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Part Number	Status
DS1632	This product is No Longer Available.

Data Sheet

FULL DATA SHEET (PDF, 152kB) Download   E-Mail

Description

The DS1632 PC Power-fail and Reset Controller contains internal circuitry to implement a 32.768kHz oscillator with the addition of only a 6pF 32.768kHz crystal. The DS1632 switches between a battery and the incoming supply, depending on which is greater, with a voltage drop of less than 0.2 volts. It provides resets for both power-up and pushbutton input with automatic resets during power transients. A precision comparator constantly monitors the main power and signals a power failure. The DS1632 also monitors battery power and signals a low-battery condition. Power resets, low battery flags, and power-fail flags make the DS1632 a versatile system manager, with extremely low-power circuitry that conserves system resources in battery-backed applications.

Key Features

Power-fail detect circuitry Pushbutton reset Reset pulse width of either 95ms or 190ms Active high and low resets Accurate 5% or 10% +5-volt power supply monitoring Battery switch On-chip 32.768kHz crystal oscillator Low battery warning 5-volt operation Thermal range: 0°C to +70°C Underwriters Laboratories (UL®) Recognized

Application Notes

Application Note 1209: PC Chipset Power Fail and Reset Controller - DS1632

Design Guides

Microprocessor Supervisory (PDF)

Reliability Reports

Request Reliability Report for: DS1632 Underwriters Laboratories (UL®) Recognized

Software/Models

none

Ordering Information

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. More: SeeFull Data Sheet or Part 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.

Devices: 1-6 of 6

DS1632	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS1632		N/A	No Longer Available	Land Pattern: Not Available	0°C to +70°C	See data sheet
DS1632+		N/A	No Longer Available	Land Pattern: Not Available	0°C to +70°C	See data sheet
DS1632S		N/A	No Longer Available	Land Pattern: Not Available	0°C to +70°C	See data sheet
DS1632S+		N/A	No Longer Available	Land Pattern: Not Available	0°C to +70°C	See data sheet
DS1632S+T&R		N/A	No Longer Available	Land Pattern: Not Available	0°C to +70°C	See data sheet
DS1632S/T&R		N/A	No Longer Available	Land Pattern: Not Available	0°C to +70°C	See data sheet

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