Datasheet Texas Instruments TPS51285BRUKR — Datenblatt

TPS51285A
TPS51285B
www.ti.com SLVSBX0 – APRIL 2013 Ultra-Low Quiescent (ULQ™) Dual Synchronous Step-Down Controller with
5V and 3.3V LDOs
Check for Samples: TPS51285A, TPS51285B FEATURES APPLICATIONS 1 2 Input Voltage Range: 5 V to 24 V Notebook Computers
Output Voltages: 5 V and 3.3 V (Adjustable Tablet Computers
Range В±10%)
DESCRIPTION
Built-in, 100-mA, 5-V and 3.3-V LDOs
The TPS51285A and TPS51285B are cost-effective,
Clock Output for Charge-Pump
dual synchronous buck controllers with 5-V and 3.3-V
В±1% Reference Accuracy
LDOs, targeted for notebook system-power supply
Adaptive On-Time D-CAPв„ў Mode Control
solutions. The device achieves low power
consumption by the use of auto-skip and ULQв„ў
Architecture with 400 kHz (CH1) and 475 kHz
modes, which is beneficial for long battery life in
(CH2) Frequency
system stand-by mode. The 256-kHz VCLK output is
Auto-skip and ULQв„ў modes for long battery
provided to drive an external charge pump, …