Product overview
Key Benefits
Compact design
The SOT23-6L package is ideal for space-constrained applications
Low-power mode
Optimized power consumption for high efficiency
Cost-effective solutions
High integration reduces the overall application cost
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.
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All 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 range
- Up to 3 A output current capability
- 85 μA operating quiescent current
- 500 kHz or 1.0 MHz fixed switching frequency
- Synchronous rectification
- Internal compensation network
- Peak current mode control
- Two different versions: LCM for high efficiency at light loads and LNM for noise-sensitive applications
- Output overvoltage protection
- Thermal shutdown
- Precision enable
- Switching frequency dithering
- Available in SOT23-6L package
eDesignSuite
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EDA Symbols, Footprints and 3D Models
STMicroelectronics - DCP3603
Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.
Please select one model supplier :
Symbols
Footprints
3D models
All resources
| Resource title | Version | Latest update | Actions | Details | Download |
|---|
SIMPLIS models (1)
| Resource title | Version | Latest update | Actions | Options | ||
|---|---|---|---|---|---|---|
| ZIP | 2026.04 | 21 May 2026 | 21 May 2026 |
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Longevity Commitment | Longevity Starting Date | Material Declaration** |
|---|---|---|---|---|---|---|---|
| DCP3603ACDMR | Evaluation Product is under characterization. Limited Engineering samples available. EN | SOT23-6L | Industrial | Ecopack3 | 10 | 2025-11-19T00:00:00.000+01:00 | |
| DCP3603ACMR | Active Product is in volume production. | SOT23-6L | Industrial | Ecopack3 | 10 | 2025-11-19T00:00:00.000+01:00 | |
| DCP3603ANDMR | Active Product is in volume production. | SOT23-6L | Industrial | Ecopack3 | 10 | 2025-11-19T00:00:00.000+01:00 | |
| DCP3603ANMR | Evaluation Product is under characterization. Limited Engineering samples available. EN | SOT23-6L | Industrial | Ecopack3 | 10 | 2025-11-19T00:00:00.000+01:00 | |
| DCP3603BCDMR | Active Product is in volume production. | SOT23-6L | Industrial | Ecopack3 | 10 | 2025-11-19T00:00:00.000+01:00 | |
| DCP3603BCMR | Active Product is in volume production. | SOT23-6L | Industrial | Ecopack3 | 10 | 2025-11-19T00:00:00.000+01:00 | |
| DCP3603BNDMR | Active Product is in volume production. | SOT23-6L | Industrial | Ecopack3 | 10 | 2025-11-19T00:00:00.000+01:00 | |
| DCP3603BNMR | Active Product is in volume production. | SOT23-6L | Industrial | Ecopack3 | 10 | 2025-11-19T00:00:00.000+01:00 |
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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Sample & Buy
| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DCP3603ACMR | | | distributors No availability of distributors reported, please contact our sales office | ||||||||||
| DCP3603BNDMR | | | distributors No availability of distributors reported, please contact our sales office | ||||||||||
| DCP3603ACDMR | | | distributors No availability of distributors reported, please contact our sales office | ||||||||||
| DCP3603BCMR | | | distributors No availability of distributors reported, please contact our sales office | ||||||||||
| DCP3603BNMR | | | distributors No availability of distributors reported, please contact our sales office | ||||||||||
| DCP3603BCDMR | | | distributors No availability of distributors reported, please contact our sales office | ||||||||||
| DCP3603ANMR | | | distributors No availability of distributors reported, please contact our sales office | ||||||||||
| DCP3603ANDMR | | | distributors No availability of distributors reported, please contact our sales office |
DCP3603ACMR Active
DCP3603BNDMR Active
DCP3603ACDMR Evaluation
DCP3603BCMR Active
DCP3603BNMR Active
DCP3603BCDMR Active
DCP3603ANMR Evaluation
DCP3603ANDMR Active
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors