TPS65251RHAR(New and original inventory 100000)

Short Description:

Manufacturer:Texas Instruments

Manufacturer product number:TPS65251RHAR


Original factory standard delivery time:35 weeks

Detailed Description:Buck Switching Regulator IC Positive Adjustable 0.8V 3 Outputs 3A, 2A 40-VFQFN Exposed Pad

Product Detail

Product Tags

product properties:

category Integrated Circuit (IC)  PMIC - Voltage Regulators - DC DC Switching Regulators
manufacturer Texas Instruments
series -
Package Tape and Reel (TR)  Shear Band (CT)  Digi-Reel® Custom Reel
product status in stock
Function Buck
output configuration just
topology Buck
output type adjustable
Number of outputs 3
Voltage - Input (Min) 4.5V
Voltage - Input (Max) 18V
Voltage - Output (min/fixed) 0.8V
Voltage - Output (Maximum) 18V
Current - Output 3A, 2A
Frequency - switch 300kHz ~ 2.2MHz
Synchronous Rectifier Yes
Operating temperature -40°C ~ 125°C (TJ)
installation type Surface Mount Type
Package/Enclosure 40-VFQFN Exposed Pad
Supplier Device Packaging 40-VQFN (6x6)
Basic product number TPS65251

Environment and Export Classification:

RoHS status Compliant with ROHS3 specification
Moisture Sensitivity Level (MSL) 3 (168 hours)
REACH status Non-REACH products
HTSUS 8542.39.0001

TPS65251 4.5-V to 18-V Input, High-Current, Synchronous Step-Down Three Buck
Switcher With Integrated FET
1 Features

Wide Input Supply Voltage Range (4.5 to 18 V)

0.8 V, 1% Accuracy Reference

Continuous Loading: 3 A (Buck 1),
2 A (Buck 2 and 3)

Maximum Current: 3.5 A (Buck 1),
2.5 A (Buck 2 and 3)

Adjustable Switching Frequency
300 kHz to 2.2 MHz Set by External Resistor

Dedicated Enable for Each Buck

External Synchronization Pin for Oscillator

External Enable/Sequencing and Soft-Start Pins

Adjustable Current Limit Set By External Resistor

Soft-Start Pins

Current-Mode Control With Simple Compensation


Optional Low-Power Mode Operation for Light

VQFN Package, 40-Pin 6 mm × 6 mm RHA
2 Applications

Set Top Boxes

Blu-ray DVD



Car Audio/Video

Security Camera
3 Description
The TPS65251 features three synchronous wide
input range high efficiency buck converters. The
converters are designed to simplify its application
while giving the designer the option to optimize their
usage according to the target application.
The converters can operate in 5-, 9-, 12- or 15-V
systems and have integrated power transistors. The
output voltage can be set externally using a resistor
divider to any value between 0.8 V and close to the
input supply. Each converter features enable pin that
allows a delayed start-up for sequencing purposes,
soft-start pin that allows adjustable soft-start time by
choosing the soft-start capacitor, and a current limit
(RLIMx) pin that enables designer to adjust current
limit by selecting an external resistor and optimize the
choice of inductor. The current mode control allows a
simple RC compensation.
The switching frequency of the converters can either
be set with an external resistor connected to ROSC
pin or can be synchronized to an external clock
connected to SYNC pin if needed. The switching
regulators are designed to operate from 300 kHz to
2.2 MHz. 180° out of phase operation between Buck
1 and Buck 2, 3 (Buck 2 and 3 run in phase)
minimizes the input filter requirements.

  • Previous:
  • Next:

  • Leave Your Message

    Related Products


    Leave Your Message