MCP1661 Series

High Voltage 1.3A Isw PWM Boost Regulator

Catalog

High Voltage 1.3A Isw PWM Boost Regulator

Part	Output Configuration	Package / Case	Number of Outputs	Voltage - Output (Max) [Max]	Voltage - Output (Min/Fixed)	Function	Supplier Device Package	Topology	Voltage - Input (Min) [Min]	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Input (Max) [Max]	Synchronous Rectifier	Mounting Type	Frequency - Switching	Current - Output	Output Type
Microchip Technology MCP1661T-E/OT	Positive	SC-74A SOT-753	1	32 V	2.4 V	Step-Up	SOT-23-5	Boost	2.4 V	-40 °C	125 °C	5.5 V		Surface Mount	500 kHz	200 mA	Adjustable
Microchip Technology MCP1661T-E/MNY	Positive	8-WFDFN Exposed Pad	1	32 V	2.4 V	Step-Up	8-TDFN (2x3)	Boost	2.4 V	-40 °C	125 °C	5.5 V		Surface Mount	500 kHz	200 mA	Adjustable

Catalog

High Voltage 1.3A Isw PWM Boost Regulator

Key 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

Description

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.