Output Voltage / Temp. Vout/Ta - 35 - Short Circuit Current Output Noise Voltage (VoutTYP=3.0V) ISHORT - 200 - mA Cout=1.0F, Cnp=0.01F Iout=30mA - 38 - V rms Cout=1.0F, Cnp=0.001F Iout=10mA, f=1kHz - 80 - dB f=10kHz - 70 - dB Cout=1.0F, Cnp=0.001F Vcont: Pulse Wave (100Hz) Vcont ON Vout95% point - 35 - s Control Voltage Reference Value Np Terminal Voltage Ripple Rejection (VoutTYP=3.0V) Rise Time (VoutTYP=3.0V) Vcont Vnoise RR tr Vout OFF state ppm /C Note 2. For Vout 2.0V , no regulations. Note 3. The maximum output current is limited by power dissipation. General Note: Parameter with only typical value is for reference only. 015000869-E-00 -7- 2015/01 [AP1153ADSXX] Table 3. Standard Voltage Version Output Voltage Part Number AP1153ADS18 AP1153ADS21 AP1153ADS28 AP1153ADS30 AP1153ADS33 AP1153ADS50 min typ max V 1.750 2.050 2.750 2.950 3.250 4.925 V 1.800 2.100 2.800 3.000 3.300 5.000 V 1.850 2.150 2.850 3.050 3.350 5.075 Load Regulation Iout = 50mA Iout = 100mA typ max typ max V V mV mV 5 12 11 26 5 12 12 28 6 14 14 34 6 15 15 35 7 16 16 37 9 20 21 50 Table 4. Optional Voltage Version Load Regulation Output Voltage Part Number AP1153ADS13 AP1153ADS14 AP1153ADS15 AP1153ADS16 AP1153ADS17 AP1153ADS19 AP1153ADS20 AP1153ADS22 AP1153ADS23 AP1153ADS24 AP1153ADS25 AP1153ADS26 AP1153ADS27 AP1153ADS29 AP1153ADS31 AP1153ADS32 AP1153ADS34 AP1153ADS35 AP1153ADS36 AP1153ADS37 AP1153ADS38 AP1153ADS39 AP1153ADS40 AP1153ADS41 AP1153ADS42 AP1153ADS43 AP1153ADS44 AP1153ADS45 AP1153ADS46 AP1153ADS47 AP1153ADS48 AP1153ADS49 015000869-E-00 min typ max V 1.250 1.350 1.450 1.550 1.650 1.850 1.950 2.150 2.250 2.350 2.450 2.550 2.650 2.850 3.050 3.150 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 V 1.300 1.400 1.500 1.600 1.700 1.900 2.000 2.200 2.300 2.400 2.500 2.600 2.700 2.900 3.100 3.200 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 V 1.350 1.450 1.550 1.650 1.750 1.950 2.050 2.250 2.350 2.450 2.550 2.650 2.750 2.950 3.150 3.250 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 -8- Iout = 50mA typ max V V 5 10 5 10 5 11 5 11 5 11 5 12 5 12 6 13 6 13 6 13 6 14 6 14 6 14 6 15 7 15 7 15 7 16 7 16 7 17 7 17 7 17 8 17 8 18 8 18 8 18 8 18 8 19 8 19 8 19 8 20 9 20 9 20 Iout = 100mA typ max mV mV 10 22 10 23 10 24 11 25 11 25 11 27 12 28 12 29 13 30 13 31 13 31 14 32 14 33 15 34 15 36 16 37 16 38 16 39 17 40 17 40 17 41 18 42 18 43 18 43 19 44 19 45 19 46 20 46 20 47 20 48 21 49 21 49 2015/01 [AP1153ADSXX] Electrical Characteristics of Ta=-40C~85C The parameters with min or max values will be guaranteed at Ta=Tj=-40 ~ 85C. Parameter Output Voltage Line Regulation (VIN=VoutTYP+1V,Vcont=1.8V,Ta=-40 ~ 85C, unless otherwise specified.) Symbol Condition min typ max Unit Iout = 5mA V Vout (Table 5, Table 6) mV LinReg Vin = 5V 0.0 8.0 Load Regulation LoaReg Dropout Voltage (Note 4) Vdrop Output Current(Note 5) Maximum Output Current (Note 5) Supply Current Standby Current Quiescent Current Control Terminal Control Current Iout Control Voltage IoutMAX Iout = 5mA ~ 50mA Iout = 5mA ~ 100mA 90 160 Iout = 50mA Iout = 100mA Vout=VoutTYP0.9 mV (Table 5, Table 6) 110 mV 205 360 100 mV 200 - mA mV mA Icc Iout = 0mA 75 