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IC-DC Datasheet(PDF) 1 Page - IC-Haus GmbH |
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IC-DC Datasheet(HTML) 1 Page - IC-Haus GmbH |
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1 / 19 page  iC-DC 2-CHANNEL BUCK/BOOST DC/DC CONVERTER Rev B1, Page 1/19 FEATURES • 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 105 °C • Protective circuitry against ESD • Space saving 24-pin QFN package APPLICATIONS • Dual voltage supply by buck/boost converters with adjustable, back-end linear regulators • Power management for laser, encoder, and automotive applications PACKAGES QFN24 4 mm x 4 mm (RoHS compliant) BLOCK DIAGRAM VOLTAGE ENABLE R2 R3 R4 OUTPUT SWITCH 2 5V/3.3V/R1:R2 VCC1: VCC2: SWITCH 1 VOLTAGE MONITOR PROTECT. SUPPLY THERMAL SHUTDOWN BUCK SUPPLY SUPPLY LIN.-REG.1 LIN.-REG.2 CONTROL MONITORING REFERENCE BIAS BOOST SWITCHING REGULATOR 3.3V/2.5V/R3:R4 R1 OSCILLATOR iC-DC ERROR DETECT. AUTARKY DETECT. REVERSE INTERNAL CONFIGURATION 20k RREF 1μF CVB CVBR 10μF 2 1 2 LVBH 22μH CVH1 3.3μF 3.3μF CVH 1μF CVCC2 CVCC1 1μF 3.3μF CVH2 & 1 2 1 VCC1 RREF VCC1,VCC2 TEST V1OK V2OK VCC2 POE2 TOK VBROK VH1 VCC1 VCC2 GND VBR VBL VHL VH GNDA VB CFG1 CFG2 ENV1 ENV2 NAUT 4...36V 1.5...5.5V 1.5...5.5V VH2 POE1 RREF 20k CVB 1μF 10μF CVBR LVBH 22μH CVCC2 1μF 1μF CVCC1 CVH2 3.3μF 3.3μF CVH1 CVH 3.3μF & Copyright © 2011, 2017 iC-Haus http://www.ichaus.com |
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