MP5414

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PMU for 3D Glasses



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Product Description

The MP5414 is a highly-efficient fully-integrated PMU with a current-mode step-up converter, four single-pole/double-throw switches, low drop-out, and a battery charger designed for battery-powered supply applications.? The step-up converter can start-up from an input voltage as low as 1.8V. It uses a current-limited variable-frequency control algorithm to optimize efficiency and minimize external component size and cost. The internal low-resistance N-Channel MOSFET switch can withstand up to 10V, allowing the MP5414 to produce a high output voltage with high efficiency from a dual-cell NiCd/NiMH or single-cell Li-ion battery. In addition, the step-up converter can disconnect all loads from the input DC power supply.?The charger features constant-current and constant-voltage charging modes with a programmable charge current (50mA to 300mA), trickle-charge capability, and a charge-status indicator. Charging is enabled with an input voltage greater than 3.5V, and is disabled when unplugged from the AC adaptor. The charger does not need an external reverse-blocking diode.?The low-dropout linear regulator operates with low noise from a 2.7V-to-6.5V input voltage, and regulates the output voltage with 2% accuracy from 1.25V to 5V. The MP5414 is available in a 4mm x 5mm 28-pin QFN package.

Product Features

  • 1.8V Low Voltage Start-Up
  • 1.8V to 5.5V Input Range
  • Output Disconnect
  • Integrated Power MOSFET and Schottky Diode
  • Variable Frequency Control
  • Current Mode Control with Internal Compensation
  • Inrush Current Limiting and Internal Soft-Start
  • Input Under-Voltage Lockout
  • 0.75% VBATT Accuracy
  • Low Reverse-Battery Current (< 1µA)
  • Programmable Charge Current
  • Charge Status Indication
  • No External Sense Resistor
  • No External Reverse Blocking Diode
  • Low 100mV Dropout at 100mA Output
  • Programmable Output Voltage with 2% Accuracy
  • Up to 6.5V Input Voltage
  • High PSRR: 70dB at 1kHz
  • Better Than 0.001%/mA Load Regulation
  • Stable With Low-ESR Output Capacitor

Parametrics

  • Vfb (V)1.23
  • Vin (min) (V)1.8
  • Vin (max) (V)5.5
  • Iq (typ) (mA)0.028
  • Regulated Outputs7
  • Step-Down DC/DC Controller0
  • Step-Down DC/DC Converter0
  • Step-Up DC/DC Controller0
  • Step-Up DC/DC Converter1
  • Internal LDO1
  • GradeCatalog
  • PackageQFN-28 (4x5)
  • Step-Up Converter Current (A)0.1 to 0.8
  • LDO Current (A)0.25
  • Internal LDO
  • Special FeaturesInrush Current Limiting, Output Disconnect, Variable Frequency Control
  • SSInternal
  • PGNo