AME, Inc. AME8753 Low Dropout 500mA / 500mA Dual CMOS LDO Regulator n General Description n Functional Block Diagram The AME8753 dual, low dropout, linear regulators operate from V OUT+VDROPOUT to 5.5V input and deliver up to 500mA / 500mA output current each. Low dropout voltage and low quiescent current(70µA typ.)make them ideal for battery applications. The AME8753 is available with a wide variety of voltage options as standard and can be trimmed to 2% accuracy. For protection purpose, AME8753 has both thermal shutdown and current fold-back to prevent device failure under the "Worst" operating conditions. Current Limit Error Amp1 VOUT1 R11 R12 VIN GND Current Limit Error Amp2 VOUT2 R21 Voltage Reference n Features n Typical Applications l Very Low Dropout Voltage l Guaranteed 500mA / 500mA Each Output l Accurate to within 2% for both outputs R22 Fixed Version VIN IN AME8753A l Typical 70 µA Quiescent Current VOUT1 OUT1 VOUT2 OUT2 l Over-Temperature Shutdown GND l Current Limiting l Short Circuit Current Fold-back 1µF 1µF 1µF l All AME’s Lead Free Products Meet RoHS Standards n Applications l Cellular Phones l Palm / Notebook l Battery Power Equipment l Handheld Instruments Rev.A.02 1 AME, Inc. Low Dropout 500mA / 500mA Dual CMOS LDO Regulator AME8753 n Pin Configuration SOP-8/PP Top View 8 7 6 AME 8753AEZA 5 1. IN 2. GND 3. GND AME8753 4. OUT1 5. OUT2 6. GND 1 2 3 4 7. GND 8. GND * Die Attach: Conductive Epoxy Note: The area enclosed by dashed line represents Exposed Pad and connection to GND. n Pin Description 2 Pin Number Pin Name 1 IN 2 GND 3 GND 4 OUT1 5 OUT2 6 GND 7 GND 8 GND Description Regulator Input. Supply voltage can range from Higher VOUT+VDROPOUT to 5.5V. This input also supplies the on-chip reference. Bypass with 1µF capacitor to GND. Ground. This pin also functions as heatsink. Solder to a large pad or the circuitboard ground plane to maximize thermal dissipation. Ground. This pin also functions as heatsink. Solder to a large pad or the circuitboard ground plane to maximize thermal dissipation. Regulator 1 Output. Sources up to 500mA continuous current. Bypass with a 1µF (< 0.5Ω typ ESR) capacitor to GND. Regulator 2 Output. Sources up to 500mA continuous current. Bypass with a 1µF (< 0.5Ω typ ESR) capacitor to GND. Ground. This pin also functions as heatsink. Solder to a large pad or the circuitboard ground plane to maximize thermal dissipation. Ground. This pin also functions as heatsink. Solder to a large pad or the circuitboard ground plane to maximize thermal dissipation. Ground. This pin also functions as heatsink. Solder to a large pad or the circuitboard ground plane to maximize thermal dissipation. Rev.A.02 AME, Inc. Low Dropout 500mA / 500mA Dual CMOS LDO Regulator AME8753 n Ordering Information AME8753 x x x x xxxx x Special Feature Output Voltage Number of Pins Package Type Operating Ambient Temperature Range Pin Configuration Pin Configuration A (SOP-8/PP) 1. IN 2. GND 3. GND 4. OUT1 5. OUT2 6. GND 7. GND 8. GND Operating Ambient Temperature Range E: -40OC to 85OC Package Type Z: SOP/PP Number of Pins A: 8 Output Voltage (Both LDOs) 2533: VOUT1=2.5V Special Feature Z: Lead free VOUT2=3.3V n Ordering Information Part Number Marking* AME8753AEZA2533Z AME8753 AEZA2533 yyww Output Voltage VOUT1=2.5V VOUT2=3.3V Package Operating Ambient Temperature Range SOP-8/PP - 40oC to 85oC Note:yyww represents date code . * a line on top of the first letter represents lead free plating such as AME8753. Please consult AME sales office or authorized