AME AME8831 150mA Hi-PSRR, Low-Quiescent LDO with In-Rush Current Control For USB Application n General Description n Applications l Instrumentation The AME8831 family of positive, linear regulators feature low quiescent current (17µA typ.) with low dropout voltage, making them ideal for battery applications. The space-saving SOT-25 package is attractive for “ Pocket” and “ Hand Held” applications. l Portable Electronics l Wireless Devices l Cordless Phones l PC Peripherals These rugged devices have both Thermal Shutdown, and Current limitation to prevent device failure under the “ Worst” of operating conditions. In applications requires a low noise regulated supply. The AME8831 family uses the SR pin to program the output voltage’ s slew rate to control the in-rush current. This is specifically used in the USB application where large load capacitance is present at start-up. l Battery Powered Widgets l Electronic Scales n Function Block Diagram VOUT VIN * ENB or EN 10 k The AME8831 also features a logic-enabled sleep mode to shutdown the regulator, reducing quiescent current to 1µA typical at TA= 25oC. Current Limit / Thermal Protection AMP R1 V ref GND The AME8831 is stable with an output capacitance of 4.7µF or larger. R2 SR * AME8831A: ENB, AME8831B: EN n Features n Typical Application l Guaranteed 150mA Output l Dropout Voltage Typically 150 mV at 150 mA VIN l 17µA Quiescent Current l Over-Temperature Shutdown IN SR AME8831A 1µF ENB l Over-Current Limitation GND OUT 0.01µF + l Noise Reduction Bypass Capacitor 4.7µF l Power-Saving Shutdown Mode l Space-Saving SOT-25 Package l Factory Pre-set Output Voltages l Enable pin option VIN l ENB active low enable l EN active high enable l All AME's Lead Free Products Meet RoHS Standards Rev.H.05 1µF IN SR AME8831B EN GND OUT 0.01µF + 4.7µF 1 AME 150mA Hi-PSRR, Low-Quiescent LDO with In-Rush Current Control For USB Application AME8831 n Pin Configuration SOT-25 Top View 5 SOT-25 Top View 4 AME8831 AME8831A 5 4 1. IN 1. IN 2. GND 2. GND AME8831 3. ENB 4. SR 2 3 3. EN 4. SR 5. OUT 1 AME8831B 5. OUT * Die Attach: Conductive Epoxy 1 2 3 * Die Attach: Conductive Epoxy n Pin Description Pin Number Pin Name 1 IN 2 GND Input voltage pin. It should be decoupled with 1µF or greater capacitor. Ground connection pin. EN Enable pin. When pulled low, the PMOS pass transistor turns off, current consuming less than 1µA. ENB Enable bar pin. When pulled high, the PMOS pass transistor turns off, current consuming less than 1µA. 4 SR The SR(Slew Rate) terminal is used to control the VOUT in-rush current. 5 OUT 3 2 Pin Description LDO voltage regulator output pin. It should be decoupled with a 1µF or greater value low ESR ceramic capacitor. Rev.H.05 AME 150mA Hi-PSRR, Low-Quiescent LDO with In-Rush Current Control For USB Application AME8831 n Ordering Information AME8831 x x x x xxx x Special Feature Voltage Number of Pins Package Type Operating Ambient Temperature Range Pin Configuration Pin Configuration A: 1. IN 2. GND 3. ENB 4. SR 5. OUT (SOT-25) Operating Ambient Temperature Range E: -40OC to +85OC Package Type Number of Pins E: SOT-2X V: 5 Output Voltage 180: 250: 285: 300: 330: V=1.8V V=2.5V V=2.85V V=3.0V V=3.3V Special Feature Y: Lead free & Low profile Z: Lead free B: 1. IN 2. GND 3. EN 4. SR 5. OUT (SOT-25) Rev.H.05 3 AME 150mA Hi-PSRR, Low-Quiescent LDO with In-Rush Current Control For USB Application AME8831 n Ordering Information Part Number Marking* Output Voltage Package Operating Ambient Temperature