1 Features
• D-CAP2™ mode enables fast transient response
• Low output ripple and allows ceramic output
capacitor
• Wide VIN input voltage range: 4.5 V to 18 V
• Output voltage range: 0.76 V to 5.5 V
• Highly efficient integrated FETs optimized
for lower duty cycle applications
– 63 mΩ (high side) and 33 mΩ (low side)
• High efficiency, less than 10 μA at shutdown
• High initial bandgap reference accuracy
• Adjustable soft start
• Pre-biased soft start
• 650-kHz switching frequency (fSW)
• Cycle-by-cycle over current limit
• Power good output
• Auto-skip Eco-mode™ for high efficiency at light
load

2 Applications
• Wide range of applications for low voltage system
– Digital TV power supply
– High definition Blu-ray Disc™ players
– Networking home terminal
– Digital set top box (STB)

3 Description
The TPS54526 is an adaptive on-time D-CAP2™
mode synchronous buck converter. The TPS54526
enables system designers to complete the suite
of various end equipment’s power bus regulators
with a cost effective, low component count, low
standby current solution. The main control loop for
the TPS54526 uses the D-CAP2™ mode control
which provides a very fast transient response with
no external compensation components. The adaptive
on-time control supports seamless transition between
PWM mode at higher load conditions and Ecomode
™ operation at light loads. Eco-mode™ allows
the TPS54526 to maintain high efficiency during
lighter load conditions. The TPS54526 also has a
proprietary circuit that enables the device to adopt
to both low equivalent series resistance (ESR) output
capacitors, such as POSCAP, SP-CAP, and ultra-low
ESR ceramic capacitors. The device operates from
4.5-V to 18-V VIN input. The output voltage can be
programmed between 0.76V and 5.5V. The device
also features an adjustable soft start time and a power
good function. The TPS54526 is available in the 14-
pin HTSSOP package and the 16 pin QFN package,
designed to operate from –40°C to 85°C.