AME Low Dropout 300mA CMOS Regulator AME8818 n General Description n Functional Block Diagram The AME8818 is a CMOS linear regulator. It operated from 2.5V to 5.5V input voltage and delivers up to 300mA output current. The AME8818 provide low quiescent current (70uA typ) low dropout voltage (230mV @ 300mA typ), and excellent PSRR, thus marking them ideal for Data-Communications and battery applications. IN OUT Overcurrent Shutdown A Thermal Shutdown EN R1 The AME8818 provide over temperature and over current protected functions. It is stable with an output capacitance of 1uF or larger. BYP/NC Bandgap Reference R2 GND n Features l Input voltage range is from 2.5V to 5.5V l Output voltage range is from 1.2V to 4.5V n Typical Application l Low Dropout: 230mV @ 300mA l Guaranteed 300mA Drive Current VOUT VIN l Factory Pre-set output voltage IN OUT l Only 1uF Output Capacitor Required for EN AME8818 Stability l Provided OTP, current limit CIN 1µF l All AME’ s Green Products Meet RoHS GND NC COUT 1µF Standards Figure 1 V IN CIN 1µF n Applications EN l Data-Communication l Laptop, Palmtops, Notebook computers l Battery Power Equipment l Handheld Device ON VOUT IN EN OUT AME8818 BYP GND COUT 1µF OFF C2 1nF Figure 2 l PCMCIA Cards Rev.A.01 1 AME Low Dropout 300mA CMOS Regulator AME8818 n Pin Configuration SOT-23 Top View SOT-25 Top View AME8818AEET 3 5 1. GND 4 2. OUT AME8818 AME8818AEEV 1. IN 2. GND 3. IN 3. EN AME8818 4. BYP 5. OUT 1 2 1 Die Attach: 2 3 Non-Conductive Epoxy SOT-25 Top View 5 4 Conductive Epoxy SOT-25 Top View AME8818BEEV 1. IN 5 4 3. EN 4. NC 2 3 Die Attach: 1. EN 3. IN AME8818 4. OUT 5. NC 5. OUT 1 AME8818CEEV 2. GND 2. GND AME8818 Die Attach: 1 2 3 Die Attach: Conductive Epoxy Conductive Epoxy n Pin Description Pin Name IN Input voltage pin. It should be decoupled with 1µF or greater capacitor. GND Ground connection pin. OUT LDO voltage regulator output pin. It should be decoupled with a 1µF or greater value low ESR ceramic capacitor. EN The Enable pin normally floats high. When pulled low, the PMOS pass transistors shut off, and all internal circuit are powered down. NC No Internal Connection BYP 2 Pin Description Bypass capacitor connection. In AME8818BEEV and AME8818CEEV, IC will select internal circuit to improve ESR. In AME8818AEEV, IC will select external circuit to improve ESR and AC ripple rejection. Rev.A.01 AME Low Dropout 300mA CMOS Regulator AME8818 n Ordering Information AME8818 x x x x xxx x Special Feature1 Output Voltage Number of Pins Package Type Operating Ambient Temperature Range Pin Configuration Pin Configuration A: 1. GND 2. OUT 3. IN (SOT-23) A: 1.IN 2.GND 3.EN 4.BYP 5.OUT (SOT-25) B: 1.IN 2.GND 3.EN 4.NC 5.OUT (SOT-25) Operating Ambient Temperature Range E: -40OC to +85OC Package Type E: SOT-2X Number of Pins T: 3 V: 5 Output Voltage Special Feature 1 120: 150: 180: 250: 280: 285: 290: 300: 310: 320: 330: 360: 390: V=1.2V V=1.5V V=1.8V V=2.5V V=2.8V V=2.85V V=2.9V V=3.0V V=3.1V V=3.2V V=3.3V V=3.6V V=3.9V Z: Green C: 1.EN 2.GND 3.IN 4.OUT 5.NC (SOT-25) Rev.A.01 3 AME Low Dropout 300mA CMOS Regulator AME8818 n Available Options Part Number Marking Output Voltage Package Operating Ambient Temperature Range AME8818AEET120Z