A6902D Datasheet PDF - STMicroelectronics

Description
The A6902D is a complete step down switching regulator with adjustable current limit. Based on a voltage mode structure it integrates an additional current error amplifier to implement both a constant voltage and constant current control.
The current limit programming is very simple and accurate (± 5%) selecting the proper sensing resistor.
The DC-DC converter can be used either as a voltage source with adjustable current limit (set by using the external sense resistor) or as current source to charge NiMH / NiCd batteries or drive voltage load like LEDs.
The internal P-Channel DMOS transistor (typ. RDSON 250 mΩ) assures high efficiency and minimum dropout even at high output current level.

FEATUREs
• Qualified following the AEC-Q100 requirements
• Up to 1 A DC output current
• Operating input voltage from 8 V to 36 V
• Output voltage adjustable from 1.235 V to 35 V
• Precise 3.3 V (±2 %) reference voltage
• 250 kHz Internally fixed frequency
• Voltage feedforward
• Zero-load current operation
• Internal current limiting
• Protection against feedback disconnection
• Thermal shutdown

APPLICATIONs
• Automotive applications
• Adjustable current generator
• Simple step-down converters with adjustable current limit