封裝資訊
| 封裝 | 引腳 HSOIC (DDA) | 8 |
| 作業溫度範圍 (°C) -40 to 125 |
| 包裝數量 | 運送包裝 2,500 | LARGE T&R |
TPS7B4253-Q1 的特色
- Qualified for Automotive Applications
- AEC-Q100 Qualified With the Following Results:
- Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
- Device HBM ESD Classification Level 3A
- Device CDM ESD Classification Level C6
- –40 to 45-V Wide Input-Voltage Range (Maximum)
- Output Voltage Adjusts Down to:
- 1.5 to 40 V (HTSSOP)
- 2 to 40 V (SO PowerPAD™)
- 300-mA Output Current Capability
- Very-Low Output Tracking Tolerance, ±4 mV
- 320-mV Low Dropout Voltage when IOUT = 200 mA
- Separate Pins for Enable and Tracking Inputs (HTSSOP only)
- Low Quiescent Current (IQ):
- < 4 µA when EN = LOW
- 60 µA (Typical) at Light Loads
- Extremely Wide ESR Range.
- Stable With 10- to 500-µF Ceramic Output Capacitor, ESR 1 mΩ to 20 Ω
- Reverse Polarity Protection
- Current-Limit and Thermal-Shutdown Protection
- Output Short-Circuit Proof to Ground and Supply
- Inductive Clamp at OUT Pin
- Available in the Following Packages:
- 8-Pin SO PowerPAD Package
- 20-Pin HTSSOP Package
TPS7B4253-Q1 的說明
For automotive off-board sensors and small 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 consistent power supply as onboard components to secure high accuracy of data acquisition.
The TPS7B4253-Q1 device is designed for automotive applications with a 45-V load dump. The device can either be used as one tracking low-dropout (LDO) regulator or 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 4-mV ultralow tracking tolerance between the ADJ and FB pins across temperature. The back-to-back PMOS topology eliminates the need for an external diode under reverse polarity condition. The TPS7B4253-Q1 device also includes thermal shutdown, inductive clamp, overload, and short-to-battery protection to prevent damage to onboard components during extreme conditions.