AAT1265 반도체 회로 부품 판매점
Step-Up DC/DC Converter
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 AAT |
AAT1265
Low Voltage 2MHz Step-Up DC/DC
Converter in SC70JW Package
General Description
Features
SwitchReg™
The AAT1265 is a member of Analogic Tech's Total
• 100mA Output from a Single AA Cell Input
Power Management IC™ (TPMIC™) product family
• 250mA Output from a Dual AA Cell Input
and is designed for single-cell or dual-cell alkaline,
NiMH, or NiCd battery-powered applications. It is a
• VIN Operation Range: 0.8V to VOUT
• Up to 93% Efficiency
high efficiency, synchronous, fixed frequency, step-
• Low Start-Up Voltage: 1.0V Typical
up converter with true output disconnect during
• Internal Synchronous Rectifier
shutdown (<1.0µA), start-up inrush current limit, and
• Current Mode Control with Internal Feedback
short-circuit protection.
and Compensation
The high 2MHz switching frequency and completely
integrated control circuitry minimize the total solution
footprint area while maintaining excellent regulation,
ripple, and transient response throughout the full
load range.
• 2MHz Fixed Switching Frequency
• 1A Current Limit
• Maintains High Efficiency Over the Output
Current Range for Improved Battery Life
• Low 40µA No Load Bias Current
• True Load Disconnect
Light load switching frequency modulation and low
• Short-Circuit and Over-Current Protection
quiescent current maintain high efficiency perform-
• Inrush Current Limit and Soft Start
ance for light load and sleep mode conditions.
• Low Shutdown Current: <1.0µA
With a 1A peak switch current limit, the AAT1265 is
capable of delivering 100mA to a 3.3V load with a
• -40°C to +85°C Temperature Range
• 2.0x2.1mm SC70JW-8 Package
single AA cell or up to 250mA from a dual AA cell.
The device has a 1.0V start-up voltage with opera-
tion down to 0.8V.
Applicationswww.DataSheet4U.com
The AAT1265 is available in a Pb-free, space-sav-
ing 2.0x2.1mm 8-pin SC70JW package and is
• Bluetooth™ Headsets
rated over the -40°C to +85°C temperature range.
• Digital Cameras
• Medical Instruments
• Mobile Handsets
• MP3 and Portable Music Players
Typical Application
VIN
2.2µH
4.7µF
AAT1265
LX VCC
VOUT
VIN OUT
EN GND
4.7µF
1265.2006.05.1.1
100
90
80
70
60
50
0.1
Dual-Cell to 3.3V Efficiency
vs. Output Current
VIN = 3.0V
VIN = 2.4V VIN = 2.0V
1.0
10.0
100.0
Output Current (mA)
1000.0
1
AAT1265
Low Voltage 2MHz Step-Up DC/DC
Converter in SC70JW Package
Pin Descriptions
Pin #
1
2
Symbol
VCC
EN
3 VIN
4 LX
5 OUT
6, 7, 8
GND
Function
Bias supply voltage after start-up and feedback to the output voltage error amplifier.
Enable pin. Logic high enables the IC. Logic low disables the IC and disconnects the
load from the input. Shutdown current is <1µA.
Battery input voltage. Supplies the IC at start-up.
Inductor connection. Ties to the drains of the P-channel synchronous rectifier and the
N-channel MOSFET switch.
Boost converter output voltage; connects to the P-channel synchronous MOSFET
source. Bypass with ceramic capacitor to GND.
Signal and power ground. Connect output capacitor return.
Pin Configuration
SC70JW-8
(Top View)
VCC
EN
VIN
LX
1
2
3
4
8 GND
7 GND
6 GND
5 OUT
2 1265.2006.05.1.1
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제조업체: AAT
( aat )
AAT1265 converter
데이터시트 다운로드 :
[ AAT1265.PDF ]
[ AAT1265 다른 제조사 검색 ]
국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
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( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
