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Details, datasheet, quote on part number:AAT3239ITS-3.3-T1
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| Part: | AAT3239ITS-3.3-T1 |
| Category: | Power Management => Regulators => Linear Regulators => LDO (Low Drop Out) |
| Description: | 500mA Micropower LDO<<<>>>the AAT3239 Micropower Low Dropout Linear<<<>>>regulator is Ideally Suited For Portable Applications<<<>>>where Very Fast Transient Response, Extended Battery<<<>>>life And Small Size Are Critical. The AAT3239 Has<<<>>>been Specifically Designed For High Speed Turn on And<<<>>>turn Off Performance, Fast Transient Response, Good<<<>>>power Supply Rejection Ratio (PSRR) And is Reasonably<<<>>>low Noise, Making it Ideal For Powering Sensitive<<<>>>circuits With Fast Switching Requirements. |
| Company: | Anadigics, Inc. |
| Datasheet: | Download AAT3239ITS-3.3-T1 datasheet File size : 328 kB |
| Request For quote: | Find where to buy AAT3239ITS-3.3-T1
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Datasheet text preview:
500mA MicroPowerTM LDO General Description
The AAT3239 MicroPowerTM Low Dropout Linear Regulator is ideally suited for portable applications where very fast transient response, extended battery life and small size are critical. The AAT3239 has been specifically designed for high speed turn on and turn off performance, fast transient response, good power supply rejection ratio (PSRR) and is reasonably low noise, making it ideal for powering sensitive circuits with fast switching requirements. Other features include low quiescent current, typically 70µA, and low dropout voltage which is typically less than 400mV at 300mA. The device is output short circuit protected and has a thermal shutdown circuit for additional protection under extreme operating conditions. The AAT3239 also features a low-power shutdown mode for extended battery life. A reference bypass pin has been provided to improve PSRR performance and output noise, by connecting a small external capacitor from the AAT3239's reference output to ground. The AAT3239 is available in an 8-pin TSOPJW-8 package in factory programmed voltages.
AAT3239
Features
· · · · · · · · · · · · · · ·
PowerLinearTM
500mA Output Current Low Dropout - 400mV at 300mA High accuracy ±2.0% 70µA Quiescent Current Fast line and load transient response High speed device turn-on and shutdown High Power Supply Rejection Ratio Low self noise Short circuit protection Over-Temperature protection Uses Low ESR ceramic capacitors Noise reduction bypass capacitor Shutdown mode for longer battery life Low temperature coefficient TSOPJW 8-pin package
Preliminary Information
Applications
· · · · · Cellular Phones Notebook Computers Portable Communication Devices Personal Portable Electronics Digital Cameras
Typical Application
VIN IN OUT VOUT
AAT3239
ON/OFF 1µF EN GND 10nF 2.2µF BYP
GND
GND
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500mA MicroPowerTM LDO Pin Descriptions
Pin #
1 2
AAT3239
Symbol
BYP EN
Function
Bypass capacitor connection - to improve AC ripple rejection, connect a 10nF capacitor to GND. This will also provide a soft start function. Enable pin - this pin should not be left floating. When pulled low the PMOS pass transistor turns off and all internal circuitry enters low-power mode, consuming less than 1µA. Output pin - should be decoupled with 2.2µF ceramic capacitor. Input voltage pin - should be decoupled with 1µF or greater capacitor. Ground connection pin
3 4 5, 6, 7, 8
OUT IN GND
Pin Configuration
TSOPJW-8 (Top View) BYP EN OUT IN GND GND GND GND
1
8
2
7
3
6
4
9
2
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500mA MicroPowerTM LDO Absolute Maximum Ratings1
Symbol
VIN IOUT TJ
AAT3239
Description
Input Voltage DC Output Current Operating Junction Temperature Range
Value
6 PD/(VIN-VO) -40 to 150
Units
V mA °C
Note 1: 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 Maximum Power Dissipation 2, 3 (TA = 25°C)
2
Rating
90 1.11
Units
°C/W W
Note 2: Mounted on a demo board. Note 3: Derate 11.1 mW/°C above 25°C.
Recommended Operating Conditions
Symbol
VIN T
Description
Input Voltage Ambient Temperature Range
4
Rating
(VOUT+VDO) to 5.5 -40 to +85
Units
V °C
Note 4: To calculate minimum input voltage, use the following equation: VIN(MIN) = VOUT(MAX) + VDO(MAX) as long as VIN 2.5V.
