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Intersil Electronic Components Datasheet

ICL7673 Datasheet

Automatic Battery Back-Up Switch

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ICL7673 pdf
Data Sheet
December 3, 2015
ICL7673
FN3183.5
Automatic Battery Back-Up Switch
The Intersil ICL7673 is a monolithic CMOS battery backup
circuit that offers unique performance advantages over
conventional means of switching to a backup supply. The
ICL7673 is intended as a low-cost solution for the switching
of systems between two power supplies; main and battery
backup. The main application is keep-alive-battery power
switching for use in volatile CMOS RAM memory systems
and real time clocks. In many applications this circuit will
represent a low insertion voltage loss between the supplies
and load. This circuit features low current consumption, wide
operating voltage range, and exceptionally low leakage
between inputs. Logic outputs are provided that can be used
to indicate which supply is connected and can also be used
to increase the power switching capability of the circuit by
driving external PNP transistors.
Ordering Information
PART
NUMBER
TEMP. RANGE
(°C)
PACKAGE
PKG.
DWG. #
ICL7673CPA No
longer available
or supported.
Recommended
Replacement
ICL7673CPAZ
0 to 70
8 Ld PDIP
E8.3
ICL7673CPAZ
(See Note)
0 to 70
8 Ld PDIP*
(Pb-free)
E8.3
ICL7673CBA No
longer available
or supported.
Recommended
Replacement
ICL7673CBAZA-T
0 to 70
8 Ld SOIC (N) M8.15
ICL7673CBAZA
(See Note)
0 to 70
8 Ld SOIC (N) M8.15
(Pb-free)
ICL7673CBAZA-T
(See Note)
0 to 70
8 Ld SOIC (N) M8.15
(Pb-free)
*Pb-free PDIPs can be used for through hole wave solder
processing only. They are not intended for use in Reflow solder
processing applications.
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100%
matte tin plate termination finish, which are RoHS compliant and
compatible with both SnPb and Pb-free soldering operations. Intersil
Pb-free products are MSL classified at Pb-free peak reflow
temperatures that meet or exceed the Pb-free requirements of
IPC/JEDEC J STD-020.
Features
• Automatically Connects Output to the Greater of Either
Input Supply Voltage
• If Main Power to External Equipment is Lost, Circuit Will
Automatically Connect Battery Backup
• Reconnects Main Power When Restored
• Logic Indicator Signaling Status of Main Power
• Low Impedance Connection Switches
• Low Internal Power Consumption
• Wide Supply Range: . . . . . . . . . . . . . . . . . . . 2.5V to 15V
• Low Leakage Between Inputs
• External Transistors May Be Added if Very Large
Currents Need to Be Switched
• Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• On Board Battery Backup for Real-Time Clocks,
Timers, or Volatile RAMs
• Over/Under Voltage Detector
• Peak Voltage Detector
• Other Uses:
- Portable Instruments, Portable Telephones, Line
Operated Equipment
Pinout
ICL7673 (SOIC, PDIP)
TOP VIEW
VO 1
VS 2
SBAR 3
GDN 4
8 VP
7 NC
6 PBAR
5 NC
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas LLC.
Copyright © Intersil Americas LLC 1999-2005. 2015. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.



Intersil Electronic Components Datasheet

ICL7673 Datasheet

Automatic Battery Back-Up Switch

No Preview Available !

ICL7673 pdf
Functional Block Diagram
VP P1
VS
P2
-
+
ICL7673
VO
SBAR
PBAR
GND
VP > VS, P1 SWITCH ON AND PBAR SWITCH ON
VS > VP, P2 SWITCH ON AND SBAR SWITCH ON
2 FN3183.5
December 3, 2015



Intersil Electronic Components Datasheet

ICL7673 Datasheet

Automatic Battery Back-Up Switch

No Preview Available !

