TPS7B4260-Q1中文资料德州仪器数据手册PDF规格书

1 Features

• AEC-Q100 qualified for automotive applications:

– Temperature grade 1: –40°C to +125°C, TA

– Junction temperature: –40°C to +150°C, TJ

• Wide input voltage range:

– Absolute maximum range: –40V to +45V

– Operating range: 3.3V to 40V

• Output voltage:

– Wide operating range: 2V to 40V

– Output voltage flexibility: VOUT can be scaled

to values that are higher or lower than the

reference using external resistors in a voltage

divider configuration

• Maximum output current: 300mA

• Very tight output-tracking tolerance: 6mV (max)

• Low dropout voltage: 330mV at 200mA

• Combined enable and reference functionalities

• Low quiescent current at light load: 55μA

• Stable over a wide range of ceramic output

capacitor values:

– COUT range: 1μF to 100μF

– ESR range: 1mΩ to 2Ω

• Integrated protection features:

– Reverse current protection

– Reverse polarity protection

– Overtemperature protection

– Protection against output short circuit to ground

and supply

• Available in the HSOIC (DDA) low thermal

resistance (RθJA = 48°C/W) 8-pin package

2 Applications

• Powertrain pressure sensors

• Powertrain temperature sensors

• Powertrain exhaust sensors

• Powertrain fluid concentration sensors

• Body control modules (BCM)

• Zone control modules

• HVAC control modules

3 Description

The TPS7B4260-Q1 is a monolithic, integrated, lowdropout

(LDO) voltage tracker. The device is available

in an 8-pin HSOIC package. The TPS7B4260-Q1

is designed to provide power supply to off-board

sensors in an automotive environment. The high

300mA current rating of the device potentially allows

a single device to power multiple off-board sensors

simulataneously. Because the risk of failure in cables

that deliver off-board power is high, the device

comes with integrated protection features against fault

conditions such as short to battery, reverse polarity,

output short to ground, and overtemperature. The

device incorporates a topology containing two backto-

back P-channel metal-oxide semiconductor fieldeffect

transistors (MOSFETs). This PMOS topology

eliminates the need for an external diode that

is otherwise required to help protect against fault

conditions that result in flow of reverse current.

The device is designed to handle a 45V (absolute

maximum) input voltage and survive the automotive

load dump transient conditions.