AAT3215IGV-2.8-T1 AAT [Advanced Analog Technology, Inc.], AAT3215IGV-2.8-T1 Datasheet

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AAT3215IGV-2.8-T1

Manufacturer Part Number
AAT3215IGV-2.8-T1
Description
150mA CMOS High Performance LDO
Manufacturer
AAT [Advanced Analog Technology, Inc.]
Datasheet

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General Description
The AAT3215 MicroPower™ low dropout (LDO)
linear regulator is ideally suited for portable appli-
cations where low noise, extended battery life, and
small size are critical. The AAT3215 has been
specifically designed for very low output noise per-
formance, fast transient response, and high power
supply rejection ratio (PSRR), making it ideal for
powering sensitive RF circuits.
Other features include low quiescent current, typi-
cally 95µA, and low dropout voltage which is typi-
cally less than 140mV at full output current. The
device is output short-circuit protected and has a
thermal shutdown circuit for additional protection
under extreme conditions.
The AAT3215 also features a low-power shutdown
mode for extended battery life. A reference bypass
pin has been provided to improve PSRR perform-
ance and output noise by connecting an external
capacitor from the AAT3215's reference output to
ground.
The AAT3215 is available in a Pb-free, space-saving
5-pin SOT23 or 8-pin SC70JW package in ten fac-
tory-programmed voltages: 2.5V, 2.6V, 2.7V, 2.8V,
2.85V, 2.9V, 3.0V, 3.1V, 3.3V, or 3.6V.
Typical Application
3215.2006.05.1.6
V
GND
IN
ON/OFF
1μF
EN
IN
AAT3215
GND
150mA CMOS High Performance LDO
Features
Applications
OUT
BYP
Low Dropout: 140mV at 150mA
Guaranteed 150mA Output
High Accuracy ±1.5%
95µA Quiescent Current
High Power Supply Ripple Rejection
— 70dB at 1kHz
— 50dB at 10kHz
Very Low Self Noise: 45µVrms
Fast Line and Load Transient Response
Short-Circuit Protection
Over-Temperature Protection
Uses Low Equivalent Series Resistance
(ESR) Ceramic Capacitors
Noise Reduction Bypass Capacitor
Shutdown Mode for Longer Battery Life
Low Temperature Coefficient
Ten Factory-Programmed Output Voltages
SOT23 5-Pin or SC70JW 8-Pin Package
Bluetooth™ Headsets
Cellular Phones
Digital Cameras
Notebook Computers
Personal Portable Electronics
Portable Communication Devices
10nF
SmartSwitch
PowerLinear
2.2μF
AAT3215
V
GND
OUT
1

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AAT3215IGV-2.8-T1 Summary of contents

Page 1

General Description The AAT3215 MicroPower™ low dropout (LDO) linear regulator is ideally suited for portable appli- cations where low noise, extended battery life, and small size are critical. The AAT3215 has been specifically designed for very low output noise per- ...

Page 2

Pin Descriptions Pin # Symbol SOT23-5 SC70JW GND BYP OUT Pin Configuration SOT23-5 (Top View GND 150mA CMOS High ...

Page 3

Absolute Maximum Ratings T = 25°C, unless otherwise noted. A Symbol Description V Input Voltage IN V Maximum EN to Input Voltage ENIN(MAX Output Current OUT T Operating Junction Temperature Range J Thermal Information 2 Symbol Description Θ ...

Page 4

Electrical Characteristics 1V 1mA OUT(NOM) OUT wise noted. Typical values are T Symbol Description V Output Voltage Tolerance OUT I Output Current OUT V Dropout Voltage DO I Short-Circuit Current SC I ...

Page 5

Typical Characteristics Unless otherwise noted 5V Dropout Voltage vs. Temperature 200 180 I = 150mA L 160 140 I = 100mA L 120 100 -40 - Temperature ...

Page 6

Typical Characteristics Unless otherwise noted 5V On/Off Transient Response (No C Capacitor) BYP EN (2V/div) V (1V/div) OUT 10mA 150mA Time (100µs/div) Line Transient Response 3.04 3.03 3.02 3.01 3.00 2.99 2.98 Time (5µs/div) Short-Circuit Current ...

Page 7

Typical Characteristics Unless otherwise noted 5V Output Self Noise 500 0 10 100 1k 10k 100k Frequency (Hz) 3215.2006.05.1.6 150mA CMOS High Performance LDO = 25° 10m AAT3215 7 ...

Page 8

Functional Block Diagram IN EN BYP Functional Description The AAT3215 is intended for LDO regulator appli- cations where output current load requirements range from no load to 150mA. The advanced circuit design of the AAT3215 pro- vides excellent input-to-output isolation, ...

Page 9

Applications Information To assure the maximum possible performance is obtained from the AAT3215, please refer to the fol- lowing application recommendations. Input Capacitor Typically, a 1µF or larger capacitor is recommend- ed for C in most applications ...

Page 10

... These larger devices can improve circuit tran- sient response when compared to an equal value capacitor in a smaller package size. Consult capacitor vendor datasheets carefully when selecting capacitors for LDO regulators. Enable Function The AAT3215 features an LDO regulator enable/ disable function ...

Page 11

Conditions where V OUT should be avoided since this would forward bias the internal parasitic diode and allow excessive current flow into the V pin, possibly damaging OUT the LDO regulator. ...

Page 12

Thus, the AAT3215 can sustain a constant 2.5V out- put at a 150mA load current as long ambient temperature of 25°C. 6.0V is the absolute maximum voltage where an AAT3215 would never be operated, thus at ...

Page 13

... For example, a 2.5V system using a AAT3215IGV- 2.5-T1 operates at a continuous 100mA load cur- rent level and has short 150mA current peaks. The current peak occurs for 378µs out of a 4.61ms peri- od ...

Page 14

Figure 2 shows the preferred method for the bypass and output capacitor connections. For low output noise and highest possible power supply ripple rejection performance critical to connect the bypass and output capacitor directly to the LDO reg- ...

Page 15

Figure 3: Evaluation Board Component Side Layout. 3215.2006.05.1.6 150mA CMOS High Performance LDO Figure 4: Evaluation Board Figure 5: Evaluation Board Top Side Silk Screen Layout / Assembly Drawing. AAT3215 Solder Side Layout. 15 ...

Page 16

... XYY = assembly and date code. 2. Sample stock is generally held on part numbers listed in BOLD. 16 150mA CMOS High Performance LDO Marking Part Number (Tape and Reel) 1 BQXYY AAT3215IGV-2.5-T1 GKXYY AAT3215IGV-2.6-T1 CHXYY AAT3215IGV-2.7-T1 BSXYY AAT3215IGV-2.8-T1 CIXYY AAT3215IGV-2.85-T1 DVXYY AAT3215IGV-2.9-T1 BTXYY AAT3215IGV-3.0-T1 GJXYY AAT3215IGV-3.1-T1 BUXYY AAT3215IGV-3.3-T1 DVXYY AAT3215IGV-3.6-T1 BQXYY AAT3215IJS-2 ...

Page 17

Package Information 2.85 ± 0.15 1.90 BSC 0.95 BSC 0.60 REF 10° ± 5° 0.40 ± 0.10 0.50 BSC 0.50 BSC 0.50 BSC 2.00 ± 0.20 7° ± 3° All dimensions in millimeters. 3215.2006.05.1.6 150mA CMOS High Performance LDO SOT23-5 ...

Page 18

Advanced Analogic Technologies, Inc. AnalogicTech cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in an AnalogicTech product. No circuit patent licenses, copyrights, mask work rights, or other intellectual property rights are implied. AnalogicTech reserves ...

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