AME, Inc. AME8750 Low-Dropout 150mA / 150mA Dual CMOS Regulator n General Description The AME8750 dual, low dropout, linear regulators operate from Higher V OUT+VDROPOUT to 5.5V input and deliver up to 150mA / 150mA output current each. It has a bypass pin option allows users to decouple the bandgap reference for reducing the output noise. Low dropout voltage and low quiescent current(70µA typ.)make them ideal for battery applications. n Functional Block Diagram ON/OFF Control EN1 Current Limit Error Amp1 VOUT1 VR1 Each Circuit R11 R12 VI N The AME8750 is available with a wide variety of voltage options as standard and can be trimmed to 1.5% accuracy. For protection purpose, AME8750 has both thermal shutdown and current fold-back to prevent device failure under the “ worst” of operating conditions. n Features GND Error Amp2 V OUT2 VR2 Each Circuit ON/OFF Control EN2 R21 Voltage Reference R22 n Typical Applications l Very Low Dropout Voltage Fixed Version l Guaranteed 150mA / 150mA Each Output l Accurate to Within 1.5% For Both Outputs Current Limit VIN VIN VOUT1 V OUT1 EN l Typical 70 µA Quiescent Current AME8750A VOUT2 l Over-Temperature Shutdown BYP V OUT2 GND l Current Limiting l Short Circuit Current Fold-back 1µF l Noise Reduction Bypass Cap 1µF 10nF 1µF l Power-Saving Shutdwon Mode l All AME's Lead Free Product Meet RoHS Standards n Applications VIN VIN V OUT1 VOUT1 EN1 l Cellular Phones AME8750B l Palm / Notebook EN2 V OUT2 VOUT2 GND l Battery Power Equipment l Handheld Instruments 1µF 1µF 1µF 1 AME, Inc. Low-Dropout 150mA / 150mA Dual CMOS Regulator AME8750 n Pin Configuration SOT-26 Top View 6 5 SOT-26 Top View 4 AME8750 1 2 AME 8750AEEY 5 4 AME 8750BEEY 1. VOUT2 1. VOUT2 2. GND 2. GND 3. BYP 3 6 AME8750 3. EN1 4. EN 4. EN2 5. VIN 5. VIN 6. VOUT1 1 * Die Attach: Conductive Epoxy 2 3 6. VOUT1 * Die Attach: Conductive Epoxy n Pin Description Pin Number 2 Pin Name Description AME8750A AME8750B 1 1 VOUT2 2 2 GND 3 N/A BYP Reference Noise Bypass. Bypass with a low leakage 10nF ceramic capacitor for reduced nise at both outputs. Regulator 2 Output. Sources up to 150mA 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 circuit-board ground plane to maximize thermal dissipation. N/A 3 EN1 Shutdown 1 Input. A logic low shuts down regulator 1. If EN1 and EN2 are both low, both regulators and the reference turn off. If either EN1 and EN2 is a logic high, the reference is on. Connect to VIN for normal operation. 4 N/A EN Shutdown Input. A logic low shuts down both regulators. Connect to VIN for normal operation. N/A 4 EN2 5 5 VIN 6 6 VOUT1 Shutdown 2 Input. A logic low shuts down regulator 2. If EN1 and EN2 are both low, both regulators and the reference turn off. If either EN1 and EN2 is a logic high, the reference is on. Connect to VIN for normal operation. Regulator Input. Supply voltage can range from Higher VOUT+VDROPOUT to 5.5V. This input also supplies the onchip reference. Bypass with 1µF to GND. Regulator 1 Output. Sources up to 150mA continuous current. Bypass with a 1µF (< 0.5Ω typ ESR) capacitor to GND. AME, Inc. Low-Dropout 150mA / 150mA Dual CMOS Regulator AME8750 n Ordering Information (contd.) AME8750 x x x x xxxx x Special Feature Output