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500mA MicroPowerTM LDO Electrical Characteristics3
(VIN=VOUT(NOM)+1.2V for VOUT options greater than 1.5V. VIN= 2.5 for VOUT1.5V. CIN=1µf, TA= -40 to 85°C unless otherwise noted. Typical values are TA=25°C) Symbol
VOUT IOUT VDO ISC IQ ISD VOUT/ VOUT*VIN VOUT(line) VOUT(load) tENDLY VEN(L) VEN(H) IEN PSRR TSD THYS eN TC
AAT3239
IOUT=1mA, COUT=2.2µF, Units
%
Description
Output Voltage Tolerance
Conditions
IOUT = 1mA to 300mA IOUT = 1mA to 500mA TA=25°C TA=-40 to 85°C TA=25°C TA=-40 to 85°C
Min Typ Max
-1.5 -2.5 -2.0 -3.5 500 1.5 2.5 2.0 3.5 400 600 0.8 1.2 600 70 125 1 0.09 2.5 100 120 15 0.6 1.5
Output Current Dropout Voltage 1, 2 Short Circuit Current Ground Current Shutdown Current Line Regulation Dynamic Line Regulation Dynamic Load Regulation Enable Delay Time Enable Threshold Low Enable Threshold High Leakage Current on Enable Pin Power Supply Rejection Ratio
VOUT > 1.2V IOUT = 300mA IOUT = 500mA VOUT < 0.4V VIN = 5V, No load, EN = VIN VIN = 5V, EN = 0V VIN = VOUT + 1 to 5.0V VIN = VOUT+1V to VOUT+2V, IOUT=500mA, TR/TF =2µs IOUT = 1mA to 300mA, TR<5µs IOUT = 1mA to 500mA, TR<5µs BYP = open
mA mV V mA µA µA %/V mV mV µs V V µA dB °C °C µVrms/rtHz ppm/°C
VEN = 5V 1 kHz IOUT=10mA, CBYP=10nF 10kHz 1MHz 67 47 45 145 12 50 22
1
Over Temp Shutdown Threshold Over Temp Shutdown Hysteresis Output Noise Noise Power BW = 300Hz-50kHz Output Voltage Temp. Coeff.
Notes: 1. VDO is defined as VIN - VOUT when VOUT is 98% of nominal. 2. For VOUT < 2.1V, VDO = 2.5V - VOUT. 3. The AAT 3239 is guaranteed to meet performance over the -40 to 85°C operating temperature range and are assured by design, characterization and correlation with statistical process controls.
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500mA MicroPowerTM LDO Typical Characteristics
AAT3239
(Unless otherwise noted, VIN = 5V, TA = 25°C) Dropout Voltage vs. Temperature
900 840 780 720 660 600 540 480 420 360 300 240 180 120 60 0 3.20
Dropout Characteristics
3.00 2.80
Dropout Voltage (mV)
IL = 500mA
IL = 400mA IL = 300mA
IOUT = 0mA
2.60
V OUT (V)
2.40 2.20 2.00 1.80 1.60
IOUT = 150mA IOUT = 100mA IOUT = 50mA IOUT = 10mA
2.80 2.90 3.00 3.10 3.20 3.30 3.40
IOUT = 500mA IOUT = 300mA
IL = 150mA
IL = 100mA
IL = 50mA
-40 -30 -20 -10 0
10 20 30 40
50 60 70 80 90 100 110 120
1.40 2.70 3.50 3.60 3.70
Temperature (°C)
VIN (V)
Dropout Voltage vs. Output Current
900 800
90 80 70 60
Ground Current vs. Input Voltage
Dropout Voltage (mV)
700
IGND (µA)
600 500 400 300 200 100 0 0 50 100 150 200 250 300 350 400 450 500
85°C 25°C -40°C
50 40 30 20 10 0 2 2.5 3 3.5
IOUT=500mA IOUT=0mA IOUT=10mA IOUT=50mA
4 4.5 5
IOUT=300mA IOUT=150mA
Output Current (mA)
VIN (V)
Quiescent Current vs. Temperature
100
Output Voltage vs. Temperature
1.203 1.202
Quiescent Current (µA)
90
Output Voltage (V)
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120
80 70 60 50 40 30 20 10 0
1.201 1.200 1.199 1.198 1.197 1.196 -40 -30 -20 -10
0
10 20
30
40
50 60
70 80
90 100
Temperature (°C)
Temperature (°C)
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