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LM61495

更新时间： 2024-11-25 02:48:43
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德州仪器 - TI /
页数 文件大小 规格书
64页 4721K
描述
LM62460-Q1, LM61480-Q1, and LM61495-Q1 Pin-Compatible 6-A/8-A/10-A Automotive Buck Converter Optimized for Power Density and Low EMI

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LM61495 数据手册

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LM61495-Q1, LM61480-Q1, LM62460-Q1  
SNVSBA0D – FEBRUARY 2020 – REVISED AUGUST 2021  
LM62460-Q1, LM61480-Q1, and LM61495-Q1 Pin-Compatible 6-A/8-A/10-A Automotive  
Buck Converter Optimized for Power Density and Low EMI  
1 Features  
3 Description  
•
AEC-Q100 qualified for automotive applications:  
– Temperature grade 1: –40°C to +125°C, TA  
Functional Safety-Capable  
– Documentation available to aid functional safety  
system design  
Input voltage range from 3 V to 36 V  
RESET output with filter and delayed release  
Designed for low EMI:  
– CISPR 25 class 5 compliant EVM  
– Pin-configurable spread spectrum  
– Adjustable SW node rise time  
The LM6x4xx-Q1 buck regulator family are  
automotive-focused regulators providing either fixed  
or an adjustable output voltage which can be set  
from 1 V to 95% of expected input voltage. These  
regulators operate under a wide input voltage range of  
3 to 36V and has transient tolerance up to 42 V.  
•
•
•
•
The family is designed for low EMI. The device  
incorporates pin selectable spread spectrum, and an  
adjustable SW node rise time. Dual Random Spread  
Spectrum (DRSS) frequency hopping is set to ±4%  
(typical), drastically reducing peak emissions through  
a combination of triangular and pseudorandom  
modulation, and includes advanced techniques to  
reduce output voltage ripple caused by spread  
spectrum modulation.  
– Above and below AM band operation: pin  
configurable 400 kHz and 2.2 MHz fixed or  
adjustable from 200 kHz – 2.2 MHz  
– Low EMI symmetrical pinout  
– Light load mode is pin-configurable for constant  
frequency or pulse frequency modulation (PFM)  
High-efficiency solution  
An open-drain RESET output, with filtering and  
delayed release, gives a true indication of system  
status. In auto mode the device automatically  
transitions between Fixed frequency Pulse Width  
Modulation (FPWM) and Pulse Frequency Modulation  
(PFM) modes of operation, allowing an unloaded  
•
•
– 95% efficient for an 8-A load  
– 5-µA input current while unloaded in auto mode  
– <1-µA shutdown current (typical)  
High power density  
– Built-in compensation, soft start, current limit,  
thermal shutdown, and UVLO  
– 4.5-mm × 3.5-mm wettable flank QFN package  
– ϴJA = 21.6°C/W, measured on  
LM61495RPHEVM  
current consumption of only  
5
µA (typical).  
Electrical characteristics are specified over a junction  
temperature range of –40°C to +150°C.  
Device Information  
PART NUMBER  
LM61495-Q1  
PACKAGE(1)  
BODY SIZE (NOM)  
2 Applications  
LM61480-Q1  
VQFN (16)  
4.50 mm × 3.50 mm  
•
•
•
Automotive infotainment  
Instrument cluster  
ADAS  
LM62460-Q1  
(1) For all available packages, see the orderable addendum at  
the end of the data sheet.  
3.0 V to 36 V input  
VIN1  
EN  
VIN2  
PGND2  
PGND1  
BIAS  
SW  
RESET  
SPSP  
CBOOT  
RBOOT  
FB  
MODE/SYNC  
VCC  
RT  
AGND  
EVM Efficiency: VOUT = 5 V, FSW = 2.2 MHz  
Simplified Schematic  
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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