Advanced Power Electronics Corp. APE8970/A 1.5A HIGH OUTPUT CURRENT LDO REGULATOR FEATURES DESCRIPTIOON Input Voltage2.6V to 5.5V Dropout Voltage is 450mV at 1.5A Output Current @ VOUT = 3.30V Guaranteed 1.5A Output Current Low Quiescent Current is 50A (Typ.) Fixed Output Voltage is form 1.2 V to 5V by 0.1V Steps. Fast Transient Response Current Limit and Thermal Shutdown Protection Short Circuit Current Fold-back Available in the 3-Pin Pb-Free SOT-223, TO-263, TO-252, SOT-89 and SO-8 Packages The APE8970/A is a low noise, high output current, low quiescent current and low dropout linear regulator. The Device includes pass element, error amplifier, band-gap, current-limit and thermal shutdown circuitry. The output current is up to 1.5A. The characteristics of low dropout voltage and less quiescent current make it good for some critical current application, for example, some battery powered devices. The typical quiescent current is approximately 50 A. Due to internal flexible design; result in extensively fixed output voltage versions form 1.2V to 5V per 0.1V steps. Built-in current-limit, Short current protection and thermal-shutdown functions prevent any fault condition from IC damage. TYPICAL APPLICATION 1. For SOT-223/TO-252/TO-263/SOT-89 packages APE8970/A VOUT VIN VIN VOUT GND CIN 2.2uF COUT 2.2uF 2. For SO-8 package APE8970 VIN VOUT VIN CIN 2.2uF EN VOUT GND BP COUT 2.2uF 10nF ORDERING INFORMATION APE8970X X-XX Pin Define Package Refer Pin Assignment S : TO-263 H : TO-252 K : SOT-223 M : SO-8 G : SOT-89 Output voltage 12 : 1.2V 13 : 1.3V 50 : 5.0V Data and specifications subject to change without notice 1 201201174 Advanced Power Electronics Corp. APE8970/A PACKAGE INFORMATION ( Top View ) APE8970 Tab is GND SOT-223 SOT-89 2 1 3 VIN GND VOUT ( Top View ) APE8970A APE8970 APE8970A Tab is GND Tab is VOUT Tab is VOUT SOT-223 SOT-89 2 1 3 ( Top View ) ( Top View ) TO-252 TO-252 1 GND VOUT VIN APE8970A Tab is GND Tab is VOUT TOP VIEW TOP VIEW TO-263 2 3 1 2 3 VOUT VOUT GND EN 1 VIN 2 VOUT 3 BP 4 VIN 8 GND APE8970 7 GND 6 GND 5 GND SO-8 TO-263 3 GND VIN 2 GND VIN APE8970 1 ( Top View ) VOUT 1 2 3 VOUT GND VIN ABSOLUTE MAXIMUM RATINGS (at TA=25oC) VIN Pin Voltage (VIN) -------------------------------------- GND - 0.3V to GND + 6.5V OUTPUT Pin Voltage (VOUT) ----------------------------- GND - 0.3V to VIN + 0.3V EN and BP Pin Voltage (VEN/VBP) ---------------------- GND - 0.3V to VIN + 0.3V Power Dissipation (PD) SOT-223------- 1.3W TO-252--------- 2.2W TO-263--------- 4W SO-8------------ 1.4W SOT-89-------- 0.6W Storage Temperature Range (T ST) --------------------- -40 to +150C Operating Temperature Range (T OP) ------------------ -40 to +85C Junction Temperature Range (T J) --------------------- -40 to +125C Thermal Resistance from Junction to Ambient (R thja) SOT-223------- 75C/W TO-252--------- 45C/W TO-263--------- 25C/W SO-8------------ 70C/W SOT-89-------Thermal Resistance from Junction to Case (R thjc) 160C/W SOT-223------- 15oC/W TO-252--------- 10oC/W TO-263--------- 3.5oC/W SO-8------------ 25oC/W SOT-89-------- 100C/W Note1 : RthJA is measured with the PCB copper area of approximately 1 in 2(Multi-layer). That need connect to tap pin. 2 Advanced Power Electronics Corp. APE8970/A ELECTRICAL SPECIFICATIONS (TA=25oC, unless otherwise specified) Parameter SYM VIN Input Voltage TEST CONDITION IOUT=30mA VIN=VOUT+0.1V to 5.5V Output Voltage Accuracy (Note1) VOUT VOUT2.5V, IOUT=1mA MIN TYP MAX UNITS 2.6 - 5.5 V -2 - 2 % VIN=2.6V to 5.5V 2.5VVOUT1.20V, IOUT=1mA -3 - 3 Quiescent Current IQ IOUT =0mA, VIN=5V - 50 80 A Shutdown Current ISD IOUT =0mA, VEN=0V - - 2 A VOUT=1.20V - 1.3 1.7 VOUT=1.50V - 1 1.4 VOUT=1.80V - 0.7 1.1 VOUT=2.50V - 