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LM25010SD Datasheet Preview

LM25010SD Datasheet

1-A Step-Down Switching Regulator

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LM25010, LM25010-Q1
SNVS419E – DECEMBER 2005 – REVISED MAY 2016
LM25010, LM25010-Q1 42-V, 1-A Step-Down Switching Regulator
1 Features
1 LM25010-Q1 Qualified for Automotive
Applications
• AEC-Q100 Qualified With the Following Results:
– Device Temperature Grade 1: –40°C to 125°C
Ambient Operating Temperature Range
– Device Temperature Grade 0: –40°C to 150°C
Ambient Operating Temperature Range
– Device HBM ESD Classification Level 2
– Device CDM ESD Classification Level C5
• Wide 6-V to 42-V Input Voltage Range
• Valley Current Limiting at 1.25 A
• Programmable Switching Frequency Up To 1 MHz
• Integrated N-Channel Buck Switch
• Integrated High Voltage Bias Regulator
• No Loop Compensation Required
• Ultra-Fast Transient Response
• Nearly Constant Operating Frequency With Line
and Load Variations
• Adjustable Output Voltage
• 2.5 V, ±2% Feedback Reference
• Programmable Soft Start
• Thermal Shutdown
2 Applications
• Non-Isolated Telecommunications Regulators
• Secondary Side Post Regulators
• Automotive Electronics
3 Description
The LM25010 features all the functions needed to
implement a low-cost, efficient, buck regulator
capable of supplying in excess of 1-A load current.
This high voltage regulator integrates an N-Channel
Buck Switch, and is available in thermally enhanced
10-pin WSON and 14-pin HTSSOP packages. The
constant ON-time regulation scheme requires no loop
compensation resulting in fast load transient
response and simplified circuit implementation. The
operating frequency remains constant with line and
load variations due to the inverse relationship
between the input voltage and the ON-time. The
valley current limit detection is set at 1.25 A.
Additional features include: VCC undervoltage
lockout, thermal shutdown, gate drive undervoltage
lockout, and maximum duty cycle limiter.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LM25010x
WSON (10)
HTSSOP (14)
4.00 mm × 4.00 mm
4.40 mm × 5.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
6V - 42V
Input
C1
SHUTDOWN
RON
C6
Basic Step-Down Regulator
VIN
VCC
LM25010
BST
RON/SD
SW
SS
RTN
SGND
ISEN
FB
C3
C4
D1
L1
R1
R2
VOUT
R3
C2
Copyright © 2016, Texas Instruments Incorporated
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.




etcTI

LM25010SD Datasheet Preview

LM25010SD Datasheet

1-A Step-Down Switching Regulator

No Preview Available !

LM25010, LM25010-Q1
SNVS419E – DECEMBER 2005 – REVISED MAY 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ..................................... 4
6.2 ESD Ratings: LM25010 ............................................ 4
6.3 ESD Ratings: LM25010-Q1, LM25010-Q0 ............... 4
6.4 Recommended Operating Ratings............................ 4
6.5 Thermal Information .................................................. 5
6.6 Electrical Characteristics........................................... 5
6.7 Switching Characteristics .......................................... 6
6.8 Typical Characteristics .............................................. 7
7 Detailed Description .............................................. 8
7.1 Overview ................................................................... 8
7.2 Functional Block Diagram ......................................... 8
7.3 Feature Description................................................... 8
7.4 Device Functional Modes........................................ 12
8 Application and Implementation ........................ 13
8.1 Application Information............................................ 13
8.2 Typical Application .................................................. 13
8.3 Do's and Don'ts ....................................................... 19
9 Power Supply Recommendations...................... 20
10 Layout................................................................... 20
10.1 Layout Guidelines ................................................. 20
10.2 Layout Example .................................................... 21
11 Device and Documentation Support ................. 22
11.1 Related Links ........................................................ 22
11.2 Community Resources.......................................... 22
11.3 Trademarks ........................................................... 22
11.4 Electrostatic Discharge Caution ............................ 22
11.5 Glossary ................................................................ 22
12 Mechanical, Packaging, and Orderable
Information ........................................................... 22
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision D (February 2013) to Revision E
Page
• Added Device Information table, ESD Ratings table, Feature Description section, Device Functional Modes section,
Application and Implementation section, Power Supply Recommendations section, Layout section, Device and
Documentation Support section, and Mechanical, Packaging, and Orderable Information section....................................... 1
Changes from Revision C (February 2013) to Revision D
Page
• Changed layout of National Data Sheet to TI format ............................................................................................................. 1
2
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Copyright © 2005–2016, Texas Instruments Incorporated
Product Folder Links: LM25010 LM25010-Q1


Part Number LM25010SD
Description 1-A Step-Down Switching Regulator
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