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reference designMP24830

Monolithic Power Systems MP24830

4.5V – 90V, Programmable Frequency White LED Driver

Overview

TopologyBuck Converter
Input voltage8-24 V
Switching frequency30-465 kHz
Output 11 A
IC revision1.02

Description

The MP24830 is a 90V white LED driver suitable for either step-down or inverting step-up/down applications. It supports a wide input range with excellent load and line regulation. Its programmable current limit provides customized applications with a wide power range. Current mode operation provides a fast transient response and eases loop stabilization. Fault condition protection includes thermal shutdown, cycle-by-cycle peak-current limiting, open-string protection, and output short-circuit protection.The MP24830 incorporates both DC and PWM dimming onto a single control pin. The separate input reference ground pin allows for direct enable and/or dimming control for a positive-tonegative power conversion.The MP24830 requires a minimal number of readily-available external components. It is available in 14-pin SOIC and QFN packages.

Features

  • Programmable Maximum Output Current
  • Unique Step-Up/Down Operation (Buck-Boost Mode)
  • Wide 4.5V-to-90V Operating Input Range for Step-Down Applications (Buck Mode)
  • Adjustable Switching Frequency
  • Analog and PWM Dimming
  • 0.2V Reference Voltage
  • 10μA Shutdown Mode
  • No Minimum LED Quantity Required
  • Stable with Low ESR Output Ceramic Capacitors
  • Cycle-by-Cycle Over-Current Protection
  • Thermal Shutdown Protection
  • Open-String Protection
  • Output Short-Circuit Protection
  • Available in 14-Pin SOIC and QFN Packages

Typical applications

  • Automotive LED Lighting
  • LCD Backlight
  • General LED Illumination

More information

Products

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Data­sheet
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Status
Product series
L(µH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC(mΩ)
fres(MHz)
Material
Qty.
SamplesAvailability & Sample
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74435572200
SPECWE-HCI SMT Flat Wire High Current Inductor, 22 µH, 10.9 A
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Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCI SMT Flat Wire High Current Inductor
Inductance22 µH
Performance Rated Current10.9 A
Saturation Current @ 10%9 A
Saturation Current @ 30%11 A
DC Resistance14.6 mΩ
Self Resonant Frequency10.5 MHz
MaterialMnZn 
Packaging Unit150 
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