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
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
Minimum Output Voltage 1.8 V
Minimum Operating Temperature -40 °C
Maximum Input Voltage 5.5 V
Maximum Operating Temperature +85 °C
Width 3mm
Length 3mm
Maximum Output Voltage 5.5 V
Minimum Input Voltage 0.65 V
150 In stock for delivery within 5 working day(s) (Global Stock)
Price (ex. GST) Each (In a Pack of 5)
$ 1.66
(exc. GST)
$ 1.83
(inc. GST)
Per unit
Per Pack*
5 - 20
25 - 95
100 - 495
500 +
*price indicative
Packaging Options:
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