AAT3221IJS-3.3-T1 Advanced Analogic Technologies, Inc., AAT3221IJS-3.3-T1 Datasheet

AAT3221IJS-3.3-T1

Manufacturer Part Number

AAT3221IJS-3.3-T1

Description

Manufacturer

Advanced Analogic Technologies, Inc.

Datasheet

1.AAT3221IJS-3.3-T1.pdf (16 pages)

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Bonase Electronics (HK) Co., Limited

Part Number:

AAT3221IJS-3.3-T1

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General Description

The AAT3221 and AAT3222 PowerLinear NanoPower low

dropout (LDO) linear regulators are ideal for portable

applications where extended battery life is critical.

These devices feature extremely low quiescent current,

typically 1.1μA. Dropout voltage is also very low, typi-

cally less than 200mV at the maximum output current of

150mA. The AAT3221/2 have an enable pin feature

which, when asserted, will enter the LDO regulator into

shutdown mode, removing power from its load and offer-

ing extended power conservation capabilities for portable

battery-powered applications.

The AAT3221/2 have output short-circuit and over-cur-

rent protection. In addition, the devices also have an

over-temperature protection circuit, which will shut

down the LDO regulator during extended over-current

events.

active low enable input.

The AAT3221 and AAT3222 are available in Pb-free,

space-saving 5-pin SOT23 packages.

also available in a Pb-free, 8-pin SC70JW package. The

device is rated over the -40°C to +85°C temperature

range. Since only a small, 1μF ceramic output capacitor

is recommended, often the only space used is that occu-

pied by the AAT3221/2 itself. The AAT3221/2 provide a

compact and cost-effective voltage conversion solution.

The AAT3221 and AAT3122 are similar to the AAT3220,

with the exception that they offer further power savings

with an enable pin.

Typical Application

PowerLinear

3221.2007.11.1.12

The devices are available with active high or

INPUT

GND

1μF

(ENABLE)

ENABLE

The AAT3221 is

w w w . a n a l o g i c t e c h . c o m

(EN)

AAT3221/2

GND

150mA NanoPower™ LDO Linear Regulator

Features

• 1.1μA Quiescent Current

• Low Dropout: 200mV (typical)

• Guaranteed 150mA Output

• High Accuracy: ±2%

• Current Limit Protection

• Over-Temperature Protection

• Extremely Low Power Shutdown Mode

• Low Temperature Coefficient

• Factory-Programmed Output Voltages

• Stable Operation With Virtually Any Output Capacitor

• Active High or Low Enable Pin

• 4kV ESD

• 5-Pin SOT23 or 8-Pin SC70JW Package

• -40°C to +85°C Temperature Range

Applications

• Cellular Phones

• Digital Cameras

• Handheld Electronics

• Notebook Computers

• PDAs

• Portable Communication Devices

• Remote Controls

▪ 1.5V to 3.5V

Type

OUT

1μF

OUT

PRODUCT DATASHEET

AAT3221/2

OUTPUT

GND

Related parts for AAT3221IJS-3.3-T1

AAT3221IJS-3.3-T1 Summary of contents

Page 1

PowerLinear TM General Description The AAT3221 and AAT3222 PowerLinear NanoPower low dropout (LDO) linear regulators are ideal for portable applications where extended battery life is critical. These devices feature extremely low quiescent current, typically 1.1μA. Dropout voltage is also very ...

Page 2

PowerLinear PowerLinear TM TM Pin Descriptions Pin # AAT3221 AAT3222 SOT23-5 SC70JW Pin Configuration AAT3221 SOT23-5 (Top View) IN OUT 1 5 ...

Page 3

PowerLinear PowerLinear TM TM Absolute Maximum Ratings T = 25°C, unless otherwise noted. A Symbol Description V Input Voltage, <30ms, 10% DC (continuous max = 6.0V (EN) to GND Voltage EN V Maximum EN (EN) to Input ...

Page 4

PowerLinear PowerLinear TM TM Electrical Characteristics 1V 1mA OUT(NOM) OUT OUT Symbol Description V DC Output Voltage Tolerance OUT I Output Current OUT I Short-Circuit Current SC I Ground Current Q I ...

Page 5

PowerLinear PowerLinear TM TM Typical Characteristics Unless otherwise noted 1V OUT Output Voltage vs. Output Current 3.03 3.02 3.01 3 25°C 2.99 80°C 2.98 2. Output Current (mA) Output Voltage ...

