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Details, datasheet, quote on part number:AAT3236IJS-285-T1
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Datasheet text preview:
AAT3236
300mA CMOS High Performance LDO General Description
The AAT3236 is a MicroPowerTM Low Dropout Linear Regulator designed to deliver a continuous 300mA output load current and is capable of handling short duration current peaks up to 500mA. With a very small footprint SOT23-5 package it is ideally suited for portable applications where low noise, high power supply ripple rejection, extended battery life and small size are critical. The AAT3236 features fast transient response and low output self noise for powering sensitive RF circuitry. Other features include low quiescent current, typically 100µA, and low dropout voltage, typically 300mV at full output load current. The device has internal output short circuit protection and thermal shutdown to prevent damage under extreme conditions. The AAT3236 also features a low-power shutdown mode for longer battery life. A bypass pin is provided to improve PSRR performance by connecting an external capacitor from the AAT3236's reference output to ground. The AAT3236 is available in a space saving SOT23-5 or SC70JW-8 package in 7 factory programmed voltages of 2.5V, 2.7V, 2.8V, 2.85V, 3.0V, 3.3V, or 3.5V.
Features
· · · · · ·
PowerLinearTM
· · · · · · · ·
500mA Peak Output Current Low Dropout - Typically 300mV at 300mA Guaranteed 300mA Output High accuracy ±1.5% 100µA Quiescent Current High Power Supply Ripple Rejection · 70 dB at 1kHz · 50 dB at 10kHz Very low self noise 45µVrms/rtHz Noise reduction bypass capacitor Short circuit protection Over-Temperature protection Shutdown mode for longer battery life Low temperature coefficient 7 Factory programmed output voltages SOT-23 5-pin or SC70JW 8-pin package
Preliminary Information
Applications
· · · · Cellular Phones Notebook Computers Portable Communication Devices Personal Portable Electronics
Typical Application
VIN IN
VOUT
AAT3236
OUT BYP
ON/OFF 1µF
EN GND
10nF
2.2µF
GND
GND
3236.2001.11.0.9
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AAT3236
300mA CMOS High Performance LDO Pin Descriptions
Pin #
SOT23-5 SC70JW-8
Symbol
IN GND EN
Function
Input voltage pin - should be decoupled with 1µF or greater capacitor. Ground connection pin Enable pin - this pin is internally pulled high. When pulled low the PMOS pass transistor turns off and all internal circuitry enters low-power mode, consuming less than 1µA. Bypass capacitor connection - to improve AC ripple rejection, connect a 10nF capacitor to GND. This will also provide a soft start function. Output pin - should be decoupled with 2.2µF capacitor.
1 2 3
5, 6 8 7
4
1
BYP
5
2, 3, 4
OUT
Pin Configuration
SOT-23-5 (Top View) SC70JW-8 (Top View)
IN GND EN
15 2 34
OUT BYP
BYP OUT OUT OUT
1 2
8 7
3 4
6 5
GND EN IN IN
1 2
2
3236.2001.11.0.9
AAT3236
300mA CMOS High Performance LDO Absolute Maximum Ratings
Symbol
VIN IOUT TJ TLEAD
(TA=25°C unless otherwise noted) Value
6 PD/(VIN-VO) -40 to 150 300
Description
Input Voltage DC Output Current Operating Junction Temperature Range Maximum Soldering Temperature (at leads, 10 sec)
Units
V mA °C °C
Note: Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at conditions other than the operating conditions specified is not implied. Only one Absolute Maximum rating should be applied at any one time.
Thermal Information
Symbol
JA PD
Description
Maximum Thermal Resistance (SOT23-5, SC70JW-8) Maximum Power Dissipation1 (SOT23-5, SC70JW-8)
1
Rating
190 526
Units
°C/W mW
Note 1: Mounted on a demo board.
