AAT1275ITP-5.0-T1 Advanced Analogic Technologies, Inc., AAT1275ITP-5.0-T1 Datasheet
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AAT1275ITP-5.0-T1
Manufacturer Part Number
AAT1275ITP-5.0-T1
Description
Manufacturer
Advanced Analogic Technologies, Inc.
Datasheets
1.AAT1275ITP-5.0-T1.pdf
(19 pages)
2.AAT1275ITP-5.0-T1.pdf
(19 pages)
3.AAT1275ITP-5.0-T1.pdf
(19 pages)
4.AAT1275ITP-5.0-T1.pdf
(19 pages)
Specifications of AAT1275ITP-5.0-T1
Date_code
07+
Packing_info
TSOPJW-12
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AAT1275ITP-5.0-T1
Manufacturer:
ANALOGIC
Quantity:
761
Part Number:
AAT1275ITP-5.0-T1
Manufacturer:
ANALOGIC
Quantity:
20 000
General Description
The AAT1275 SwitchReg is a 2MHz, 500mA syn-
chronous boost converter with an integrated current-
limiting load switch controlled output. The AAT1275
operates from a single-cell Lithium-ion/ polymer bat-
tery source and provides a regulated 5V, current
limit controlled output to support USB port V
applications in portable consumer electronic prod-
ucts. The AAT1275 can support both USB 2.0 host
port and USB on-the-go operation, as well as gen-
eral purpose applications where a 5V supply with a
user programmable current limit is needed.
The high efficiency boost converter section of the
AAT1275 is typically set for a 5V output and can
deliver up to 500mA load current to support USB
V
2.7V. The high boost converter switching frequen-
cy (up to 2.0MHz) provides fast load transient and
allows the use of small external components. Fully
integrated control circuitry simplifies system design
and reduces total solution size.
The integrated, programmable current limiting load
switch provides USB port protection for portable
devices allowing the AAT1275 to supply a 5V USB
V
active low fault flag to alert the system in the event
of an over-current condition applied to the
AAT1275 output.
The AAT1275 is available in the Pb-free, space-
saving 12-pin TSOPJW and 16-pin TDFN34 pack-
ages and is rated over the -40°C to +85°C operat-
ing temperature range.
1275.2007.01.1.3
Typical Application
BUS
BUS
up to 500mA. The load switch provides an
operation from an input supply as low as
V
Enable
IN
Fault
C
4.7µF
IN
R
10k
SET
IN
VCC
FLT
EN
SET
BUS
Boost Converter with USB Power Switch
LIN
AAT1275
L1 2.2µH
GND
SW
Features
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Applications
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OUT1
OUT2
FB
High Frequency Boost With 5V / 500mA
Output Capability From a Single-Cell Lithium-
Ion/Polymer Battery
Input Voltage Range: 2.7V to 5V
V
>90% Efficiency
Up to 2MHz Switching Frequency
True Load Disconnect
Load Switch With Programmable Current Limit
Over-Temperature, Over-Current Protection
Inrush Current Limit
Fault Report
Low Shutdown Current < 1µA Typical
-40°C to +85°C Temperature Range
TSOPJW-12 and TDFN34-16 Packages
USB On-the-Go
Cell Phones
Digital Still Cameras
PDAs and Portable Media Players
Smart Phones
Other Hand-Held Devices
OUT1
Adjustable or Fixed (5V)
R
432k
R
59k
FB1
FB2
C
1µF
OUT2
C
4.7µF
OUT1
V
BUS
Output
SwitchReg
AAT1275
™
1