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LM26003-Q1

ACTIVE

3A Switching Regulator with High Efficiency Sleep Mode

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Data sheet

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LMQ66430-Q1 ACTIVE Automotive 36-V, 3-A low EMI synchronous step-down converter with 1.5-µA IQ Integrated input bypass capacitor and boot cap for lower EMI and smaller footprint, dual-random spread spectrum and lower IQ.

LM26003-Q1

ACTIVE
Data sheet Order now

Product details

Iout (max) (A) 3 Vin (min) (V) 3 Vin (max) (V) 38 Type Converter Switching frequency (min) (kHz) 150 Switching frequency (max) (kHz) 500 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Power good, Pre-Bias Start-Up, Soft Start Adjustable Control mode current mode Vout (min) (V) 1.25 Vout (max) (V) 35 Rating Automotive Operating temperature range (°C) -40 to 125
Iout (max) (A) 3 Vin (min) (V) 3 Vin (max) (V) 38 Type Converter Switching frequency (min) (kHz) 150 Switching frequency (max) (kHz) 500 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Power good, Pre-Bias Start-Up, Soft Start Adjustable Control mode current mode Vout (min) (V) 1.25 Vout (max) (V) 35 Rating Automotive Operating temperature range (°C) -40 to 125
HTSSOP (PWP) 20 41.6 mm² 6.5 x 6.4
  • LM26003-Q1 is an Automotive-Grade Product
    That is AEC-Q100 Grade 1 Qualified (–40°C to
    +125°C Operating Junction Temperature)
  • High-Efficiency Sleep Mode
  • 40-µA Typical Iq in Sleep Mode
  • 10.8-µA Typical Iq in Shutdown Mode
  • 3.0-V Minimum Input Voltage
  • 4.0-V to 38-V Continuous Input Range
  • 1.5% Reference Accuracy
  • Cycle-by-Cycle Current Limit
  • Adjustable Frequency (150 kHz to 500 kHz)
  • Synchronizable to an External Clock
  • Power Good Flag
  • Forced PWM Function
  • Adjustable Soft-Start
  • 20-Pin HTSSOP Package
  • Thermal Shut Down
  • LM26003-Q1 is an Automotive-Grade Product
    That is AEC-Q100 Grade 1 Qualified (–40°C to
    +125°C Operating Junction Temperature)
  • High-Efficiency Sleep Mode
  • 40-µA Typical Iq in Sleep Mode
  • 10.8-µA Typical Iq in Shutdown Mode
  • 3.0-V Minimum Input Voltage
  • 4.0-V to 38-V Continuous Input Range
  • 1.5% Reference Accuracy
  • Cycle-by-Cycle Current Limit
  • Adjustable Frequency (150 kHz to 500 kHz)
  • Synchronizable to an External Clock
  • Power Good Flag
  • Forced PWM Function
  • Adjustable Soft-Start
  • 20-Pin HTSSOP Package
  • Thermal Shut Down

The LM26003 is a switching regulator designed for the high-efficiency requirements of applications with standby modes. The device features a low-current sleep mode to maintain efficiency under light-load conditions and current-mode control for accurate regulation over a wide input voltage range. Quiescent current is reduced to 10.8 µA typically in shutdown mode and less than 40 µA in sleep mode. Forced PWM mode is also available to disable sleep mode.

The LM26003 device can deliver up to 3 A of continuous load current with a fixed current limit, through the internal N-channel switch. The part has a wide input voltage range of 4.0 V to 38 V and can operate with input voltages as low as 3 V during line transients.

Operating frequency is adjustable from 150 kHz to 500 kHz with a single resistor and can be synchronized to an external clock.

Other features include Power Good, adjustable soft-start, enable pin, input undervoltage protection, and an internal bootstrap diode for reduced component count.

The LM26003 is a switching regulator designed for the high-efficiency requirements of applications with standby modes. The device features a low-current sleep mode to maintain efficiency under light-load conditions and current-mode control for accurate regulation over a wide input voltage range. Quiescent current is reduced to 10.8 µA typically in shutdown mode and less than 40 µA in sleep mode. Forced PWM mode is also available to disable sleep mode.

The LM26003 device can deliver up to 3 A of continuous load current with a fixed current limit, through the internal N-channel switch. The part has a wide input voltage range of 4.0 V to 38 V and can operate with input voltages as low as 3 V during line transients.

Operating frequency is adjustable from 150 kHz to 500 kHz with a single resistor and can be synchronized to an external clock.

Other features include Power Good, adjustable soft-start, enable pin, input undervoltage protection, and an internal bootstrap diode for reduced component count.
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Technical documentation

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Type Title Date
* Data sheet LM26003-xx 3-A Switching Regulator With High Efficiency Sleep Mode datasheet (Rev. F) PDF | HTML 06 Feb 2015
Technical article Spread Spectrum: Headache tablet or vitamin pill? PDF | HTML 18 May 2015
EVM User's guide AN-1884 LM26003 Evaluation Board (Rev. B) 24 Apr 2013

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

LM26003EVAL — LM26003 - 3A Switching Regulator with High Efficiency Sleep Mode Evaluation Module

The LM26003 evaluation board is designed to demonstrate the capabilities of the LM26003 switching regulator. The LM26003 eval board can be configured to provide an output of 3.3V at up to 3A from the input range of 4V to 38V. The nominal operating frequency is 300kHz and can be synchronized from (...)

User guide: PDF
Not available on TI.com
Simulation model

LM26003 PSpice Average Model

SNVM185.ZIP (57 KB) - PSpice Model
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Simulation model

LM26003 Unencrypted PSpice Average Model

SNVM874.ZIP (1 KB) - PSpice Model
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Reference designs

PMP9476 — 15W Automotive Start Stop Power Supply

PMP9476 is non-sync buck converter plus a non-sync boost controller accepts an input voltage of 3.5V to 40V, and outputs 5V, capable of providing 3A of current to the load.
Test report: PDF
Schematic: PDF
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HTSSOP (PWP) 20 View options
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