LM26003

ACTIVE

3A Switching Regulator with High Efficiency Sleep Mode

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Data sheet

document-pdfAcrobat LM26003-xx 3-A Switching Regulator With High Efficiency Sleep Mode datasheet (Rev. F) PDF | HTML

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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

ACTIVE

Data sheet

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Product details

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Topology

Buck

Type

Converter

Iout (max) (A)

3

Vin (min) (V)

3

Vin (max) (V)

38

Switching frequency (min) (kHz)

150

Switching frequency (max) (kHz)

500

Features

Enable, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up

Control mode

current mode

Vout (min) (V)

1.25

Vout (max) (V)

35

Iq (typ) (µA)

40

Duty cycle (max) (%)

98

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Topology

Buck

Type

Converter

Iout (max) (A)

3

Vin (min) (V)

3

Vin (max) (V)

38

Switching frequency (min) (kHz)

150

Switching frequency (max) (kHz)

500

Features

Enable, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up

Control mode

current mode

Vout (min) (V)

1.25

Vout (max) (V)

35

Iq (typ) (µA)

40

Duty cycle (max) (%)

98

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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	Type	Title		Date
*	Data sheet	LM26003-xx 3-A Switching Regulator With High Efficiency Sleep Mode datasheet (Rev. F)	PDF \| HTML	06 Feb 2015
	Selection guide	Power Management Guide 2018 (Rev. R)		25 Jun 2018
	Technical article	Design an automotive cluster power supply	PDF \| HTML	16 Oct 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