Rep./Distributor for voltage accuracy and package type availability. Rev.A.02 3 AME, Inc. Low Dropout 500mA / 500mA Dual CMOS LDO Regulator AME8753 n Absolute Maximum Ratings Parameter Maximum Unit -0.3 to 6 V Output Voltage -0.3 to VIN + 0.3 V Output Current PD / [2V IN -(V OUT1+VOUT2)] mA Input Voltage C* ESD Classification Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device * HBM C:4000V+ n Recommended Operating Conditions Parameter Symbol Rating Unit Ambient Temperature Range TA -40 to 85 o C Junction Temperature Range TJ -40 to 125 o C Storage Temperature Range TSTG -65 to 150 o C n Thermal Information Parameter Package Die Attach Thermal Resistance * (Junction to Case) Symbol Maximum θJC 19 Unit o C/W Thermal Resistance (Junction to Ambient) SOP-8/PP Conductive Epoxy Internal Power Dissipation θJA 84 PD 1450 mW Maximum Junction Temperature 150 o C Solder Iron (10 Sec)** 350 o C * Measure θJC on center of molding compound if IC has no tab. ** MIL-STD-202G 210F 4 Rev.A.02 AME, Inc. Low Dropout 500mA / 500mA Dual CMOS LDO Regulator AME8753 n Electrical Specifications Unless specified: TJ=25OC, VIN=Higher VOUT+1V, IOUT1=IOUT2=1mA, CIN=COUT=1µF. Typical values are at TJ=25OC Parameter Symbol Test Condition Min Typ Max Units 5.5 V 160 µA IN Input Supply Voltage VIN Quiescent Current Note1 IQ 70 OUT1, OUT2 -2% IOUT=1mA Output Voltage VOUT 0mA<IOUT<=500mA, VOUT+1V<VIN<5.5V Line Regulation REGLINE Load Regulation REGLOAD Dropout Voltage VDROP 2% TJ=-40oC to +125oC -2.5% TJ=25oC 2.5% V -0.2 0.2 IOUT=1mA TJ=-40 C to +125 C -0.25 0.25 1mA<IOUT TJ=-40oC to +125oC -0.005 +0.0025 0.005 %/mA VOUT+1V<VIN<5.5V o o %/V IOUT1=IOUT2=500mA (VO=VO(NOM)-2%), TJ=-40oC to +125oC 800 mV VO(NOM)>=2.5V Current Limit ILIM Short Circuit Current ISC Ripple Rejection Output Voltage Noise PSRR en 700 1400 350 f=100HZ, IOUT=1mA 55 f=1kHZ, IOUT=1mA 55 f=10kHZ, IOUT=1mA 48 f=1kHz to 100kHz, COUT=1µF 550 500 mA dB µVRMS Over Temperature Protection Over Temperature Shutdown Over Temperature Hysteresis OTS OTH 150 o 20 o C C Note1: VIN(min)=HigherVOUT+ VDropout Rev.A.02 5 AME, Inc. AME8753 Low Dropout 500mA / 500mA Dual CMOS LDO Regulator n Detailed Description The AME8753 is low-dropout, low quiescent-current linear regulator designed primarily for battery-powered applications. These parts are available with preset output voltage ranging from 2.5V to 3.3V, and the parts can supply loads up to 500mA. Internal P-Channel Pass Transistor The AME8753 features two 1Ω P-Channel MOSFET pass transistors. A P-Channel MOSEFT provides several advantages over similar designs using PNP pass transistors, including longer battery life. It requires no base drive, which reduces quiescent current significantly. The AME8753 only consume 70µA of quiescent current whether in dropout, lightload, or heavy-load applications. n Application Information Capacitor Selection and Regulator Stability Use a 1µF capacitor on the AME8753 input and a 1µF capacitor on the outputs. Larger input capacitor values and lower ESRs provide better supply noise rejection and line transient response. PSRR and Operation from Sources Other than Batteries The AME8753 is designed to deliver low dopout voltages and low quiescent currents in battery powered systems. Power-supply rejection is 50dB at low frequencies. Current Limit The AME8753 contains two independent current limiters, one for each regulator, which monitor and control the pass transistor’s gate voltage, limiting output current to 700mA minimum. The output can be shorted to ground