LM26001 - 1.5A Switching Regulator with High Efficiency Sleep Mode

LM26001 - 1.5A Switching Regulator with High Efficiency Sleep Mode from the PowerWise® Family

Datasheet	Packaging	Samples & Pricing	Eval. Boards	Reliability	Design Tools	Application Notes	Knowledge Base

Features

•	LM26001Q 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 µA typical Iq in shutdown mode
•	3.0V minimum input voltage
•	4.0V to 38V 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
•	TSSOP-16 exposed pad package
•	Thermal Shut Down

General Description

The LM26001 is a switching regulator designed for the high efficiency requirements of applications with stand-by modes. More...

Applications

•	Automotive Telematics
•	Navigation systems
•	In-Dash Instrumentation
•	Battery Powered Applications
•	Stand-by power for home gateways/set-top boxes

Typical Application

*click for larger image

Parameters Values

Output Current 1500 mA

Input Min Voltage 3 Volt

Input Max Voltage 38 Volt

Output Min 1.25 Volt

Output Max 35 Volt

Frequency Min 150 kHz

Frequency Max 500 kHz

Efficiency (peak) 93 %

On/Off Pin Yes

Error Flag Yes

SoftStart Yes

Sync Pin Yes

Inverting No

Flyback No

RegType Switching Regulator

Temperature Min -40 deg C

Temperature Max 125 deg C

Adjustable Output Yes

Adj Switch Frequency Yes

PWM Mode Current

Topology Buck

Special Features High efficiency sleep mode, 1.5% output voltage accuracy, Quiescent current 40uA

Step-Down Yes

Multiple Output Capability No

Output Power Undefined Watt

Output Voltage Undefined Volt

Output Range 1.25V to 35V

Switching Frequency Undefined kHz

Feedback Voltage 1.23 Volt

Regulator Family Undefined

AEC Q-100 Automotive Grade 1

Automotive Yes

PowerWise Yes

Synchronous Rectification No

Typical Performance

*click for larger image

Also Recommended

LM26001B▲	18V Max Input Voltage
LM26003▲	3A Version

Additional Resources

Online Seminars

Requirements and Solutions for Automotive Power Management Applications

Design Tools

Application Notes

Block Diagram

*click for larger image

Datasheet

RoHS Compliance Information	Size in Kbytes	Date
LM26001/LM26001Q 1.5A Switching Regulator with High Efficiency Sleep Mode	526 Kbytes	9-Apr-09	Download
LM26001/LM26001Q 1.5A Switching Regulator with High Efficiency Sleep Mode (Japanese)	629 Kbytes

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Package Availability, Models, Samples & Pricing

Part Number

Package

Factory Lead Time

Models

Samples &
Electronic
Orders

Budgetary Pricing

Std
Pack
Size

Package
Marking
Format

Type

Pins

Spec.

MSL
Rating

Peak
Reflow

RoHS
Report

CAD
Symbols

Weeks

Qty

$US each

LM26001EVAL

1.5A Switching Regulator with High Efficiency Sleep Mode

Full production

N/A

$73.50

8 weeks

N/A

LM26001QMXA

TSSOP EXP PAD

NOPB

260

RoHS

Download

Full production

N/A

1K+

$2.95

rail
of
92

NSUZXYTT
L26001
QMXA

6 weeks

N/A

LM26001MXA

TSSOP EXP PAD

NOPB
STD

1
1

260
260

RoHS

Download

Full production

N/A

1K+

$2.85

rail
of
92

NSUZXYTT
L26001
MXA

6 weeks

500

LM26001QMXAX

TSSOP EXP PAD

NOPB

260

RoHS

Download

Full production

N/A

1K+

$2.95

reel
of
2500

NSUZXYTT
L26001
QMXA

8 weeks

N/A

LM26001MXAX

TSSOP EXP PAD

NOPB
STD

1
1

260
260

RoHS

Download

Full production

N/A

1K+

$2.85

reel
of
2500

NSUZXYTT
L26001
MXA

6 weeks

5000

General Description

The LM26001 is a switching regulator designed for the high efficiency requirements of applications with stand-by 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 µA typically in shutdown mode and less than 40 µA in sleep mode. Forced PWM mode is also available to disable sleep mode.

The LM26001 can deliver up to 1.5A of continuous load current with a fixed current limit, through the internal N-channel switch. The part has a wide input voltage range of 4.0V to 38V and can operate with input voltages as low as 3V 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 under-voltage protection, and an internal bootstrap diode for reduced component count.

Reliability Metrics

Part Number	Process	EFR Sample Size	LTA Device Hours	FITS	MTTF (Hours)
LM26001MXA	ABCD150	34175	4234000	1	1201409060
LM26001MXAX	ABCD150	34175	4234000	1	1201409060
LM26001QMXA	ABCD150	34175	4234000	1	1201409060
LM26001QMXAX	ABCD150	34175	4234000	1	1201409060

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.

Design Tools

Title	Size in Kbytes	Date
Article - Counting the Micro Amps			View

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Application Notes

Title	Size in Kbytes	Date
AN-1454: Application Note 1454 LM26001 Evaluation Board	794 Kbytes	1-Sep-06	Download

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More Application Notes

Title	Size in Kbytes	Date
AN-1884: Application Note 1884 LM26003 Evaluation Board	507 Kbytes	28-Aug-08	Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.

[Information as of 7-Nov-2009]