IC-DC Datasheet PDF


Part Number

IC-DC

Description

2-CHANNEL BUCK/BOOST DC/DC CONVERTER

Manufacture

IC-Haus

Total Page 19 Pages
PDF Download
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Features Datasheet pdf 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 Rev erse polarity protection up to -36 V wi th autarky function Universal buck/boos t converter with high efficiency Two b ack-end, adjustable linear regulators ( 1.5 V to 5.5 V) with a total of up to 3 00 mA of output current and a separate output voltage monitor Low residual rip ple with small capacitors in the µF ra nge Separate enable inputs for the line ar regulators Two switched linear regul ator outputs Integrated switching trans istors and flyback diodes Converter cu t-off current can be set by an external resistor Integrated 3 MHz oscillator wit.
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IC-DC Datasheet
iC-DC
2-CHANNEL BUCK/BOOST DC/DC CONVERTER
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
Rev B1, Page 1/19
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
4...36V CVB
1μF
CVBR
10μF
VB
VBR
LVBH
22μH
VBL VHL
REVERSE
P ROTE CT.
INTERNAL
S UP P LY
VBROK
NAUT
TOK
VOLTAGE
MONITOR
AUTARKY
DETECT.
THERMAL
SHUTDOWN
ERROR DETECT.
RREF
20k
RREF
BIAS
OSCILLATOR
REFERENCE
VCC1
VCC2
ENV1
ENV2
R1 R3
R2
R4
CFG1
CFG2
OUTP UT
ENABLE
CONFIGURATION
VCC1:
5V/3.3V/R1:R2
VCC2:
3.3V/2.5V/R3:R4
BUCK
BOOST
CONTROL
SWITCHING REGULATOR
iC-DC
GNDA GND
VH
VH1
1
LIN.-REG.1
VCC1
1 POE1
SUPPLY
SWITCH 1
VH2
VCC2
2
LIN.-REG.2
VCC1,VCC2
2
TEST
&
VOLTAGE
MONITORING
SUPPLY
SWITCH 2
POE2
V1OK
1
V2OK
2
CVH
3.3μF
CVH1
3.3μF
1.5...5.5V
CVCC1
1μF
CVH2
3.3μF
1.5...5.5V
CVCC2
1μF
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