0.55 0.75 Dropout Voltage VDROP IOUT=1.5A VOUT=3.30V Current Limit (Note 2) Short Circuit Current Load Regulation (Note 3) Ripple Rejection Enable Input Threshold (SO-8 only) Enable Pin Current (SO-8 only) ILIMIT ISHORT Output Voltage < 0.25*VOUT IOUT =10m~1.5A VLOAD PSRR CIN=2.2uF, CO=2.2uF, IOUT =10mA V - 0.45 0.65 1.6 2 - A - 600 - mA 2.0VVOUT - 10 20 mV 2.0VVOUT - 0.5 1 % F=120Hz - 65 - F=1KHz - 60 - VENH Regulator Enable 2 - - VENL - - 0.6 IENH Regulator Shutdown VEN=VIN - 0.003 0.1 IENL VEN=0V - 1 1.5 dB V A Temperature Shutdown TS - 150 - C Temperature Shutdown Hysterisis TSH - 30 - C Note1: Minimum VIN voltage is defined by output adds a dropout voltage. Note2: Current limit is measured at constant junction temperature by using pulsed testing with a low ON time. Note3: Regulation is measured at constant junction temperature by using pulsed testing with a low ON time. PIN DESCRIPTIONS PIN SYMBOL EN VOUT PIN DESCRIPTION Active-Low Shutdown Input. A logic low reduces the supply current to less than 2A. Connect to VIN or Floating for normal operation. (SO-8 only) Output Voltage VIN Input Voltage BP Band-gap (SO-8 only) GND Ground 3 Advanced Power Electronics Corp. APE8970/A BLOCK DIAGRAM VIN VOUT Current Limit EN - + Error Amp Enable Bandgap Thermal Shutdown GND BP FUNCTION DESCRIPTIONS A minimum of 2.2 F capacitor must be connected from VOUT to ground to insure stability. Typically a large storage capacitor is connected from VIN to ground to ensure that the input voltage does not sag below the minimum dropout voltage during the load transient response. This pin must always be dropout voltage higher than VOUT in order for the device to regulate properly. APPLICATION INFORMATION Like any low-dropout regulator, the APE8970/A requires input and output decoupling capacitors. The device is specifically designed for portable applications requiring minimum board space and smallest components. These capacitors must be correctly selected for good performance. Please note that linear regulators with a low dropout voltage have high internal loop gains which require care in guarding against oscillation caused by insufficient decoupling capacitance. Capacitor Selection Normally, use a 2.2 F capacitor on the input and a 2.2 F capacitor on the output of the APE8970/A. Larger input capacitor values and lower ESR (X5R, X7R) provide better supply-noise rejection and transient response. A higher- value output capacitor (4.7 F) may be necessary if large, fast transients are anticipated and the device is located several inches from the power source. Input-Output (Dropout) Voltage A regulator's minimum input-to-output voltage differential (dropout voltage) determines the lowest usable supply voltage. In battery-powered systems, this determines the useful end-of-life battery voltage. Because the device uses a PMOS, its dropout voltage is a function of drain-to source on-resistance, R DS(ON), multiplied by the load current: VDROPOUT = VIN -VOUT = RDS(ON) x IOUT 4 Advanced Power Electronics Corp. APE8970/A Current Limit and Short-Circuit Protection The APE8970/A used a current sense-resistor to monitor the output current. A portion of the PMOS output transistor's current is mirrored to a resistor such that the voltage across this resistor is proportional to the output current. Once the output current exceeds limit threshold, APE8970/A would be protected with a limited output current. Further more, when the output is short to ground, the output current would be folded-back to a less limit. Thermal Considerations The APE8970/A series can deliver a current of up to 1.5A over the full operating junction temperature range. However, the maximum output current must