DATASHEET

CA-3273
High-Side Driver
December 15, 2011
Features
Description
• Equivalent High Pass P-N-P Transistor
The CA3273 is a power IC equivalent of a P-N-P pass transistor 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 supply and load terminals may be required to prevent damage
due to severe conditions (such as load dump, reverse battery 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.
• Current Limiting . . . . . . . . . . . . . . . . . . . . . . 0.6A to 1.2A
• Over-Voltage Shutdown . . . . . . . . . . . . . . +25V to +40V
• Junction Temperature Thermal Limit. . . . . . . . . +150oC
• Equivalent Beta of 25. . . . . . . . . . . . . . . . . . 400mA/0.5V
• Internal Bandgap Voltage and Current Reference
Applications
• Fuel Pump Driver
• Relay Driver
• Solenoid Driver
Ordering Information
• Stepper Motor Driver
• Remote Power Switch
PART
NUMBER
• Logic Control Switch
TEMPERATURE
RANGE
-40oC to +85oC
CA3273
Pinout
PACKAGE
TO-202 Modified SIP
Block Diagram
CA3273 (SIP)
TOP VIEW
VCC
(3) VO (LOAD)
(2) VSW (CONTROL)
ICC
RS
OUTPUT PASS
TRANSISTOR
IO
VO
PIN 3
PIN 1
RL
LOAD
DRIVE AND LIMITING
CONTROL
(1) VCC (SUPPLY)
CA3273
PIN 2
VSW
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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CONTROL
INPUT
File Number
2113.5
1
Specifications CA-3273
Absolute Maximum Ratings
Thermal Information
Fault Max, Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . 40V
Maximum Operating VCC:
At IO = 400mA (-40oC to +85oC Ambient) . . . . . . . . . . . . . . 16V
At IO = 600mA (-40oC to +25oC Ambient) . . . . . . . . . . . . . . 24V
Max. Positive Output Peak Pulse, VSW Open . . . . . . . . . .VCC +12V
Max. Operating Output Load Current . . . . . . . . . . . . . . . . . . 600mA
Short Circuit Load Current, ISC . . . . . . . . . . . . . . . . Internal Limiting
Reverse Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -13V
Thermal Resistance
θJA
Plastic SIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . +70oC/W
Maximum Power Dissipation, PD
At +25oC Ambient, TA (Note 1). . . . . . . . . . . . . . . . . . . . . . . 1.8W
Derate above +25oC (No Heat Sink) . . . . . . . . . . . . . 14.3mW/oC
Maximum Junction Temperature, TJ (Note 2) . . . . . . . . . . . . 150oC
Ambient Operating Temperature Range . . . . . . . . . -40oC to +85oC
Storage Temperature Range . . . . . . . . . . . . . . . . . . -40oC to +150oC
Lead Temperature (Soldering 10s max) . . . . . . . . . . . . . . . . +265oC
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.
Electrical Specifications
TA = -40oC to +85oC, Unless Otherwise Noted, See Block Diagram for Test Pin Reference
PARAMETERS
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Operating Voltage Range
VCC
VCC Reference to VSW
4
-
24
V
Saturation Voltage(VCC - VO)
VSAT
IO = -400mA, VSW = 0V, VCC = 16V
-
-
0.5
V
40
-
-
Ω
Operating Load
RL
VSW = 0V (Switch ON)
TA = +85oC, VCC = 16V
o
TA = +25 C,VCC = 24V
Over-Voltage Shutdown Threshold
Over-Current Limiting
VCC(THD)
VSW = 0V, RL = 1kΩ, Increase VCC,
(VO goes low)
25
33
40
V
IO(LIM)
VCC =16V, VSW = 1V (Switch ON)
-
-
1.2
A
-
150
-
o
IO = 0mA
-
-15
-
mA
IO = -400mA
-
-22
-
mA
-
-33
-
mA
VCC = 24V
-50
-
-
mA
VCC = 7V
-50
-
-
mA
VCC = 24V,VSW = 23V
-200
-
+50
μA
VCC = 7V, VSW = 6V
-200
-
+50
μA
VSW =16V
-100
-
+100
μA
VSW =15V
-100
-
+100
μA
Over-Temperature Limiting
TLIM
Control Current, Switch ON
ISW
Control Current, Max. Load,
Switch ON
Max. Control Current,High and
Low VCC
Min. Control Current, No Load,
Switch OFF
Output Current Leakage
Ω
40
VCC =16V, VSW = 0V
VCC = 24V, VSW = 0V,
IO = -600mA
ISW(MAX)
ISW(NL)
IO(LEAK)
C
RL = 40Ω, VSW = 1V
VO = Open, (Switch OFF)
VO = 0V, VCC = 16V, (Switch OFF)
NOTES:
1. The calculation for dissipation and junction temperature rise due to dissipation is: PD = (VCC - VO)x I O + VCC x ISW and
TJ = TA + PD x θJA where TJ is device junction temperature, TA is ambient temperature and θJA is the junction-to-ambient
thermal resistance.
2. Thermal limiting occurs at +150oC on the chip.
2
CA-3273
OUTPUT PASS
TRANSISTOR
RS
VCC
VO
1
INPUT
3
BANDGAP
VOLTAGE/CURRENT
REFERENCE
OVER-VOLTAGE
SHUTDOWN
THERMAL
LIMIT
OUTPUT
CURRENT
LIMIT
OUTPUT DEVICE
BASE DRIVE
CONTROL CIRCUIT
2
VSW
CONTROL INPUT
FIGURE 1. FUNCTIONAL BLOCK DIAGRAM OF CA3273
VZ
VCC
VCC
+4 TO +24V
CA3273
(SUPPLY INPUT)
VSW
L
VSW
ON
CONTROL
INPUT
ON
OFF
2N5320
OR EQUIVALENT
OFF
FIGURE 2. TYPICAL APPLICATION WITH ZENER DIODE FOR
OVER-VOLTAGE PROTECTION WITH INDUCTIVE
LOAD SWITCHING. VZ SHOULD BE LESS THAN
35V. WHEN CURRENT IS SWITCHED OFF IN THE
OUTPUT LOAD (L), THE INDUCTIVE KICK PULSE
GOES NEGATIVE. THE CLAMPED CLAMP LEVEL
OF THE NEGATIVE GOING PULSE IS VCC - VZ.
DISSIPATION WATTS (W)
VZ
CONTROL
INPUT
2N5320
OR EQUIVALENT
FIGURE 3. OPTIONAL RANGE SHIFTING OF THE VCC INPUT
VOLTAGE USING A ZENER DIODE TO OFFSET
THE VSW CONTROL PIN. (I.E.,THE OVER-VOLTAGE SHUTDOWN THRESHOLD WILL BE INCREASED TO VCC(THD) + VZ AND THE MINIMUM
VCC OPERATING VOLTAGE IS VZ + 4V).
RESISTIVE
DERATING 70oC/W
(WITHOUT HEAT SINK)
LAMP
1
SOLENOID
RELAY
0
-50
-25
0
25
50
RL
40Ω
1KΩ
1KΩ
2
VO
CA3273
VO
75
100
125
150
TEMPERATURE (oC)
FIGURE 4. DISSIPATION DERATING CURVES
FIGURE 5. TYPICAL LOADS
3
CA-3273
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Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time without notice.
Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may
result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see web site http://www.intersil.com
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