The synchronous Switching Controllers from Analog Devices provide high conversion efficiency with wide voltage output rails. They are highly programmable and deliver stipulated application performance requirements.
Feature
- 92% efficiency (no sense resistor required)
- ±1.0% initial accuracy
- IC supply voltage range: 2.9 V to 5.5 V
- Power-input voltage as low as 1.0 V
- Capable of high supply input voltage (>5.5 V) with an external NPN or a resistor
- VIN UVLO and 35 mA shunt regulator
- External slope compensation with 1 resistor
- Programmable operating frequency (100 kHz to 1.5 MHz) with 1 resistor
- Lossless current sensing for switch-node voltage <30 V
- Resistor current sensing for switch-node voltage >30 V
- Synchronizable to external clock
- Current-mode operation for excellent line and load transient responses
Applications
- APD bias
- Portable electronic equipment
- Isolated dc-to-dc converter
- Step-up/step-down dc-to-dc converter
- LED driver for laptop computer and navigation system
- LCD backlighting
(Picture: Pinout)
