Gehäuseinformationen
| Gehäuse | Pins VQFN (RHB) | 32 |
| Betriebstemperaturbereich (°C) -40 to 125 |
| Gehäusemenge | Träger 3.000 | LARGE T&R |
Merkmale von LP87702-Q1
- AEC-Q100 Qualified for Automotive Applications:
- Device Temperature Grade 1: –40°C to +125°C, TA
-
Functional Safety Quality-Managed
- Documentation Available to Aid Functional Safety System Design
- Two Inputs for External Voltage Monitoring
- Two Programmable Power-Good Signals
- Dedicated Reference Voltage for Diagnostics
- Window Watchdog with Reset Output
- Output Short-Circuit and Overload Protection
- Overtemperature Warning and Protection
- Overvoltage Protection (OVP) and Undervoltage Lockout (UVLO)
- Two High-Efficiency Step-Down DC/DC converters:
- Maximum Output Current 3.5 A
- 2-MHz, 3-MHz, or 4-MHz Switching Frequency
- Auto PWM/PFM and Forced-PWM Operations
- Output Voltage = 0.7 V to 3.36 V
- 5-V Boost Converter
- Maximum Output Current 600 mA
- External Clock Input to Synchronize Switching
- Spread-Spectrum Modulation
- Programmable Start-up and Shutdown Delays and Sequencing with Enable Signal
- Configurable General Purpose Outputs (GPOs)
- I2C-Compatible Interface Supporting Standard (100 kHz), Fast (400 kHz), Fast+ (1 MHz), and High-Speed (3.4 MHz) Modes
- Interrupt Function with Programmable Masking
Beschreibung von LP87702-Q1
The LP87702-Q1helps meet the power management requirements of the latest platforms, particularly in automotive radar and camera and industrial radar applications. The device contains two step-down DC/DC converters, and a 5-V boost converter to support safety critical applications. The device integrates two voltage monitoring inputs for external power supplies and a window watchdog.
The automatic PWM/PFM (AUTO mode) operation gives high efficiency over a wide output current range for buck converters. The LP87702-Q1 uses remote voltage sensing to compensate IR drop between the converter output and the point-of-load, thus improving the accuracy of the output voltage.
Programmable start-up and shutdown sequences synchronized to the enable signal are supported, including general purpose digital outputs.
During start-up and voltage change, the device controls the output slew rate for minimum output voltage overshoot and inrush current. This device contains one-time-programmable (OTP) memory. Each orderable part number has specific OTP settings for a given application. Details of the default OTP configuration for each orderable part number can be found in the technical reference manual.