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reference designDCP3603 | Demoboard DCP3603

STMicroelectronics DCP3603 | Demoboard DCP3603

Overview

TopologyBuck Converter
Input voltage36 V
Output 15 V / 3 A
IC revision1.0

Description

The DCP3603 is a wide-input voltage, easy-to-use synchronous buck converter capable of driving up to 3 A load current.The extended input range from 3.3 V to 36 V makes the device suitable for a wide range of industrial applications.The DCP3603 operates at 500 kHz or 1.0 MHz fixed switching frequency allowing the use of small inductors for an optimized solution size.Optional switching frequency dithering is implemented to improve EMI performances.It is based on a peak current mode architecture, including soft-start circuit, overcurrent protection circuit, overtemperature protection and output overvoltage protection, and is packaged in a SOT23-6L package.

Features

89% typical efficiency at 1000 mA load (VIN = 24 V, VOUT = 5 V)93% typical efficiency at 1000 mA load (VIN = 12 V, VOUT = 5 V)3.3 V to 36 V input operating voltage rangeUp to 3 A output current capability85 μA operating quiescent current500 kHz or 1.0 MHz fixed switching frequencySynchronous rectificationInternal compensation networkPeak current mode controlTwo different versions: LCM for high efficiency at light loads and LNM for noise-sensitive applicationsOutput overvoltage protectionThermal shutdownPrecision enableSwitching frequency ditheringAvailable in SOT23-6L package

Typical applications

  • Major appliances, smart metering, Industrial 12/24V bus conversion

More information

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
C
Tol. C
VR(V (DC))
Size
Operating Temperature
DF(%)
RISO
Ceramic Type
L(mm)
W(mm)
H(mm)
Fl(mm)
Packaging
L(µH)
IRP,40K(A)
ISAT,30%(A)
RDC typ.(mΩ)
RDC max.(mΩ)
fres(MHz)
Mount
SamplesAvailability & Sample
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885012206095
SPECWCAP-CSGP MLCCs 50 V(DC), 100 nF, ±10%
Simu­lation
Availability
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 50 V(DC)
Capacitance100 nF
Capacitance±10% 
Rated Voltage50 V (DC)
Size0603 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor3 %
Insulation Resistance5 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
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885012107018
SPECWCAP-CSGP MLCCs 25 V(DC), 4.7 µF, ±20%
Simu­lation
Availability
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Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 25 V(DC)
Capacitance4.7 µF
Capacitance±20% 
Rated Voltage25 V (DC)
Size0805 
Operating Temperature -55 °C up to +85 °C
Dissipation Factor10 %
Insulation Resistance0.02 GΩ
Ceramic TypeX5R Class II 
Length2 mm
Width1.25 mm
Height1.25 mm
Pad Dimension0.5 mm
Packaging7" Tape & Reel 
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744393305056
SPECWE-XHMI SMT Power Inductor, –, –
Simu­lation
Availability
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-XHMI SMT Power Inductor
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Size5050 
Operating Temperature -40 °C up to +125 °C
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Length5.55 mm
Width5.35 mm
Height5.1 mm
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Inductance5.6 µH
Performance Rated Current6.7 A
Saturation Current @ 30%9.7 A
DC Resistance21.8 mΩ
DC Resistance25.44 mΩ
Self Resonant Frequency21 MHz
MountSMT 
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744393305068
SPECWE-XHMI SMT Power Inductor, –, –
Simu­lation
Availability
–
Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-XHMI SMT Power Inductor
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Size5050 
Operating Temperature -40 °C up to +125 °C
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Length5.55 mm
Width5.35 mm
Height5.1 mm
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Inductance6.8 µH
Performance Rated Current6.6 A
Saturation Current @ 30%6.9 A
DC Resistance23.7 mΩ
DC Resistance29.28 mΩ
Self Resonant Frequency18 MHz
MountSMT 
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744393305033
SPECWE-XHMI SMT Power Inductor, –, –
Simu­lation
Availability
–
Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-XHMI SMT Power Inductor
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Size5050 
Operating Temperature -40 °C up to +125 °C
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Length5.55 mm
Width5.35 mm
Height5.1 mm
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Inductance3.3 µH
Performance Rated Current9.2 A
Saturation Current @ 30%12.3 A
DC Resistance13.2 mΩ
DC Resistance16.6 mΩ
Self Resonant Frequency26 MHz
MountSMT 
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