The LT1934EDCB-1 is a micropower step-down DC/DC converter with internal 400mA power switch, packaged in a low profile (1mm) ThinSOT. With its wide input range of 3.2V to 34V, the LT1934EDCB-1 can regulate a wide variety of power sources, from 4-cell alkaline batteries and 5V logic rails to unregulated wall transformers and lead-acid batteries. Quiescent current is just 12µA and a zero current shutdown mode disconnects the load from the input source, simplifying power management in battery-powered systems. Burst Mode® operation and the low drop internal power switch result in high efficiency over a broad range of load current.
The LT1934EDCB-1 provides up to 300mA of output current. The LT1934-1 has a lower current limit, allowing optimum choice of external components when the required output current is less than 60mA. Fast current limiting protects the LT1934EDCB-1 and external components against shorted outputs, even at 34V input.
Feature
- Wide Input Voltage Range: 3.2V to 34V
- Micropower Operation: IQ = 12µA
- 5V at 250mA from 6.5V to 34V Input (LT1934)
- 5V at 60mA from 6.5V to 34V Input (LT1934-1)
- 3.3V at 250mA from 4.5V to 34V Input (LT1934)
- 3.3V at 60mA from 4.5V to 34V Input (LT1934-1)
- Low Shutdown Current: <1µA
- Low VCESAT Switch: 200mV at 300mA
- Low Profile (1mm) SOT-23 (ThinSOT™) and (2mm × 3mm × 0.8mm) 6-Pin DFN Package
Applications
- Wall Transformer Regulation
- Automotive Battery Regulation
- Standby Power for Portable Products
- Distributed Supply Regulation
- Industrial Control Supplies
(Picture: Pinout)
