The MCP1661 device is a compact, high-efficiency, fixed-frequency, non-synchronous step-up DC-DCconverter which integrates a 36V, 800 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, Lithium, NiCd, NiMH, one-cell Li-Ion or Li-Polymer batteries.
Additional Features
Up to 92% Efficiency
High Output Voltage Range: up to 32V
1.3A Peak Input Current Limit:
IOUT> 200 mA @ 5.0V VIN, 12V VOUT
IOUT> 125 mA @ 3.3V VIN, 12V VOUT
IOUT> 100 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 or 2x3 8-Lead TDFN
The MCP1661 device is a compact, high-efficiency, fixed-frequency, non-synchronous step-up DC-DCconverter which integrates a 36V, 800 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, Lithium, NiCd, NiMH, one-cell Li-Ion or Li-Polymer batteries.
Additional Features
- Up to 92% Efficiency
- High Output Voltage Range: up to 32V
- 1.3A Peak Input Current Limit:
- IOUT> 200 mA @ 5.0V VIN, 12V VOUT
- IOUT> 125 mA @ 3.3V VIN, 12V VOUT
- IOUT> 100 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 or 2x3 8-Lead TDFN
