IC-DC

www.DataSheet.co.kr iC-DC preliminary Rev A3, Page 1/19 2-CHANNEL BUCK/BOOST DC/DC CONVERTER FEATURES o o o o Wide input voltage range of +4 to +36 V Reverse polarity protection up to -36 V with autarky function Universal buck/boost converter with high efficiency Two back-end, adjustable linear regulators (1.5 V to 5.5 V) with a total of up to 300 mA of output current and a separate output voltage monitor Low residual ripple with small capacitors in the µF range Separate enable inputs for the linear regulators Two switched linear regulator outputs Integrated switching transistors and flyback diodes Converter cut-off current can be set by an external resistor Integrated 3 MHz oscillator with no external components Active noise spectrum reduction Error messaging with overtemperature, overvoltage, and undervoltage at the current-limited open-collector output Wide temperature range of -40 °C to 125 °C Protective circuitry against ESD Space saving 24-pin QFN package APPLICATIONS o Dual voltage supply by buck/boost converters with adjustable, back-end linear regulators o Power management for laser, encoder, and automotive applications o o o o o o o o o o o PACKAGES QFN24 4 mm x 4 mm (RoHS compliant) BLOCK DIAGRAM LVBH 4...36V CVB 1μF VB CVBR 10μF VBR 22μH VBL VHL VH REVERSE PROTECT. INTERNAL SUPPLY CVH 3.3μF VH1 VBROK NAUT TOK VOLTAGE MONITOR AUTARKY DETECT. THERMAL SHUTDOWN ERROR DETECT. VCC1 BUCK 1 CVH1 3.3μF 1.5...5.5V CVCC1 1μF POE1 SUPPLY SWITCH 1 BOOST 1 LIN...