Description
Maxim Integrated MAX15000AEUB+ Boost, Flyback Regulator Positive, Isolation Capable Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 10-uMAX
- Current-Mode Control
- Programmable Switching Frequency Up to 625kHz
- Accurate UVLO Threshold (1%)
- Open-Drain UVLO Flag Output with Internal Delay
- 36V to 72V Telecom Voltage Range
- Universal Offline Input Voltage Range
The MAX15000/MAX15001 current-mode PWM con- trollers contain all the control circuitry required for the design of wide-input-voltage isolated and nonisolated power supplies. The MAX15000 is well suited for uni- versal input (rectified 85VAC to 265VAC) or telecom (-36VDC to -72VDC) power supplies. The MAX15001 is well suited for low input voltage (9.5VDC to 24VDC) power supplies.
The MAX15000/MAX15001 contain an internal error amplifier that regulates the tertiary winding output volt- age which is used in primary-side-regulated isolated power supplies. Primary-side regulation eliminates the need for an optocoupler. An input undervoltage lockout (UVLO) is provided for programming the input-supply start voltage and to ensure proper operation during brownout conditions. An open-drain UVLO flag output, with 210μs internal delay, allows the sequencing of a secondary-side controller. The input-supply start volt- age is externally programmable with a voltage-divider. A UVLO/EN input is used to shutdown the MAX15000/ MAX15001. Internal digital soft-start eliminates output voltage overshoot.
Manufacturer:Maxim
Datasheet:Others/MAX15000-MAX15001.pdf
