LP8728C-Q1

ACTIVE

LP8728C-Q1 Quad Output Step-Down DC/DC Converter for Automotive Applications

Product details

Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (min) (V) 1.2 Vout (max) (V) 3.3 Iout (max) (A) 1 Features Synchronous rectification, Thermal shutdown, UVLO fixed Iq (typ) (mA) 0.001 Rating Automotive Switching frequency (max) (kHz) 3200 Operating temperature range (°C) -40 to 125 Product type Processor and FPGA
Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (min) (V) 1.2 Vout (max) (V) 3.3 Iout (max) (A) 1 Features Synchronous rectification, Thermal shutdown, UVLO fixed Iq (typ) (mA) 0.001 Rating Automotive Switching frequency (max) (kHz) 3200 Operating temperature range (°C) -40 to 125 Product type Processor and FPGA
WQFN (RSG) 28 25 mm² 5 x 5
  • LP8728-Q1-C is an Automotive Grade Product that
    is AECQ-100 Grade 1 Qualified
  • Four High Efficiency Step-Down DC-DC
    Converters:
    • 93% Peak Efficiency (VIN = 5 V, VOUT = 3.3 V)
    • Max Output Current 1 A
    • Forced PWM Operation
    • Soft-Start Control
    • VOUT1 = 3.3 V
    • VOUT2 = 1.2 V
    • VOUT3 = 1.8 V or 2.65 V (pin selectable)
    • VOUT4 = 1.8 V
  • Separate Enable Inputs for each Converter Control
  • Separate Power Good Outputs for each Converter
  • Output Overcurrent and Input Overvoltage Protection
  • Overtemperature Protection
  • Undervoltage Lockout (UVLO)
  • LP8728-Q1-C is an Automotive Grade Product that
    is AECQ-100 Grade 1 Qualified
  • Four High Efficiency Step-Down DC-DC
    Converters:
    • 93% Peak Efficiency (VIN = 5 V, VOUT = 3.3 V)
    • Max Output Current 1 A
    • Forced PWM Operation
    • Soft-Start Control
    • VOUT1 = 3.3 V
    • VOUT2 = 1.2 V
    • VOUT3 = 1.8 V or 2.65 V (pin selectable)
    • VOUT4 = 1.8 V
  • Separate Enable Inputs for each Converter Control
  • Separate Power Good Outputs for each Converter
  • Output Overcurrent and Input Overvoltage Protection
  • Overtemperature Protection
  • Undervoltage Lockout (UVLO)

The LP8728-Q1-C is a quad-output Power Management Unit (PMU), optimized for low-power FPGAs, microprocessors, and DSPs for automotive applications. This device integrates four highly efficient step-down DC-DC converters into one package. Each converter has high current capability and separate controls which allows flexibility to use the device in multiple applications. All the converters operate above the AM band with a fixed 3.2-MHz switching frequency. The high-side switch turn on time of each converter is phase shifted to minimize input current spikes.

Protection features include output short-circuit protection, switch current limits, input overvoltage protection, input undervoltage lockout, and thermal shutdown functions. During start-up, the device controls the output slew rate to minimize output voltage overshoot and the input inrush current.

The LP8728-Q1-C is a quad-output Power Management Unit (PMU), optimized for low-power FPGAs, microprocessors, and DSPs for automotive applications. This device integrates four highly efficient step-down DC-DC converters into one package. Each converter has high current capability and separate controls which allows flexibility to use the device in multiple applications. All the converters operate above the AM band with a fixed 3.2-MHz switching frequency. The high-side switch turn on time of each converter is phase shifted to minimize input current spikes.

Protection features include output short-circuit protection, switch current limits, input overvoltage protection, input undervoltage lockout, and thermal shutdown functions. During start-up, the device controls the output slew rate to minimize output voltage overshoot and the input inrush current.

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Technical documentation

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* Data sheet LP8728C-Q1 Quad-Output Step-Down DC-DC Converter datasheet PDF | HTML 26 Jan 2015
EVM User's guide Using the LP8728EVM Evaluation Module 19 Aug 2013

Design & development

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Evaluation board

LP8728EVM — Quad Output Step-Down DC/DC Converter PMIC Evaluation Module

The LP8728EVM evaluation module (EVM) helps designers evaluate the operation and performance of LP8728 quad output step down DC/DC converter. The LP8728EVM uses the LP8728’s four step down DC/DC converters to provide 3.3V, 2.65V, 1.8V and 1.25V output voltages from single input voltage.
User guide: PDF
Not available on TI.com
Package Pins Download
WQFN (RSG) 28 View options

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