Controller. LM3409-Q1 Datasheet

LM3409-Q1 Datasheet PDF


Part

LM3409-Q1

Description

P-FET Buck Controller

Manufacture

etcTI

Page 30 Pages
Datasheet
Download LM3409-Q1 Datasheet


LM3409-Q1 Datasheet
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LM3409, LM3409-Q1, LM3409HV, LM3409HV-Q1
SNVS602L – MARCH 2009 – REVISED JUNE 2016
LM3409, -Q1, LM3409HV, -Q1 P-FET Buck Controller for High-Power LED Drivers
1 Features
1 LM3409-Q1 and LM3409HV-Q1 are Automotive
Grade Products: AEC-Q100 Grade 1 Qualified
• 2-, 1-A Peak MOSFET Gate Drive
• VIN Range: 6 V to 42 V (LM3409, LM3409-Q1)
• VIN Range: 6 V to 75 V (LM3409HV, LM3409HV-
Q1)
• Differential, High-Side Current Sense
• Cycle-by-Cycle Current Limit
• No Control Loop Compensation Required
• 10,000:1 PWM Dimming Range
• 250:1 Analog Dimming Range
• Supports All-Ceramic Output Capacitors and
Capacitor-less Outputs
• Low-Power Shutdown and Thermal Shutdown
• Thermally Enhanced 10-Pin, HVSSOP Package
2 Applications
• LED Driver
• Constant Current Source
• Automotive Lighting
• General Illumination
3 Description
The LM3409, LM3409-Q1, LM3409HV, and
LM3409HV-Q1 are P-channel MOSFET (PFET)
controllers for step-down (buck) current regulators.
They offer wide input voltage range, high-side
differential current sense with low adjustable
threshold voltage and fast output enable/disable
function and a thermally enhanced 10-pin, HVSSOP
package. These features combine to make the
LM3409 family of devices ideal for use as constant
current sources for driving LEDs where forward
currents up to 5 A are easily achievable.
The LM3409 devices use constant off-time (COFT)
control to regulate an accurate constant current
without the need for external control loop
compensation. Analog and PWM dimming are easy to
implement and result in a highly linear dimming range
with excellent achievable contrast ratios.
Programmable UVLO, low-power shutdown, and
thermal shutdown complete the feature set.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LM3409
HVSSOP (10)
PDIP (14)
3.00 mm × 3.00 mm
19.177 mm × 6.35 mm
LM3409-Q1
LM3409HV
HVSSOP (10)
3.00 mm × 3.00 mm
LM3409HV-Q1
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application Schematic
RUV2
RUV1
1
UVLO
2
IADJ
10
VIN
9
VCC
CF
VIN
CIN
ROFF
COFF
3
EN
LM3409/HV
8
CSP
4
COFF
5
GND
DAP
7
CSN
6
PGATE
RSNS
Q1
L1
D1
VO
ILED
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.

LM3409-Q1 Datasheet
LM3409, LM3409-Q1, LM3409HV, LM3409HV-Q1
SNVS602L – MARCH 2009 – REVISED JUNE 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Device Comparison Table..................................... 3
6 Pin Configuration and Functions ......................... 3
7 Specifications......................................................... 4
7.1 Absolute Maximum Ratings ...................................... 4
7.2 ESD Ratings.............................................................. 4
7.3 Recommended Operating Conditions....................... 4
7.4 Thermal Information .................................................. 5
7.5 Electrical Characteristics........................................... 6
7.6 Typical Characteristics .............................................. 7
8 Detailed Description ............................................ 10
8.1 Overview ................................................................. 10
8.2 Functional Block Diagram ....................................... 10
8.3 Feature Description................................................. 11
8.4 Device Functional Modes........................................ 18
9 Application and Implementation ........................ 19
9.1 Application Information............................................ 19
9.2 Typical Applications ................................................ 23
10 Power Supply Recommendations ..................... 37
11 Layout................................................................... 37
11.1 Layout Guidelines ................................................. 37
11.2 Layout Example .................................................... 37
12 Device and Documentation Support ................. 38
12.1 Device Support...................................................... 38
12.2 Related Links ........................................................ 38
12.3 Community Resources.......................................... 38
12.4 Trademarks ........................................................... 38
12.5 Electrostatic Discharge Caution ............................ 38
12.6 Glossary ................................................................ 38
13 Mechanical, Packaging, and Orderable
Information ........................................................... 38
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision K (July 2014) to Revision L
Page
• Corrected package family reference in Features section ....................................................................................................... 1
• Corrected package family reference in Device Information table........................................................................................... 1
• Added Device Comparison table ............................................................................................................................................ 3
• Corrected typographical error in package name reference in Pin Configuration and Functions section ............................... 3
• Corrected typographical error in Absolute Maximum Ratings table ....................................................................................... 4
• Corrected typographical error in package name reference in ESD Ratings table ................................................................. 4
• Corrected package family reference in Thermal Information table......................................................................................... 5
Changes from Revision J (May 2013) to Revision K
Page
• Added ESD Ratings table, Feature Description section, Device Functional Modes, 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 I (May 2013) to Revision J
Page
• Changed layout of National Data Sheet to TI format ............................................................................................................ 1
2 Submit Documentation Feedback
Copyright © 2009–2016, Texas Instruments Incorporated
Product Folder Links: LM3409 LM3409-Q1 LM3409HV LM3409HV-Q1


Features Datasheet pdf Product Folder Sample & Buy Technical Documents Tools & Software Support & Community Reference Design LM3409, LM 3409-Q1, LM3409HV, LM3409HV-Q1 SNVS602L – MARCH 2009 – REVISED JUNE 2016 L M3409, -Q1, LM3409HV, -Q1 P-FET Buck Co ntroller for High-Power LED Drivers 1 Features •1 LM3409-Q1 and LM3409HV-Q1 are Automotive Grade Products: AEC-Q10 0 Grade 1 Qualified • 2-Ω, 1-A Peak MOSFET Gate Drive • VIN Range: 6 V t o 42 V (LM3409, LM3409-Q1) • VIN Rang e: 6 V to 75 V (LM3409HV, LM3409HV- Q1) • Differential, High-Side Current Se nse • Cycle-by-Cycle Current Limit No Control Loop Compensation Required • 10,000:1 PWM Dimming Range • 250 :1 Analog Dimming Range • Supports Al l-Ceramic Output Capacitors and Capacit or-less Outputs • Low-Power Shutdown and Thermal Shutdown • Thermally Enha nced 10-Pin, HVSSOP Package 2 Applicati ons • LED Driver • Constant Current Source • Automotive Lighting • Gen eral Illumination 3 Description The LM3409, LM3409-Q1, LM3409HV, and LM3409HV-Q1 are P-channel MOSFE.
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