ca3273 Intersil Corporation, ca3273 Datasheet

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ca3273

Manufacturer Part Number
ca3273
Description
High-side Driver
Manufacturer
Intersil Corporation
Datasheet
April 1994
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
407-727-9207
Features
• Equivalent High Pass P-N-P Transistor
• Current Limiting . . . . . . . . . . . . . . . . . . . . . .0.6A to 1.2A
• Over-Voltage Shutdown . . . . . . . . . . . . . . +25V to +40V
• Junction Temperature Thermal Limit. . . . . . . . . +150
• Equivalent Beta of 25. . . . . . . . . . . . . . . . . . 400mA/0.5V
• Internal Bandgap Voltage and Current Reference
Applications
• Fuel Pump Driver
• Relay Driver
• Solenoid Driver
• Stepper Motor Driver
• Remote Power Switch
• Logic Control Switch
Pinout
|
Copyright
©
Intersil Corporation 1999
CA3273 (SIP)
TOP VIEW
(3) V
(2) V
(1) V
O
SW
CC
(LOAD)
(SUPPLY)
(CONTROL)
o
C
3-3
Description
The CA3273 is a power IC equivalent of a P-N-P pass tran-
sistor operated as a high-side-driver current switch in either
the saturated (ON) or cutoff (OFF) modes. The CA3273
incorporates circuitry to protect the pass currents, excessive
input voltage, and thermal overstress. The high-side driver is
intended for general purpose, automotive and potentially
high-stress applications. If high-stress conditions exist, the
use of an external zener diode of 35V or less between sup-
ply and load terminals may be required to prevent damage
due to severe conditions (such as load dump, reverse bat-
tery and positive or negative transients). The CA3273 is
designed
(VBAT = 13V) condition without permanent damage to the
IC. The CA3273 is supplied in a modified 3-lead TO-202
plastic power package.
Ordering Information
Block Diagram
CA3273
V
PIN 1
NUMBER
CC
PART
CA3273
I
to
CC
DRIVE AND LIMITING
withstand
TEMPERATURE
-40
CONTROL
R
o
RANGE
C to +85
S
CA3273
OUTPUT PASS
TRANSISTOR
PIN 2
V
SW
o
a
C
nominal
CONTROL
High-Side Driver
INPUT
TO-202 Modified SIP
File Number
I
O
PACKAGE
reverse-battery
V
PIN 3
O
LOAD
R
2113.4
L

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ca3273 Summary of contents

Page 1

... Copyright Intersil Corporation 1999 Description The CA3273 is a power IC equivalent of a P-N-P pass tran- sistor operated as a high-side-driver current switch in either the saturated (ON) or cutoff (OFF) modes. The CA3273 incorporates circuitry to protect the pass currents, excessive input voltage, and thermal overstress. The high-side driver is ...

Page 2

... T is device junction temperature thermal resistance Thermal limiting occurs at +150 C on the chip. Specifications CA3273 Thermal Information Thermal Resistance Plastic SIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . +70 Maximum Power Dissipation +25 C Ambient, T +12V Derate above +25 CC Maximum Junction Temperature, T Ambient Operating Temperature Range ...

Page 3

... INPUT BANDGAP VOLTAGE/CURRENT REFERENCE FIGURE 1. FUNCTIONAL BLOCK DIAGRAM OF CA3273 +24V CA3273 (SUPPLY INPUT CONTROL ON INPUT 1K 2N5320 OFF FIGURE 2. TYPICAL APPLICATION WITH ZENER DIODE FOR OVER-VOLTAGE PROTECTION WITH INDUCTIVE LOAD SWITCHING. V SHOULD BE LESS THAN Z 35V. WHEN CURRENT IS SWITCHED OFF IN THE OUTPUT LOAD (L), THE INDUCTIVE KICK PULSE GOES NEGATIVE ...

Page 4

... For information regarding Intersil Corporation and its products, see web site http://www.intersil.com Sales Office Headquarters NORTH AMERICA Intersil Corporation P. O. Box 883, Mail Stop 53-204 Melbourne, FL 32902 TEL: (407) 727-9207 FAX: (407) 724-7240 CA3273 EUROPE Intersil SA Mercure Center 100, Rue de la Fusee 1130 Brussels, Belgium TEL: (32) 2.724.2111 FAX: (32) 2.724.22.05 ...

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