Datasheet > LM51501-Q1_V01

LM51501-Q1_V01

更新时间： 2024-11-24 02:51:39

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德州仪器 - TI		/
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LM51501-Q1 Wide VIN Automotive Low IQ Boost Controller

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LM51501-Q1

SNVSAZ0B –MARCH 2018–REVISED JUNE 2020

LM51501-Q1 Wide VIN Automotive Low I_QBoost Controller

1 Features

2 Applications

•

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 LM51501-Q1 is a wide input range automatic

boost controller. The device can be used to maintain

a stable output voltage during automotive cranking

from a vehicle battery or from a back-up battery.

•

Functional Safety-Capable

–

Documentation available to aid functional

safety system design

Wide VIN input range from 1.5 V to 42 V when

VOUT ≥ 5 V (65-V absolute maximum)

The LM51501-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.

•

Low shutdown current (I_Q≤ 5 µA)

Low standby current (I_Q≤ 15 µA)

Four programmable output voltage options and

two selectable configurations

The LM51501-Q1 operates in low I_Qstandby 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.

–

6.0 V, 6.5 V, 9.5 V, or 11.5 V

Start-stop or e-Call configurations

•

Adjustable switching frequency from 220 kHz to

2.3 MHz

The device transitions in and out of the low I_Q

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. Status indicator can be used to

control a circuit to bypass the diode when the part is

not boosting in order to reduce power dissipation. In

E-call mode, it can be used to control a disconnect

switch to protect the back-up-battery.

•

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 LM51501-Q1

with the WEBENCH^®Power Designer

Device Information⁽¹⁾

PART NUMBER

PACKAGE

BODY SIZE (NOM)

LM51501-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 (V_LOAD= 9.5 V, F_SW= 440 kHz)

100

V_SUPPLY

V_LOAD

CS AGND

PGND VOUT

VIN

STATUS

SYNC

V_SUPPLY=7.5V

V_SUPPLY=6.5V

LM51501

COMP

V_SUPPLY=5.5V

V_SUPPLY=4.5V

V_SUPPLY=3.5V

VSET

VCC

AVCC

0.3

0.6

0.9

1.2

1.5

Load Current (A)

1.8

2.1

2.4

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.

12 3 4 5 6 7...43

中文翻译

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与LM51501-Q1_V01相关器件

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LM51501QRUMRQ1	TI	获取价格	具有 6V、6.5V、9.5V、11.5V 输出选项的汽车类 1.5V 至 42V 输入电
LM51501QRUMTQ1	TI	获取价格	具有 6V、6.5V、9.5V、11.5V 输出选项的汽车类 1.5V 至 42V 输入电
LM51501QURUMRQ1	TI	获取价格	LM51501-Q1 Wide VIN Automotive Low IQ Boost Controller
LM51501QWRUMRQ1	TI	获取价格	具有 6V、6.5V、9.5V、11.5V 输出选项的汽车类 1.5V 至 42V 输入电
LM51501QWRUMTQ1	TI	获取价格	具有 6V、6.5V、9.5V、11.5V 输出选项的汽车类 1.5V 至 42V 输入电
LM5150-Q1	TI	获取价格	具有 6.8V、7.5V、8.5V、10.5V 输出选项的汽车类 1.5V 至 42V 输
LM5150-Q1_V01	TI	获取价格	LM5150-Q1 Wide VIN Automotive Low IQ Boost Controller
LM5150QRUMRQ1	TI	获取价格	具有 6.8V、7.5V、8.5V、10.5V 输出选项的汽车类 1.5V 至 42V 输
LM5150QRUMTQ1	TI	获取价格	具有 6.8V、7.5V、8.5V、10.5V 输出选项的汽车类 1.5V 至 42V 输
LM5150QURUMRQ1	TI	获取价格	LM5150-Q1 Wide VIN Automotive Low IQ Boost Controller

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