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LMR14006Y

Buck Regulator

The LMR14006Y is a buck regulator from Texas Instruments. View the full LMR14006Y datasheet below including electrical characteristics, absolute maximum ratings.

Manufacturer

Texas Instruments

Category

Switching Regulators (Buck)

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)

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)

Applications

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

Pin Configuration

CB

1

2

3

4

5

6

LMR14006

GND

FB

SW

VIN

SHDN

PIN 1 ID

DDC Package TSOP-6L Top View

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

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

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

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

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

Related Variants

The following components are covered by the same datasheet.

Part NumberManufacturerPackage
LMR14006Texas Instruments—
LMR14006XTexas Instruments—
LMR14006XDDCRTexas Instruments—
LMR14006XDDCR.ATexas Instruments—
LMR14006XDDCRG4Texas Instruments—
LMR14006XDDCTTexas Instruments—
LMR14006XDDCT.ATexas Instruments—
LMR14006YDDCRTexas Instruments—
LMR14006YDDCR.ATexas Instruments—
LMR14006YDDCRG4Texas Instruments—
LMR14006YDDCTTexas Instruments—
LMR14006YDDCT.ATexas Instruments—
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