description of products:
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 WSON package and a small 8-pin, 3-mm × 3-mm VSON package with wettable flanks to facilitate optical inspection. The TPS746-Q1 consumes low quiescent current and provides fast line and load transient performance.
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.
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.
product feature:
- 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
- Package:
- 2-mm × 2-mm wettable flank WSON
- 3-mm × 3-mm wettable flank VSON
- 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:
- 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
- Functional Safety-Capable
- Low thermal resistance:
- DRV (6-pin WSON), RθJA = 80.3°C/W
- DRB (8-pin VSON), RθJA = 55.5°C/W
输出optionsAdjustable输出,Fixed输出
输出电流(Max)(A)1
Vin(Max)(V)6
Vin(Min)(V)1.5
输出电压(Max)(V)5.5
输出电压(Min)(V)0.55
固定输出选项(V)1,1.1,1.15,1.2,1.25,1.3,1.35,1.5,1.7,1.8,2.5,2.8,2.9,3,3.3,3.4,5
噪音(µVrms)53
Iq(规格)(毫安)0.025
ThermalresistanceθJA(°C/W)55
功能安全分类功能alSafety-Capable
等级汽车领域
负载电容(Min)(µF)1
调节输出(#)1
特性Enable,Foldbackovercurrentprotection,Powergood,Wettableflankspackage
精确(%)0.85
电源抑制比在100kHz的指标(dB)45
跌落电压(Vdo)(规格)(mV)190
温度范围(C)-40to125
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