MPQ3367A is a step-up converter with 6 channel current sources. It is designed to drive the white LED arrays as backlighting for small- or medium-sized LCD panels. The device uses peak current mode as its PWM control architecture to regulate the boost converter. Six channel current sources are applied to the LED cathode to adjust LED brightness. The MPQ3367A regulates the current in each LED string to value set by an external current-setting resistor, with 2.5% current matching between strings. A low on resistance MOSFET and headroom voltage are provided to improve efficiency. MPQ3367A has a standard I2C digital interface for easy use. The switching frequency can be configured via a resistor, I2C interface or external clock. The MPQ3367A provides analogue, PWM and mix dimming mode with a PWM input. Dimming mode can be selected with I2C interface or MIX/AD pin. It can automatically decrease the LED current at high temperatures. The MPQ3367A is available in a QFN-24 (4mmx4mm) package.
- 3.5V to 36V input voltage range, 6 channels with maximum 150mA per channel
- Internal 100mohm/50V MOSFET, external sync switching frequency function
- 15000:1 dimming ratio in PWM dimming mode when fPWM <= 200Hz, configurable fSW up to 2.2MHz
- 200:1 dimming ratio at analogue dimming through PWM dimming signal input
- Excellent EMI performance, frequency spread spectrum
- Phase shift function for PWM dimming, 2.5% current matching, cycle-by-cycle current limit
- Disconnect VOUT from VIN. optional LED current auto-decrease at high temperatures
- LED short/open, OTP, OCP, inductor short protection, configurable LED short threshold
- Fault indicator signal output, AEC-Q100 Grade 1 qualified, configurable OVP threshold
- Suitable for use in tablets, notebooks and automotive displays
Footnotes MPS part numbers ending in "-P" and "-Z" are the same parts. P & Z only indicates reel size.
Product details
| Device Topology |
Boost (Step Up) |
| Input Voltage Min |
3.5V |
| Input Voltage Max |
36V |
| Output Voltage Max |
- |
| Output Current Max |
150mA |
| Switching Frequency |
2.2MHz |
| No. of Outputs |
6Outputs |
| IC Mounting |
Surface Mount |
| Driver Case Style |
QFN-EP |
| No. of Pins |
24Pins |
| Operating Temperature Min |
-40°C |
| Operating Temperature Max |
125°C |
| Product Range |
- |
| Automotive Qualification Standard |
AEC-Q100 |
| MSL |
MSL 1 - Unlimited |
Other details
| Brand |
MONOLITHIC POWER SYSTEMS (MPS) |
| Part Number |
MPQ3367AGR-AEC1-P |
| Quantity |
Each (Supplied on Cut Tape) |
| Technical Data Sheet EN |
 |
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