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HM9266 Datasheet - HMSEMI

Part Name
Description
MFG CO.
HM9266
HMSEMI
Shenzhen Huazhimei Semiconductor Co., Ltd HMSEMI
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DESCRIPTION
HM9266 is a small-size and high-efficiency boost DC/DC converter with a minimum start-up voltage of less than 1V. It adopts adaptive current mode PWM control. 制环。 System loop. HM9266 includes error amplifier, ramp generator, comparator, power switch and driver. HM9266 can operate at a wide load current Stable and efficient work within the range, and does not require any external compensation circuit. The startup voltage of HM9266 can be lower than 1V, so it can meet the application of single-cell dry battery. HM9266 contains a 2A power switch inside, The maximum output current can reach 300mA when the battery is powered, and the HM9266 also provides a driver for driving external power devices (NMOS or NPN) Port to expand the output current when the application requires more load current. The 500KHz switching frequency can reduce the size of external components. Output The voltage is set by two external resistors. The low quiescent current of 14μA, coupled with high efficiency, can make the battery last longer.

Features
● Low static (switch off state) working current: 14μA
● Low starting input voltage: 0.8V typical
● High power supply capacity: one alkaline battery provides 3.3V 100mA; one lithium battery provides 5V 300mA
● Zero working current in off state
● High efficiency: 90%
● Fixed switching frequency: 500KHz
● Optional internal or external power tube switch
● Package form: SOT23-6

 

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