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ReferenzdesignMPQ3359-AEC1 | Demoboard EVQ3359-LE-00A

Monolithic Power Systems MPQ3359-AEC1 | Demoboard EVQ3359-LE-00A

4-Channel, Max 150mA/Channel, Boost WLED Driver with High Dimming Ratio Evaluation Board, AEC-Q100 Qualified

Details

TopologieAufwärtswandler
Eingangsspannung12 V
IC-Revision1.0

Beschreibung

The EVQ3359-LE-00A is an evaluation board designed to demonstrate the capabilities of the MPQ3359-AEC1, a 4-channel step-up converter that drives white LED (WLED) arrays as backlighting for small- or medium-sized LCD panels.Peak current mode is used as the pulse-width modulation (PWM) control architecture to regulate the boost converter. Four channel current sources are applied to the LED cathode to adjust LED brightness. This regulates the current in each LED string to the value set by an external current-setting resistor, with a 2.5% current regulation accuracy between strings.The MPQ3359-AEC1’s low on resistance (RDS(ON)) MOSFET and headroom voltage improve efficiency. The switching frequency (fSW) can be configured via a resistor or an external clock.The MPQ3359-AEC1 provides analog and PWM dimming via the EN/ADIM and PDIM pins. The device also has a fixed delay time between LED current channels to eliminate noise during PWM dimming.Protection features include over-current protection (OCP), over-voltage protection (OVP), over-temperature protection (OTP), LED short protection, and LED open protection.The EVQ3359-LE-00A is a fully assembled evaluation board. The MPQ3359-AEC1 is available in a QFN-20 (3mmx4mm) package, and it is AEC-Q100 Grade 1 qualified.

Eigenschaften

  • 3.5V to 40V Input Voltage (VIN) Range
  • Four Channels with a Maximum of 150mA per Channel
  • Internal 100mΩ, 50V MOSFET
  • Configurable Switching Frequency (fSW) Up to 2.2MHz
  • External Sync SW Function
  • Pulse-Width Modulation (PWM) Dimming
  • Analog Dimming
  • Deep Dimming Ratio
  • Excellent EMI Performance and Frequency Spread Spectrum (FSS)
  • Fixed 100μs Delay Time between LED Current Channels during PWM Dimming (Replace Phase Shift)
  • 2.5% Current Matching
  • Cycle-by-Cycle Current Limiting
  • Disconnect VOUT from VIN
  • LED Short/Open Protection, Over-Temperature Protection (OTP), Over-Current Protection (OCP), and Inductor/Diode Short Protection
  • Fault Indicator Signal Output
  • Available in a QFN-20 (3mmx4mm) Package
  • Available in AEC-Q100 Grade 1

Typische Anwendungen

  • Automotive Displays
  • Tablets and Notebooks

Weiterführende Informationen

Artikeldaten

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885012206091
SPECWCAP-CSGP MLCCs 50 V(DC), 22 nF, ±10%
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Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre.
ProduktserieWCAP-CSGP MLCCs 50 V(DC)
Kapazität22 nF
Kapazität±10% 
Nennspannung50 V (DC)
Bauform0603 
Betriebstemperatur -55 °C up to +125 °C
Verlustfaktor2.5 %
Isolationswiderstand10 GΩ
KeramiktypX7R Klasse II 
Länge1.6 mm
Breite0.8 mm
Höhe0.8 mm
Pad Dimension0.4 mm
Verpackung7" Tape & Reel 
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