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LM5150-Q1_V01 PDF预览

LM5150-Q1_V01

更新时间: 2024-09-27 02:51:39
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德州仪器 - TI /
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描述
LM5150-Q1 Wide VIN Automotive Low IQ Boost Controller

LM5150-Q1_V01 数据手册

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LM5150-Q1  
SNVSAP6B SEPTEMBER 2017REVISED JUNE 2020  
LM5150-Q1 Wide VIN Automotive Low IQ Boost Controller  
1 Features  
2 Applications  
1
AEC-Q100 qualified:  
Automotive start-stop system  
Automotive emergency call system  
Battery-powered boost converters  
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  
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  
Functional Safety-Capable  
Documentation available to aid functional  
safety system design  
output voltage from  
a
vehicle battery during  
automotive cranking or from a back-up battery during  
the loss of vehicle battery.  
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)  
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.  
Four programmable output voltage options and  
two selectable configurations  
6.8 V, 7.5 V, 8.5 V, or 10.5 V  
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.  
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  
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.  
1.5-A peak MOSFET gate driver  
Adjustable cycle-by-cycle current limit  
Thermal shutdown  
16-Pin WQFN with wettable flanks  
Device Information(1)  
Create a custom design using the LM5150-Q1  
with the WEBENCH® Power Designer  
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.  
Typical Application Circuit  
Efficiency (VLOAD = 6.8 V, FSW = 440 kHz)  
VSUPPLY  
VLOAD  
100  
95  
90  
85  
LO  
CS AGND  
PGND VOUT  
EN  
VIN  
STATUS  
SYNC  
RT  
80  
LM5150  
COMP  
VSUPPLY=5.5V  
VSET  
VCC  
AVCC  
VSUPPLY=4.5V  
VSUPPLY=3.5V  
VSUPPLY=2.5V  
75  
70  
0
0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7  
Load Current (A)  
3
D008  
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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