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TPS73643DBVR The Texas Instruments TPS73643DBVR is a low-dropout linear voltage regulator providing a stable 4.3V output at up to 400mA. It features ultra-low dropout voltage and excellent transient response.
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TPS73643DBVR

Available from 1 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments TPS73643DBVR is a low-dropout linear voltage regulator providing a stable 4.3V output at up to 400mA. It features ultra-low dropout voltage and excellent transient response.
✓ Total Stock: 9,000 pcs
$ Price Range: $0.28

TPS73643DBVR Available from 1 distributor

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✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Optech Co.,Limited ✓
Non-Authorised Inventory information
9,000 pcs
On Request
9000 pcs On Request 1 On Request On Request 18+ On Request On Request
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TPS73643DBVR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Control Features
Current
Mounting Type
Noise
Number of Regulators
Operating Temperature
Output Configuration
Output Type
PSRR
Protection Features
Supplier Device Package
Voltage
Voltage Dropout (Max)
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TPS73643DBVR Description

Short technical summary and product information.

The Texas Instruments TPS73643DBVR is a 400mA, low-dropout (LDO) linear voltage regulator designed for portable and battery-powered applications. It utilizes an NMOS pass transistor topology, ensuring stability with or without an output capacitor and providing high reverse current blocking.

 

This regulator offers a fixed output voltage of 4.3V with an ultra-low dropout voltage of 75mV typical at 400mA. It boasts excellent load transient response and low noise characteristics (30µVRMS from 10Hz to 100kHz), making it suitable for noise-sensitive circuitry like VCOs. The device operates over an input voltage range of 1.7V to 5.5V and features thermal shutdown and current limit protection.

 

Packaged in a compact SOT-23-5 (SC-74A, SOT-753) surface-mount package, the TPS73643DBVR is ideal for space-constrained designs. Its low quiescent current (less than 1µA in shutdown mode) further enhances its suitability for power-sensitive applications. The regulator provides 0.5% initial accuracy and 1% overall accuracy over line, load, and temperature variations.

TPS73643DBVR Quick Information

Product Type: Low-Dropout Linear Regulator
Series: TPS736
Canonical Name: Texas Instruments TPS73643DBVR Low-Dropout Linear Voltage Regulator
Subcategory: Linear

TPS73643DBVR Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

TPS73643DBVR Estimated Pricing

Qty Low High
1+ $0.28 $0.28

Estimated market price range - modelled values for guidance only, not live distributor offers.

TPS73643DBVR Features

  • Stable with no output capacitor required.
  • Ultra-low dropout voltage of 75mV typical.
  • Low noise output of 30µVRMS.
  • 400mA maximum output current.
  • Compact SOT-23-5 surface-mount package.

TPS73643DBVR Applications

  • Ideal for portable battery-powered equipment.
  • Suitable for post-regulation of switching supplies.
  • Powers noise-sensitive circuitry like VCOs.
  • Point-of-load regulation for DSPs and FPGAs.

TPS73643DBVR FAQs

7 frequently asked questions generated from this part’s specifications.
What is the input voltage range of the TPS73643DBVR?

The input voltage range is 1.7V to 5.5V.

What package is the TPS73643DBVR available in?

It is available in a SOT-23-5 (SC-74A, SOT-753) surface-mount package.

What is the operating temperature range?

-40°C to 125°C.

What is the maximum output current?

400mA.

What is the dropout voltage?

75mV typical, 200mV maximum at 400mA load.

What is the output voltage accuracy?

0.5% initial, 1% overall across line, load, and temperature.

What is the quiescent current?

550µA typical, less than 1µA in shutdown mode.

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