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Overview
| Topology | Buck Converter |
| Input voltage | 2.7-5.5 V |
| Switching frequency | 1500-2800 kHz |
| Output 1 | 3.3 V / 0.5 A |
| IC revision | A |
Description
Step-down converter choices include a variety of linear and switching regulators. The MCP1603 500 mA synchronous buck regulator provides a low profile, cost effective, and efficient solution for devices like cellular telephones, USB-powered devices and hand held instruments. The device provides a solution with minimal board space because of the high-frequency operation, which reduces the size requirements of the external inductor and capacitor and the 1 mm maximum height TSOT package.The MCP1603 switches at a fixed frequency of 2.0 MHz when operating at a heavy load. This provides a low-noise, small size solution. When operating at light loads, the MCP1603 changes operation to a pulse frequency modulation (PFM) mode to minimize quiescent current drawn from the input source. No intervention is necessary for smooth transition from one mode to another.
Features
- Compact size and low profile 500 mA converter design.
- Wide Input voltage range from 2.7V to 5.5V.
- Five different output voltage settings: 0.8V, 1.2V, 1.8V, 2.5V, and 3.3V.
- Test points for connecting input voltage source and external load.
Typical applications
- Cellular Telephones / Portable Computers / Organizers / PDAs / Digital Cameras / Headsets
- USB Powered Devices
- +5V or +3.3V Distributed Systems
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IR(A) | ISAT(A) | fres(MHz) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-TPC SMT Tiny Power Inductor, 3.3 µH, 0.65 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TPC SMT Tiny Power Inductor | Inductance3.3 µH | Rated Current0.65 A | Saturation Current0.72 A | Self Resonant Frequency130 MHz | MountSMT | ||||
 | WE-TPC SMT Tiny Power Inductor, 4.7 µH, 1.35 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TPC SMT Tiny Power Inductor | Inductance4.7 µH | Rated Current1.35 A | Saturation Current1.7 A | Self Resonant Frequency84 MHz | MountSMT | ||||
| WE-TPC SMT Tiny Power Inductor, 4.7 µH, 0.48 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TPC SMT Tiny Power Inductor | Inductance4.7 µH | Rated Current0.48 A | Saturation Current0.5 A | Self Resonant Frequency100 MHz | MountSMT | ||||
 | WE-TPC SMT Tiny Power Inductor, 4.7 µH, 1.2 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TPC SMT Tiny Power Inductor | Inductance4.7 µH | Rated Current1.2 A | Saturation Current0.9 A | Self Resonant Frequency75 MHz | MountSMT | ||||
| WE-TPC SMT Tiny Power Inductor, 6.8 µH, 0.85 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TPC SMT Tiny Power Inductor | Inductance6.8 µH | Rated Current0.85 A | Saturation Current0.75 A | Self Resonant Frequency45 MHz | MountSMT |