Range AME8831AEEV180Z BIKww 1.8V SOT-25 - 40oC to +85oC AME8831AEEV180Y BIKww 1.8V TSOT-25 - 40oC to +85oC AME8831AEEV250Z BILww 2.5V SOT-25 - 40oC to +85oC AME8831AEEV250Y BILww 2.5V TSOT-25 - 40oC to +85oC AME8831AEEV285Z BIHww 2.85V SOT-25 - 40oC to +85oC AME8831AEEV285Y BIHww 2.85V TSOT-25 - 40oC to +85oC AME8831AEEV300Z BIMww 3.0V SOT-25 - 40oC to +85oC AME8831AEEV300Y BIMww 3.0V TSOT-25 - 40oC to +85oC AME8831AEEV330Z BDVww 3.3V SOT-25 - 40oC to +85oC AME8831AEEV330Y BDVww 3.3V TSOT-25 - 40oC to +85oC AME8831BEEV180Z BEYww 1.8V SOT-25 - 40oC to +85oC AME8831BEEV180Y BEYww 1.8V TSOT-25 - 40oC to +85oC AME8831BEEV250Z BFJww 2.5V SOT-25 - 40oC to +85oC AME8831BEEV250Y BFJww 2.5V TSOT-25 - 40oC to +85oC AME8831BEEV285Z BEZww 2.85V SOT-25 - 40oC to +85oC AME8831BEEV285Y BEZww 2.85V TSOT-25 - 40oC to +85oC AME8831BEEV300Z BFAww 3.0V SOT-25 - 40oC to +85oC AME8831BEEV300Y BFAww 3.0V TSOT-25 - 40oC to +85oC AME8831BEEV330Z BFBww 3.3V SOT-25 - 40oC to +85oC AME8831BEEV330Y BFBww 3.3V TSOT-25 - 40oC to +85oC Note: ww represents the date code and pls refer to the Date Code Rule before Package Dimension. * A line on top of the first character represents lead free plating such as BDVww. Please consult AME sales office or authorized Rep./Distributor for output voltage and package type availability. 4 Rev.H.05 AME 150mA Hi-PSRR, Low-Quiescent LDO with In-Rush Current Control For USB Application AME8831 n Absolute Maximum Ratings Parameter Maximum Unit 6 V Output Current PD / (V IN - VOUT) mA Output Voltage GND-0.3 to VIN +0.3 V 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 Ambient Temperature Range TA - 40 to +85 Junction Temperature Range TJ - 40 to +125 Storage Temperature Range TSTG -65 to +150 Unit o C n Thermal Information Parameter Package Die Attach Thermal Resistance* (Junction to Case) Thermal Resistance (Junction to Ambient) Symbol Maximum θJC 81 Unit o SOT-25 Conductive Epoxy Internal Power Dissipation θJA 260 PD 400 C/W 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 Rev.H.05 5 AME 150mA Hi-PSRR, Low-Quiescent LDO with In-Rush Current Control For USB Application AME8831 n Electrical Specifications Over operating temperature range(TJ=-40oC to +125oC), VIN=VOUT(nom) + 1V, or VIN=VIN(Min) whichever is greater, IOUT=1mA, VEN =VIN(V ENB=0), and COUT=4.7uF, CIN=1uF unless otherwise noted. Typical values are at TA=25oC. Parameter Input Voltage Symbol Test Condition Min Max Units Note1 5.5 V TA=25 C -1.5 1.5 TJ = -40oC to +125 oC -3 3 VIN o Output Voltage Accuracy VOUT(nom) Line Regulation ∆V OUT *% V OUT ∆V IN REGLINE VOUT=1.8, TA=25oC 2.5V<V IN <5.5V TJ= -40 C to +125 C o VOUT=2.5, TA=25 C 3V<VIN <5.5V TJ= -40 C to +125 C o o TA=25 C -0.25 3.3V<V IN <5.5V TJ= -40 C to +125 C -0.35 VOUT=3.0, TA=25oC -0.25 3.5V<V IN <5.5V TJ= -40 C to +125 C o o o o VOUT=3.3, TA=25 C 3.8V<V IN <5.5V TJ= -40 C to +125 C o (See Note2) Output Current Limit ILIM VOUT=0V o 0.15 0.3 0.25 0.35 0.15 0.25 0.35 0.15 -0.35 -0.2 0.35 0.1 -0.3 200 10µA<IOUT<150mA TA=25 C 10µA<IOUT<150mA TJ = -40 C to +125 C o %/V 0.25 0.2 0.3 150 o % 0.4 -0.35 VOUT=2.85, o 0.2 -0.40 -0.25 o IOUT IQ o o Output Current Quiescent Current -0.30 Typ mA 350 750 17 25 o 30 mA µA Load Regulation = ∆V OUT *% V OUT ∆I ( mA) REGLOAD 10µA<=IOUT<=150mA TA=25oC -0.1 0.0025 0.1 %/mA Note1 : VIN(min) = VOUT + V DROPOUT(max) Note2 : Continuous output current and operating junction temperature are limited by internal protection circuitry, but it is not recommended that the device operate