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IT7831 データシート PDF ( 特性, スペック, ピン接続図 )

部品番号 IT7831
部品説明 5V/1A High Efficiency Synchronous Step-Down DC/DC Converter
メーカ M3TEK
ロゴ M3TEK ロゴ 

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IT7831 Datasheet, IT7831 PDF,ピン配置, 機能
M3TEK
IT7831
5V/1A High Efficiency Synchronous Step-Down DC/DC Converter
Description
The IT7831 is a high efficiency step-down
DC/DC converter using a constant frequency,
current mode architecture. The device
integrates a main switch and a synchronous
rectifier for high efficiency without an external
schottky diode. The supply current during
operation is only 190µA and drops to < 1µA
after shutdown. The IT7831 can supply 1A of
load current from 2.5V to 6.0V input voltage.
The output voltage can be regulated as low as
0.6V. The switching frequency is internally set
at 1.2MHz, allowing the use of small surface
mount inductors and capacitor. The IT7831 is
available in a low profile TSOT23_5L and
SOT23_5L package.
Features
High Efficiency up to 95%
2.5V to 6.0V Input Voltage Range
1A Output Current
1.2MHZ Oscillator Frequency Operation
Allowable 0.6V Low Output Voltage
Current Mode Operation
Internal Soft-start
Over-temperature Protection
0.1µA Shutdown Current
SOT235 and TSOT235 Small Package
Adjustable from 0.6V to Vin
RoHS Compliant (100% Green Available)
Power Saving Mode
Applications
PDA and Smart Phone
MP3 Player
Microprocessor and DSP Core Supply
Wireless and DSL Card
Portable Device
Typical Applications
Rev. 0.2.6
www.m3tekic.com
Figure 1. Typical Application Circuit
M3tekic Confidential
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