ICL7673 pdf
ICL7673
Absolute Maximum Ratings
Input Supply (VP or VS) Voltage . . . . . . . . . . . . GND - 0.3V to +18V
Output Voltages PBAR and SBAR . . . . . . . . . . . GND - 0.3V to +18V
Peak Current
Input VP (at VP = 5V) (Note 1) . . . . . . . . . . . . . . . . . . . . . . . 38mA
Input VS (at VS = 3V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30mA
PBAR or SBAR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150mA
Operating Conditions
Temperature Range:
ICL7673C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Thermal Information
Thermal Resistance (Typical, Note 2)
JA (°C/W) JC (°C/W)
PDIP Package* . . . . . . . . . . . . . . . . . . 150
N/A
Plastic SOIC Package . . . . . . . . . . . . . 180
N/A
Maximum Storage Temperature. . . . . . . . . . . . . . . . . -65°C to 150°C
Maximum Lead Temperature (Soldering, 10sec). . . . . . . . . . . 300°C
(SOIC - Lead Tips Only)
*Pb-free PDIPs can be used for through hole wave solder processing
only. They are not intended for use in Reflow solder processing
applications.
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES:
1. Derate above 25°C by 0.38mA/°C.
2. JA is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications TA = 25°C Unless Otherwise Specified
PARAMETER
SYMBOL
TEST CONDITIONS
Input Voltage
Quiescent Supply Current
Switch Resistance P1 (Note 1)
Temperature Coefficient of Switch
Resistance P1
VP VS = 0V, ILOAD = 0mA
VS VP = 0V, ILOAD = 0mA
I+ VP = 0V, VS = 3V, ILOAD = 0mA
rDS(ON)P1 VP = 5V, VS = 3V, ILOAD = 15mA
At TA = +85°C
VP = 9V, VS = 3V, ILOAD = 15mA
VP = 12V, VS = 3V, ILOAD = 15mA
TC(P1) VP = 5V, VS = 3v, ILOAD = 15mA
Switch Resistance P2 (Note 1)
Temperature Coefficient of Switch
Resistance P2
rDS(ON)P2 VP = 0V, VS = 3V, ILOAD = 1mA
At TA = +85°C
VP = 0V, VS = 5V, ILOAD = 1mA
VP = 0V, VS = 9V, ILOAD = 1mA
TC(P2) VP = 0V, VS = 3V, ILOAD = 1mA
Leakage Current (VP to VS)
Leakage Current (VP to VS)
Open Drain Output Saturation Voltages
Open Drain Output Saturation Voltages
IL(PS)
IL(SP)
VOPBAR
VOSBAR
VP = 5V, VS = 3V, ILOAD = 10mA
At TA = +85°C
VP = 0V, VS = 3V, ILOAD = 10mA
at TA = +85°C
VP = 5V, VS = 3V, ISINK = 3.2mA, ILOAD = 0mA
At TA = 85°C
VP = 9V, VS = 3V, ISINK = 3.2mA, ILOAD = 0mA
VP = 12V, VS = 3V, ISINK = 3.2mA
ILOAD = 0mA
VP = 0V, VS = 3V, ISINK = 3.2mA, ILOAD = 0mA
at TA = +85°C
VP = 0V, VS = 5V, ISINK = 3.2mA ILOAD = 0mA
VP = 0V, VS = 9V, ISINK = 3.2mA ILOAD = 0mA
MIN TYP MAX UNITS
2.5 - 15
V
2.5 - 15
V
- 1.5 5
A
- 8 15
- 16 -
-6-
-5-
- 0.5 - %/°C
- 40 100
- 60 -
- 26 -
- 16 -
- 0.7 -
%/°C
- 0.01 20
- 35 -
- 0.01 50
- 120 -
- 85 400
- 120 -
- 50 -
- 40 -
nA
nA
nA
nA
mV
mV
mV
mV
- 150 400 mV
- 210 -
mV
- 85 -
mV
- 50 -
mV
3 FN3183.5
December 3, 2015




Part Number ICL7673
Description Automatic Battery Back-Up Switch
Maker Intersil Corporation
Total Page 8 Pages
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