145 A Istandby Vcont = 0V 0.0 0.5 A Iq Iout = 50mA 1.5 3.3 mA Icont Vcont = 1.8V - 5.0 15.0 A Vout ON state 1.8 - - V - - 0.35 V Vcont Vout OFF state Reference Value Np Terminal Voltage Vnp Output Voltage / Temp. Vout/Ta 35 Short Circuit Current Output Noise Voltage (VoutTYP=3.0V) ISHORT 200 mA Cout=1.0F, Cnp=0.01F Iout=30mA 38 V rms Cout=1.0F, Cnp=0.001F Iout=10mA, f=1kHz 80 dB f=10kHz 70 dB Cout=1.0F, Cnp=0.001F Vcont: Pulse Wave (100Hz) Vcont ON Vout95% point 35 s Ripple Rejection (VoutTYP=3.0V) Rise Time (VoutTYP=3.0V) Vnoise RR tr 1.26 V ppm /C Note 4. For Vout 2.0V, no regulations. Note 5. The maximum output current is limited by power dissipation. General Note: Parameter with only typical value is for reference only. 015000869-E-00 -9- 2015/01 [AP1153ADSXX] Table 5. Standard Voltage Version Output Voltage Part Number AP1153ADS18 AP1153ADS21 AP1153ADS28 AP1153ADS30 AP1153ADS33 AP1153ADS50 min typ max V 1.720 2.020 2.720 2.920 3.217 4.875 V 1.800 2.100 2.800 3.000 3.300 5.000 V 1.880 2.180 2.880 3.080 3.383 5.125 Load Regulation Iout = 50mA Iout = 100mA typ max typ max V V mV mV 5 14 11 29 5 14 12 31 6 16 14 37 6 17 15 38 7 18 16 40 9 22 21 55 Table 6. Optional Voltage Version Load Regulation Output Voltage Part Number AP1153ADS13 AP1153ADS14 AP1153ADS15 AP1153ADS16 AP1153ADS17 AP1153ADS19 AP1153ADS20 AP1153ADS22 AP1153ADS23 AP1153ADS24 AP1153ADS25 AP1153ADS26 AP1153ADS27 AP1153ADS29 AP1153ADS31 AP1153ADS32 AP1153ADS34 AP1153ADS35 AP1153ADS36 AP1153ADS37 AP1153ADS38 AP1153ADS39 AP1153ADS40 AP1153ADS41 AP1153ADS42 AP1153ADS43 AP1153ADS44 AP1153ADS45 AP1153ADS46 AP1153ADS47 AP1153ADS48 AP1153ADS49 015000869-E-00 min typ max V 1.220 1.320 1.420 1.520 1.620 1.820 1.920 2.120 2.220 2.320 2.420 2.520 2.620 2.820 3.020 3.120 3.312 3.412 3.510 3.605 3.705 3.805 3.900 3.986 4.085 4.184 4.283 4.382 4.481 4.580 4.679 4.777 V 1.300 1.400 1.500 1.600 1.700 1.900 2.000 2.200 2.300 2.400 2.500 2.600 2.700 2.900 3.100 3.200 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 V 1.380 1.480 1.580 1.680 1.780 1.980 2.080 2.280 2.380 2.480 2.580 2.680 2.780 2.980 3.180 3.280 3.488 3.588 3.690 3.795 3.895 3.995 4.100 4.214 4.315 4.416 4.517 4.618 4.719 4.820 4.921 5.023 - 10 - Iout = 50mA typ max V V 5 12 5 12 5 13 5 13 5 13 5 14 5 14 6 15 6 15 6 15 6 16 6 16 6 16 6 17 7 17 7 17 7 18 7 18 7 19 7 19 7 19 8 19 8 20 8 20 8 20 8 20 8 21 8 21 8 21 8 22 9 22 9 20 Iout = 100mA typ max mV mV 10 25 10 26 10 27 11 28 11 28 11 30 12 31 12 32 13 33 13 34 13 34 14 35 14 36 15 37 15 39 16 40 16 41 16 42 17 43 17 43 17 44 18 45 18 46 18 47 19 48 19 49 19 50 20 50 20 51 20 52 21 54 21 54 2015/01 [AP1153ADSXX] 11. Description 11.1 DC Characteristics Line Regulation Test conditions Vin =VoutTYP+1V Vin Cin 1.0F Vout Vcont Iin (mA) Cout 1.0F Np Vcont 1.8V Iin vs VIN Iout=0mA Iout=5mA Cnp 0.001F Quiescent Current Iout=0mA 2.6 2.4 2.2 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 Vout= 1.5,2.0,3.0,4.0,5.0V 0 2 4 6 8 10 12 14 16 Vin (V) Peak Output Current Vout (V) Load Regulation 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 Vout= 5.0V 4.0V 3.0V 2.0V 1.5V 0 50 100 150 200 250 300 Iout (mA) 015000869-E-00 - 11 - 