LTC3700 Overview
Key Features
- Burst Mode is a registered trademark of Linear Technology Corporation
- The LTC®3700 is a constant frequency current mode stepdown (buck) DC/DC controller with excellent AC and DC load and line regulation
- The buck controller incorporates an undervoltage lockout feature that shuts down the controller when the input voltage falls below 2.1V
- The buck regulator provides a ±2.5% output voltage accuracy
- It consumes only 210µA of quiescent current in normal operation with the LDO consuming an additional 50µA
- In shutdown, a mere 10µA (combined) is consumed
- To further maximize the life of a battery source, the external P-channel MOSFET is turned on continuously in dropout (100% duty cycle)
- High constant operating frequency of 550kHz allows the use of a small external inductor
