TPS65251RHAR - TI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

TPS65251RHAR
Manufacturer

TI
ChipWorker Part#

CW1723687
Category

DC to DC Converter
Package

VQFN-40
Description

4.5V TO 18V input, 3A/2A/2A output, synchronous triple buck converter 40-VQFN -40℃ to 125℃
Documentation

Datasheet

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TPS65251RHAR Specifications

Attribute	Attribute Value

Part Number	TPS65251RHAR
Manufacturer	TI
ChipWorker Part#	CW1723687
Category	DC to DC Converter
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	40 Pin
Case/Package	VQFN-40
Supply Voltage (DC)	18.0 V
Number of Outputs	3 Output
Output Current	3A, 2A
Number of Positions	40 Position
Power Dissipation	3330 mW
Quiescent Current	20.0 mA
Number of Regulated Outputs	3 Output
Switching Frequency	300kHz ~ 2.2MHz
Topology	Buck
Input Voltage (Max)	18 V
Input Voltage (Min)	4.5 V
Output Voltage (Max)	18 V
Output Voltage (Min)	0.8 V
Operating Temperature (Max)	125 ℃
Operating Temperature (Min)	-40 ℃
Power Dissipation (Max)	3330 mW
Supply Voltage	18 V
Input Voltage	4.5V ~ 18V
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Operating Temperature	-40℃ ~ 125℃
Product Lifecycle Status	Active
Packaging	Tape & Reel (TR)
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance	No SVHC
REACH SVHC Compliance Edition	2015/06/15
ECCN Code	EAR99
HK STC License	NLR

Product Description

The TPS65251RHAR is a synchronous step down three Buck Converter 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 15V systems and have integrated power transistors. The output voltage can be set externally using a resistor divider to any value between 0.8V 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. 180° out of phase operation between Buck 1 and Buck 2, 3 (Buck 2 and 3 run in phase) minimizes the input filter requirements.
Wide input supply voltage range (4.5 to 18V)
0.8V, 1% Accuracy reference
Adjustable switching frequency
300kHz to 2.2MHz 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 circuit
Optional low-power mode operation for light loads

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