Personal Computer Power FET

Overview

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Status

All versions are No Longer Available. See Ordering Information for recommended replacements.

Description

The DS1640 contains four P-channel power MOS FETs designed as switches to conserve power in personal computer systems. When connected to power management control units, power consumers like disk drives or display panel backlights can be shut down to conserve battery or main power supply energy. The individually controlled P-channel power MOS FETs can handle 300mA each continuously with less than 0.2 volts drop from input to output. The DS1640 requires a +3V to +5V power supply input to power internal logic and to operate a gate bias generator.

Data Sheet

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Key Features

Four P channel power FET switches, each supplying >300mA @ 0.2V drop
Controlled directly from CMOS or TTL level signals
Switching time <10µs at rated supply current
Positive logic signal turns each FET on
Ground or low-level signal turns each FET off
<50nA of current flow in off condition
Low control gate capacitance of <5pF
FET gates can either follow inputs or be latched
Power supply range: +3V to +5V

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Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS1640		N/A	No Longer Available	DS1640+	PDIP; Land Pattern: Not Available	0°C to +70°C	See data sheet
DS1640+		N/A	No Longer Available		PDIP; Land Pattern: Not Available	0°C to +70°C	See data sheet
DS1640S		N/A	No Longer Available	DS1640S+	SOIC; Land Pattern: Not Available	0°C to +70°C	See data sheet
DS1640S+		N/A	No Longer Available		SOIC; Land Pattern: Not Available	0°C to +70°C	See data sheet
DS1640S+T&R		N/A	No Longer Available		SOIC; Land Pattern: Not Available	0°C to +70°C	See data sheet
DS1640S/T&R		N/A	No Longer Available	DS1640S+T&R	SOIC; Land Pattern: Not Available	0°C to +70°C	See data sheet
DS1640S/T&R/		N/A	No Longer Available		SOIC; Land Pattern: Not Available	0°C to +70°C	See data sheet
DS1640SN		N/A	No Longer Available	DS1640SN+	SOIC; Land Pattern: Not Available	-40°C to +85°C	See data sheet
DS1640SN+		N/A	No Longer Available		SOIC; Land Pattern: Not Available	-40°C to +85°C	See data sheet
DS1640SN-W		N/A	No Longer Available		SOIC; Land Pattern: Not Available	-40°C to +85°C	See data sheet

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Rev 1; 1999-11-19
This page last modified: 2007-06-18