40-pin (RHA) package image

TPS65251-3RHAR ACTIVE

4.5-V to 18-V input, 3A/2A/2A output, Synchronous triple buck converter

ACTIVE custom-reels CUSTOM Custom reel may be available

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Additional package qty | Carrier options These products are exactly the same but come in a different carrier type

TPS65251-3RHAT ACTIVE custom-reels CUSTOM Custom reel may be available
Package qty | Carrier 250 | SMALL T&R
Inventory
Qty | Price 1ku | +

Quality information

Rating Catalog
RoHS Yes
REACH Yes
Lead finish / Ball material NIPDAU
MSL rating / Peak reflow Level-3-260C-168 HR
Quality, reliability
& packaging information

Information included:

  • RoHS
  • REACH
  • Device marking
  • Lead finish / Ball material
  • MSL rating / Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
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Additional manufacturing information

Information included:

  • Fab location
  • Assembly location
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Export classification

*For reference only

  • US ECCN: EAR99

Packaging information

Package | Pins VQFN (RHA) | 40
Operating temperature range (°C) -40 to 125
Package qty | Carrier 2,500 | LARGE T&R

Features for the TPS65251-3

  • Wide input supply voltage range (4.5 to 18 V)
  • Output range: 0.8 V to VIN – 1 V
  • 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
  • Adjustable current limit set by external resistor
  • Soft-start pins
  • Current-mode control with simple compensation circuit
  • Power good
  • Automatic PFM/PWM operation
  • VQFN package, 40-pin 6-mm × 6-mm RHA

Description for the TPS65251-3

The TPS65251-x 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 an 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 the 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 the 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.

TPS65251-x features a supervisor circuit that monitors each converter output. The PGOOD pin is asserted when sequencing is done, all PG signals are reported and a selectable end of reset time lapses. The polarity of the PGOOD signal is active high.

All converters feature an automatic low-power pulse PFM skipping mode, which improves efficiency during light loads and standby operation, while ensuring a very-low output ripple, allowing for a value of less than 2% at low output voltages.

Pricing

Qty Price
+

Additional package qty | Carrier options These products are exactly the same but come in a different carrier type

TPS65251-3RHAT ACTIVE custom-reels CUSTOM Custom reel may be available
Package qty | Carrier 250 | SMALL T&R
Inventory
Qty | Price 1ku | +

Carrier options

You can choose different carrier options based on the quantity of parts, including full reel, custom reel, cut tape, tube or tray.

A custom reel is a continuous length of cut tape from one reel to maintain lot- and date-code traceability, built to the exact quantity requested. Following industry standards, a brass shim connects an 18-inch leader and trailer on both sides of the cut tape for direct feeding into automated assembly machines. TI includes a reeling fee for custom reel orders.

Cut tape is a length of tape cut from a reel. TI may fulfill orders using multiple strips of cut tapes or boxes to satisfy the quantity requested.

TI often ships tube or tray devices inside a box or in the tube or tray, depending on inventory availability. We pack all tapes, tubes or sample boxes according to internal electrostatic discharge and moisture-sensitivity-level protection requirements.

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Lot and date code selection may be available

Add a quantity to your cart and begin the checkout process to view the options available to select lot or date codes from existing inventory.

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