DS1836C-20 Maxim Integrated Products, DS1836C-20 Datasheet

IC MICROMAN 3.3V ACT LO 20% 8DIP

DS1836C-20

Manufacturer Part Number
DS1836C-20
Description
IC MICROMAN 3.3V ACT LO 20% 8DIP
Manufacturer
Maxim Integrated Products
Series
MicroManagerr
Type
Battery Backup Circuitr
Datasheet

Specifications of DS1836C-20

Number Of Voltages Monitored
1
Output
Push-Pull, Totem Pole
Reset
Active Low
Reset Timeout
200 ms Minimum
Voltage - Threshold
2.72V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
FEATURES
DESCRIPTION
The DS1836 MicroManager performs three vital system functions. First, a precision temperature-
compensated reference and comparator circuit monitor the status of the voltage on V
of-tolerance condition is detected, an internal power-fail signal is generated that forces the reset active. If
V
versions). When V
Reset will remain active for 350 ms after V
Lastly, the DS1836 supports a sense input that sends a non-maskable interrupt whenever the sense input
drops below 1.25V.
www.maxim-ic.com
CC
5V or 3.3V power-on reset
True 3V operation power switch
Switches to battery at 3.8V (2.6V for 3.3V
versions)
Excellent for systems designed to operate
with dual power supplies
Asserts resets during power transients
Maintains reset for 350ms after V
an in-tolerance condition
Reduces need for discrete components
Precision temperature-compensated voltage
reference and voltage sensor
8-pin DIP or space saving 8-pin SO surface
mount available
CMOS reset output for low current operation
Operating temperature of -40°C to +85°C
Perfect for PIC microprocessor applications
continues to degrade, it switches to the battery supply when V
CC
exceeds 3.9V (2.8V for 3.3V versions); V
CC
returns to
CC
returns to an in-tolerance condition.
1 of 9
PIN ASSIGNMENT
PIN DESCRIPTION
V
V
NC
V
GND
IN
NMI
RST
CC
BAT
OUT
(*RST)
3.3V/5V MicroManager
DS1836A/C (*DS1836B/D)
OUT
V
V
V
V
CC
V
V
NC
NC
OUT
OUT
BAT
BAT
CC
CC
will again be supplied from V
drops below 3.8V (2.6V for 3.3V
8-Pin DIP (300mil)
8-Pin SO (150mil)
1
2
3
4
DS1836/A/B/C/D
1
2
3
4
- Power Supply Input
- Battery Supply Input
- No Connect
- Power Supply Output
- Ground
- Sense Input
- Non-maskable Interrupt
- Reset Output
8
7
6
5
8
7
6
5
CC
RST(*RST)
NMI
IN
GND
RST(*RST)
NMI
IN
GND
and when an out-
121906
CC
.

Related parts for DS1836C-20

DS1836C-20 Summary of contents

Page 1

FEATURES 5V or 3.3V power-on reset True 3V operation power switch Switches to battery at 3.8V (2.6V for 3.3V versions) Excellent for systems designed to operate with dual power supplies Asserts resets during power transients Maintains reset for 350ms ...

Page 2

... V input until V BAT to V and will not switch back will be drawn from the supply with the highest voltage: either V Power Switch (DS1836C & D) The DS1836 switches the V OUT current from the V input until V BAT to V and will not switch back to V ...

Page 3

Non-Maskable Interrupt The DS1836 generates a non-maskable interrupt ( comparator monitors the voltage level at the IN pin relative to an on-chip reference generated by an internal band gap. The IN pin is a high impedance input allowing for a ...

Page 4

NON-MASKABLE INTERRUPT CIRCUIT EXAMPLE Figure SENSE Example: Therefore: TIMING DIAGRAM: NON-MASKABLE INTERRUPT Figure 1. 4.50V at the trip point SENSE 100kΩ 100k 4 ...

Page 5

... Figure 3). APPLICATION DIAGRAM: VALID RST CC TIMING DIAGRAM: POWER-UP Figure 6 RST is in the inactive or high state this arrangement will draw current RST ON THE DS1836A OR DS1836C Figure DS1836A/B/C/D to GND (see Figure RST outputs even if all supply inputs are at 0V. RST ...

Page 6

TIMING DIAGRAM: POWER-DOWN Figure 7 TIMING DIAGRAM: POWER SWITCH Figure DS1836A/B/C/D ...

Page 7

ABSOLUTE MAXIMUM RATINGS* Voltage Pin Relative to Ground CC BAT Voltage on any I/O Pin Relative to Ground** Operating Temperature Range Storage Temperature Range Soldering Temperature * This is a stress rating only and functional operation ...

Page 8

... BAT RST V Trip Point DS1836A(or B)-05 CC RST V Trip Point DS1836A(or B)-10 CC RST V Trip Point DS1836C(or D)-10 CC RST V Trip Point DS1836C(or D)-20 CC Power Supply Trip Points (V DS1836 Power Supply Trip Points (V DS1836 Leakage Current BAT Power Supply Trip Points (V DS1836 Power Supply Trip Points (V ...

Page 9

C ELECTRICAL CHARACTERISTICS A PARAMETER V to Delay NMI TP Reset Active Time V Slew Rate ( INTP(MIN) V Detect to RST CC V Slew Rate ( INTP(MAX) V Detect to RST CC V ...

Related keywords