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LMR14006

Buck Regulator

The LMR14006 is a buck regulator from Texas Instruments. View the full LMR14006 datasheet below including key specifications, electrical characteristics, absolute maximum ratings.

Official LMR14006 datasheet (PDF) — the source this page was extracted from.

Manufacturer

Texas Instruments

Category

Switching Regulators (Buck)

Package

SOT-23-THIN-6

LMR14006 Key Specifications

ParameterValue
ProtectionPulse-by-pulse current limit, thermal shutdown
Output Current600 mA (max)
Feedback Voltage0.765 V (typ)
Shutdown Current1 μA
Package Body Size2.9 mm × 1.6 mm
Input Voltage Range4 V to 40 V
Switching Frequency1.1 MHz (X version), 2.1 MHz (Y version)
Thermal Resistance (RθJA)102 °C/W
Thermal Shutdown Threshold170°C (typ), restart below 160°C (typ)
Standby Current (Sleep Mode)28 μA
Operating Junction Temperature-40°C to 125°C

LMR14006 Overview

Part: Texas Instruments LMR14006

Type: Buck Regulator

Description: A 4–40 V input, 600 mA buck regulator with ultra-low 28 μA standby current in sleep mode, 1 μA shutdown current, and fixed switching frequencies of 1.1 MHz or 2.1 MHz.

Operating Conditions:

  • Supply voltage: 4–40 V
  • Operating temperature: -40 to 125 °C (junction)
  • Output current: up to 600 mA
  • Switching frequency: 1.1 MHz (X version) or 2.1 MHz (Y version)

Absolute Maximum Ratings:

  • Max supply voltage: 45 V (VIN to GND)
  • Max continuous current: 1200 mA (current limit)
  • Max junction/storage temperature: 150 °C (junction operation), 165 °C (storage)

Key Specs:

  • Operating input voltage: 4 V to 40 V
  • Shutdown supply current: 1 μA (typ) at V EN = 0V
  • Operating quiescent current (non-switching): 28 μA (typ) at no load, V IN = 12V
  • Feedback voltage: 0.765 V (typ)
  • High-side MOSFET On-resistance: 600 mΩ (typ) at V IN = 12V, CB to SW = 5.8V
  • Current limit: 1200 mA (typ) at V IN = 12V, T J = 25°C
  • Switching frequency (LMR14006X): 1100 kHz (typ)
  • Switching frequency (LMR14006Y): 2100 kHz (typ)
  • Thermal shutdown threshold: 170 °C (typ)

Features:

  • Ultra Low 28 μA Standby Current in Sleep Mode
  • Input Voltage Range 4 V to 40 V
  • 1 μA Shutdown Current
  • High Duty Cycle Operation Supported
  • Output Current up to 600 mA
  • 1.1 MHz and 2.1 MHz Switching Frequency
  • Internal Compensation
  • High Voltage Enable Input
  • Internal Soft Start
  • Over Current Protection
  • Over Temperature Protection
  • Small Overall Solution Size (TSOT-6L Package)

Applications:

  • Industrial Distributed Power Systems
  • Automotive
  • Battery Powered Equipment
  • Portable Handheld Instruments
  • Portable Media Players

Package:

  • TSOT-6L (2.9mm × 1.6 mm)

LMR14006 Features

  • 1 · Ultra Low 28 μA Standby Current in Sleep Mode
  • Input Voltage Range 4 V to 40 V
  • 1 μA Shutdown Current
  • High Duty Cycle Operation Supported
  • Output Current up to 600 mA
  • 1.1 MHz and 2.1 MHz Switching Frequency
  • Internal Compensation
  • High Voltage Enable Input
  • Internal Soft Start
  • Over Current Protection
  • Over Temperature Protection
  • Small Overall Solution Size (TSOT-6L Package)

LMR14006 Applications

  • Industrial Distributed Power Systems
  • Automotive
  • Battery Powered Equipment
  • Portable Handheld Instruments
  • Portable Media Players

LMR14006 Pin Configuration

CB

1

2

3

4

5

6

LMR14006

GND

FB

SW

VIN

SHDN

PIN 1 ID

DDC Package TSOP-6L Top View

LMR14006 Electrical Characteristics

VIN = /SHDN = 12V, TA = 25°C, unless otherwise specified.

