Synchronous Buck Power Supply features programmable LDO.
Press Release Summary:
Supplied in 5 x 5 mm package, SC403 utilizes EcoSpeed(TM) architecture with pseudo-fixed frequency adaptive on-time control and features integrated power MOSFETs, bootstrap switch, and programmable LDO (200 mA). It operates from 3-28 V and offers internal or external bias voltage of 3-5 V. Along with various logic I/O control options, IC incorporates protections for over-voltage and under-voltage conditions as well as TC compensated RDS(ON) sensed current limit.
Original Press Release:
Semtech SC403
6A EcoSpeed(TM) Integrated FET Regulator with Programmable LDO
The SC403 is a stand-alone synchronous EcoSpeed(TM) buck power supply which incorporates Semtech's advanced patent-pending adaptive on-time control architecture to provide excellent light-load efficiency and fast transient response. It features integrated power MOSFETs, a bootstrap switch, and a programmable LDO in a 5x5mm package. The device is highly efficient and uses minimal PCB area.
Features
- Input voltage - 3V to 28V
- Internal or external bias voltage - 3V to 5V
- Integrated bootstrap switch
- Programmable LDO output - 200mA
- Independent control EN for LDO and switcher
- Programmable VIN UVLO threshold
- Power good output
- Selectable ultrasonic power save mode
- Programmable soft start time
- Over-voltage and under-voltage
- TC compensated RDS(ON) sensed current limit
- Lead-free package - 5x5mm, 32-pin MLPQ
- Fully RoHS/WEEE compliant and halogen free
Applications
Packaging