Voltage Number of Pins Package Type Operating Ambient Temperature Range Pin Configuration Pin Configuration A (SOT-26) B (SOT-26) 1. VOUT2 2. GND 3. BYP 4. EN 5. VIN 6. VOUT1 Operating Ambient Temperature Range E: -40OC to +85OC Package Type E: SOT-2X Number of Pins Y: 6 Output Voltage (Both LDOs) Special Feature 1825: VOUT1=1.8V Y: Lead free & Low profile VOUT2=2.5V Z: Lead free 1828: VOUT1=1.8V VOUT2=2.8V 1. VOUT2 2. GND 3. EN2 4. EN1 5. VIN 6. VOUT1 3 AME, Inc. Low-Dropout 150mA / 150mA Dual CMOS Regulator AME8750 n Ordering Information Part Number Marking* AME8750AEEY1828Z BCKww AME8750AEEY1828Y BCKww AME8750BEEY1828Z BCJww AME8750BEEY1828Y BCJww AME8750BEEY1825Z BBHww AME8750BEEY1825Y BBHww Output Voltage Package VOUT1=1.8V VOUT2=2.8V VOUT1=1.8V VOUT2=2.8V VOUT1=1.8V VOUT2=2.8V VOUT1=1.8V VOUT2=2.8V VOUT1=1.8V VOUT2=2.5V VOUT1=1.8V VOUT2=2.5V Operating Ambient Temperature Range SOT-26 - 40oC to + 85oC TSOT-26 - 40oC to + 85oC SOT-26 - 40oC to + 85oC TSOT-26 - 40oC to + 85oC SOT-26 - 40oC to + 85oC TSOT-26 - 40oC to + 85oC Note:ww represents date code and pls refer to Date Code Rule before Package Dimension. * A line on top of the first letter represents lead free plating such as BCKww. Please consult AME sales office or authorized Rep./Distributor for voltage accuracy and package type availability. 4 AME, Inc. Low-Dropout 150mA / 150mA Dual CMOS Regulator AME8750 n Absolute Maximum Ratings Parameter Maximum Unit 6 V Output Current PD /2V IN-(V OUT1+V OUT2) mA Output Voltage GND-0.3 to VIN +0.3 V Input Voltage ESD Classification B* Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device. * HBM B: 2000V~3999V n Recommended Operating Conditions Parameter Symbol Rating Unit Ambient Temperature Range TA -40 to +85 o Junction Temperature Range TJ -40 to +125 o C C n Thermal Information Parameter Package Die Attach Thermal Resistance* (Junction to Case) Symbol Maximum θJC 81 Unit o C/W Thermal Resistance (Junction to Ambient) SOT-26 Conductive Epoxy Internal Power Dissipation θJA 260 PD 400 mW Maximum Junction Temperature 150 o Solder Iron (10 Sec)** 350 o C C * Measure θJC on center of molding compound if IC has no tab. ** MIL-STD-202G 210F 5 AME, Inc. Low-Dropout 150mA / 150mA Dual CMOS Regulator AME8750 n Electrical Specifications Unless specified: TJ=25OC, VIN=Higher VOUT+1V, IOUT1=IOUT2=1mA, CIN=COUT=1.0µF, VEN1=VEN2=VIN Typical values are at TJ=25OC Parameter Symbol Test Condition Min Typ Max Units 5.5 V 160 µA IN Input Supply Voltage V IN Quiescent Current Note1 IQ 70 OUT1, OUT2 IOUT=1mA Output Voltage VO 0mA<IOUT<=150mA V OUT+1V<V IN <5.5V Line Regulation REGL I N E Load Regulation REGLOAD -1.5 TJ =-40 oC to +125oC -2 TJ =25oC -0.2 V OUT+1V<V IN <5.5V, o 1.5 V OUT 2 0.2 o IOUT=1mA TJ =-40 C to +125 C -0.25 1mA<I OUT TJ =-40 oC to +125oC -0.005 +0.0025 0.005 0.25 % %/V %/mA IOUT1=IOUT2 =150mA (V O=V O(NOM)-2%), Dropout Voltage V DROP VO(NOM) <2.5V IOUT1=IOUT2 =150mA 350 mV 300 mV TJ =-40 oC to +125oC (V O=V O(NOM)-2%), V O(NOM)>=2.5V Current Limit ILIM Short Circuit Current ISC Ripple Rejection PSRR Output Voltage Noise en 180 600 200 350 mA f=100H Z , C BYP=10nF, IOUT=1mA 55 f=1kHZ , C BYP=10nF, IOUT=1mA 55 f=10kHZ , C BYP=10nF, IOUT=1mA 48 f=1kHz