CA3273 Datasheet, PDF (1/4 Pages) Intersil Corporation – High-Side Driver

CA3273
April 1994
High-Side Driver
Features
Description
• 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^oC
• Equivalent Beta of 25. . . . . . . . . . . . . . . . . . 400mA/0.5V
• Internal Bandgap Voltage and Current Reference
Applications
• Fuel Pump Driver
• Relay Driver
• Solenoid Driver
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 to withstand a nominal reverse-battery
(VBAT = 13V) condition without permanent damage to the
IC. The CA3273 is supplied in a modified 3-lead TO-202
plastic power package.
• Stepper Motor Driver
• Remote Power Switch
• Logic Control Switch
Ordering Information
PART
NUMBER
TEMPERATURE
RANGE
PACKAGE
CA3273
-40^oC to +85^oC TO-202 Modified SIP
Pinout
CA3273 (SIP)
TOP VIEW
(3) V_O (LOAD)
(2) V_SW (CONTROL)
(1) V_CC (SUPPLY)
Block Diagram
V_CC
PIN 1
OUTPUT PASS
I_CC
R_{S TRANSISTOR IO}
DRIVE AND LIMITING
CONTROL
V_O
PIN 3
R_L
LOAD
CA3273
PIN 2
V_SW
CONTROL
INPUT
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
407-727-9207 | Copyright © Intersil Corporation 1999
3-3
File Number 2113.4