2015/01 [AP1153ADSXX] Ignd (mA) GND Pin Current Test conditions Vin =VoutTYP+1V 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 Vin Cin 1.0F Vcont Vout 50 Cout 1.0F Np Vcont 1.8V 0 Iout=5mA Cnp 0.001F 100 Iout (mA) Dropout Voltage 2.1V Vouttyp Standby Current (Off state) Vcont=0V 0 1.E-06 -20 1.E-07 Istanby (A) Vdrop (mV) -40 -60 -80 -100 -120 1.E-08 1.E-09 1.E-10 -140 -160 1.E-11 0 50 100 0 Iout (mA) 4 6 8 10 12 14 16 Vin (V) Control Current 015000869-E-00 2 Control Current, ON/OFF Point - 12 - 2015/01 [AP1153ADSXX] Vout vs VIN Regulation Point 2.1V Vouttyp Test conditions Vin =VoutTYP+1V Vin Cin 1.0F Vout Vcont Iout=5mA Cout 1.0F Np Vcont 1.8V 1.54 1.52 1.50 1.48 1.46 1.44 1.42 1.40 1.38 1.36 1.34 Vout vs VIN Regulation Point Vouttyp=2.0V Iout=0,50,100mA Vout (V) Vout (V) Vout vs VIN Regulation Point Vouttyp=1.5V 1.5 1.6 1.7 1.8 Cnp 0.001F 1.9 2.04 2.02 2.00 1.98 1.96 1.94 1.92 1.90 1.88 1.86 1.84 2.0 Iout=0,50,100mA 1.8 1.9 2.0 Vin (V) 2.2 2.3 Vin (V) Reverse Bias Current VIN=0V, Vcont=0V Test conditions Vin=0V Vin Cin 1.0F Vcont Vcont 0V 015000869-E-00 2.1 - 13 - Irev Vout Cout 1.0F Np Vrev Cnp 0.001F 2015/01 [AP1153ADSXX] 11.2 Temperature Characteristics Vout Vouttyp=3.0V Test conditions Vin =VoutTYP+1V 20 Vin Vout Iout=5mA Vout (mV) 10 Cin 1.0F 0 Vcont Cout 1.0F Np -10 -20 Vcont 1.8V 35.15 ppm/ Cnp 0.001F -30 -40 -40 -20 0 20 40 60 80 100 T a Peak Output Current Vout=Vouttyp 0.9 GND Pin Current 250 6.0 200 5.0 Ignd(mA) IoutPEAK(mA) Iout=100mA Iout=50mA Iout=30mA 7.0 150 100 4.0 3.0 2.0 50 1.0 0.0 0 -40 -20 0 20 40 60 -40 -20 80 100 0 40 60 80 100 T a(C) Ta() Dropout Voltage 2.1V Vouttyp Vdrop(mV) 20 Quiescent Current Iout=0mA 300 Iout=100mA Iout=50mA 250 Iout=30mA 200 150 100 50 0 -40 -20 0 20 40 60 80 100 T a(C) 015000869-E-00 - 14 - 2015/01 [AP1153ADSXX] Load Regulation Vouttyp=3.0V Line Regulation VIN = 5V 0 20 15 -10 LinReg(mV) LoaReg(mV) 10 -20 Iout=30mA -30 Iout=50mA -40 Iout=100mA 5 0 -5 -10 -50 -15 -20 -60 -40 -20 0 20 40 60 80 -40 -20 100 0 20 40 60 80 100 60 80 100 T a() T a() ON/OFF Point Vcont(V) Control Current 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 Vout_ON Vout_OFF -40 -20 0 20 40 T a 015000869-E-00 - 15 - 2015/01 [AP1153ADSXX] 11.3 Ripple Rejection Cout=0.22F, 0.47F, 1.0F, 2.2F Test conditions Vripple Vin(DC)=VoutTYP+1.5V 200mVp-p C o u t = 0 . 2 2 F 0.47F 1.0F 2.2F C n p = 0 . 0 0 1 F Ripple Rejection (dB) R.R vs Iout : Frequency=1kHz 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 0 20 40 60 80 f=100Hz 1MHz Vcont Vout Iout=10mA Cout 1.0F Np Vcont 1.8V Cnp 0.001F Iout=10mA, 20mA, 50mA, 100mA I o u t = 1 0 0 m A C n p = 0 . 0 1 F 0 . 1 F R.R vs Low VIN : Ripple Rejection (dB) Cnp=0.00F, 0.01F, 0.1F Vin 100 Iout=100mA Iout=50mA Iout=20mA Iout=10mA Iout=1mA 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 0 Iout (mA) 50mA 20mA Frequency=1kHz 10mA 0.2 0.4 0.6 0.8 1 Vin-Vout(Typ) (V) The ripple rejection (R.R) characteristic depends on the characteristic and the capacitance of the output capacitor. The R.R characteristic at 50kHz or more varies greatly with the capacitor on the output side and PCB pattern. Please check stability during operation. 