to 100kHz CB Y P=10nF, C OUT=1µF 550 µV RMS f=1kHz to 100kHz CB Y P=10nF, C OUT=1µF 5.5 µV/ √ HZ dB EN1, EN2 Enable Input Threshold EN Input Bias Current Shutdown Current V EH V IN=2.4V to 5.5V VEL V IN=2.4V to 5.5V IEL IEH ISHDN TJ =-40 oC to +125oC EN=0V V IN =5.0V 2.4 V 0.4 0.5 1 V IN =5.0V, EN1=EN2=0V 0.3 1 CB Y P=10nF 1.25 ms EN=5V -1 V µA BYP Start-Up Rise Time Over Temperature Protection Over Temperature Shutdown OTS 150 o C Over Temperature Hysteresis OTH 20 o C Note1: VIN(min) =Higher VOUT+ V Dropout 6 AME, Inc. AME8750 Low-Dropout 150mA / 150mA Dual CMOS Regulator n Detailed Description The AME8750 is low-dropout, low quiescent-current linear regulatior designed primarily for battery-powered applications. These parts are available with preset output voltage ranging from 1.8V to 3.3V, and the parts can supply loads up 150mA. Shutdown AME8750A The AME8750A has a single shutdown control input(EN). Drive EN low to shut down both outputs, reducing supply current to 0.3µA. Connect EN to a logic-high, or IN, for normal operation. AME8750B n Application Information Capacitor Selection and Regulator Stability Use a 1µF capacitor on the AME8750A/ AME8750B input and a 1µF capacitor on the outputs. Larger input capacitor values and lower ESRs provide better supplynoise rejection and line transient response. PSRR and Operation from Sources Other than Batteries The AME8750A/AME8750B are designed to deliver low dopout voltages and low quiescent currents in batterypowered systems. Power-supply rejection is 54dB at low frequencies. (See the PSRR vs. Frequency graph) The AME8750B has independent shutdown control inputs (EN1 and EN2). Drive EN1 low to shutdown V OUT1. Drive EN2 low to shut down V OUT2. Drive both EN1 and EN2 low to shut down the entire chip, reducing supply current to 0.3mA. Connect both EN1 and EN2 to a logic-high, or IN, for normal operation. Internal P-Channel Pass Transistor The AME8750A/AME8750B feature 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 AME8750A/AME8750B only consume 70µA of quiescent current whether in dropout, light-load, or heavy-load applications. Current Limit The AME8750A/8750B contain two independent current limiters, one for each regulator, which monitor and control the pass transistor’ s gate voltage, limiting the guaranteed maximum output current to 150mA minimum. The output can be shorted to ground for an indefinite time without damaging the part. Thermal-Overload Protection Thermal -overload protection limits toatl power dissipation in the AME8750A/AME8750B. When the junction trmperature exceeds TJ=150oC, the themal sensor signals the shutdown logic, turning off the pass transistor and allowing the IC to cool. 7 AME, Inc. Low-Dropout 150mA / 150mA Dual CMOS Regulator AME8750 Quiescent Current vs Input Voltage Dropout Voltage vs Load Current 140 300 O V OUT =2.5V 85 C 100 O 55 C O 80 25 C 60 -5 C O O -45 C 40 Dropout Voltage (mV) Quiescent Current (uA) O 125 C 120 20 0 85℃ 125℃ 200 150 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 25℃ -45℃ 100 6 0 50 Supply Current vs. Load current Dropout Voltage @ 150mA (mV) Supply Current (µA) 80 Both Output Loaded 60 50 40 30 20 10 0 20 40 60 80 100 120 140 160 350 300 