under conditions beyond those specified in this table for extended periods of time. 6 Rev.H.05 AME 150mA Hi-PSRR, Low-Quiescent LDO with In-Rush Current Control For USB Application AME8831 n Electrical Specifications (contd.) Parameter Test Condition Symbol TA=25 C VOUT(nom)=1.8V IOUT=150mA o Dropout Voltage @ VOUT= VOUT(nom)-2%VOUT(nom) VDO 800 850 o 450 o o TA=25 C 350 o TJ=-40 C to +125 C VOUT(nom)=3V TA=25oC o 250 o mV 350 400 o TA=25 C o 400 450 TJ=-40 C to +125 C VOUT(nom)=3.3V 500 550 TJ=-40 C to +125 C o Units 900 TA=25 C IOUT=150mA IOUT=150mA Max o o VOUT(nom)=2.85V IOUT=150mA Typ TJ=-40 C to +125 C VOUT(nom)=2.5V IOUT=150mA Min o 150 o 250 300 TJ=-40 C to +125 C Over Temerature Shutdown OTS Over Temerature Hysterisis OTH 20 TC 30 ppm TA=25oC 65 dΒ TA=25oC 100 µVRMS VOUT Temperature Coefficient Thermal shutdown increasing 150 o C VOUT=3.3V, f=1 kHz, Power Supply Ripple Rejection PSRR IOUT = 100mA COUT=10µF C(SR)=0.01µF BW=200Hz to 100kHz Output Voltage Noise eN IOUT=150mA COUT=10µF, C(SR)=0.47µF VENBH ENB and EN Input Threshold 1.4 VENH VENBL VIN VIN=2.5V to 5.5V V 0 VENL 0.3 EN or ENB Input Bias Current IEN ENB=0, EN=VIN VIN =2.5V to 5.5V 0.1 1 µA Shutdown Current ISD ENB=VIN , EN=0 VIN =2.5V to 5.5V 1 2 µA VOUT=3.3V Start up Time Rev.H.05 TSTR CSR =0.01µF RLOAD =22Ω CSR =0.1µF COUT=10µF CSR =0.22µF 20 o TA=25 C 200 ms 450 7 AME AME8831 150mA Hi-PSRR, Low-Quiescent LDO with In-Rush Current Control For USB Application n Detail Description The AME8831 family of CMOS regulators contain a PMOS pass transistor, voltage reference, error amplifier, over-current protection, and thermal shutdown function. The P-channel pass transistor receives data from the error amplifier, over-current limit, and thermal protection circuits. During normal operation, the error amplifier compares the output voltage to a precision reference. Over-current and Thermal shutdown circuits become active when the junction temperature exceeds 150oC, or the current exceeds about 350mA. During thermal shutdown, the output voltage remains low. Normal operation is restored when the junction temperature drops below 120oC. The AME8831 switches from voltage mode to current mode when the load exceeds the rated output current. This prevents over-stress. n External Capacitors The AME8831 is stable with an output capacitor to ground of 4.7µF or greater. Ceramic capacitors have the lower ESR, and will offer the best AC performance. Conversely, Aluminum Electrolytic capacitors exhibit the higher ESR, resulting in the poor AC response. Unfortunately, large value ceramic capacitors are comparatively expensive. One option is to parallel a 0.1µF ceramic capacitor with a 10µF Aluminum Electrolytic. The benefit is low ESR, high capacitance, and low overall cost. A second capacitor is recommended between the input and ground to stabilize VIN. The input capacitor should be at least 0.1µF to have a beneficial effect. All capacitors should be placed in close proximity to the pins. A “ Quiet” ground termination is desirable. This can be achieved with a “ Star” connection n Enable The Enable pin is optional. EN for active high enable, ENB for active low enable. When disable the Enable Pin EN=0, ENB=VIN, the PMOS pass transistor shuts off, and all internal circuits are powered down. In this state, the standby current is less than 1µA. 8 Rev.H.05 AME 150mA Hi-PSRR, Low-Quiescent LDO with In-Rush Current Control For USB Application AME8831 Output Noise Spectral Density Output Voltage vs Load