015000869-E-00 - 16 - 2015/01 [AP1153ADSXX] 11.4 ON/OFF transient Test conditions Vin =VoutTYP+1V Voltage Vcont Cin 1.0F Voutx95% Vcont=0V2V (f=100Hz) Vout Vin Vcont Vout Iout=30mA Cout 1.0F Np Cnp 0.001F Time Cout=0.47F, 1.0F, 2.2F Cout=0.47F, 1.0F, 2.2F Cnp=0.001F, 0.01F, 0.1F Rise time becomes longer if Cout or Cnp becomes larger. Fall time depends on Cout. 015000869-E-00 - 17 - 2015/01 [AP1153ADSXX] 11.5 ON/OFF transient Test conditions Vin =VoutTYP+1V Cin 1.0F Vin Vcont Vcont 1.8V Iout ONOFF Vout Cout 1.0F Np Cnp 0.001F Iout=0100mA, 5105mA Iout=100mA0mA, 105mA5mA Cout=0.47F, 1.0F, 2.2F : Iout=0mA100mA Cout=0.47F, 1.0F, 2.2F : Iout=100mA0mA Increase the load side capacitor when the load change is fast or when there is a large current change. In addition, at no load, supplying small load current to ground can reduce the voltage change. 015000869-E-00 - 18 - 2015/01 [AP1153ADSXX] 11.6 Line transient Cnp=0.001F, 0.01F, 0.1F Test conditions Vin =VoutTYP+1V+2V Vin Vcont Vcont 1.8V Cout=0.1F, 0.22F, 0.47F 015000869-E-00 Vout Iout=30mA Cout 1.0F Np Cnp 0.001F Cout=1.0F, 2.2F - 19 - 2015/01 [AP1153ADSXX] 11.7 Output noise Vout vs Noise Test conditions 80 Vin =VoutTYP+1V Vin Noise (uVrms) 70 60 Cin 1.0F 50 Vout Vcont Iout=30mA Cout 1.0F Np 40 Vcont 1.8V 30 20 10 Cnp 0.01F BPF=400Hz 80kHz 0 1.0 2.0 3.0 4.0 5.0 Vout(Typ) (V) Cnp vs Noise Iout vs Noise Cout=0.22uF 300 Cout=0.47uF Cout=1.0uF Noise (uVrms) Noise (uVrms) 250 200 Cout=2.2uF 150 100 50 0 1p 10p Cout=0.22uF 70 65 60 55 50 45 40 35 30 25 20 Cout=0.47uF Cout=1.0uF Cout=2.2uF 0 100p 1000p 0.01u 0.1u 20 40 60 80 100 Iout (mA) Cnp (F) Increase Cnp to decrease the noise. The recommended Cnp capacitance is 0.01F 0.1F. The amount of noise increases with the higher output voltages. 015000869-E-00 - 20 - 2015/01 [AP1153ADSXX] 11.8 Stability Linear regulators require input and output capacitors in order to maintain the regulator's loop stability. If 0.22F or larger capacitor is connected to the output pin, the IC provides stable operation at any voltage (1.3VVoutTYP5.0V). (The capacitor must be larger than 0.22F at all temperature and voltage range.) If the capacitor with high Equivalent Series Resistance (ESR) is used, such as tantalum capacitor etc., the regulator may oscillate. Please select parts with low ESR. Due to the parts are uneven, please enlarge the capacitance as much as possible. With larger capacity, the output noise decreases more. In addition, the response to the load change, etc. can be improved. The IC won't be damaged by enlarging the capacity. A recommended value of the application is Cin=Cout0.47F Ceramic Capacitance. Vin Vout AP1153ADSXX Cin 0.47 F Cout 0.47 F Cnp 0.001 F GND Figure 2. Recommended value Cout=0.1F Cout=0.22F 100 Unstable area ESR () 10 1 S table area 0.1 Unstable area 0.01 0 20 40 60 80 100 Iout (mA) 1.5V VoutTYP 5.0V Figure 3. Stable operation area, Output current and ESR Figure 3 shows stable operation with a ceramic capacitor of 0.22F. Since it may oscillate if ESR is large, we recommend using ceramic capacitor. The stability of the regulator improves with larger output capacitor (the stable operation area