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2022-09-24 23:33:15
LM2788-120mA High Efficiency Step-Down Switched Capacitor Voltage Converter
The LM2788 switched capacitor step-down DC/DC converter effectively generates a 120mA low regulated rail from a 2.6V to 5.5V input. Fixed output voltage options 1.5V, 1.8V and 2.0V. The LM2788 uses multiple fractional gain configurations to maximize conversion efficiency over the entire input voltage and output current range. Also contributing to overall efficiency is the extremely low supply current of the LM2788: 32µA operating off-load and 0.1µA off. The LM2788's solution for optimal external component needs minimizes size and cost, making it ideal for some Li-Ion and other battery-powered designs. Two 1µF flying capacitors and two 10µF bypass capacitors are all that are required, no inductor is required. The LM2788 also features a soft-start circuit to reduce noise, short-circuit protection and over-temperature protection.
Features Output voltage options: 2.0V±5%, 1.8V±5%, 1.5V±6%
120mA output current capability for multiple gains and gain jumps Highest efficiency - up to 90% efficiency
2.6V to 5.5V Input Range Low Operating Current: 32µA
Shutdown Supply Current: 0.1μA
Thermal and Short-Circuit Protection Available in 8-Pin MSOP Package
Application Cell Phone Pager
H/PC and P/PC Devices Portable Electronic Devices Handheld Instruments