for an indefinite time without damaging the part. Thermal-Overload Protection Thermal -overload protection limits total power dissipation in the AME8753. When the junction trmperature exceeds T J=150oC, the themal sensor signals the shutdown logic, turning off the pass transistor and allowing the IC to cool. 6 Rev.A.02 AME, Inc. Low Dropout 500mA / 500mA Dual CMOS LDO Regulator AME8753 Channel-to-Channel Isolation (dB) Quiescent Current vs Input Voltage 140 Quiescent Current (µA) 120 O 85 C 100 O 55 C O 80 25 C 60 -5 C O O -45 C 40 20 Channel-to-Channel Isolation (dB) 100 O 125 C 10 0 VIN=5V RLOAD=50Ω 1 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 0.01 6 Quiescent Current vs Temperature 1 10 100 Output Noise Spectral Density 110 10 IOUT=1,50,100,150mA 100 Noise(µV/√Hz) Quiescent Current @ 5V (µA) 0.1 Frequency (KHz) Input Voltage (V) 90 80 70 1 60 50 -50 0.1 0 50 100 1 10 Temperature (oC) Frequency(kHz) Dropout Voltage vs Load Current Line Transient 100 900 85℃ VIN 125℃ 3.5V 4.5V 1V/DIV 700 600 500 25℃ 400 -5℃ 300 20mV/DIV (AC-Coupled) -45℃ 200 100 Vout Dropout Voltage (mV) 55℃ VOUT=3.3V 800 Vout=3.3V 0 0 100 200 300 Load Current (mA) Rev.A.02 400 500 50µs/DIV 7 AME, Inc. Low Dropout 500mA / 500mA Dual CMOS LDO Regulator AME8753 Output Voltage vs Temperature 900 3.31 800 VOUT=3.3V 3.30 700 Output Voltage (V) 600 500 400 300 200 3.29 3.28 3.27 3.26 100 0 1.5 2 2.5 3 3.25 -50 3.5 Output Voltage (V) 0 120 60 100 50 Both Output Loaded 60 40 40 30 20 VIN=4.3V VOUT =3.3V ILOAD=50mA 10 20 0 0 100 200 300 400 10 500 100 1000 10000 100000 Load Current (mA) Frequency (Hz) Load Transient Load Transient Near Dropout VIN=4.3V ILOAD= 0 to 500mA 500mA/div VOUT 20mV/div (AC-COUPLED) 0 ILOAD 100µs/div 1000000 VIN=VOUT+0.7V ILOAD=0 to 500mA 20mV/div (AC-COUPLED) 80 PSRR (dB) Supply Current (µA) 100 PSRR vs Frequency Supply Current vs Load Current 8 50 Temperature (oC) VOUT 500mA/div Dropout Voltage @ 500mA (mV) Dropout Voltage vs Output Voltage ILOAD 0 0 100µs/div Rev.A.02 AME, Inc. Low Dropout 500mA / 500mA Dual CMOS LDO Regulator AME8753 n Tape and Reel Dimension SOP-8/PP P PIN 1 W AME AME Carrier Tape, Number of Components Per Reel and Reel Size Rev.A.02 Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size SOP-8/PP 12.0±0.1 mm 4.0±0.1 mm 2500pcs 330±1 mm 9 AME, Inc. Low Dropout 500mA / 500mA Dual CMOS LDO Regulator AME8753 n Package Dimension SOP-8/PP Top View Side View SYMBOLS E１ D L1 θ e A1 A A2 Front View INCHES MIN MAX MIN MAX A - 1.700 - 0.067 A1 0.050 0.150 0.002 0.006 A2 1.350 1.550 0.053 0.061 C 0.100 0.250 0.004 0.010 E 3.750 4.150 0.148 0.163 E1 5.700 6.300 0.224 0.248 L 0.300 0.700 0.012 0.028 b 0.310 0.510 0.012 0.020 D 4.720 5.120 0.186 0.202 C E MILLIMETERS e θ 1.270 BSC 0 o 8 0.05 BSC o 0o 8o b 10 Rev.A.02 www.ame.com.tw E-Mail: [email protected] Life Support Policy: These products of AME, Inc. are not authorized for use as critical components in life-support devices or systems, without the express written approval of the president of AME, Inc. AME, Inc. reserves the right to make changes in the circuitry and specifications of its devices and advises its customers to obtain the latest version of relevant information. AME, Inc. , February 2007 Document: 2075-DS8753-A.02 Corporate Headquarter U.S.A. (Subsidiary) AME, Inc. Analog Microelectronics, Inc. 2F, 302 Rui-Guang Road, Nei-Hu District Taipei 114, Taiwan. 3100 De La Cruz Blvd., Suite 201 Tel: 886 2 2627-8687 Fax: 886 2 2659-2989 Santa Clara, CA. 95054-2438 Tel : (408) 988-2388 Fax: (408) 988-2489