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  4. Automotive-grade, up to 45mA/string, combined analog and PWM dimming white LED driver MPQ3387L-AEC1 (Monolithic Power Systems, Inc.)
Automotive-grade, up to 45mA/string, combined analog and PWM dimming white LED driver MPQ3387L-AEC1-MPQ3387L-AEC1
Automotive-grade, up to 45mA/string, combined analog and PWM dimming white LED driver MPQ3387L-AEC1-Monolithic Power Systems, Inc.

Automotive-grade, up to 45mA/string, combined analog and PWM dimming white LED driver MPQ3387L-AEC1
Monolithic Power Systems, Inc.

About This Product

■Summary

MPQ3387L is a step-up converter with 6 channels of current sources. Designed to drive white LED arrays as backlights for medium or small LCD panels. MPQ3387L uses peak current mode as its PWM control architecture. The switching frequency can be set by a resistor. Generates up to 45V output voltage from a 3V to 25V input supply. The MPQ3387L independently adjusts the current of each LED string to a value set by an external current setting resistor. The MPQ3387L utilizes six internal current sources on each LED string terminal to achieve current balance between strings with 3% current regulation accuracy. The low 500mV regulation voltage of the LED current source reduces power losses. The MPQ3387L features external digital PWM dimming and analog dimming, both of which share a single input with a 25% PWM duty cycle as a transition point. A mixed dimming strategy helps improve the dimming rate. The MPQ3387L also automatically shifts the frequency of a PWM input signal from 100Hz to 20kHz to 24kHz to 27.5kHz to eliminate audible noise. MPQ3387L has rich protection modes to ensure safe operation. Protection modes include recoverable OCP (overcurrent protection), OVP (overvoltage protection), OTP (overtemperature protection), and LED short circuit and open protection. The MPQ3387L is offered in a TQFN24-4mm x 4mm package.

■Features and benefits

・Guaranteed temperature range limits for the automotive industry ・6 strings, maximum 45mA/string ・Input voltage range from 3V to 25V ・3% current matching accuracy between strings ・Programmable switching frequency - Selectable analog and PWM combination dimming mode or pure PWM dimming mode - Combination of analog and PWM dimming modes with 25% dimming transition point ・24kHz to 27.5kHz output dimming frequency to eliminate audible noise ・Cascade function with single power supply ・Programmable overvoltage protection ・Recoverable thermal shutdown protection ・Cycle-by-cycle overcurrent protection ・Fault indicator signal output (optional) ・Low voltage malfunction prevention function

  • Product

    Automotive-grade, up to 45mA/string, combined analog and PWM dimming white LED driver MPQ3387L-AEC1

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1 Models of Automotive-grade, up to 45mA/string, combined analog and PWM dimming white LED driver MPQ3387L-AEC1

Image Part Number Price (excluding tax) Channels Dimming (Output) Ichannel (max) (A) Isw Limit (A) LEDx ABS Voltage (V) Other Features Power MOSFET Topology Typical LCD Screen Sizes Vout (max) (V) Fsw (max) (kHz) Fsw (min) (kHz) Grade Package (mm) Input voltage (max) (V) Input voltage (min) (V)
Automotive-grade, up to 45mA/string, combined analog and PWM dimming white LED driver MPQ3387L-AEC1-Part Number-MPQ3387L-AEC1

MPQ3387L-AEC1

Available upon quote

6

Smart-Dim

0.045

2.5

50

Output/Input Disconnect

Integrated

Boost

Medium (10" to 29")

50

1,250

500

Automotive

TQFN-24 (4x4)

Twenty five

3

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About Company Handling This Product

Monolithic Power Systems, Inc.

Company Overview

Monolithic Power Systems (MPS), founded in 1997 and headquartered in San Jose, California, is a manufacturer o...

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