1 Features

1• D-CAP2™ mode control

– Fast transient response

– No external parts required for loop

compensation

– Compatible with ceramic output capacitors

• High initial reference accuracy (±1%)

• Wide input voltage 4.5 V to 28 V

• Output voltage 0.77 V to 7 V

• Low-side RDS(on) Loss-less current sensing

• Fixed soft-start time: 1.4 ms

• Non-sinking pre-biased soft start

• Switching frequency: 500 kHz

• Cycle-by-cycle overcurrent limiting control

• Auto-Skip Eco-Mode™ for high efficiency at light

load

• Power-good output

• OCL/OVP/UVP/UVLO/TSD protections

• Adaptive gate drivers with integrated boost PMOS

switch

• Thermally compensated OCP, 4000 ppm/°C

• 10-Pin VSSOP

2 Applications

• Point-of-load regulation in low power systems for

wide range of applications

– Digital TV power supply

– Networking home terminal

– Digital set top box (STB)

– DVD player / recorder

– Gaming consoles and other

3 Description

The TPS53015 device is a single, adaptive on-time

D-CAP2 ™ mode synchronous buck controller. The

device enables system designers to complete the

suite of various end equipment power bus regulators

with cost effective low external component count and

low standby current solution. The main control loop

for the TPS53015 uses the D-CAP2 mode control

which provides a very fast transient response with no

external compensation components. The adaptive ontime

control supports seamless transition between

PWM mode at higher load condition and Eco-mode™

operation at light load. Eco-mode operation allows the

device to maintain high efficiency during lighter load

conditions. The device is also able to adapt to both

low equivalent series resistance (ESR) output

capacitors such as POSCAP or SP-CAP and ultralow

ESR ceramic capacitors. The device provides

convenient and efficient operation with input voltages

from 4.5 V to 28 V and output voltage from 0.77 V to

7 V.

The TPS53015 is available in the 3-mm × 3-mm 10-

pin VSSOP (DGS) package and is specified for an

ambient temperature range of –40°C to 85°C.