Page 6

PowerLinear PowerLinear TM TM Typical Characteristics Unless otherwise noted OUT Noise Spectrum -10 -20 -30 1.E+01 1.E+02 1.E+03 1.E+04 Frequency (Hz) Line Response with 10mA Load 3.8 3.6 Input 3.4 3.2 3 ...

Page 7

PowerLinear PowerLinear TM TM Typical Characteristics Unless otherwise noted 1V OUT Power-Up with 1mA Load 4 3 Enable 2 1 Output Time (ms) Power-Up with 10mA Load 4 3 Enable ...

Page 8

PowerLinear TM Functional Block Diagram IN EN Functional Description The AAT3221 and AAT3222 are intended for LDO regula- tor applications where output current load requirements range from no load to 150mA. The advanced circuit design of the AAT3221/2 has been ...

Page 9

PowerLinear TM Applications Information To ensure that the maximum possible performance is obtained from the AAT3221/2, please refer to the follow- ing application recommendations. Input Capacitor A 1μF or larger capacitor is typically recommended for C in most applications. A ...

Page 10

PowerLinear TM X7R, X5R, Z5U, and Y5V dielectric materials. ceramic capacitors, typically greater than 2.2μF, are often available in low-cost Y5V and Z5U dielectrics. These two material types are not recommended for use with LDO regulators since the capacitor tolerance ...

Page 11

PowerLinear TM maximum conditions are calculated at the maximum operating temperature where T = 85°C, under normal A ambient conditions T = 25°C. Given T A maximum package power dissipation is 267mW 25°C, the maximum package power dissipation ...

Page 12

PowerLinear TM For a 150mA output current and a 2.5 volt drop across the AAT3221 ambient temperature of 85°C, the maximum on-time duty cycle for the device would be 71.2%. The following family of curves shows the safe ...

Page 13

PowerLinear TM The power dissipation for a 150mA load occurring for 8.2% of the duty cycle will be 20.9mW. Finally, the two power dissipation levels can summed to determine the total true power dissipation under the varied load ...

Page 14

... AAT3221IGV-2.85-T1 AAT3221IGV-2.9-T1 AAT3221IGV-3.0-T1 AAT3221IGV-3.1-T1 AAT3221IGV-3.3-T1 AAT3221IGV-3.5-T1 AAT3221IJS-1.5-T1 AAT3221IJS-1.6-T1 AAT3221IJS-1.7-T1 AAT3221IJS-1.8-T1 AAT3221IJS-1.9-T1 AAT3221IJS-2.0-T1 AAT3221IJS-2.3-T1 AAT3221IJS-2.4-T1 AAT3221IJS-2.5-T1 AAT3221IJS-2.6-T1 AAT3221IJS-2.7-T1 AAT3221IJS-2.8-T1 AAT3221IJS-2.85-T1 AAT3221IJS-2.9-T1 AAT3221IJS-3.0-T1 AAT3221IJS-3.1-T1 AAT3221IJS-3.2-T1 AAT3221IJS-3.3-T1 AAT3221IJS-3.5-T1 AAT3222IGV-1.8-T1 AAT3222IGV-2.0-T1 AAT3222IGV-2.3-T1 AAT3222IGV-2.4-T1 AAT3222IGV-2.5-T1 AAT3222IGV-2.7-T1 AAT3222IGV-2.8-T1 AAT3222IGV-2.85-T1 AAT3222IGV-2.9-T1 AAT3222IGV-3.0-T1 AAT3222IGV-3.3-T1 AAT3222IGV-3.5-T1 AAT3221IGV-2.8-2 T1 AAT3221IGV-3.3-2-T1 3221.2007.11.1.12 3221.2007.11.1.12 ...

Page 15

PowerLinear PowerLinear TM TM All AnalogicTech products are offered in Pb-free packaging. The term “Pb-free” means semiconductor products that are in compliance with current RoHS standards, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. For ...

Page 16

... Phone (408) 737-4600 Fax (408) 737-4611 © 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 the right to make changes to their products or speciﬁ cations or to discontinue any product or service without notice. Except as provided in AnalogicTech’s terms and conditions of sale, AnalogicTech assumes no liability whatsoever, and AnalogicTech disclaims any express or implied warranty relating to the sale and/or use of AnalogicTech products including liability or warranties relating to ﬁ ...

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