Texas Instruments LV3842 Synchronous Step-Down DC-DC Converter
Texas Instruments LV3842 Synchronous Step-Down DC-DC Converter is an easy-to-use converter that drives up to 600mA load current. With a wide input range of 4V to 36V, the device is designed for various industrial applications for power conditioning from an unregulated source.
The LV3842 employs a 1.1MHz switching frequency for small solution size. The LV3842 also has an FPWM (forced PWM) version to achieve a small output voltage ripple over the full load range and constant frequency. Soft-start and compensation circuits are employed internally to allow the device to be used with a minimum of external components.
The device has built-in protection features, such as hiccup mode short-circuit protection, cycle-by-cycle current limit, and thermal shutdown in case of excessive power dissipation. The Texas Instruments LV3842 is available in the SOT-23-6 package.
Features
- Configured for rugged industrial applications
- 4V to 36V input voltage range supporting 40V absolute maximum rating
- 600mA continuous output current
- 70ns minimum switching-on time
- 98% maximum duty cycle
- PFM and Forced PWM (FPWM) options
- 1.1MHz switching frequency
- Support start-up with pre-biased output
- Short-circuit protection with hiccup mode
- ±0.5% tolerance voltage reference at 25°C junction temperature
- Precision enable
- Overtemperature protection
Applications
- Electricity meter
- Smart meter data collector, concentrator
- Power Line Communication (PLC) module
- General purpose-wide VIN power supplies
Functional Block Diagram
Publicado: 2024-03-06
| Actualizado: 2024-04-01