BVPMXX 1.2V SOT-23 -40OC to +85OC AME8818AEET150Z BVQMXX 1.5V SOT-23 -40OC to +85OC AME8818AEET250Z BVSMXX 2.5V SOT-23 -40OC to +85OC AME8818AEET300Z BVWMXX 3.0V SOT-23 -40OC to +85OC AME8818AEET310Z BVXMXX 3.1V SOT-23 -40OC to +85OC AME8818AEEV120Z BWAMXX 1.2V SOT-25 -40OC to +85OC AME8818AEEV180Z BWCMXX 1.8V SOT-25 -40OC to +85OC AME8818AEEV320Z BYEMXX 3.2V SOT-25 -40OC to +85OC AME8818BEEV120Z BWOMXX 1.2V SOT-25 -40OC to +85OC AME8818BEEV330Z BWXMXX 3.3V SOT-25 -40OC to +85OC AME8818CEEV390Z BYLMXX 3.9V SOT-25 -40OC to +85OC Note: 1. The first 3 places represent product code. It is assigned by AME such as BVP. 2. A bar on top of first letter represents Green Part such as BVP. 3. The last 3 places MXX represent Marking Code. It contains M as date code in "month", XX as LN code and that is for AME internal use only. Please refer to date code rule section for detail information. 4. Please consult AME sales office or authorized Rep./Distributor for the availability of output voltage and package type. 4 Rev.A.01 AME Low Dropout 300mA CMOS Regulator AME8818 n Absolute Maximum Ratings Parameter Symbol Maximum Unit Input Voltage VIN -0.3 to 6 V EN Voltage VEN -0.3 to 6 V Output Current IOUT PD / (V IN -V OUT) mA Output Voltage VOUT GND-0.3 to VIN +0.3 V B* ESD Classification 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 Ambient Temperature Range TA -40 to +85 Junction Temperature Range TJ -40 to +125 Storage Temperature Range TSTG -65 to +150 Rev.A.01 Unit o C 5 AME Low Dropout 300mA CMOS Regulator AME8818 n Thermal Information Parameter Package Conductive Epoxy Thermal Resistance* (Junction to Case) Thermal Resistance (Junction to Ambient) Die Attach Symbol SOT-25 SOT-23 θJC 140 o θJA 280 Conductive Epoxy 400 PD Non-Conductive Epoxy C/W 260 Non-Conductive Epoxy Internal Power Dissipation Unit 81 Non-Conductive Epoxy Conductive Epoxy Maximum mW 400 Maximum Junction Temperature 150 o Solder Iron (10Sec)** 350 o C C * Measure θJC on center of molding compound if IC has no tab. ** MIL-STD-202G 210F 6 Rev.A.01 AME Low Dropout 300mA CMOS Regulator AME8818 n Electrical Specifications VIN = VOUT(NOM) + 1V or VIN = 2.5V, if VOUT(NOM) <= 2.0V, IOUT = 1mA, VEN = VIN and COUT = CIN = 1µF, Typical values at TA = 25oC, unless otherwise noted. Parameter Test Conditions Min Typ Max Units VIN (Note1) 5.5 V V OUT,ACC -2 2 % Output Voltage Range VOUT 1.2 4.5 V Output Current IOUT 300 Input Voltage Output Voltage Accuracy Quiescent Current Dropout Voltage Output Voltage Line Regulation [(∆VOUT / ∆VI N)x100%] / Symbol IQ VDROP REGLINE V OUT Output Voltage Load Regulation [(∆VOUT / V OUT) x 100%] REGLOAD VI N = 5.5V, IOUT = 1mA IOUT = 300mA 70 100 VOUT ≦ 2.0V (Note2) 2.0V < VOUT ≦ 2.5V 370 500 2.6V ≦ VOUT ≦ 3.0V 280 400 VOUT ≧ 3.1V 230 330 µA mV VIN(min) ≦VI N≦VIN(max) 1.2V≦V OUT<2.5V -0.4 0.1 0.4 VIN(min) ≦VI N≦VIN(max) 2.5≦ VOUT<3.3V -0.2 0.03 0.2 VOUT+0.3V≦VI N≦VIN(max) 3.3V≦VOUT <4.5V -0.1 0.01 0.1 VOUT≧3.3V -0.003 0.002 2.5V≦VOUT<3.3V -0.005 0.004 %/mA 1.2V≦VOUT<2.5V -0.015 0.01 1mA≦IOUT ≦300mA /∆IOUT Output Current Limit mA ILIM VOUT = 0.8 x VOUT(NOM) Shutdown Current ISHDN VEN = 0V, VIN(min) ≦ VI N ≦ 5.5V 5 Power Supply Ripple Rejection PSRR f = 1KHz, IOUT = 100mA, Cout=1µF(Note3) 60 Enable High (enabled) VEN(HI) VIN(min) ≦ VI N ≦ 5.5V 1.4 VI N V Enable Low (shutdown) VEN(LO) VIN(min) ≦ VI N ≦ 5.5V 0 0.4 V IEN VEN = VI N 0.1 1 µA TSHDN Shutdown, temperature increasing 150 TR S Restore, temperature decreasing 130 Enable Pin Current (enabled) Thermal Shutdown Temperature 330 500 %/V mA 10 µA dB O C Note 1: VIN(MIN)=VOUT+VDROP or VIN(min) =2.5V, whichever is greater. Note 2: For VOUT below 2.0V, Dropout Voltage is the input to output differential. Note 3: For VOUT below 1.5V, the minimun input. Voltage is 3.0V. Rev.A.01 7 AME AME8818 n Detailed Description The AME8818 is low-dropout, low quiescent-current linear regulator designed primarily for battery-powered applications. It is available with present output voltage ranging from 1.2V to 4.5V, and can supply loads up to 300mA. n Shutdown Mode The AME8818 has enable-control-pin. Drive EN low to shutdown OUT. Drive EN to shutdown the entire chip, reducing supply current to 5µA. Connected EN to logic-high or IN for normal operation. n Circuit Limit The AME8818 contains current limiters which monitor and control the pass transistor's Gate voltage, limiting the guaranteed maximum output current to 330mA minimum. The output can be shorted to ground for an indefinite time without damaging the part. n Thermal-Overload Protection Thermal-overload protection limits total power dissipation in the AME8818. When the junction temperature arrive TJ = 160oC approximately, the thermal sensor signals the shutdown logic, turning off the pass transistor and allowing the IC to cool. 8 Low Dropout 300mA CMOS Regulator n Capacitor Selection and Regulator Stability Use a 1µF capacitor on the AME8818 input and a 1µF capacitor on the OUT. Larger input capacitor values and lower ESR provide better supply noise rejection and line transient response. To reduce output noise and improve load transient voltage dips, use larger output capacitors up to 4.7µF. For stable operation over the full temperature range with load currents up to 300mA, input and output capacitors should be a minimum of 1µF by X7R. Note that some ceramic dielectrics large capacitance and ESR variation with temperature. With dielectrics such as Z5U and Y5V, it may be necessary to use 2.2µF or more for up to 300mA load current to ensure stability at temperatures below -10oC. With X7R or X5R dielectrics, 1µF is sufficient at all operating temperatures. These regulators are optimized for ceramic capacitors. Tantalum capacitors are not recommended. Bypass capacitor can be in between 0.1µF~0.001µF. A larger capacitor improves AC ripple rejection, but also make the output come up slowly. n PSRR and Operation from sources Other than Batteries The AME8818 is designed to deliver low-dropout voltage and low quiescent currents in battery-powered system. Power-supply rejection ratio is 60dB (Typ.) at 1KHz. When operating from sources other than betteries, PSRR and transient response can be improved by increasing input, output and bypass capacitors(see PSRR vs Frequency Curve). Rev.A.01 AME Low Dropout 300mA CMOS Regulator AME8818 VOUT vs. Temperature Quiesent Current vs Temprature 100 3.05 VOUT = 3.0V Quiesent Current (V) VOUT = 3.0V 3.04 V OUT (V) 3.03 3.02 IOUT =1mA 3.01 3.00 IOUT=300mA 2.99 80 60 I OUT=300mA 40 IOUT=1mA 20 2.98 2.97 -50 -25 0 +25 +50 +75 +100 0 -50 +125 -25 0 o +25 +50 +75 +100 +125 Temperature ( oC) Temperature ( C) EN Pin Shutdown Threshold Voltage vs Current Limit vs Input Voltage Temperature 750 VOUT = 1.2V 700 1.25 Current Limit (mA) EN Pin Shutdown Threshold Voltage (V) 1.50 1.00 0.75 V OUT = 3.0V 650 600 550 500 450 0.50 400 0.25 -50 -25 0 +25 +50 +75 +100 350 4.0 +125 4.5 o 5.5 AME8818AEEV Power Supply Rejection Ratio Dropout Voltage vs Load Current 400 100 90 VOUT = 3.0V IOUT = 300mA 350 O TA=125 C 300 IOUT=10mA VOUT = 1.2V CBYP = 0.1µF IOUT =1mA 80 70 PSRR (dB) Dropout Voltage (mV) 5.0 Input Voltage (V) Temperature ( C) 250 200 150 TA=25 C 0 TA=-40 C 0 50 100 150 200 Load Current (mA) Rev.A.01 40 20 O 50 IOUT =100mA 50 30 O 100 60 10 250 300 0 1K 10 K 100K 1M Frequency (H z) 9 AME Low Dropout 300mA CMOS Regulator AME8818 AME8818AEEV Power Supply Rejection Ratio Line Transient Response 90 VOUT = 3.3V CBYP = 0.1µF I OUT =10mA 80 60 50 IOUT =1mA 40 VIN = 4V~5.5V VOUT = 3.3V IOUT = 1mA I OUT =100mA V IN(2V/DIV) PSRR (dB) 70 VOUT (50mV/DIV) 100 30 20 10 0 1K 10K 100 K 1M TIME (100 Frequency (Hz) Sec/DIV) AME8818BEEV Start Up delay time EN (5V/DIV) VOUT = 3.3V IOUT = 1mA~250mA VOUT (2V/DIV) IOUT (100mA/DIV) VOUT (50mV/DIV) Load Transient Response TIME (40µSec/DIV) VIN = 5V VOUT = 3.3V IOUT = 1mA TIME (10µSec/DIV) AME8818BEEV V IN = 5V V OUT = 3.3V IOUT = 1mA V OUT (2V/DIV) EN (5V/DIV) EN Pin shutdown Response TIME (20µSec/DIV) 10 Rev.A.01 AME Low Dropout 300mA CMOS Regulator AME8818 n Date Code Rule Month Code 1: January 7: July 2: February 8: August 3: March 9: September 4: April A: October 5: May B: November 6: June C: December A A A A A A A A A A A A A A A A A A A A Marking A M A M A M A M A M A M A M A M A M A M X X X X X X X X X X X X X X X X X X X X Year xxx0 xxx1 xxx2 xxx3 xxx4 xxx5 xxx6 xxx7 xxx8 xxx9 n Tape and Reel Dimension SOT-23 P W AME AME PIN 1 Carrier Tape, Number of Components Per Reel and Reel Size Rev.A.01 Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size SOT-23 8.0±0.1 mm 4.0±0.1 mm 3000pcs 180±1 mm 11 AME Low Dropout 300mA CMOS Regulator AME8818 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.A.01 AME Low Dropout 300mA CMOS Regulator AME8818 n Package Dimension SOT-23 Top View Side View D SYMBOLS E H θ1 L PIN 1 e MILLIMETERS MIN MAX MIN MAX A 0.90 1.40 0.0354 0.0551 A1 0.00 0.15 0.0000 0.0059 b 0.30 0.50 0.0118 0.0197 D 2.70 3.10 0.1063 0.1220 E 1.40 1.80 0.0551 0.0709 1.90 BSC e H Front View 2.40 A θ1 0.0748 BSC 3.00 0.35BSC L 0 o 0.0945 0.1181 0.0138BSC o 10 0 o 10 o A1 b INCHES SOT-25 Top View Side View D E H θ1 PIN 1 L S1 SYMBOLS MAX MIN MAX A 0.90 1.30 0.0354 0.0512 A1 0.00 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 H Front View 1.90 BSC 2.60 A θ1 0.07480 BSC 3.00 0.37BSC L 0 o 0.0146BSC o 10 0.95BSC 0.10236 0.11811 0 o 10 o 0.0374BSC A1 S1 Rev.A.01 INCHES MIN e e b MILLIMETERS 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 2009 Document: 1261-DS8818-A.01 Corporate Headquarter AME, Inc. 2F, 302 Rui-Guang Road, Nei-Hu District Taipei 114, Taiwan, R.O.C. Tel: 886 2 2627-8687 Fax: 886 2 2659-2989