Microchip

MCP1663

High-Voltage Integrated Switch PWM Boost Regulator with UVLO

Topologie: Flyback
Eingangsspannung (min.): 4.25 V
Eingangsspannung (max.): 5.25 V
Schaltfrequenz (min.): 425.00 kHz
Schaltfrequenz (max.): 575.00 kHz
Ausgang 1: 5.00 V / 0.200 A

Erstveröffentlichung am 24.06.2015, Version A vom

Beschreibung

The MCP1663 device is a compact, high-efficiency, fixed-frequency, non-synchronous step-up DC-DC converter which integrates a 36V, 400 mΩ NMOS switch. It provides a space-efficient high-voltage step-up power supply solution for applications powered by either two-cell or three-cell alkaline, Ultimate Lithium, NiCd, NiMH, one-cell Li-Ion or Li-Polymerbatteries. The integrated switch is protected by the 1.8A cycle-by-cycle inductor peak current limit operation. There is an output overvoltage protection which turns off switching in case the feedback resistors are accidentally disconnected or the feedback pin is short-circuited to GND.Low-voltage technology allows the regulator to start-up without high inrush current or output voltage overshoot from a low-voltage input. The device features a UVLO which avoids start-up and operation with low inputs or discharged batteries for two cell-powered applications.For standby applications (EN = GND), the device stops switching, enters sleep mode and consumes 0.3 μA (typical) of input current.MCP1663 is easy to use and allows creating classic boost, SEPIC or flyback DC-DC converters within a small Printed Circuit Board (PCB) area. Allcompensation and protection circuitry is integrated to minimize the number of external components. Ceramic input and output capacitors are used.

Merkmale

  • Up to 92% Efficiency
  • High Output Voltage Range: up to 32V
  • 1.8A Peak Input Current Limit: IOUT> 375 mA @ 5.0V VIN, 12V VOUT
  • IOUT> 200 mA @ 3.3V VIN, 12V VOUT
  • IOUT> 150 mA @ 4.2V VIN, 24V VOUT
  • Input Voltage Range: 2.4V to 5.5V
  • Undervoltage Lockout (UVLO): UVLO@VIN Rising: 2.3V, typical
  • UVLO@VIN Falling: 1.85, typical
  • No Load Input Current: 250 µA, typical
  • Sleep mode with 200 nA Typical Quiescent Current
  • PWM Operation with Skip mode: 500 kHz
  • Feedback Voltage Reference: VFB= 1.227V
  • Cycle-by-Cycle Current Limiting
  • Internal Compensation
  • Inrush Current Limiting and Internal Soft-Start
  • Output Overvoltage Protection (OVP) in the event of:
  • Feedback pin shorted to GND Disconnected feedback divider
  • Overtemperature Protection
  • Easily Configurable for SEPIC or Flyback Topologies
  • Available Packages:
  • 5-Lead SOT-23
  • 2x3 8-Lead TDFN Remarks:RECOMMENDEDINDUCTORSRefer page no.17

Artikel

  Artikel Nr. SPEC Produktserie VOut1
(V)
IOut1
(A)
L1
(µH)
n ISAT 1
(A)
LSmin.
(µH)
VT
(V (AC))
Bauform IC-Referenz Vin Muster
750310799 PDF WE-FB Sperrwandlerübertrager geeignet für LT3573/ LT3574/ LT3575/ LT3748 15 0.4 25 1 : 1 2 0.125 1500 EP7 LT3573 18 - 30 V (DC)

Weitere Anwendungen und Artikel von Würth Elektronik zu diesem IC

  • MCP1663
    Topologie: Boost, Eingangsspannung (min.): 2.40 V, Eingangsspannung (max.): 5.50 V, Schaltfrequenz (min.): 425.00 kHz, Schaltfrequenz (max.): 575.00 kHz, Ausgang 1: 32.00 V / 1.800 A
  • MCP1663
    Topologie: Boost, Eingangsspannung (min.): 2.40 V, Eingangsspannung (max.): 5.50 V, Schaltfrequenz (min.): 425.00 kHz, Schaltfrequenz (max.): 575.00 kHz, Ausgang 1: 32.00 V / 1.800 A
  • MCP1663
    Topologie: Boost, Eingangsspannung (min.): 2.40 V, Eingangsspannung (max.): 5.50 V, Schaltfrequenz (min.): 425.00 kHz, Schaltfrequenz (max.): 575.00 kHz, Ausgang 1: 32.00 V / 1.800 A
  • MCP1663
    Topologie: Buck-Boost, Eingangsspannung (min.): 3.30 V, Eingangsspannung (max.): 4.20 V, Schaltfrequenz (min.): 425.00 kHz, Schaltfrequenz (max.): 575.00 kHz, Ausgang 1: 3.30 V / 0.150 A