as1353 austriamicrosystems, as1353 Datasheet

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as1353

Manufacturer Part Number
as1353
Description
150ma Low Dropout Regulator, Reverse Battery Protection, Low Noise Bypass Pin
Manufacturer
austriamicrosystems
Datasheet

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A S 1 3 5 3
L i n e a r L o w - D r o p o u t 1 5 0 m A Vo l ta g e R e g u l a t o r s
1 General Description
The AS1353/AS1356 are high-performance, fixed-volt-
age linear LDOs designed for use with capacitors of 1 to
10µF. The devices can deliver superior performance
even under low dropout conditions when the power tran-
sistor operates in linear mode.
The integrated P-channel MOSFET output allows the
devices to maintain a low supply-current at loads of up
to150mA. A shutdown mode includes logic-controlled
circuitry which reduces shutdown current to less than
1µA (max).
Integrated over-temperature and over-current protec-
tion circuitry switches the devices off in case of thermal
overload or output short-circuit conditions.
The AS1353/AS1356 are optimized for low equivalent-
series resistance (ESR) output capacitors. Additionally,
all devices contain reversed battery protection which dis-
connects the internal circuitry and parasitic diodes if the
battery is connected incorrectly.
The AS1356 also features power-OK circuitry which can
be used to monitor output regulation.
All devices also feature an integrated error amplifier and
built-in 1.25V reference, and output current is limited
(380mA typ) via the on-chip current limiting circuitry.
Multiple output voltages are available as standard prod-
ucts: 3.6, 3.3, 3.0, 2.7, 2.5, or 1.5V. All devices are avail-
able in a 5-pin SOT23 package.
Figure 1. Pinout and Application Diagrams
www.austriamicrosystems.com
On
Off
+2.5 to
+5.5V
0.01µF
C
BP
SHDNM
1µF
C
GND
IN
,
IN
A S 1 3 5 6
1
2
3
SHDNM
IN
BP
AS1353
AS1353
GND
OUT
4
5
BP
OUT
C
1µF
OUT
Preset Output
1.5 to 3.6V,
150mA
Revision 1.03
2 Key Features
3 Applications
The devices are ideal for powering cordless and mobile
phones, MP3 players, CD and DVD players, PDAs,
handheld computers, digital cameras, and any other
hand-held and/or battery-powered device.
On
Off
!
!
!
!
!
!
!
!
!
!
!
!
+2.5 to
+5.5V
Ultra-Low Dropout Voltage: 40mV @ 100mA load
Output Voltage Range: +1.5 to +3.6V (100mV steps)
Max Output Current: 150mA
Output Voltage Accuracy: ±1%
Low Shutdown Current: 1µA
High PSRR: 60dB at 100Hz
Integrated Overtemperature/Overcurrent Protection
Reverse-Battery Protection (AS1353/AS1356)
Power-OK Output (AS1356)
Minimal External Components Required
Operating Temperature Range: -40 to +85°C
5-pin SOT23 Package
SHDNM
1µF
C
GND
IN
IN
1
2
3
SHDNM
GND
IN
AS1356
AS1356
OUT
POK
4
5
POK
OUT
100kΩ
C
1µF
OUT
Preset Output
1.5 to 3.6V,
processor
To Micro-
150mA
D a t a S h e e t
1 - 13

Related parts for as1353

as1353 Summary of contents

Page 1

... Integrated over-temperature and over-current protec- tion circuitry switches the devices off in case of thermal overload or output short-circuit conditions. The AS1353/AS1356 are optimized for low equivalent- series resistance (ESR) output capacitors. Additionally, all devices contain reversed battery protection which dis- connects the internal circuitry and parasitic diodes if the battery is connected incorrectly ...

Page 2

... AS1353/AS1356 Data Sheet - Pinout Pin Assignments Figure 2. Pin Assignments (Top View AS1353 GND 2 3 SHDNM Pin Descriptions Table 1. AS1353 Pin Descriptions Pin Number Pin Name GND 3 SHDNM OUT Table 2. AS1356 Pin Descriptions Pin Number Pin Name ...

Page 3

... AS1353/AS1356 Data Sheet - Absolute Maximum Ratings Stresses beyond those listed in Table 3 may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in Section 6 Electrical Characteristics on page 4 is not implied ...

Page 4

... OUT OUT C = 1µF, OUT f = 10Hz to 100kHz, AS1353 C = 0.01µ 1µF, OUT AS1356 f = 10Hz to 100kHz f = 100Hz 1µF, OUT (C = 0.01µF, AS1353 0.01µF, no load BP (AS1353 +25ºC AMB SHDNM = GND T = +85ºC AMB V = 2 +25ºC AMB SHDNM = IN or GND T = +85º ...

Page 5

... AS1353/AS1356 Data Sheet - Dropout voltage = when V IN OUT ≥ 2.5V). 2. The rise and fall time of the shutdown signal must not exceed 1ms. 3. The delay time is defined as time required to set V 4 ...

Page 6

... AS1353/AS1356 Data Sheet - Typical Operating Characteristics V = +3. +3.6V OUT , IN IN OUT Figure 3. Ground Pin Current vs. Input Voltage 140 120 I = 150mA OUT 100 I = 0mA OUT ...

Page 7

... AS1353/AS1356 Data Sheet - Figure 9. Dropout Voltage vs. Output Load 150 125 100 75 +85° 100 Output Load (mA) Figure 11. Line Transient Response; I 10ms/Div www.austriamicrosystems.com Figure 10. PSRR vs. Frequency ...

Page 8

... Detailed Description The AS1353/AS1356 are low-dropout, low-quiescent-current linear regulators intended for LDO regulator applications where output current load requirements range from no load to 150mA. All devices come standard with fixed output volt- ages of 1 ...

Page 9

... If the junction temperature exceeds 165ºC (typ, AS1356) or 150ºC (typ, AS1353), the thermal sensor starts the shut- down logic, at which point the P-channel MOSFET is switched off. After the device temperature has dropped by approximately 20º ...

Page 10

... Power Supply Rejection Ratio The AS1353/AS1356 are designed to deliver low dropout voltages and low quiescent currents. Power-supply rejection is 60dB (typ) at low frequencies. To improve power supply-noise rejection and transient response, increase the values of the input and output bypass capacitors (see Figure 13) ...

Page 11

... AS1353/AS1356 Data Sheet - Package Drawings and Markings The AS1353/AS1356 are available in a 5-pin SOT23 package. Figure 14. 5-pin SOT23 Package Notes: 1. All dimensions in millimeters. 2. Foot length measured at intercept point between datum A and lead surface ...

Page 12

... LDO 150mA, Reverse-Battery Protection, 1.5V AS1353-18-T ASD9 LDO 150mA, Reverse-Battery Protection, 1.8V AS1353-26-T ASHB LDO 150mA, Reverse-Battery Protection, 2.6V AS1353-28-T ASHC LDO 150mA, Reverse-Battery Protection, 2.8V AS1353-30-T ASHD LDO 150mA, Reverse-Battery Protection, 3.0V AS1353-33-T ASHE LDO 150mA, Reverse-Battery Protection, 3.3V AS1353-36-T ASI8 LDO 150mA, Reverse-Battery Protection, 3.6V LDO 150mA, Reverse-Battery Protection,with ...

Page 13

... AS1353/AS1356 Data Sheet Copyrights Copyright © 1997-2007, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted, merged, trans- lated, stored, or used without the prior written consent of the copyright owner. All products and companies mentioned are trademarks or registered trademarks of their respective companies. ...

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