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LP8728B-Q1

現行

適用於汽車應用的 LP8728B-Q1 四輸出降壓 DC/DC 轉換器

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產品規格表

LP8728B-Q1

現行
產品規格表 立即訂購

產品詳細資料

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 Rating Automotive Operating temperature range (°C) -40 to 125 Iq (typ) (mA) 0.001 Switching frequency (typ) (kHz) 3200 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 Rating Automotive Operating temperature range (°C) -40 to 125 Iq (typ) (mA) 0.001 Switching frequency (typ) (kHz) 3200 Product type Processor and FPGA
WQFN (RSG) 28 25 mm² 5 x 5
  • LP8728B-Q1 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 = 1.5 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)
  • LP8728B-Q1 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 = 1.5 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 LP8728B-Q1 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 LP8728B-Q1 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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類型 標題 日期
* Data sheet LP8728B-Q1 Quad-Output Step-Down DC-DC Converter datasheet PDF | HTML 2015年 1月 26日
EVM User's guide Using the LP8728EVM Evaluation Module 2013年 8月 19日

設計與開發

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開發板

LP8728EVM — 四路輸出降壓 DC/DC 轉換器 PMIC 評估模組

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.
使用指南: PDF
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WQFN (RSG) 28 Ultra Librarian
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