Overview
The L5957PDTR is a multifunction voltage regulator produced by STMicroelectronics. This integrated circuit (IC) is designed for automotive applications, particularly in car radio and audio systems. It features a triple voltage regulator and a power switch, along with a sophisticated monitoring circuit for real-time system status detection. The IC is notable for its very low quiescent current in standby mode, making it an efficient choice for power-critical applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Temperature Min | -40.0 | °C |
| Operating Temperature Max | 85.0 | °C |
| Operating Voltage Min | 9.0 | V |
| Operating Voltage Max | 18.0 | V |
| Output Voltages | 8.5 V, 5 V (x2), 3.3 V | V |
| Output Currents | 500 mA (8.5 V), 300 mA (5 V permanent), 800 mA (5 V and 3.3 V) | mA |
| High Side Driver Current | 2 A | A |
| Quiescent Current in Standby | 70 µA (IGNIN = 5 V), 100 µA (VCC = 18 V) | µA |
| Package Name | PowerSO-20 | |
| Packing Type | Tape and Reel | |
| RoHS Compliance | Ecopack2 | |
| Grade | Automotive |
Key Features
- Four output voltages: 8.5 V @ 500 mA, 5 V @ 300 mA (permanent), 5 V @ 800 mA, and 3.3 V @ 800 mA
- 2 A high side driver
- Reset function
- Ignition comparator
- Load dump protection
- Thermal shutdown
- Overcurrent limitation
- All pins ESD protected
- Very low quiescent current in standby mode
- Power surge detection and handling
- High-frequency filtering applied
Applications
The L5957PDTR is primarily designed for automotive applications, particularly in car radio and audio systems. Its features make it suitable for use in various automotive electronic systems where multiple stable voltage outputs are required, and power efficiency is critical.
Q & A
- What is the operating temperature range of the L5957PDTR?
The operating temperature range is from -40°C to 85°C.
- What are the output voltages and currents of the L5957PDTR?
The output voltages are 8.5 V @ 500 mA, 5 V @ 300 mA (permanent), 5 V @ 800 mA, and 3.3 V @ 800 mA.
- What is the quiescent current in standby mode?
The quiescent current in standby mode is 70 µA (IGNIN = 5 V) and 100 µA (VCC = 18 V).
- Does the L5957PDTR have load dump protection?
- Is the L5957PDTR RoHS compliant?
- What is the package type of the L5957PDTR?
- Does the L5957PDTR have thermal shutdown protection?
- Is the L5957PDTR suitable for automotive applications?
- What is the high side driver current of the L5957PDTR?
- Does the L5957PDTR have ESD protection?