extends.) Please use the capacitor with larger capacitance as possible. For evaluation Kyocera: CM05B104K10AB, CM05B224K10AB, CM105B104K16A, CM105B224K16A, CM21B225K10A Murata: GRM36B104K10, GRM42B104K10, GRM39B104K25, GRM39B224K10, GRM39B105K6.3 015000869-E-00 - 21 - 2015/01 [AP1153ADSXX] The input capacitor is necessary in case the battery voltage drops, the power supply impedance increases, or the distance to the power supply is long. One input capacitor might be necessary for each IC or for several ICs. It depends on circuit condition. Please confirm the stability by each circuit. Figure 4. Example Ceramic Capacitance vs. Bias Voltage, Temperature Generally, a ceramic capacitor has both temperature characteristic and voltage characteristic. Please consider both characteristics when selecting the part. The B curves are the recommend characteristics. 015000869-E-00 - 22 - 2015/01 [AP1153ADSXX] 11.9 Operating Region and Power Dissipation The power dissipation of the device depends on the junction temperature. Therefore, the package dissipation is assumed to be an internal limitation. The package itself does not have enough heat radiation characteristic due to the small size. Heat runs away by mounting IC on PCB. This value changes by the material, copper pattern etc. of PCB. The overheating protection operates when there is a lot of loss inside the regulator (Ambient temperature high, heat radiation bad, etc.). The output current and the output voltage will drop when the protection circuit operates. When joint temperature (Tj) reaches the set temperature, IC stops the operation. However, operation begins at once when joint temperature (Tj) decreases. The thermal resistance when mounted on PCB The chip junction temperature during operation is shown by Tj=JAxPd+Ta. Junction temperature (Tj) is limited around 140C by the thermal protection circuit. Pd is the value when the overheating protection circuit starts operation. When you assume the ambient temperature to be 25C, 140 = JA x Pd(W) + 25 JA x Pd = 115 JA = 115/Pd (C /W) Figure 5. Example PCB layout PCB Material: Two layer glass epoxy substrate (x=30mm,y=30mm,t=1.0mm,Copper pattern thickness 35um) AP1153ADSXX (SOT23-5) Please derate 5.4mW/C at Pd=677mW above 25C. Thermal resistance (JA) is 185C/W. Method of obtaining Pd easily Connect output terminal to GND (short circuited), and measure the input current by increasing the input voltage gradually up to 10V. The input current will reach the maximum output current, but will decrease soon according to the chip temperature rising, and will finally enter the state of thermal equilibrium (natural air cooling). The input current and the input voltage of this state will be used to calculate the Pd. Pd(mW) Vin (V) x Iin (mA) When the device is mounted, mostly achieve: 500mW or more 015000869-E-00 - 23 - 2015/01 [AP1153ADSXX] Procedure (When mounted on PCB). Pd(mW) 1.Find Pd (Vin x Iin when the output is short-circuited). 2. Plot Pd against 25C. 3. Connect Pd to the point corresponding to the 140C with a straight line. 4. Pull a vertical line from the maximum operating temperature in your design (e.g., 75C). 