LT1616 - 600mA, 1.4MHz Step-Down Switching Regulator in SOT-23
- Wide Input Range: 3.6V to 25V
- 5V at 400mA from7V to 25V Input
- 3.3V at 400mA from 4.7V to 25V Input
- Fixed Frequency 1.4MHz Operation
- Uses Tiny Capacitors and Inductors
- Internally Compensated
- Low Shutdown Current: <1µA
- Low VCESAT Switch: 220mV at 300mA
- Tiny 6-Lead SOT-23 Package
DescriptionThe LT1616 is a current mode PWM step-down DC/DC converter with internal 0.6A power switch, packaged in a tiny 6-lead SOT-23. The wide input range of 3.6V to 25V makes the LT1616 suitable for regulating a wide variety of power sources, from 4-cell batteries and 5V logic rails to unregulated wall transformers and lead-acid batteries. Its high operating frequency allow the use of tiny, low cost inductors and ceramic capacitors. With its internal compensation eliminating additional components, a complete 400mA step-down regulator fits onto 0.15 square inches of PC board area.
The constant frequency current mode PWM architecture and stable operation with ceramic capacitors results in lopw, predictable output ripple. Current limiting provides protection against shorted outputs. The low current (<1µA) shutdown provides complete output disconnect, enabling easy power management in battery-powered systems.
CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.
For complete and up to date package information and drawings, please refer to our packaging page
- Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details
Package Variations and Pricing
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- Wall Transformer Regulation
- Local Logic Supply Conversion:
12V to 5V
12V or 5V to 3.3V, 2.5V or 1.8V
- Battery-Powered Equipement
- Distributed Supply Regulation
- Digital Cameras
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