0
ACTIVE
Rating |
Automotive |
Vin (max) (V) |
40 |
Vin (min) (V) |
4 |
Iout (max) (A) |
0.15 |
Output options |
Tracking Output |
Vout (max) (V) |
40 |
Vout (min) (V) |
2 |
PSRR at 100 KHz (dB) |
43 |
Iq (typ) (mA) |
0.06 |
Features |
Reverse Current Protection, Reverse voltage protection, Short-to-battery protection |
Thermal resistance θJA (°C/W) |
45 |
Load capacitance (min) (µF) |
10 |
Regulated outputs (#) |
1 |
Dropout voltage (Vdo) (typ) (mV) |
160 |
Operating temperature range (°C) |
-40 to 125 |
HSOIC (DDA)-8-29.4 mm² 4.9 x 6
For automotive off-board sensors and low-current off-board modules, the power supply is through a long cable from the main board. In such cases, protection is required in the power devices for the off-board loads to prevent the onboard components from damage during a short to GND or short to battery caused by a broken cable. Off-board sensors require a power supply as consistent as that for onboard components to secure high accuracy of data acquisition.
The TPS7B4254-Q1 is designed for automotive applications with a 45V load dump. The device can either be used as one tracking low-dropout (LDO) regulator or as a voltage tracker to build one closed power loop for off-board sensors with an onboard main supply. The output of the device is accurately regulated by a reference voltage at the ADJ pin.
To provide an accurate power supply to the off-board modules, the device offers a 4mV ultra-low tracking tolerance between the ADJ and FB pins across temperature. The back-to-back PMOS topology eliminates the need for an external diode under a reverse-polarity condition. The TPS7B4254-Q1 also includes thermal shutdown, inductive clamp, overload, and short-to-battery protection to prevent damage to onboard components during extreme conditions.
WELL LINK CHIPS GROUP CO.,LIMITED FLAT/RM 1802 BEVERLY HOUSE 93-107 LOCKHART ROAD WANCHAI HK
