TPS7B4255 Series

70-mA 40-V voltage-tracking low-dropout (LDO) regulator with 5-mV tracking tolerance

Catalog

70-mA 40-V voltage-tracking low-dropout (LDO) regulator with 5-mV tracking tolerance

Part	Current - Output	Output Type	Current - Quiescent (Iq)	Current - Supply (Max) [Max]	Voltage Dropout (Max) [Max]	Package / Case	Voltage - Output (Min/Fixed)	Voltage - Output (Min/Fixed)	PSRR	Voltage - Output (Max) [Max]	Control Features	Number of Regulators	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Output Configuration	Protection Features	Supplier Device Package
Texas Instruments TPS7B4255DBVR	70 mA	Adjustable	50 çA	550 µA	0.47 V	SC-74A SOT-753	2 V	Tracking	80 dB	2 V	Current Limit Enable	1	Surface Mount	125 °C	-40 °C	Positive	Over Current Over Temperature Reverse Current Reverse Polarity Short Circuit	SOT-23-5

Catalog

70-mA 40-V voltage-tracking low-dropout (LDO) regulator with 5-mV tracking tolerance

Key Features

• Wide input operating voltage range (3 V to 40 V):Absolute maximum input range: –40 V to +45 VWide output voltage range: 2 V to 30 VVery-tight, output-tracking tolerance: 5 mV (max)Low dropout voltage: 500 mV (max) at 70 mAReverse polarity protectionReverse current protectionCombined reference and enable inputLow quiescent current at light loads (100-µA load):50 µA (max)Wide ESR range:Stable with 1-µF to 200-µF ceramic output capacitor, 1-mΩ to 3-Ω ESROvertemperature protectionOutput short-circuit protection to ground and supplyJunction temperature: –40°C to +150°C, TJAvailable in 5-pin SOT-23 DBV packageBuffers signals up to 1 kHz (see theSignal-Buffering LDOsection)Wide input operating voltage range (3 V to 40 V):Absolute maximum input range: –40 V to +45 VWide output voltage range: 2 V to 30 VVery-tight, output-tracking tolerance: 5 mV (max)Low dropout voltage: 500 mV (max) at 70 mAReverse polarity protectionReverse current protectionCombined reference and enable inputLow quiescent current at light loads (100-µA load):50 µA (max)Wide ESR range:Stable with 1-µF to 200-µF ceramic output capacitor, 1-mΩ to 3-Ω ESROvertemperature protectionOutput short-circuit protection to ground and supplyJunction temperature: –40°C to +150°C, TJAvailable in 5-pin SOT-23 DBV packageBuffers signals up to 1 kHz (see theSignal-Buffering LDOsection)

Description

The TPS7B4255 is a low-dropout (LDO) voltage-tracking regulator, with high tracking accuracy and excellent load and line transient response. The device is available in a 5-pin, SOT-23 (DBV) package. The TPS7B4255 is designed to supply off-board sensors in industrial applications such as condition monitoring sensor systems. The device provides integrated protection features such as reverse polarity, output short to supply and ground, current limit, and thermal shutdown to protect against the high risk of cable failures in an off-board power system. The device is designed to survive a 45-V (absolute maximum) input voltage during extreme transient events. A reference voltage applied at the ADJ/EN pin is effectively tracked with high accuracy for loads up to 70 mA. The high tracking accuracy provides accurate power supply to off-board modules and enables better accuracy when making measurements using ratiometric sensors. By setting the ADJ/EN input pin low, the TPS7B4255 switches to standby mode and reduces the quiescent current to the minimum value. The TPS7B4255 is a low-dropout (LDO) voltage-tracking regulator, with high tracking accuracy and excellent load and line transient response. The device is available in a 5-pin, SOT-23 (DBV) package. The TPS7B4255 is designed to supply off-board sensors in industrial applications such as condition monitoring sensor systems. The device provides integrated protection features such as reverse polarity, output short to supply and ground, current limit, and thermal shutdown to protect against the high risk of cable failures in an off-board power system. The device is designed to survive a 45-V (absolute maximum) input voltage during extreme transient events. A reference voltage applied at the ADJ/EN pin is effectively tracked with high accuracy for loads up to 70 mA. The high tracking accuracy provides accurate power supply to off-board modules and enables better accuracy when making measurements using ratiometric sensors. By setting the ADJ/EN input pin low, the TPS7B4255 switches to standby mode and reduces the quiescent current to the minimum value.