DatasheetsPDF.com

SP6643

Sipex
Part Number SP6643
Manufacturer Sipex
Description Step-Up DC-DC Converter
Published Jun 7, 2005
Detailed Description ® SP6642/6643 Single Alkaline Cell, High Efficiency Step-Up DC-DC Converter s 20mA Output Current at 1.2V Input s +2...
Datasheet PDF File SP6643 PDF File

SP6643
SP6643

Overview
® SP6642/6643 Single Alkaline Cell, High Efficiency Step-Up DC-DC Converter s 20mA Output Current at 1.
2V Input s +2V to +5.
5V Output Range s 0.
85V Guaranteed Start-Up s 83% High Efficiency s 1.
5µA Quiescent Supply Current at V BATT s Reverse Battery Protection s Internal Synchronous Rectifier s 5nA Logic Controlled Shutdown Current From VBATT For The SP6642 s Low-Battery Detection Active LOW Output For The SP6643 s Extremely Small µSOIC Package s Pin-to-pin Compatible With MAX1642 And MAX1643 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.
Designers can control the SP6642 device with a 1nA active LOW shutdown input.
The SP6643 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 SP6643 8 VOUT 7 LX 6 GND 5 FB Rev.
10-6-00 SP6642/6643 High Efficiency Step-Up DC-DC Converter 1 © Copyright 2000 Sipex Corporation ABSOLUTE MAXIMUM RATINGS These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied.
Exposure to absolute maximum rating conditions for extended periods of time may affect reliability.
VBATT to GND-0.
3 to 6.
0V VOUT to GND.
-0.
3 to 6.
0V LX, SHDN, FB, BATTLO, PFO to GND.
.
.
.
-0.
3 to 6.
0V PFI to GND.
.
.
.
...


Similar Datasheet


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site. (Privacy Policy & Contact)