Recommended Operating Conditions
Symbol
VIN T
Description
Input Voltage Ambient Temperature Range
Rating
(VOUT+0.3) to 5.5 -40 to +85
Units
V °C
Electrical Characteristics (VIN=VOUT(NOM)+1V, IOUT=1mA, COUT = 2.2µF, CIN = 1µF, CBYP = 10nF, TA= -40 to 85°C unless otherwise noted. For typical values TA=25°C)
Symbol
VO U T IOUT VDO ISC IQ ISD VOUT/ VOUT*VIN VOUT(line) VOUT(load) VEN(L) VEN(H) IEN PSRR TSD THYS eN TC
Description
Output Voltage Tolerance Output Current Dropout Voltage2 Short Circuit Current Ground Current Shutdown Current Line Regulation Dynamic Line Regulation Dynamic Load Regulation Enable Threshold Low Enable Threshold High Leakage Current Enable Pin Power Supply Rejection Ratio Over Temp Shutdown Threshold Over Temp Shutdown Hysteresis Output Noise Output Voltage Temp. Coeff.
Conditions
IOUT = 1mA to 300mA VOUT > 1.2V IOUT = 300mA VOUT < 0.4V VIN = 5V, no load,EN = VIN VIN = 5V, EN = 0V VIN = VOUT + 1 to 5.5V VIN=VOUT+1V to VOUT+2V, IOUT=150mA, TR/TF =2µs IOUT = 1mA to 150mA, TR<5µs TA=25°C TA=-40 to 85°C
Min Typ Max
-1.5 -2.5 300 300 600 100 1.5 2.5 500 150 1 0.07
Units
% % mA mV mA µA µA %/V mV mV V V µA dB °C °C µVRMS/rtHz ppm/°C
1 30 0.6 1.5 1
VEN=5V IOUT = 10mA, CBYP = 10nF 1 kHz 10kHz 1MHz 70 50 47 150 10 45 22
Noise Power BW= 300Hz to 50KHz
Note 2: VDO is defined as VIN - VOUT when VOUT is 98% of nominal. 3236.2001.11.0.9
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AAT3236
300mA CMOS High Performance LDO Typical Characteristics
Dropout Voltage vs. Temperature
400 3.1
Dropout Characteristics
Dropout Voltage (mV)
350 300 250
IL=300mA
3.0
IOUT=10mA IOUT=0mA IOUT=50mA
150 100 50 0 -40 -20 0 20 40 60 80
IL=150mA IL=100mA IL=50mA
Vout
200
2.9
IOUT=100mA IOUT=150mA
2.8
IOUT=300mA
2.7 2.9 3.0 3.1 3.2 3.3
100
120
Temperature (°C)
Vin
Ground Current vs. Temperature
105 100 120 100
Ground Current vs. Input Voltage
VOUT=3.0V IOUT=0 IOUT=50mA IOUT=150mA IOUT=300mA
Ignd (µA)
95 90 85 80 -50 0 50 100 150
IGND (µA)
80 60 40 20 0 2
3
4
5
Temperature (°C)
VIN
Dropout Voltage vs. IOUT
350 3.014
Output Voltage vs. Temperature
Dropout Voltage (mV)
300 250 200 150 100 50 0 0 50 100 150
Output Voltage
85 C 25 C -40 C
3.013 3.012 3.011 3.01 3.009 3.008 3.007
200
250
300
-50
0
50
100
150
Output Current (mA)
Temperature (°C)
4
3236.2001.11.0.9
AAT3236
300mA CMOS High Performance LDO
On/Off Transient Response No CBYP Capacitor
On/Off Transient Response CBYP=10nF
EN (2v/div) 150mA 10mA
EN (2V/div) VOUT (1V/div)
VOUT (1v/div) 10mA 150mA 300mA 100µs/div
300mA 5ms/div
Line Transient Response
3.20 3.15 3.10 6 5 4 3 2 1 0 3.10 3.05 3.00
Load Transient Response
1200 1000 800 600 400 200 0
3.05 3.00 2.95 2.90
2.95 2.90 2.85 2.80
5µs/div
100 µS/div
Short Circuit Current
1.2 1 90 80
Power Supply Rejection Ratio vs. Frequency
PSRR (dB)
0.8
70 60 50 40
Isc(A)
0.6 0.4 0.2
10µF
4.7µF
2.2µF
1.0µF
10 100 1k 10k 100k 1m 10m
30 0
10ms/div
Frequency (Hz)
3236.2001.11.0.9
IOUT (mA)
VOUT
VOUT
VIN
5
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