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LM76003-Q1 Datasheet Preview

LM76003-Q1 Datasheet

Synchronous Step-Down Voltage Regulator

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LM76002-Q1, LM76003-Q1
SNVSAU3B – DECEMBER 2017 – REVISED OCTOBER 2019
LM7600x-Q1 3.5-V to 60-V, 2.5-A/3.5-A Synchronous
Step-Down Voltage Regulator
1 Features
1 AEC-Q100 qualified for automotive applications
– Device temperature grade 1: –40°C to +125°C
ambient operating temperature
– Device HBM ESD classification level 2
– Device CDM ESD classification level C5
• Integrated synchronous rectification
• Input voltage 3.5 V to 60 V (65 V maximum)
• Output voltage 1 V to 95% VIN
• 15-µA Quiescent current in regulation
• Wide voltage conversion range
– tON-MIN = 65 ns (typical)
– tOFF-MIN = 95 ns (typical)
• System-level features
– Synchronization to external clock
– Power-good flag
– Adjustable soft-start (6.3 ms default)
• Pin-selectable FPWM operation
• Adjustable frequency range: 300 kHz to 2.2 MHz
• High-efficiency at light-load architecture (PFM)
• Protection features
– Cycle-by-cycle current limit
– Short-circuit protection with hiccup mode
– Overtemperature thermal shutdown protection
• Create a custom design using the LM76002-
Q1η/LM76003-Q1 with the WEBENCH® Power
Designer
Simplified Schematic
VIN
CIN
CVCC
PVIN BOOT
EN
SW
PGND
LM76003
SS/TRK BIAS
RT
SYNC/MODE
FB
VCC
AGND
CBOOT
L
VOUT
COUT
RFBT
RFBB
2 Applications
Camera applications for commercial vehicles
Infotainment and cluster
Hybrid electric vehicles
Electric vehicles
3 Description
The LM76002-Q1/LM76003-Q1 regulator is an easy-
to-use synchronous step-down DC-DC converter
capable of driving up to 2.5 A (LM76002-Q1) or 3.5 A
(LM76003-Q1) of load current from an input up to
60 V. The LM76002-Q1/LM76003-Q1 provides
exceptional efficiency and output accuracy in a very
small solution size. Peak current-mode control is
employed. Additional features such as adjustable
switching frequency, synchronization, FPWM option,
power-good flag, precision enable, adjustable soft
start, and tracking provide both flexible and easy-to-
use solutions for a wide range of applications.
Automatic frequency foldback at light load and
optional external bias improve efficiency. This device
requires few external components and has a pinout
designed for simple PCB layout with best-in-class
EMI (CISPR25) and thermal performance. Protection
features include input undervoltage lockout, thermal
shutdown, cycle-by-cycle current limit, and short-
circuit protection. The LM76002-Q1/LM76003-Q1
device is available in the WQFN 30-pin leadless
package with wettable flanks.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LM76002-Q1
LM76003-Q1
WQFN (30)
6.00 mm × 4.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
space
Efficiency vs Output Current
(VOUT = 5 V, fSW = 400 kHz, Auto Mode)
100
90
80
70
60
50
40
30
20
10
0
0.001
0.01 0.1
Load Current (A)
VIN = 8 V
VIN = 12 V
VIN = 13.5 V
VIN = 24 V
15
D034
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.




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LM76003-Q1 Datasheet Preview

LM76003-Q1 Datasheet

Synchronous Step-Down Voltage Regulator

No Preview Available !

LM76002-Q1, LM76003-Q1
SNVSAU3B – DECEMBER 2017 – REVISED OCTOBER 2019
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......................................................... 5
6.1 Absolute Maximum Ratings ...................................... 5
6.2 ESD Ratings.............................................................. 5
6.3 Recommended Operating Conditions....................... 5
6.4 Thermal Information .................................................. 6
6.5 Electrical Characteristics........................................... 6
6.6 Timing Characteristics............................................... 8
6.7 Switching Characteristics .......................................... 8
6.8 System Characteristics ............................................. 9
6.9 Typical Characteristics ............................................ 10
7 Detailed Description ............................................ 12
7.1 Overview ................................................................. 12
7.2 Functional Block Diagram ....................................... 12
7.3 Feature Description................................................. 13
7.4 Device Functional Modes........................................ 22
8 Application and Implementation ........................ 24
8.1 Application Information............................................ 24
8.2 Typical Applications ............................................... 24
9 Power Supply Recommendations...................... 42
10 Layout................................................................... 42
10.1 Layout Guidelines ................................................. 42
10.2 Layout Example .................................................... 45
10.3 Thermal Design..................................................... 46
11 Device and Documentation Support ................. 47
11.1 Device Support...................................................... 47
11.2 Receiving Notification of Documentation Updates 47
11.3 Support Resources ............................................... 47
11.4 Trademarks ........................................................... 47
11.5 Electrostatic Discharge Caution ............................ 47
11.6 Glossary ................................................................ 47
12 Mechanical, Packaging, and Orderable
Information ........................................................... 47
4 Revision History
Changes from Revision A (November 2018) to Revision B
Page
• Updated the Thermal Information table .................................................................................................................................. 6
• Changed Figure 17 .............................................................................................................................................................. 18
• Changed "the PGOOD switch is turned off" to "the PGOOD switch is turned on" in the Power Good and Overvoltage
Protection (PGOOD) section ................................................................................................................................................ 20
Changes from Original (October 2018) to Revision A
Page
• Deleted "Operating" from "Junction temperature row" in Absolute Maximum Ratings ......................................................... 5
• Deleted Operating junction TJ from Recommended Operating Conditions ............................................................................ 5
• Updated the Power Good and Overvoltage Protection (PGOOD) section........................................................................... 20
• Updated title of Table 2 ........................................................................................................................................................ 25
2 Submit Documentation Feedback
Copyright © 2017–2019, Texas Instruments Incorporated
Product Folder Links: LM76002-Q1 LM76003-Q1


Part Number LM76003-Q1
Description Synchronous Step-Down Voltage Regulator
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