be dated at higher ambient temperature to ensure the junction temperature does not exceed 125 C. With all possible conditions, the junction temperature must be within the range specified under operating conditions. Power dissipation can be calculated based on the output current and the voltage drop across regulator. PD = (VIN - VOUT) IOUT The final operating junction temperature for any set of conditions can be estimated by the following thermal equation: PD(MAX) = (TJ(MAX) - TA) / RthJA Where TJ(MAX) is the maximum junction temperature of the die (125 C) and TA is the maximum ambient temperature. The junction to ambient thermal resistance (RthJA) for SOT-223 package at recommended minimum footprint is 75C/W (please refer Maximum rating table) that is connected 1 in2 PCB copper area to tap pin. PCB Layout An input capacitance of ~ 2.2F is required between the APE8970/A input pin and ground (the amount of the capacitance may be increased without limit), this capacitor must be located a distance of not more than 1cm from the input and return to a clean analog ground. Input capacitor can filter out the input voltage spike caused by the surge current due to the inductive effect of the package pin and the printed circuit board's routing wire. Otherwise, the actual voltage at the VIN pin may exceed the absolute maximum rating. The output capacitor also must be located a distance of not more than 1cm from output to a clean analog ground. Because it can filter out the output spike caused by the surge current due to the inductive effect of the package pin and the printed circuit board's routing wire. 5 Advanced Power Electronics Corp. APE8970/A TYPICAL PERFORMANCE CHARACTERISTICS VIN VS. ISD VIN VS.ICCQ 80 1.4 70 1.2 1 ISD (uA) ICCQ (uA) 60 50 40 0.8 0.6 0.4 30 0.2 IOUT =0mA 20 VEN=0V 0 2.6 3 3.5 4 VIN (V) 4.5 5 5.5 2.6 VIN VS. ICL 3 4 VIN (V) 4.5 5 5.5 VIN VS. Threshold Voltage 2 5 3.5 1.8 1.6 4 VENH VENH/VENL (V) 1.4 ICL (A) 3 2 1.2 1 VENL 0.8 0.6 0.4 1 0.2 VOUT =1.2V 0 0 2.6 3 3.5 4 VIN (V) 4.5 5 2.6 5.5 3 3.5 4 VIN (V) 4.5 5 5.5 Load Regulation Temperature VS. ICCQ 100 1.26 90 1.24 80 1.22 60 VOUT (V) ICCQ (uA) 70 50 40 1.18 30 20 10 VIN=5V 0 -40 -20 1.2 1.16 VIN=3.3V 1.14 0 25 50 Temperature 85 105 125 0 0.01 0.1 0.3 0.5 0.8 IOUT (A) 1 1.2 1.5 6 Advanced Power Electronics Corp. APE8970/A TYPICAL PERFORMANCE CHARACTERISTICS Power-ON Dropout Voltage (mV) IOUT VS. Dropout Voltage 1300 1200 1100 1000 900 800 700 600 500 400 300 200 100 0 VOUT =1.2 VOUT =1.5 VOUT =2.5 VOUT=1.8 VOUT =3.3 VOUT=5.0 0.1 0.3 0.5 0.8 IOUT (A) 1 EN-ON (SO-8 Only) 1.2 1.5 Load Transient Thermal Shutdown Release 7 Advanced Power Electronics Corp. APE8970/A MARKING INFORMATION SO-8 Part Number Pin assignment Package Code 8970XM-&& Output Voltage YWWSSS TO-263 Date Code (YWWSSS) Y:Year WWWeek SSSSequence Part Number Pin assignment Package Code 8970XS-&& YWWSSS Output Voltage Date Code (YWWSSS) Y:Year WWWeek SSSSequence Part Number TO-252 Pin assignment Package Code 8970XH-&& YWWSSS Output Voltage Date Code (YWWSSS) Y:Year WWWeek SSSSequence SOT-223 Part Number Pin assignment Package Code 8970XK-&& YWWSSS Output Voltage Date Code (YWWSSS) Y:Year WWWeek SSSSequence 8 Advanced Power Electronics Corp. APE8970/A MARKING INFORMATION SOT-89 Part Number Pin assignment Output Voltage 8970 X X YWWS Date Code (YWWS) Y:Year WWWeek SSequence V OUT Identification Code VOUT Identification Code VOUT 1.2V B 2.5V F 3.8V Identification Code l 1.3V n 2.6V f 3.9V e 1.4V t 2.7V w 4.0V L 1.5V C 2.8V G 4.1V V 1.6V S 2.9V h 4.2V r 1.7V X 3.0V H 4.3V R 1.8V D 3.1V x 4.4V W 1.9V a 3.2V U 4.5V M u 2.0V E 3.3V I 4.6V 2.1V b 3.4V j 4.7V y 2.2V O 3.5V N 4.8V Z 2.3V v 3.6V K 4.9V z 2.4V T 3.7V Y 5.0V J 9