5. Read the value of Pd against the point at which the vertical line intersects the derating curve(DPd). 6.DPd / (Vinmax-Vout) = Iout (at 75C) 2 Pd D Pd 5 3 4 0 0 25 50 75C Ta(C) 100 140C The maximum output current at the highest operating temperature will be Iout DPd / (Vinmax-Vout). Please use the device at low temperature with better radiation. The lower temperature provides better quality. 11.10 ON/OFF Control It is recommended to turn the regulator off when the circuit following the regulator is not operating. A design with small electric power loss can be implemented. Because the control current is small, it is possible to control it directly by CMOS logic. Control Terminal Voltage (Vcont) Vcont > 1.8V Vcont < 0.35V ON/OFF State ON OFF Parallel Connected ON/OFF Control AP1153ADS50 VIN Vout 5V 3.3V AP1153ADS33 R 2.0V AP1153ADS20 On/Off Cont. Figure 6. Parallel Connection Example Figure 6 shows the multiple regulators being controlled by a single ON/OFF control signal. There is fear of overheating, because the power loss of the low voltage side (AP1153ADS20) is large. The series resistor (R) is put in the input line of the low output voltage regulator in order to prevent over-dissipation. 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. 015000869-E-00 - 24 - 2015/01 [AP1153ADSXX] 11.11 Noise Bypass The noise characteristics depend on the capacitance on the Np terminal. A standard value is Cnp=0.001F. Increase Cnp in a design with important output noise requirements. The IC will not be damaged even 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. 11.12 The notes of the evaluation when output terminal is short-circuit to GND By the resonance phenomenon by Cout (C ingredient) and the short circuit line (L ingredient), which are attached to an output terminal, an output terminal changes with minus potential. In order that Parasitism Tr arises within the IC, and a latch rise phenomenon may occur within IC when the worst if it goes into an output terminal's minus side, it results in damage by fire (white smoke) and breakage of a package. (f0 = 1 / 2 (L C)) The above-mentioned resonance phenomenon appears notably in a ceramic capacitor with the small ESR value, etc. A resonance phenomenon can be reduced by connecting resistance (around 2ohms or more) in series with a short circuit line. Thereby, the latch rise phenomenon within IC can be prevented. Generally, when using tantalum or large electrolysis capacitor, the influence of resonance phenomenon can be reduced due to the large ESR (2ohms or more). 015000869-E-00 - 25 - 2015/01 [AP1153ADSXX] 12. Definition of term Relating Characteristic Note Each characteristics will be measured in a short period not to be influenced by joint temperature (Tj). *Output voltage (Vout) The output voltage is specified with Vin= VoutTYP+1V and Iout=5mA *Output current (Iout) Output current, which can be used continuously (It is the range where overheating protection of the IC does not operate.) *Peak maximum output current (IoutPEAK) The rated output current is specified under the condition where the output voltage drops 90% by increasing the output