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MICROCHIP  MCP1643-I/MS  LED Driver, Boost (Step Up), 500 mV to 5V input, 1 Output, 1 MHz switch-freq., 5Vout, MSOP-8

MICROCHIP MCP1643-I/MS
Technical Data Sheet (727.35KB) EN Consultaţi toate documentele tehnice

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Prezentare generală a produsului

The MCP1643-I/MS is a low start-up voltage synchronous boost LED Constant Current Regulator optimized to drive one LED with constant current that operates from one and two-cell alkaline and NiMH/NiCd batteries. The compact high-efficiency fixed frequency step-up converter can also drive two red/green/yellow series connection LEDs. Low-voltage technology allows the regulator to start-up without high-output voltage and load-current overshoot from a low 0.65V input. High efficiency is accomplished by integrating the low resistance N-channel boost switch and synchronous P-channel switch. All compensation and protection circuitry are integrated to minimize external components. The internal feedback (VFB) voltage is set to 120mV for low power dissipation when sensing and regulating LED current. The device features an output over-voltage protection that limits the output voltage to 5V typical, in case the LED fails or output load is disconnected.
  • Maximum input voltage <VLED <5V
  • Over-voltage protection
  • Minimal power loss on sense resistor
  • Pulse-width modulation mode operation
  • Internal synchronous rectifier
  • Internal compensation
  • Inrush current limiting
  • Internal soft-start
  • Shutdown - True load disconnect
  • Dimming control by variable duty cycle
  • Over-temperature protection

Detalii tehnice

Device Topology:
Boost (Step Up)
No. of Outputs:
1Outputs
Output Current:
-
Output Voltage:
5V
Driver Case Style:
MSOP
No. of Pins:
8Pins
Input Voltage Min:
500mV
Input Voltage Max:
5V
Switching Frequency:
1MHz
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Packaging:
Each
Product Range:
-
Automotive Qualification Standard:
AEC-Q100
MSL:
MSL 2 - 1 year
SVHC:
No SVHC (17-Dec-2015)

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Aplicaţii

  • Automotive;
  • LED Lighting;
  • Portable Devices

Legislaţie şi reglementări privind protecţia mediului

Nivel de sensibilitate la umezeală:
MSL 2 - 1 year
Ţara de origine:
United States

Tara in care ultimul proces semnificativ de fabricare a fost efectuat

Conformitate cu RoHS:
Da
Nr. tarif:
85423990
Greutate (kg):
.000454

Produse asociate