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| AME, Inc. AME8753 n General Description 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(70A 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. Low Dropout 500mA / 500mA Dual CMOS LDO Regulator n Functional Block Diagram Error Amp1 Current Limit VOUT1 R11 R12 VIN GND Error Amp2 Current Limit VOUT2 R21 Voltage Reference R22 n Features l Very Low Dropout Voltage l Guaranteed 500mA / 500mA Each Output l Accurate to within 2% for both outputs l Typical 70 A Quiescent Current l Over-Temperature Shutdown l Current Limiting l Short Circuit Current Fold-back l All AME's Lead Free Products Meet RoHS Standards n Typical Applications Fixed Version VIN IN OUT1 VOUT1 VOUT2 AME8753A OUT2 GND 1F 1F 1F n Applications l Cellular Phones l Palm / Notebook l Battery Power Equipment l Handheld Instruments Rev.A.02 1 AME, Inc. AME8753 n Pin Configuration SOP-8/PP Top View 8 7 6 5 Low Dropout 500mA / 500mA Dual CMOS LDO Regulator AME 8753AEZA 1. IN 2. GND AME8753 3. GND 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 Pin Number 1 Pin Name IN Description Regulator Input. Supply voltage can range from Higher VOUT+VDROPOUT to 5.5V. This input also supplies the on-chip reference. Bypass with 1F 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 1F (< 0.5 typ ESR) capacitor to GND. Regulator 2 Output. Sources up to 500mA continuous current. Bypass with a 1F (< 0.5 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 2 GND 3 GND 4 OUT1 5 OUT2 6 GND 7 GND 8 2 GND AME, Inc. 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 Operating Ambient Temperature Range E: -40OC to 85OC Number of Pins A: 8 Output Voltage (Both LDOs) 2533: VOUT1=2.5V VOUT2=3.3V Low Dropout 500mA / 500mA Dual CMOS LDO Regulator Pin Configuration A (SOP-8/PP) Package Type Z: SOP/PP Special Feature 1. IN 2. GND 3. GND 4. OUT1 5. OUT2 6. GND 7. GND 8. GND Z: Lead free n Ordering Information Part Number AME8753AEZA2533Z Marking* AME8753 AEZA2533 yyww Output Voltage VOUT1=2.5V VOUT2=3.3V Package SOP-8/PP Operating Ambient Temperature Range - 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. AME8753 Low Dropout 500mA / 500mA Dual CMOS LDO Regulator n Absolute Maximum Ratings Parameter Input Voltage Output Voltage Output Current ESD Classification Maximum -0.3 to 6 -0.3 to VIN + 0.3 PD / [2V IN -(V OUT1+VOUT2)] C* Unit V V mA Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device * HBM C:4000V+ n Recommended Operating Conditions Parameter Ambient Temperature Range Junction Temperature Range Storage Temperature Range Symbol TA TJ TSTG Rating -40 to 85 -40 to 125 -65 to 150 Unit o C C C o o n Thermal Information Parameter Thermal Resistance * (Junction to Case) Thermal Resistance (Junction to Ambient) Internal Power Dissipation Maximum Junction Temperature Solder Iron (10 Sec)** SOP-8/PP Conductive Epoxy Package Die Attach Symbol JC JA PD Maximum 19 Unit o C/W 84 1450 150 350 mW o C C o * Measure JC on center of molding compound if IC has no tab. ** MIL-STD-202G 210F 4 Rev.A.02 AME, Inc. AME8753 n Electrical Specifications Unless specified: TJ=25OC, VIN=Higher VOUT+1V, IOUT1=IOUT2=1mA, CIN=COUT=1F. Typical values are at TJ=25OC Parameter IN Input Supply Voltage Quiescent Current OUT1, OUT2 IOUT=1mA Output Voltage VOUT 0mA Low Dropout 500mA / 500mA Dual CMOS LDO Regulator Symbol VIN IQ Test Condition Min Note1 Typ Max 5.5 Units V A 70 -2% 160 2% 2.5% 0.2 0.25 TJ=-40oC to +125oC -2.5% TJ=25oC o o V -0.2 TJ=-40 C to +125 C -0.25 %/V TJ=-40oC to +125oC -0.005 +0.0025 0.005 %/mA (VO=VO(NOM)-2%), VO(NOM)>=2.5V TJ=-40oC to +125oC 700 350 55 55 48 550 800 1400 500 mV