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.