characteristic

Conversion Input Voltage Range: 3 V to 15 V

VDD Input Voltage Range: 4.5 V to 25 V

Output Voltage Range: 0.6 V to 5.5 V

5-V LDO Output

Integrated Power MOSFETs with 12-A Continuous

Output Current

<10-µA Shut Down Current

Auto-Skip Eco-mode ™ for Light-Load Efficiency

D-CAP ™ Mode with Fast Transient Response

Selectable Switching Frequency from 250 kHz to

1 MHz with an External Resistor

Built-in 1%, 0.6-V Reference

0.7-ms, 1.4-ms, 2.8-ms and 5.6-ms Selectable

Internal Voltage Servo Soft-Start

Pre-Charged Start-up Capability

Integrated Boost Switch

Adjustable Overcurrent Limit Via External Resistor

Overvoltage/Undervoltage, UVLO and Over-

Temperature Protection

Support All Ceramic Output Capacitors

Open Drain Power Good Indication

40-pin VQFN Package with Thermal Pad

explain

TPS53315 is a D-CAP ™ mode, 12-A synchronous switcher with integrated MOSFETs. It is designed for ease of use, low external component count, and small package power systems.

This device features single-rail input support, one 19-mΩ and one 7-mΩ integrated MOSFET, accurate 1%, 0.6 V Reference, and integrated boost switch. A sample of competitive features include: greater than 96% maximum efficiency, 3 V to 15 V wide input voltage range, very low external component count, D-CAP ™ mode control for super fast transient, selectable auto-skip and PWM operation, internal soft-start control, adjustable frequency, and no need for compensation.
The conversion input voltage ranges from 3 V to 15 V, the supply voltage range is from 4.5 V to 25 V, and the output voltage range is from 0.6 V to 5.5 V.

The TPS53315 is available in a 5 mm × 7 mm 40-pin, VQFN package and is specified from –40°C to 85°C.