|Package | PIN:||VQFN (RHD) | 28|
|Temp:||Q (-40 to 125)|
- Qualified for Automotive Applications
- AEC-Q100 Qualified With the Following Results:
- Device Temperature Grade 1: –40°C to +125°C Ambient OperatingTemperature
- Input Voltage: 2.8 V to 5.5 V
- Two High-Efficiency Step-Down DC-DC Converters:
- Output Voltage: 0.7 V to 3.36V
- Maximum Output Current 2 A
- Programmable Output-Voltage Slew Ratefrom 0.5 mV/µs to 10 mV/µs
- 2-MHz SwitchingFrequency
- Spread-Spectrum Mode and Phase Interleaving for EMIReduction
- Two Linear Regulators:
- Input Voltage: 2.5 V to 5.5 V
- Output Voltage: 0.8 V to 3.3V
- Maximum Output Current 300 mA
- Configurable General-Purpose Output Signals (GPO, GPO2)
- Interrupt Function with Programmable Masking
- Programmable Power-Good Signal (PGOOD)
- Output Short-Circuit and Overload Protection
- Overtemperature Warning and Protection
- Overvoltage Protection (OVP) and Undervoltage Lockout (UVLO)
- 28-pin, 5-mm × 5-mm VQFN Package with Wettable Flanks
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Texas Instruments LP873222RHDRQ1
The LP873222-Q1 is designed to meet the power management requirementsin automotive applications. The device contains two step-down DC-DCconverters and two linear regulators and general-purpose digital-output signals. The device iscontrolled by an I2C-compatible serial interface and by an enablesignal.
The automatic PWM/PFM (AUTO mode) operation gives high efficiency over a wide output-currentrange. The LP873222-Q1 supports remotevoltage sensing to compensate IR drop between the regulator output and the point-of-load (POL) thusimproving the accuracy of the output voltage. In addition the switching clock can be forced to PWMmode and also synchronized to an external clock to minimize the disturbances.
The LP873222-Q1 devicesupportsprogrammable start-up and shutdown delays and sequences including GPO signals synchronized to theenable signal. During start-up and voltage change, the device controls the output slew rate to minimizeoutput voltage overshoot and the in-rush current.