Microchip logo
  • All
  • Products
  • Documents
  • Applications Notes
product primary image

MCP1661

High Voltage 1.3A Isw PWM Boost Regulator

Status: In Production

Features:

  • Up to 92% Efficiency
  • High Output Voltage Range: up to 32V
  • 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
  • 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
  • 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
View More
Overview
Documents
Development Environment
RoHS Information
Buy Now

Device Overview

Summary

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
Parametrics
Name
Value
Regulator Type
Step Up (Boost)
Input Voltage Range Min (V)
2.4
Input Voltage Range Max (V)
5.5
Output Voltage Range Max (V)
32
Output Current (mA) max
200
Quiescent Current (mA) typ
0.25
Switching Frequency (kHz)
500
Operating Temp Range
-40 to 125
Vfb (V)
1.227
Duty Cycle Max (%)
90
SHUTDOWN Current (µA) (Typ)
0.2
Switch current (A) typ
1.3
Alternative Topology
SEPIC, Flyback

Documents

Jump to:

Data Sheet

02/27/2015
1202KB

Development tools data is currently unavailable.

RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MCP1661T-E/MNY
0.014300
0.248485
8
TDFN
2x3x0.8mm
NiPdAu
e4
MCP1661T-E/OT
0.016000
0.049000
5
SOT-23
-
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

Buy from the Microchip Store

Grid
View
Table
View
Filter:
Apply
Clear
Only show products with samples
Product
Leads
Package Type
Temp Range
Packing Media
5K Pricing
Buy