AAT1149IUV-0.6-T1 Advanced Analogic Technologies, Inc., AAT1149IUV-0.6-T1 Datasheet

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AAT1149IUV-0.6-T1

Manufacturer Part Number
AAT1149IUV-0.6-T1
Description
Manufacturer
Advanced Analogic Technologies, Inc.

Specifications of AAT1149IUV-0.6-T1

Date_code
10+
Packing_info
CSP

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AAT1149IUV-0.6-T1
Manufacturer:
ANALOGIC
Quantity:
20 000
General Description
The AAT1149 SwitchReg is a 3.0MHz step-down con-
verter with an input voltage range of 2.7V to 5.5V and
output voltage as low as 1.0V. It is optimized to react
quickly to load variations and operate with a tiny 0603
inductor that is only 1mm tall.
The AAT1149 output voltage is programmable via exter-
nal feedback resistors. It can deliver 400mA of load cur-
rent while maintaining a low 45μA no load quiescent
current. The 3.0MHz switching frequency minimizes the
size of external components while keeping switching
losses low.
The AAT1149 maintains high efficiency throughout
the operating range, which is critical for portable
applications.
The AAT1149 is available in a Pb-free, space-saving
2.0x2.1mm SC70JW-8 package or a 5-pin wafer-level
chip scale (WLCSP) package and is rated over the -40°C
to +85°C temperature range.
Typical Application
1149.2008.01.1.2
SwitchReg
TM
4.7µF
C2
V
IN
= 3.6V
w w w . a n a l o g i c t e c h . c o m
3MHz Fast Transient 400mA Step-Down Converter
IN
EN
AGND
PGND
U1
AAT1149
PGND
PGND
Features
• Ultra-Small 0603 Inductor (Height = 1mm)
• V
• V
• 400mA Max Output Current
• Up to 98% Efficiency
• 45μA No Load Quiescent Current
• 3.0MHz Switching Frequency
• 70μs Soft Start
• Fast Load Transient
• Over-Temperature Protection
• Current Limit Protection
• 100% Duty Cycle Low-Dropout Operation
• <1μA Shutdown Current
• SC70JW-8 or 0.9x1.2mm WLCSP Package
• Temperature Range: -40°C to +85°C
Applications
• Cellular Phones
• Digital Cameras
• Handheld Instruments
• Microprocessor / DSP Core / IO Power
• PDAs and Handheld Computers
• USB Devices
FB
LX
IN
OUT
Range: 2.7V to 5.5V
Adjustable from 1.0V to V
L1 1.8µH
R2
59k
118k
V
R1
PRODUCT DATASHEET
OUT
= 1.8V
C1
4.7µF
AAT1 149
IN
1

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