SP6643 - Step-Up DC-DC Converter

Sipex

SP6643 Datasheet Preview — Preview of SP6643 PDF

Datasheet Details

Part number	SP6643
Manufacturer	Sipex
File Size	245.72 KB
Description	Step-Up DC-DC Converter
Datasheet	SP6643_SipexCorporation.pdf

SP6643 Product details

Description

The SP6642/6643 devices are high-efficiency, low-power step-up DC-DC converters for +1V inputs ideal for single alkaline cell applications such as pagers, remote controls, and other low-power portable end products.

Features

an active LOW output for low-battery conditions. Both devices contain a 0.8Ω synchronous rectifier, an oscillator, a 0.6Ω N-channel MOSFET power switch, an internal voltage reference, circuitry for pulse-frequency-modulation, and an under voltage comparator. The output voltage for the SP6642/6643 devices is preset to +3.3V + 4% or can be adjusted from +2V to +5.5V by manipulating two external resistors. VBATT 1 PFI 2 PFO 3 SHDN 4 SP6642 8 VOUT 7 LX 6 GND 5 FB VBATT 1 PFI 2 BATTLO 3 PFO 4 SP.

📁 SP6643 Similar Datasheet

SP6650 - High Efficiency 600mA Synchronous Buck Regulator (Exar)
SP6655 - High Efficiency 400mA Synchronous Buck Regulator (EXAR)
SP6659 - Synchronous Buck Regulator (Sipex Corporation)
SP6669 - 600mA 1.5MHz Synchronous Step Down Converter (Exar)
SP6669EB - 800mA 1.5MHz Synchronous Step-Down Converter (MaxLinear)
SP6682 - High Efficiency White LED Charge Pump Regulator (Exar)
SP6685 - 700mA Buck/Boost Charge Pump LED Driver (Exar)
SP6686 - 400mA Buck/Boost Charge Pump LED Driver (Exar)

Other Datasheets by Sipex

SP6641A - 500mA Alkaline DC/DC Boost Regulator
SP6641B - 500mA Alkaline DC/DC Boost Regulator
SP6642 - Step-Up DC-DC Converter
SP6644 - High Efficiency Boost DC-DC Regulator
SP6645 - High Efficiency Boost DC-DC Regulator
SP6648 - Ultra-low Quiescent Current / High Efficiency Boost Regulator

Published: Jun 7, 2005 |