Advanced Power Electronics Corp. APE8902 2A LOW DROPOUT REGULATOR WITH ENABLE FEATURES DESCRIPTION Adjustable Output Low to 0.8V Input Voltage as Low as 1.4V and VPP Voltage 5V 350mV Dropout @ 2A, VO 1.2V Over Current and Over Temperature Protection Enable Pin Low Reverse Leakage (Output to Input ) ±2% Output Voltage VO Power OK Signal 1.2V, 1.5V, 1.8V and 2.5V and Adjustable Output Voltage VO Pull Low Resistance when Disable SOP-8 with Exposed Pad APE8902 is a high performance positive voltage regulator designed for use in applications requiring very low Input voltage and very low dropout voltage at up to 2 amps. It operates with a VIN as low as 1.4V and VPP voltage 5V with output voltage programmable as low as 0.8V. APE8902 features ultra low dropout, ideal for applications where VOUT is very close to VIN. Additionally, the APE8902 has an enable pin to further reduce power dissipation while shutdown. APE8902 provides excellent regulation over variations in line, load and temperature. APE8902 provides a power OK signal to indicate if the voltage level of VO reaches 92% of its rating value. APE8902 is available in the exposed SOP-8(MP) package. It is available with 1.2V, 1.5V, 1.8V and 2.5V internally preset outputs that are also adjustable using external resistors. APPLICATION Motherboards Peripheral Cards Network Cards Set Top Boxes Notebook Computers ORDERING INFORMATION ORDER NUMBER MARKING TEMP. RANGE 8902MP - 40°C ~ + 85°C APE8902MP-12 8902MP-12 - 40°C ~ + 85°C APE8902MP-15 8902MP-15 - 40°C ~ + 85°C APE8902MP-18 8902MP-18 - 40°C ~ + 85°C APE8902MP-25 8902MP-25 - 40°C ~ + 85°C APE8902MP PACKAGE INFORMATION PACKAGE ESOP-8 (with exposed pad) TYPICAL APPLICATION CIRCUIT VPP (5V) VPP ESOP-8 (MP) (Top View) POK VEN VIN VPP 1 2 3 4 8 7 6 5 GND VIN VO VO NC GND ADJ ADJ/NC VO 10KΩ VEN VIN VOUT POK CPP 1uF C1 10uF C2 10uF R1 R2 VO = [ 0.8 x (R1+R2) ] / R2 Volts R2 < 120 K Ω is recommended Data and specifications subject to change without notice 1 200810214 Advanced Power Electronics Corp. APE8902 ABSOLUTE MAXIMUM RATINGS (Note1) VPP, VIN, Input Voltage ------------------------------------ 6.5V Power Dissipation ------------------------------------------ Internally Limited (Note2) Maximum Junction Temperature ----------------------- 150°C Storage Temperature Range ---------------------------- -65°C To 150°C Rthja, Thermal Resistance Junction to Ambient ---- 40°C/W Rthjc, Thermal Resistance Junction to Case -------- 15°C/W ESD Rating (Human Body Model) --------------------- 2KV RECOMMENDED OPERATING CONDITIONS VIN Voltage --------------------------------------------------- 1.4V to 5.5V VPP Voltage -------------------------------------------------- 4.5V to 5.5V VOUT, Output Voltage -------------------------------------- 0.8V to 2.7V TA, Temperature Range ---------------------------------- -40°C To 85°C ELECTRICAL SPECIFICATIONS VPP=5V, VIN=VOUT+500mV, VEN=VPP, IO=10mA, CIN=10uF, TA=TJ=25°C, unless otherwise specefied. (Note3) Parameter SYM TEST CONDITION MIN TYP MAX UNITS VIN Input Voltage Range Quiescent Current 1.4 - 5.5 V - 100 300 uA 4.5 - 5.5 V IO=0mA - 0.23 0.5 mA IO=2A - 5 6 mA IPPL VEN=0V - - 10 uA VO VIN=VO+0.5V, VO=1.8V VIN=(VO+0.5V) to 5V 1.764 1.8 1.836 V - 0.2 1 % - 1 1.5 % - 300 350 - 3 - mV A VEN=0V - 90 - Ω VADJ=VO 0.784 0.8 0.816 V - 20 100 nA VIN IQ IO=0mA VPP VPP Voltage Range VPP Current VPP IPPH VO Output Voltage (Internal Fixed Voltage) Line Regulation Load Regulation Dropout Voltage VD 10mA ≦ IO ≦2A IO=2A Short Circuit Current VO Pull Low Resistance ADJ Reference Voltage Adjust Pin Current VREF IADJ VEN VEN Pin Voltage High VENH 1.6 - - V VEN Pin Voltage Low VENL - - 0.4 V VEN Pin Bias Current IENH - 12 20 uA VO Power OK Voltage VTHPOK - 92 - % Hysteresis VHYPOK - 7 - % POK 2 Advanced Power Electronics Corp. APE8902 ELECTRICAL SPECIFICATIONS(Cont.) Parameter MIN TYP MAX UNITS TOT - 150 - °C TOTHY - 30 - °C SYM TEST CONDITION OVER TEMPERATURE PROTECTION Over Temperature Over Temperature Hysteresis Note1. Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Conditions are conditions under which the device functions but the specifications might not be guaranteed. For guaranteed specifications and test conditions see the Electrical Characteristics. Note2. The maximum power dissipation is a function of the maximum junction temperature, Tjmax; total resistance, Rthja, and ambient temperature T A. The maximum allowable power dissipation at any ambient temperature is (Tjmax -TA) / Rthja. If this dissipation is exceeded, the die temperature will rise above 150°C and IC will go into thermal shutdown. Note3. Low duty pulse techniques are used during test to maintain junction temperature as close to ambient as possible. Note4. Rthja is measured by mounted on a high effective thermal conductivity test board in free air. The bottom exposed pad of ESOP-8 is soldered directly on the PCB. PIN DESCRIPTIONS PIN SYMBOL POK PIN DESCRIPTION Assert high once VO reaches 92% of its rating voltage. Open-drain output. Enable Input. Pulling this pin below 0.4V turns the regulator off, reducing the VEN quiescent current to a fraction of its operating value. The device will be enabled if this pin is left open. VIN Input voltage. Large bulk capacitance should be placed closely to this pin. A 10uF ceramic capacitor is recommended at this pin. VPP Input voltage for controlling circuit. NC Not connected VO The power output of the device. A pull low resistance exists when deactivate device by VEN. This pin, when sets the output voltage bye the internal feedback resistors, is ADJ/NC NC pin. If external feedback resistors are used, the output voltage will be VO = 0.8( R1+R2 ) / R2 Volts. GND Reference ground. 3 Advanced Power Electronics Corp. APE8902 BLOCK DIAGRAM DEFINITIONS Dropout Voltage The input/output Voltage differential at which the regulator output no longer maintains regulation against further reductions in input voltage. Measured when the output drops 2% below its nominal value, dropout voltage is affected by junction temperature, load current and minimum input supply requirements. Line Regulation The change in output voltage for a change in input voltage. The measurement is made under conditions of low dissipation or by using pulse techniques such that average chip temperature is not significantly affected. Load Regulation The change in output voltage for a change in load current at constant chip temperature. The measurement is made under conditions of low dissipation or by using pulse techniques such that average chip temperature is not significantly affected. Maximum Power Dissipation The maximum total device dissipation for which the regulator will operate within specifications. Quiescent Bias Current Current which is used to operate the regulator chip and is not delivered to the load. 4 Advanced Power Electronics Corp. APE8902 POWER SEQUENCE DIAGRAM POWER ON SEQUENCE Vpp Vin EN OUT POWER OFF SEQUENCE EN OUT Vin Vpp 5 Advanced Power Electronics Corp. APE8902 TYPICAL PERFORMANCES CHARACTERISTICS (VCC= 3.3V, TA=25°C, unless otherwise noted.) Quiescent Current vs. Temperature 0.1 0.098 0.098 0.096 0.096 Input Voltage, VIN Quiescent Current, IQ（mA） Quiescent Current vs. Input Voltage 0.1 0.094 0.092 0.09 0.088 0.086 0.094 0.092 0.09 0.088 0.086 0.084 0.084 0.082 0.082 0.08 0.08 3 3.5 4 4.5 5 5.5 -40 -30 -20 -10 0 Input Voltage, VIN (V) IPPH Current vs. Temperature 30 40 50 60 70 80 90 100 IPPH Current vs. Input Voltage 120 125 IPPH Current (mA) IPPH Current (mA) 20 Temperature, (℃) 150 100 75 50 110 100 90 80 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 3 3.5 4 4.5 5 5.5 Input Voltage (V) Temperature ( °C) Output Voltage vs. Load Current Output Voltage vs. Input Voltage 1.22 Output Volrtage (V) 1.22 1.215 Output Voltage 10 1.21 1.205 1.2 1.215 1.21 1.205 1.2 3 3.5 4 4.5 Input Voltage (V) 5 5.5 0 0.25 0.5 0.75 1 1.25 1.5 1.75 2 Load Current (A) 6 Advanced Power Electronics Corp. APE8902 TYPICAL PERFORMANCES CHARACTERISTICS (continued) Output Voltage vs. Temperature Reference Voltage vs. Input Voltage 1.24 Reference Voltage (V) 0.812 Output Voltage (V) 1.23 1.22 1.21 1.2 1.19 0.808 0.804 0.8 0.796 0.792 1.18 0.788 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 3 3.5 4 4.5 5 5.5 Input Voltage (V) Temperature ( °C) Reference Voltage vs. Temperature 0.82 Reference Voltage (V) 0.815 0.81 0.805 0.8 0.795 0.79 0.785 0.78 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 Temperature ( °C) 7 Advanced Power Electronics Corp. APE8902 TYPICAL PERFORMANCES CHARACTERISTICS (continued) Load Transient Vin Start up Waveform Short Circuit Current VEN Start up Waveform 8 Advanced Power Electronics Corp. APE8902 DEMO BOARD FOOTPRINT 9 ADVANCED POWER ELECTRONICS CORP. Package Outline : ESOP-8 P Millimeters MIN NOM MAX A 5.80 6.00 6.20 B 4.80 4.90 5.00 C 3.80 3.90 4.00 D 0° 4° 8° Q SYMBOLS B A2 E 0.40 0.65 0.90 F 0.19 0.22 0.25 M 0.00 0.08 0.15 H 0.35 0.42 0.49 L 1.35 1.55 1.75 J 0.375 REF. K 45° G 1.27 TYP. P 2.15 2.25 2.35 Q 2.15 2.25 2.35 L I J 1.All Dimension Are In Millimeters. 2.Dimension Does Not Include Mold Protrusions. Part Marking Information & Packing : ESOP-8 Part Number Package Code 8902MP-&& YWWSSS Output Voltage Date Code (YWWSSS) Y：Last Digit Of The Year WW：Week SSS：Sequence 10