BL8523
PWM/PFM Step-down DC-DC Controller
DESCRIPTION
FEATURES
The BL8523 is a
CMOS-based PWM step-down DC-DC Controller.
The device offers the following advantages: lower supply current and wider operating input-
voltage range.
The BL8523 consists of an oscillator, a PWM control circuit, a reference
voltage unit, an error amplifier, a soft-start circuit, a protection circuit, a PWM/PFM alternative circuit, a Chip Enable circuit, and under
voltage lockout circuit.
A low ripple, high efficiency step-down DC-DC converter can be easily composed of this IC.
Output
Voltage can be adjusted with external resistors.
Range of Input
Voltage: 3V~16V Built-in Soft-start Function and Protection
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