TPS746 Texas instruments

TPS746

Уточнить цену

TPS746

Уточнить цену

СРАВНИТЬ

В СРАВНЕНИИ

Уточнить цену

Описание

The TPS746 is an adjustable 1-A low-dropout (LDO) regulator with power-good functionality. This device is available in a small, 6-pin, 2-mm × 2-mm WSON package and consumes very low quiescent current and provides fast line and load transient performance. The TPS746 features an ultra-low dropout of 225 mV at 1 A that can help improve the power efficiency of the system. The TPS746 is optimized for a wide variety of applications 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 low output voltage enables this LDO to power the modern microcontrollers with lower core voltages. Additionally, the TPS746 has a low IQ with enable functionality to minimize standby power. This device features an internal soft-start to lower the inrush current, which provides a controlled voltage to the load and minimizes the input voltage drop during start up.The TPS746 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 sources in the system. The TPS746 is stable with small ceramic output capacitors, allowing for a small overall solution size. A precision band-gap and error amplifier provides a high accuracy of 0.7% max at 25ºC and 1% max over temperature (85ºC). This device includes integrated thermal shutdown, current limit, and undervoltage lockout (UVLO) features. The TPS746 has an internal foldback current limit that helps reduce the thermal dissipation during short-circuit events.

Input Voltage Range: 1.5 V to 6.0 V
Adjustable Output Voltage:
- 0.55 V to 5.5 V
Very Low Dropout:
- 225 mV (max) at 1 A (3.3 V_OUT)
High Output Accuracy:
- 0.7%, Typical
- 1%, Maximum Over Temperature (85°C)
Open-Drain Power-Good Output
Power-Good Rising Delay:
- TPS746: 165 µs
- TPS746B: 5 ms
I_Q: 25 µA (Typical)
Built-In Soft-Start With Monotonic V_OUT Rise
Package:
- 2-mm × 2-mm 6-Pin WSON (DRV)
Active Output Discharge

Output options	Adjustable Output
Iout (max) (A)	1
Vin (max) (V)	6
Vin (min) (V)	1.5
Vout (max) (V)	5.5
Vout (min) (V)	0.55
Noise (µVrms)	53
Iq (typ) (mA)	0.025
Thermal resistance θJA (°C/W)	80
Rating	Catalog
Load capacitance (min) (µF)	1
Regulated outputs (#)	1
Features	Enable, Foldback overcurrent protection, Output discharge, Power good, Soft start
Accuracy (%)	1
PSRR at 100 KHz (dB)	45
Dropout voltage (Vdo) (typ) (mV)	190
Operating temperature range (°C)	-40 to 125