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. 1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas Inc. 1999, 2011. All Rights Reserved Intersil (and design) is a registered trademark of Intersil Americas Inc. All other trademarks mentioned are the property of their respective owners. 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 All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certification. 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 4