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TPS746125PQWDRBRQ1 PDF预览

TPS746125PQWDRBRQ1

更新时间: 2024-11-26 11:06:43
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德州仪器 - TI 稳压器
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44页 4103K
描述
具有电源正常指示功能的汽车类、1A、低 IQ、高 PSRR、低压降 (LDO) 稳压器 | DRB | 8 | -40 to 125

TPS746125PQWDRBRQ1 数据手册

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TPS746-Q1
SBVS358B – JUNE 2018 – REVISED JANUARY 2021  
TPS746-Q1 1-A LDO With Power-Good in Small Wettable Flank WSON Packages  
1 Features  
3 Description  
AEC-Q100 qualified for automotive applications:  
Temperature grade 1: –40°C to +125°C, TA  
Device operating junction temperature range:  
– –40°C to +150°C  
The TPS746-Q1 is a 1-A, ultra-low-dropout regulator  
(LDO) with power-good functionality. This device is  
available in a small 6-pin, 2-mm × 2-mm and a small  
8-pin, 3-mm × 3-mm WSON package with wettable  
flanks to facilitate optical inspection. The TPS746-Q1  
consumes low quiescent current and provides fast line  
and load transient performance.  
Package:  
– 2-mm × 2-mm wettable flank WSON  
– 3-mm × 3-mm wettable flank WSON  
Input voltage range: 1.5 V to 6.0 V  
Output voltage range:  
– Fixed option: 0.65 V to 5.0 V  
– Adjustable option: 0.55 V to 5.5 V  
High PSRR: 38 dB at 100 kHz  
Output accuracy: ±0.85% typical, ±1.5% maximum  
Power-good output options:  
The TPS746-Q1 is a flexible device for post-regulation  
by supporting an input voltage range from 1.5 V to  
6.0 V and an externally adjustable output range of  
0.55 V to 5.5 V. The device also features fixed output  
voltages for powering common voltage rails.  
The TPS746-Q1 has a power-good (PG) output that  
monitors the voltage at the feedback pin to indicate  
the status of the output voltage. The EN input and PG  
output can be used for sequencing multiple power  
supplies in the system.  
– Open-drain or push-pull  
Ultra-low dropout:  
– 265 mV (max) at 1 A (3.3 VOUT  
Stable with a 1-µF or larger capacitor  
Low IQ: 25 µA (typical)  
Active output discharge  
Low thermal resistance:  
)
The TPS746-Q1 is stable with small ceramic output  
capacitors, allowing for a small overall solution size. A  
precision band-gap and error amplifier provides high  
accuracy of ±0.85% (max) at 25°C and ±1.5% (max)  
over temperature. This device includes integrated  
thermal shutdown, current limit, and undervoltage  
lockout (UVLO) features. The TPS746-Q1 has an  
internal foldback current limit that helps reduce the  
thermal dissipation during short-circuit events.  
– DRV (6-pin WSON), RθJA = 80.3°C/W  
– DRB (8-pin WSON), RθJA = 62.0°C/W  
2 Applications  
Device Information (1)  
Automotive head units  
Front and rear cameras  
Automotive cluster displays  
Telematics control units  
Medium, short range radar  
PART NUMBER  
PACKAGE  
BODY SIZE (NOM)  
Wettable flank  
WSON (6)  
2.00 mm × 2.00 mm  
TPS746-Q1  
Wettable flank  
WSON (8)  
3.00 mm × 3.00 mm  
(1) For all available packages, see the orderable addendum at  
the end of the data sheet.  
VIN  
VOUT  
VIN  
VOUT  
IN  
OUT  
FB  
IN  
OUT  
Cff  
TPS746-Q1  
RPG*  
TPS746-Q1  
CIN  
COUT  
CIN  
R1  
R2  
COUT  
EN  
RPG  
*
EN  
PG  
GND  
PG  
GND  
*Pull-up resistor not required  
for push-pull option  
*Pull-up resistor not required  
for push-pull option  
Typical Application: Fixed Voltage Version  
Typical Application: Adjustable Voltage Version  
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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