Current 10 3.26 Noise (µV/ √ Hz) Output Voltage (V) VIN=4.3V COUT=4.7µF C(SR)=0.47µF V IN=4.3V T J=25℃ 3.25 3.24 3.23 3.22 3.21 IO =150mA 1 IO=1mA 3.2 3.19 0 15 30 45 60 75 90 105 120 135 0.1 100 150 1000 10000 Output Impedance vs Frequency Quiescent Current vs Temperature 2.0 30 VIN =4.3V C O=4.7 µF 1.6 Output Impedance Quiescent Current (uA) 1.8 25 IO=1mA 20 IO=150mA 15 10 1.4 1.2 1.0 IO =50mA 0.8 0.6 0.4 5 0.2 0 -40 -20 -5 25 55 85 0 100 125 IO=150mA 1000 10000 Dropout Voltage vs. Temperature Ripple Rejection vs Frequency V IN =4.3V V OUT=3.3V COUT =10µF C(SR)=0.47µF VIN=4.3V 100 Ripple Rejection (dB) 250 Dropout Voltage (mV) 1000000 120 300 200 IO=150mA 150 100 IO=1mA 80 60 I O=150mA 40 20 50 -20 25 Temperature (o C) Rev.H.05 100000 Frequency (Hz) Temperature (o C) 0 -40 100000 Frequency (Hz) Load Current (mA) 85 125 0 100 1000 10000 100000 1000000 Frequency (Hz) 9 AME 150mA Hi-PSRR, Low-Quiescent LDO with In-Rush Current Control For USB Application AME8831 VOUT vs Temperature Line Transient Response 3.28 Input Voltage (V) IOUT=1mA 3.26 5.3 Output Voltage (mV) VOUT (V) 4.3 3.24 IOUT=150mA 3.22 3.20 VIN=4.3V 3.18 -40 125 Enable Voltage (V) (Start-Up) 3 2 V IN =4.3V V OUT=3.3V IO=150mA C (SR)=0.22µF CO =10µF TJ =25oC 5 0 C (SR) =0.01µF 3 C (SR)=0.1 µF V IN =4.3V V OUT=3.3V IO =150mA C O=10µF TJ =25 oC 2 1 0 Time (10mS/Div) Stability vs ESR vs ILOAD Load Transient Response 100 200 100 0 Unstable Region VIN=4.3V VOUT =3.3V CL =1µF 10 ESR (Ω) Output Current (mA) 85 (Start-Up) Time (10mS/Div) 0 Output Voltage (mV) 55 Output Voltage, Enable Voltage vs Time 0 0 25 Output Voltage, Enable Voltage vs Time 5 1 -20 Temperature (oC) Output Voltage (V) Output Voltage (V) Enable Voltage (V) Time (20µS/Div) -50 VIN =4.3V VOUT =3.3V C O=10 µF TJ=25oC Stable Region 1 Untested Region Time (20µS/Div) 0.1 0 60 90 120 150 ILOAD (mA) 10 Rev.H.05 AME 150mA Hi-PSRR, Low-Quiescent LDO with In-Rush Current Control For USB Application AME8831 Stability vs ESR vs ILOAD 100 Unstable Region V IN =4.3V V OUT=3.3V CL =10µF ESR (Ω) 10 Stable Region 1 Untested Region 0.1 0 60 90 120 150 ILOAD (mA) Rev.H.05 11 AME 150mA Hi-PSRR, Low-Quiescent LDO with In-Rush Current Control For USB Application AME8831 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 and Reel Dimension SOT-25 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 SOT-25 8.0±0.1 mm 4.0±0.1 mm 3000pcs 180±1 mm Rev.H.05 AME 150mA Hi-PSRR, Low-Quiescent LDO with In-Rush Current Control For USB Application AME8831 n Tape and Reel Dimension TSOT-25 P W AME AME PIN 1 Carrier Tape, Number of Components Per Reel and Reel Size Rev.H.05 Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size TSOT-25 8.0±0.1 mm 4.0±0.1 mm 3000pcs 180±1 mm 13 AME 150mA Hi-PSRR, Low-Quiescent LDO with In-Rush Current Control For USB Application AME8831 n Package Dimension SOT-25 Top View Side View SYMBOLS D L MIN E H MILLIMETERS θ1 S1 1.20REF A 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 e θ1 2.60 0.07480 BSC 3.00 0.37BSC 0 o 0.10236 0.11811 0.0146BSC 10 o 0 o 10 0.95BSC 0.0374BSC MILLIMETERS INCHES S1 o A1 A MAX 0.00 L Front View MIN A1 H e MAX INCHES b TSOT-25 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 E H L D θ1 S1 e 1.90 BSC e H 2.40 b 14 S1 0 o 10 0.95BSC 0.09449 0.11811 0.0138BSC o 0o 10o 0.0374BSC A1 A θ1 3.00 0.35BSC L Front View 0.07480 BSC Rev.H.05 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. , November 2008 Document: 1009-DS8831-H.05 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