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Product details

Parameters

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Package | Pins | Size

TO-252 (NDP) 3 40 mm² 7.3 x 6.58 open-in-new Find other Linear regulators (LDO)

Features

  • Renewable Energy Grade
  • High-Accuracy Output Voltage
  • Ensured 100mA Output Current
  • Extremely Low Quiescent Current
  • Low Dropout Voltage
  • Extremely Tight Load and Line Regulation
  • Very Low Temperature Coefficient
  • Use as Regulator or Reference
  • Needs Minimum Capacitance for Stability
  • Current and Thermal Limiting
  • Stable With Low-ESR Output Capacitors (10mΩ to 6Ω)

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Description

The SM72238 is a micropower voltage regulator with very low quiescent current (75µA typ.) and very low dropout voltage (typ. 40mV at light loads and 380mV at 100mA). It is ideally suited for use in battery-powered systems. Furthermore, the quiescent current of the SM72238 increases only slightly in dropout, prolonging battery life.

The SM72238 is available in the surface-mount D-Pak package.

Careful design of the SM72238 has minimized all contributions to the error budget. This includes a tight initial tolerance (.5% typ.), extremely good load and line regulation (.05% typ.) and a very low output voltage temperature coefficient, making the part useful as a low-power voltage reference.

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Technical documentation

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Type Title Date
* Datasheet SM72238 Micropower Voltage Regulator datasheet (Rev. C) Apr. 01, 2013
Application notes A Topical Index of TI LDO Application Notes (Rev. F) Jun. 27, 2019
Technical articles LDO basics: capacitor vs. capacitance Aug. 01, 2018
Technical articles LDO Basics: Preventing reverse current Jul. 25, 2018
Technical articles LDO basics: introduction to quiescent current Jun. 20, 2018
Application notes LDO PSRR Measurement Simplified (Rev. A) Aug. 09, 2017
Technical articles LDO basics: noise – part 1 Jun. 14, 2017
Application notes Linear power for automated industrial systems Jan. 09, 2015
Application notes AN-1148 Linear Regulators: Theory of Operation and Compensation (Rev. B) May 06, 2013
Application notes AN-2122 SM3320-RF-EV Reference Design (Rev. E) May 06, 2013
Application notes SM3320-BATT-EV Charge Controller Reference Design (Rev. C) May 06, 2013
Application notes AN-1482 LDO Regulator Stability Using Ceramic Output Capacitors (Rev. A) Apr. 25, 2013
Application notes Packaging Limits Range of Linear Regulators May 08, 2010
Application notes Digital Designer's Guide to Linear Voltage Regulators & Thermal Mgmt (LDO) (Rev. A) Jun. 04, 2008
Application notes Understanding the Terms and Definitions of LDO Voltage Regulators Oct. 21, 1999

Design & development

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Design tools & simulation

CAD/CAE SYMBOLS Download
SNVC031.ZIP (11637 KB)
CAD/CAE SYMBOLS Download
SNVC033.ZIP (3984 KB)

Reference designs

REFERENCE DESIGNS Download
SM3320-BATT-EV Charge Controller Reference Design
SM3320-BATT-EV The SM72442 MPPT digital controller and SM72295 photovoltaic full bridge drivers are designed to control high efficiency DC/DC conversion used in photovoltaic applications. This application note will detail the usage of those devices in a battery charging application. The reference design is meant (...)

CAD/CAE symbols

Package Pins Download
TO-252 (NDP) 3 View options

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