AAT1143IJS-1.5-T1 Advanced Analogic Technologies, Inc., AAT1143IJS-1.5-T1 Datasheet

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AAT1143IJS-1.5-T1

Manufacturer Part Number
AAT1143IJS-1.5-T1
Description
Manufacturer
Advanced Analogic Technologies, Inc.

Specifications of AAT1143IJS-1.5-T1

Date_code
05+
Packing_info
SO70JW-8

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AAT1143IJS-1.5-T1
Manufacturer:
MAXIM
Quantity:
100
General Description
The AAT1143 SwitchReg™ is a 1MHz step-down
converter with an input voltage range of 2.7V to
5.5V and output as low as 0.6V. Its low supply cur-
rent, small size, and high switching frequency
make the AAT1143 the ideal choice for portable
applications.
The AAT1143 is available in either a fixed version
with internal feedback or a programmable version
with external feedback resistors. It can deliver
400mA of load current while maintaining a low
25μA no load quiescent current. The 1MHz switch-
ing frequency minimizes the size of external com-
ponents while keeping switching losses low. The
AAT1143 feedback and control delivers excellent
load regulation and transient response with a small
output inductor and capacitor.
The AAT1143 is designed to maintain high efficien-
cy throughout the operating range, which is critical
for portable applications.
The AAT1143 is available in a space-saving
2.0x2.1mm SC70JW-8 package and is rated over
the -40°C to +85°C temperature range.
Typical Application (Fixed Output Voltage)
1143.2006.07.1.10
4.7μF
C2
V
IN
3
1
5
8
VIN
EN
AGND
PGND
U1
AAT1143
PGND
PGND
OUT
LX
4
2
7
6
4.7μH
L1
V
O
C1
4.7μF
1MHz 400mA Step-Down Converter
Features
Applications
100
95
90
85
80
75
70
65
60
0.1
V
V
— Fixed or Adjustable Version
25μA No Load Quiescent Current
Up to 95% Efficiency
400mA Max Output Current
1MHz Switching Frequency
Soft Start
Over-Temperature Protection
Current Limit Protection
100% Duty Cycle Low-Dropout Operation
0.1μA Shutdown Current
SC70JW-8 Package
Temperature Range: -40°C to +85°C
Cellular Phones
Digital Cameras
Handheld Instruments
Microprocessor / DSP Core / IO Power
PDAs and Handheld Computers
USB Devices
IN
OUT
Range: 2.7V to 5.5V
Adjustable Down to 0.6V
Efficiency vs. Load Current
1
(V
OUT
Output Current (mA)
= 2.5V; V
10
IN
SwitchReg
= 3.3V)
AAT1143
100
1000
1

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