current, compared to the value specified at Vin=VoutTYP+1V. *Dropout voltage (Vdrop) It is an I/O voltage difference when the circuit stops the stable operation by decreasing the input voltage.It is measured when the output voltage drops 100mV from its nominal value by decreasing the input voltage gradually. *Line Regulation (LinReg) It is the fluctuations of the output voltage value when the input voltage is changed. *Load Regulation (LoaReg) It is the fluctuations of the output voltage value when the input voltage is assumed to be VoutTYP +1V, and the load current is changed. *Ripple Rejection (R.R) Ripple rejection is the ability of the regulator to attenuate the ripple content of the input voltage at the output. It is measured with the condition of Vin=Vout+1.5V. Ripple rejection is the ratio of the ripple content between the output vs input and is expressed in dB. *Standby current (Istandby) It is an input current, which flows to the control terminal, when the IC is turned off. Relating Protection Circuit *Over Current Protection It is a function to protect the IC by limiting the output current when excessive current flows to IC, such as the output is connected to GND, etc. *Thermal Protection It protects the IC not to exceed the permissible power consumption of the package in case of large power loss inside the regulator. The output is turned off when temperature of the chip decreases. *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. Generally, a LDO regulator has a diode in the input direction from an output. If an input falls from an output in an input-GND short circuit etc. and this diode turns on, current will flow for an input terminal from an output terminal. In the case of excessive current, IC may break. In order to prevent this, it is necessary to connect a Schottky Diode etc. outside. This product is equipped with reverse bias over-current prevention, and excessive current does not flow in to IC. Therefore, no need to connect diode outside. Vin 015000869-E-00 Vout - 26 - 2015/01 [AP1153ADSXX] 13. Recommended External Circuits External Circuit VIN VIN VOUT Cin=0.1F To load CL=0.22F CL=1.0F VCONT NP GND Vcont Cnp=0.1F Figure 7. External Circuit Test Circuit 5 4 Iin A Vin Vin + Vout Cin CL 1.0F Vcont GND Np 1 2 3 Icont A + Iout Vout V 1.0F Cnp Vcont 0.001F Figure 8. Test Circuit 015000869-E-00 - 27 - 2015/01 [AP1153ADSXX] 14. Package Outline Dimensions Unit: mm Mark Lot No. 5 4 1 1.6 0.1 +0.2 R33 xxx 3 0.4 + 0.1 0.95 0.95 015000869-E-00 +0.10 0.125 0.05 0 ~0.15 1.1 + 0.1 0.2 2.9 + +0.2 2.8 0.3 - 28 - 0.4 + 0.2 2015/01 [AP1153ADSXX] 15. Revise History Date (YY/MM/DD) 15/01/21 015000869-E-00 Revision Page Contents 00 - First edition - 29 - 2015/01 [AP1153ADSXX] IMPORTANT NOTICE 0. Asahi Kasei Microdevices Corporation ("AKM") reserves the right to make changes to the information contained in this document without notice. When you consider any use or application of AKM product stipulated in this document ("Product"), please make inquiries the sales office of AKM or authorized distributors as to current status of the Products. 1. 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