250 200 150 100 50 0 1.5 Quiescent Current vs Temperature 2.5 3 3.5 Output Voltage vs Temperature 110 1.82 VOUT =1.8V 100 Output Voltage (V) Quiescent Current @ 5V (µA) 2 Output Voltage (V) Load Current (mA) 90 80 70 1.81 1.80 1.79 1.78 60 50 -50 1.77 0 50 100 o Temperature ( C) 8 150 Dropout Voltage vs Output Voltage 90 0 100 Load Current (mA) Input Voltage (V) 70 -5℃ 50 0 0 55℃ 250 -50 0 50 Temperature (oC) 100 AME, Inc. Low-Dropout 150mA / 150mA Dual CMOS Regulator AME8750 PSRR vs. Frequency Line Transient 60 Bypass 50 3.5V 4.5V 1V/DIV VIN 30 VIN=2.9V VOUT =1.8V ILOAD=50mA 10 0 10 100 1000 10000 100000 20mV/DIV (AC-Coupled) 20 Vout PSRR (dB) No-Bypass 40 1000000 50µs/DIV Frequency (Hz) Channel-to-Channel Isolation vs Frequency Load Transient Channel-to-Channel Isolation (dB) 100 20mV/DIV (AC-Coupled) Vout VI N=4.3V ILOAD= 0 to 150mA ILOAD 100mA/DIV 10 VIN=5V RLOAD=50Ω 1 0 0.01 0.1 1 10 100 10µs/DIV Frequency (KHz) Output Noise Spectral Density Load Transient Near Dropout 10 CBP=0.01µF I OUT =1,50,100,150mA 100mA/DIV VIN =VOUT+0.1V 0.1 1 10 Frequency(kHz) 20mV/DIV (AC-Coupled) VOUT 1 ILOAD Noise(µV/√Hz) CBP=0µF IOUT=1,50,100,150mA 100 0 10µs/ DIV 9 AME, Inc. AME8750 Low-Dropout 150mA / 150mA Dual CMOS Regulator Shutdown Voltage (1V/DIV) Output Voltage (1V/DIV) Shutdown Response 10 0 0 RLOAD =100Ω AME, Inc. Low-Dropout 150mA / 150mA Dual CMOS Regulator AME8750 n Date Code Rule Marking Date Code Year A A A W W xxx0 A A A W W xxx1 A A A W W xxx2 A A A W W xxx3 A A A W W xxx4 A A A W W xxx5 A A A W W xxx6 A A A W W xxx7 A A A W W xxx8 A A A W W xxx9 n Tape & Reel Dimension SOT-26 P W AME AME PIN 1 Carrier Tape, Number of Components Per Reel and Reel Size Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size SOT-26 8.0±0.1 mm 4.0±0.1 mm 3000pcs 180±1 mm 11 AME, Inc. Low-Dropout 150mA / 150mA Dual CMOS Regulator AME8750 n Tape & Reel Dimension TSOT-26 P W AME AME PIN 1 Carrier Tape, Number of Components Per Reel and Reel Size 12 Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size TSOT-26 8.0±0.1 mm 4.0±0.1 mm 3000pcs 180±1 mm AME, Inc. Low-Dropout 150mA / 150mA Dual CMOS Regulator AME8750 n Package Dimension SOT-26 Top View Side View SYMBOLS MILLIMETERS MIN L D e 1.20REF E H A θ1 0.0472REF 0.15 0.0000 0.0059 b 0.30 0.55 0.0118 0.0217 D 2.70 3.10 0.1063 0.1220 E 1.40 1.80 0.0551 0.0709 1.90 BSC 2.60 θ1 0.0748 BSC 3.00 0.37REF L A MAX 0.00 H Front View MIN A1 e S1 MAX INCHES 0 o 0.10236 0.11811 0.0146REF 10 o 0o 10o 0.95REF 0.0374REF MILLIMETERS INCHES A1 S1 b TSOT-26 Top View Side View SYMBOLS MIN MAX MIN MAX A+A1 0.90 1.25 0.0354 0.0492 b 0.30 0.50 0.0118 0.0197 c 0.09 0.25 0.0035 0.0098 D 2.70 3.10 0.1063 0.1220 E 1.40 1.80 0.0551 0.0709 L E θ1 1.90 BSC e S1 H 2.40 A θ1 S1 3.00 0.35BSC L Front View 0.07480 BSC 0 o 10 0.95BSC 0.09449 0.11811 0.0138BSC o 0 o 10 o 0.0374BSC A1 H D e b 13 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 2006 Document: 2075-DS8750-C.01 Corporate Headquarter U.S.A. (Subsidiary) AME, Inc. Analog Microelectronics, Inc. 2F, 302 Rui-Guang Road, Nei-Hu District Taipei 114, Taiwan. Tel: 886 2 2627-8687 Fax: 886 2 2659-2989 3100 De La Cruz Blvd., Suite 201 Santa Clara, CA. 95054-2046 Tel : (408) 988-2388 Fax: (408) 988-2489