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LM5150-Q1 Datasheet Preview

LM5150-Q1 Datasheet

Wide VIN Automotive Boost Controller

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LM5150-Q1
SNVSAP6 – SEPTEMBER 2017
LM5150-Q1 Wide VIN Automotive Low IQ Boost Controller
1 Features
1 AEC-Q100 Qualified:
– Device Temperature Grade 1: –40°C to
+125°C Ambient Operating Temperature
Range
– Device HBM ESD Classification Level 2
– Device CDM ESD Classification Level C4B
• Wide VIN Input Range From 1.5 V to 42 V When
VOUT 5 V (65-V Absolute Maximum)
• Low Shutdown Current (IQ 5 µA)
• Low Standby Current (IQ 15 µA)
• Four Programmable Output Voltage Options and
Two Selectable Configurations
– 6.8 V, 7.5 V, 8.5 V, or 10.5 V
– Start-Stop or E-Call Configurations
• Adjustable Switching Frequency From 220 kHz to
2.3 MHz
• Automatic Wake-Up and Standby Mode Transition
• Optional Clock Synchronization
• Boost Status Indicator
• 1.5-A Peak MOSFET Gate Driver
• Adjustable Cycle-by-Cycle Current Limit
• Thermal Shutdown
• 16-Pin WQFN With Wettable Flanks
• Create a Custom Design Using the LM5150-Q1
With the WEBENCH® Power Designer
3 Description
The LM5150-Q1 device is a wide input range
automatic boost controller. The device is suitable for
use as a pre-boost converter which maintains the
output voltage from a vehicle battery during
automotive cranking or from a back-up battery during
the loss of vehicle battery.
The LM5150-Q1 switching frequency is programmed
by a resistor from 220 kHz to 2.3 MHz. Fast switching
(2.2-MHz) minimizes AM band interference and
allows for a small solution size and fast transient
response.
The LM5150-Q1 operates in low IQ standby mode
when the input or output voltage is above the preset
standby thresholds and automatically wakes up when
the output voltage drops below the preset wake-up
threshold.
The device transients in and out of the low IQ standby
mode to extend battery life at light load. A single
resistor programs the target output regulation voltage
as well as the configuration. Additional features
include low shutdown current, boost status indicator,
adjustable cycle-by-cycle current limit, and thermal
shutdown.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LM5150-Q1
WQFN (16)
4.00 mm × 4.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
2 Applications
• Automotive Start-Stop System
• Automotive Emergency Call System
• Battery-Powered Boost Converters
Typical Application Circuit
VSUPPLY
VLOAD
Efficiency (VLOAD= 6.8 V, FSW= 440 kHz)
100
95
90
VIN LO
CS AGND
PGND VOUT
STATUS
SYNC
LM5150
EN
COMP
RT VSET VCC
AVCC
Copyright © 2017, Texas Instruments Incorporated
1
85
80
75
70
0
VSUPPLY=5.5V
VSUPPLY=4.5V
VSUPPLY=3.5V
VSUPPLY=2.5V
0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7
Load Current (A)
3
D008
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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LM5150-Q1 Datasheet Preview

LM5150-Q1 Datasheet

Wide VIN Automotive Boost Controller

No Preview Available !

LM5150-Q1
SNVSAP6 – SEPTEMBER 2017
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.............................................................. 4
6.3 Recommended Operating Conditions....................... 5
6.4 Thermal Information .................................................. 5
6.5 Electrical Characteristics........................................... 5
6.6 Typical Characteristics .............................................. 8
7 Detailed Description ............................................ 10
7.1 Overview ................................................................. 10
7.2 Functional Block Diagram ....................................... 11
7.3 Feature Description................................................. 11
7.4 Device Functional Modes........................................ 17
8 Application and Implementation ........................ 21
8.1 Application Information............................................ 21
8.2 Typical Application ................................................. 24
8.3 System Examples ................................................... 31
9 Power Supply Recommendations...................... 33
10 Layout................................................................... 33
10.1 Layout Guidelines ................................................. 33
10.2 Layout Example .................................................... 34
11 Device and Documentation Support ................. 35
11.1 Device Support...................................................... 35
11.2 Receiving Notification of Documentation Updates 35
11.3 Community Resources.......................................... 35
11.4 Trademarks ........................................................... 35
11.5 Electrostatic Discharge Caution ............................ 35
11.6 Glossary ................................................................ 35
12 Mechanical, Packaging, and Orderable
Information ........................................................... 36
4 Revision History
DATE
September 2017
REVISION
*
NOTES
Initial release.
2 Submit Documentation Feedback
Product Folder Links: LM5150-Q1
Copyright © 2017, Texas Instruments Incorporated


Part Number LM5150-Q1
Description Wide VIN Automotive Boost Controller
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