L6902D013TR

STMICROELECTRONICS  L6902D013TR  直流-直流开关降压逐步递减稳压器, 可调, 8V-36V输入, 1.235V-34V输出, 1A输出, SOIC-8

The is a complete and simple step-down Switching Regulator with adjustable current limit. Based on a voltage-mode structure it integrates a current error amplifier to have a constant voltage and constant current control. By means of an on board current sense resistor and the availability of the current sense pins both compatible to Vcc and for Cs- compatible with GND too a current limit programming is very simple and accurate ±5%. Moreover constant current control can be used to charge NiMH and NiCd batteries. The device can be used as a standard DC/DC converter with adjustable current limit set by using the external sense resistor. The internal robust P-channel DMOS transistor with a typical of 250mR assures high efficiency and a minimum dropout even at high output current level. The internal limiting current latched function of typical value of 2.5A protects the device from accidental output short-circuit avoiding dangerous loads damage.

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Voltage feed-forward

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Zero load current operation

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Adjustable current limit

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Protection against feedback disconnection

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Thermal shutdown

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Overvoltage and frequency foldback overcurrent protection

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Precise 3.3V ±2% reference voltage

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5% Output current accuracy