MP1531

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Low Power Triple Outputs Boost Plus Charge Pumps for TFT Bias

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Product Description

The MP1531 is a triple output step-up converter with charge-pumps to make a complete DC/DC converter to power a TFT LCD panel from a 2.7V to 5.5V supply. The MP1531 includes a 250kHz fixed frequency step-up converter and a positive and negative linear regulator. The linear regulators are powered via charge-pumps driven by the step-up converter switch node. A single on/off control enables all 3 outputs. The outputs are internally sequenced at power­on for ease of use. An internal soft-start prevents overloading the input source at startup. Cycle-by-cycle current limit reduces component stress. The MP1531 is available in both a tiny 16-pin QFN package (3mm x 3mm) and a 16-pin TSSOP package.

Product Features

  • Negative 10mA Linear Regulator
  • 250mO Internal Power MOSFET Switch
  • 95% Efficiency
  • 1µA Shutdown Mode
  • Fixed 250kHz Frequency
  • Positive Regulator up to 38V
  • Negative Regulator down to -20V
  • Internal Power-On Sequencing
  • Adjustable Soft-Start/Fault Timer
  • Thermal Shutdown
  • Cycle-By-Cycle Over Current Protection
  • Under Voltage Lockout
  • Ready Flag
  • 16-Pin TSSOP and QFN (3mm x 3mm) Packages

Parametrics

  • Vout (min) (V)2.7
  • Vin (min) (V)2.7
  • Vin (max) (V)5.5
  • Isw Limit (typ) (A)0.65
  • Iq (typ) (mA)1.2
  • Regulated Outputs3
  • fsw (max) (kHz)250
  • Vout (max) (V)22
  • Vfb (V)1.25
  • Mps StatusActive
  • mps_Status1
  • GradeCatalog
  • PackageQFN-16 (3x3), TSSOP16
  • Special FeaturesIntegrated Linear Regulators
  • SSExternal
  • Down ModeNo
  • PGNo
  • Input/Output DisconnectNo
  • Enable All Buying Option Link
  • Disable Add To Cart Button
  • Enable Evaluation Kit Button
  • Disable In Stock Block

Evaluation Kit

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Kit details

The EVQ1531-M-00A Evaluation Board is designed to demonstrate the capabilities of MPS’ MP1531 triple output step-up converter with charge-pumps.

The MP1531 includes a 250KHz fixed-frequency step-up converter and a positive and negative linear regulator. The linear regulators are powered via charge-pumps driven by the step-up converter switch node.

A single on/off control enables all 3 outputs. The outputs are internally sequenced at power-on for ease of use. An internal soft-start prevents overloading the input source at startup. Cycle-by-cycle current limit reduces component stress.

US$ 25.00 + tax