Microchip MCP1642B-ADJI/MS, Boost Converter, Step Up 800mA Adjustable, 1.8 → 5.5 V, 1.15 MHz 8-Pin, MSOP

  • RS Stock No. 869-6104
  • Mfr. Part No. MCP1642B-ADJI/MS
  • Manufacturer Microchip
Product overview and Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
Product Details

MCP1642 Synchronous Boost Converter

The MCP1642 family of devices from Microchip are compact, high-efficiency, fixed-frequency, synchronous step-up DC-DC converters. These regulators are designed for applications powered by alkaline, NiCd, NiMH, Li-Ion or Li-Polymer batteries.


Up to 96% Typical Efficiency
1.8A Typical Peak Input Current Limit
IOUT > 175 mA @ 1.2V VIN, 3.3V VOUT
IOUT > 600 mA @ 2.4V VIN, 3.3V VOUT
IOUT > 800 mA @ 3.3V VIN, 5.0V VOUT
IOUT > 1A @ VIN > 3.6V, 5.0V VOUT
Low Start-up Voltage: 0.65V
Minimum Operating Input Voltage: 0.35V
Maximum Input Voltage < VOUT < 5.5V
Adjustable Output Voltage Range: 1.8V to 5.5V
PWM Operation at 1 MHz
Shutdown Current (All States): < 1 μA
Internal Synchronous Rectifier
Internal Compensation
Inrush Current Limiting and Internal Soft-Start
True Load Disconnect Shutdown (MCP1642B)
Input-to-Output Bypass Option (MCP1642D)
Low Noise, Anti-Ringing Control
Over-temperature Protection

Attribute Value
Regulator Function Step Up
Maximum Output Current 800mA
Number of Outputs 1
Line Regulation ±0.5 %/V
Load Regulation ±1.5 %
Mounting Type Surface Mount
Package Type MSOP
Pin Count 8
Output Type Adjustable
Maximum Switching Frequency 1.15 MHz
Switching Regulator Yes
Dimensions 3 x 3 x 0.95mm
Height 0.95mm
Width 3mm
Maximum Input Voltage 5.5 V
Minimum Input Voltage 0.65 V
Maximum Output Voltage 5.5 V
Minimum Output Voltage 1.8 V
Minimum Operating Temperature -40 °C
Maximum Operating Temperature +85 °C
Length 3mm
235 In stock for delivery within 3 working days
Price Each (In a Pack of 5)
HK$ 9.376
(exc. GST)
Per unit
Per Pack*
5 - 20
25 - 95
100 - 495
500 +
*price indicative
Packaging Options:
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