See datasheet for actual packaging/pinout drawings

Package | PIN:

RHB | 32


I (-40 to 85)

ECO Plan:

Green (RoHS & no Sb/Br)

TI Store Price:

1 - 9 $ 6.02
10 - 24 $ 5.42
25 - 99 $ 5.06
100 - 249 $ 4.54
250 - 499 $ 4.24
500 - 749 $ 3.69
750 - 999 $ 3.19
1000 - 9999 $ 3.13
  View datasheet for TPS51427ARHBT View product folder for TPS51427ARHBT

Adjust your quantity during checkout

TPS51427ARHBT-Dual D-CAP™Mode Synchronous Step Down Controller for Notebook Power with OOB Function Disabled

The TPS51427A is a dual synchronous step-down controller designed for notebook and mobile communications applications. This device is part of a low-cost suite of notebook power bus regulators that enables system designs with low external component counts. The TPS51427A includes two pulse-width-modulation (PWM) controllers, SMPS1 and SMPS2. The output of SMPS1 can be adjusted from 0.7 V to 5.9 V, while the output of SMPS2 can be adjusted from 0.5 V to 2.5 V. This device also features a low-dropout (LDO) regulator that provides a 5-V/3.3-V output, or adjustable from 0.7-V to 4.5-V output via LDOREFIN. The fixed-frequency emulated adaptive on-time control supports seamless operation between PWM mode under heavy load conditions and reduced frequency operation at light loads for high-efficiency down to the milliampere range. An integrated boost switch enhances the high-side MOSFET to further improve efficiency. The main control loop is the D-CAP™ mode that is optimized for low equivalent series resistance (ESR) output capacitors such as POSCAP or SP-CAP. Advanced ramp compensation minimizes jitter without degrading line and load regulation. RDS(on) current sensing methods offers maximum cost saving.

The TPS51427A supports supply input voltages that range from 5.5 V to 28 V. It is available in the 32-pin, 5-mm × 5-mm QFN package (Green, RoHs- compliant, and Pb-free). The device is specified from -40°C to +85°C.

View datasheet
View product folder
Order SummaryEdit >
Subtotal: $0.00
Shipping & Handling: -
Total (USD): $0.00