SYMBOLPARAMETERCONDITIONSMINTYPMAXUNIT
VIN (Input Power Supply)VIN (Input Power Supply)VIN (Input Power Supply)VIN (Input Power Supply)VIN (Input Power Supply)VIN (Input Power Supply)VIN (Input Power Supply)
V INOperating input voltage440V
I SHDNShutdown supply currentV EN = 0V13μA
I QOperating quiescent current (non- switching)no load, V IN = 12V28μA
UVLOUndervoltage lockout thresholdsRising threshold4V
UVLOUndervoltage lockout thresholdsFalling threshold3
SHDNSHDNSHDNSHDNSHDNSHDNSHDN
V SHDN_ThreRising SHDN Threshold Voltage1.051.251.38V
I SHDN_PINInput currentSHDN = 2.3V-4.2μA
I SHDN_PINInput currentSHDN = 0.9V-1
I SHDN_HYSHysteresis current-3μA
HIGH-SIDE MOSFETHIGH-SIDE MOSFETHIGH-SIDE MOSFETHIGH-SIDE MOSFETHIGH-SIDE MOSFETHIGH-SIDE MOSFETHIGH-SIDE MOSFET
R DS_ONOn-resistanceV IN = 12V, CB to SW = 5.8V600m Ω
VOLTAGE REFERENCE (FB PIN)VOLTAGE REFERENCE (FB PIN)VOLTAGE REFERENCE (FB PIN)VOLTAGE REFERENCE (FB PIN)VOLTAGE REFERENCE (FB PIN)VOLTAGE REFERENCE (FB PIN)VOLTAGE REFERENCE (FB PIN)
V FBFeedback voltage0.7470.7650.782V
CURRENT LIMITCURRENT LIMITCURRENT LIMITCURRENT LIMITCURRENT LIMITCURRENT LIMITCURRENT LIMIT
I LIMITCurrent limitV IN = 12V, T J = 25°C1200mA
THERMAL PERFORMANCETHERMAL PERFORMANCETHERMAL PERFORMANCETHERMAL PERFORMANCETHERMAL PERFORMANCETHERMAL PERFORMANCETHERMAL PERFORMANCE
T SHDNThermal shutdown threshold170°C
T HYSHysteresis10°C

LMR14006 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted) (1)

PARAMETERMINMAXUNIT
Input VoltagesV IN to GND-0.345V
Input VoltagesSHDN to GND-0.345V
Input VoltagesFB to GND-0.37V
Input VoltagesCB to SW-0.37V
Output VoltagesSW to GND-145V
Output VoltagesSW to GND less than 30ns transients-245V
T J Operation Junction Temperature-40150°C

LMR14006 Recommended Operating Conditions

Over operating free-air temperature range (unless otherwise noted)

PARAMETERMINMAXUNIT
Buck RegulatorV IN440V
Buck RegulatorCB446V
Buck RegulatorCB to SW-0.36V
Buck RegulatorSW-140
Buck RegulatorFB05.5V
ControlSHDN040V
TemperatureOperating junction temperature range, T J-40125°C

LMR14006 Thermal Information

THERMAL METRIC (1)TSOT (6 PINS)UNIT
R θ JAJunction-to-ambient thermal resistance102°C/W
R θ JCtopJunction-to-case (top) thermal resistance36.9°C/W
R θ JBJunction-to board characterization parameter28.4°C/W

LMR14006 Typical Application

Figure 9. LMR14006 Design Example with 2.1 MHz Switching Frequency

Below are the recommended typical output voltage inductor/capacitor combinations for optimized total solution size.

P/NVout(V)R1(k Ω )R2(k Ω )L( μ H)Cout( μ F)
LMR14006 Y554.9(1%)10(1%)3.322
LMR14006 Y12147(1%)10(1%)3.310

Figure 10. Application Circuit, 12 V Output

More part numbers on this datasheet

Their pages show this same datasheet. Some are linked through their part family rather than checked part by part, so confirm the exact part in the ordering information.

Other Switching Regulators (Buck)

  • TPS54302 – Texas Instruments, Synchronous Step-Down Converter
  • MAX20730 – Analog Devices, Synchronous Switching Regulator
  • TLV62568 – Texas Instruments, Synchronous Buck Converter
  • LM2596 – onsemi, Step-Down Voltage Regulator
  • AP63203WU – Diodes Incorporated, Synchronous Buck Converter
  • TPS562200 – Texas Instruments, Synchronous Buck Converter
  • AP63357DV-7 – Diodes Incorporated, Synchronous Buck Converter
  • MP2344GJ-Z – Monolithic Power Systems, Synchronous Step-Down Converter

All Switching Regulators (Buck) datasheetsAll Texas Instruments datasheets (2,442)

Data on this page is extracted from publicly available manufacturer datasheets using automated tools including AI. It may contain errors or omissions. Always verify specifications against the official manufacturer datasheet before making design or purchasing decisions. See our Terms of Service. Rights holders can submit a takedown request.

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