mA dB en f=1kHz to 100kHz, COUT=1F VRMS C C Note1: VIN(min)=HigherVOUT+ VDropout Rev.A.02 5 AME, Inc. AME8753 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. Low Dropout 500mA / 500mA Dual CMOS LDO Regulator n Application Information Capacitor Selection and Regulator Stability Use a 1F capacitor on the AME8753 input and a 1F capacitor on the outputs. Larger input capacitor values and lower ESRs provide better supply noise rejection and line transient response. Internal P-Channel Pass Transistor The AME8753 features two 1 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 70A of quiescent current whether in dropout, lightload, or heavy-load applications. 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. AME8753 140 Low Dropout 500mA / 500mA Dual CMOS LDO Regulator Channel-to-Channel Isolation (dB) 125 C O O Quiescent Current vs Input Voltage Channel-to-Channel Isolation (dB) 100 Quiescent Current (A) 120 100 85 C O 55 C 80 60 40 20 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 O 25 C O 10 -5 C O -45 C VIN=5V RLOAD=50 1 0.01 0.1 1 10 100 Input Voltage (V) Frequency (KHz) Quiescent Current vs Temperature 110 10 Output Noise Spectral Density Quiescent Current @ 5V (A) 100 IOUT=1,50,100,150mA 90 80 Noise(V/OHz) 0 50 100 1 70 60 50 -50 0.1 1 10 100 Temperature (oC) Frequency(kHz) Dropout Voltage vs Load Current 900 800 Line Transient VOUT=3.3V 55J 85J 3.5V 4.5V 1V/DIV Dropout Voltage (mV) 700 600 500 400 25J -5J -45J 300 200 100 0 0 100 200 VIN 125J Vout=3.3V 300 400 500 Load Current (mA) 50s/DIV Rev.A.02 20mV/DIV (AC-Coupled) Vout 7 AME, Inc. AME8753 900 800 3.30 Low Dropout 500mA / 500mA Dual CMOS LDO Regulator Output Voltage vs Temperature 3.31 Dropout Voltage vs Output Voltage Dropout Voltage @ 500mA (mV) VOUT=3.3V 600 500 400 300 200 100 0 1.5 2 2.5 3 3.5 Output Voltage (V) 700 3.29 3.28 3.27 3.26 Output Voltage (V) 3.25 -50 0 50 100 Temperature (oC) Supply Current vs Load Current 120 60 PSRR vs Frequency Supply Current (A) 100 50 Both Output Loaded PSRR (dB) 80 40 60 30 40 20 20 10 VIN=4.3V VOUT =3.3V ILOAD=50mA 10 100 1000 10000 100000 1000000 0 0 100 200 300 400 500 0 Load Current (mA) Frequency (Hz) Load Transient 20mV/div (AC-COUPLED) VIN=4.3V ILOAD= 0 to 500mA VOUT Load Transient Near Dropout VIN=VOUT+0.7V ILOAD=0 to 500mA VOUT 500mA/div ILOAD ILOAD 0 100s/div 0 100s/div 8 Rev.A.02 500mA/div 20mV/div (AC-COUPLED) AME, Inc. AME8753 Low Dropout 500mA / 500mA Dual CMOS LDO Regulator n Tape and Reel Dimension SOP-8/PP P PIN 1 W AME AME Carrier Tape, Number of Components Per Reel and Reel Size Package SOP-8/PP Carrier Width (W) 12.00.1 mm Pitch (P) 4.00.1 mm Part Per Full Reel 2500pcs Reel Size 3301 mm Rev.A.02 9 AME, Inc. AME8753 n Package Dimension SOP-8/PP Top View Side View C Low Dropout 500mA / 500mA Dual CMOS LDO Regulator SYMBOLS A MILLIMETERS MIN 0.050 1.350 0.100 3.750 5.700 0.300 0.310 4.720 INCHES MIN 0.002 0.053 0.004 0.148 0.224 0.012 0.012 0.186 MAX 1.700 0.150 1.550 0.250 4.150 6.300 0.700 0.510 5.120 MAX 0.067 0.006 0.061 0.010 0.163 0.248 0.028 0.020 0.202 E E A1 A2 C E L1 D c Front View E1 L b D A2 e 1.270 BSC 0 o 0.05 BSC o A b A1 e 8 0o 8o 10 Rev.A.02 www.ame.com.tw E-Mail: sales@ame.com.tw 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. (c) AME, Inc. , February 2007 Document: 2075-DS8753-A.02 Corporate Headquarter AME, Inc. 2F, 302 Rui-Guang Road, Nei-Hu District Taipei 114, Taiwan. Tel: 886 2 2627-8687 Fax: 886 2 2659-2989 U.S.A. (Subsidiary) Analog Microelectronics, Inc. 3100 De La Cruz Blvd., Suite 201 Santa Clara, CA. 95054-2438 Tel : (408) 988-2388 Fax: (408) 988-2489 |
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