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CS8240
CS8240
500mA High Side (PNP) Driver with On-Chip Flyback Diode
Description
The CS8240 is a fast, PNP high side driver capable of delivering up to 500mA into a resistive or inductive load in harsh automotive or industrial environments. An internal flyback diode clamp is incorporated for inductive loads. The input (VIN) is TTL and CMOS compatible and has hysteresis to minimize the effects of noise. When the input is high, the output is on. When the input is low, the output is off and the supply voltage quiescent current is very low (<1.0A, typ). For device protection, the CS8240 incorporates thermal shutdown, short circuit current limiting, over voltage shutdown, and reverse battery protection. The CS8240 can withstand supply voltage transients of 60V (min) and -50V. The CS8240 is available in an overmolded 5 lead TO-220 package and is a competitive replacement for the LM-1921, LM-1951, LM-1952, MC-3399, and L-9350.
Features
s Low Output Saturation Voltage 0.22V at IOUT = 125mA 0.33V at IOUT = 225mA s Overmolded Package s On-Chip Flyback Diode s Fault Protection Over voltage Shutdown (32V, typ) Thermal Shutdown (165C, typ) Short Circuit Limiting (1.1A typ) -50V Reverse Transient Protection 60V Load Dump Protection Reverse Battery s Low Quiescent Current (Off State) s ESD Protected
Absolute Maximum Ratings Supply Voltage.....................................................................................6V to +26V Overvoltage Protection ....................................................................................60V Reverse Voltage ........................................................................................-16V DC .........................................................................................-50V Transient Internal Power Dissipation .....................................................Internally limited Logic Input Voltage ..........................................................................-0.3V to 7.0V Junction Temperature Range.....................................................-40C to +150C Storage Temperature Range ......................................................-55C to +165C Lead Temperature Soldering Wave Solder(through hole styles only).............10 sec. max, 260C peak Electrostatic Discharge (Human Body Model) ............................................2kV Block Diagram
Package Options
5 Lead TO-220 Overmolded
VCC
Current Limit Overvoltage Shutdown
Control Circuit
OUT
VIN
Thermal Shutdown
1 2 3 4 5
1
VCC OUT NC Gnd VIN
Gnd
Cherry Semiconductor Corporation 2000 South County Trail, East Greenwich, RI 02818 Tel: (401)885-3600 Fax: (401)885-5786 Email: info@cherry-semi.com Web Site: www.cherry-semi.com
Rev. 1/27/98
1
A
Company
CS8240
Electrical Characteristics: -40C TA 125C, -40C TJ 150C, unless otherwise noted.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
s General Characteristics Operating Supply Voltage Quiescent Current
6.0 VCC = 12V, VIN VIN(LOW) VIN VIN(HI), RLOAD = 501/2, 6 VCC 20V 20V VCC 24V 1 16 25 100 30 50
V A mA mA
s Output Stage Output Saturation Voltage
VIN VIN(HI), VCC = 6.0V, ILOAD = 125mA VCC = 14V, ILOAD = 225mA Input VIN(L), VCC = 12V, VOUT = 0V ICLAMP = 100mA, VCC = 12V VCC = 12V, ILOAD = 150mA VCC = 12V, ILOAD = 150mA
Output Leakage Current Negative Output Clamp Turn On Delay Time Turn Off Delay Time s Input Stage Input Voltage Input Current
-18
0.22 0.33 1 -15.5 5 5
0.5 0.7 150 -12 20 20
V V A V us us
Logic = High, VCC = 12V Turn ON Logic = Low, VCC = 12V Turn OFF VIN = 5.5V VIN = 0.8V
0.8
1.45 1.2 100 15
2.0 200 50
V V A A
s Protection Circuitry Overvoltage Shutdown
VIN VIN(HI) Output Short Circuit Current VIN VIN(HI), VCC = 12V, VOUT = 0V Thermal Shutdown
26 0.55 150
32 1.1 165
2.5
V A C
Package Lead Description
PACKAGE LEAD # LEAD SYMBOL FUNCTION
5 Lead TO-220 1 2 3 4 5 VCC OUT NC Gnd VIN Supply voltage to IC. Supplies load current through output PNP. Collector of output PNP, current to load is sourced from this lead. No connection. Ground. Input voltage to control output. Logic high turns output on. Logic low turns output off.
2
CS8240
Typical Performance Characteristics
Quiescent Current vs. IOUT
40 +125C 35 30
1.20 1.10 1.00
Output Saturation Voltage vs. IOUT
VCC = 12V VIN 2.0V
+25C
0.90 0.80
VCC = 12V VIN 2.0V
+125C
IQ (mA)
VSAT (V)
25 20 15 10 5 0 0 100 200 300 400 500
-40C
0.70 0.60 0.50 0.40 0.30 0.20 0.10 0
+25C -40C
600
0
100
200
300
400
500
600
IOUT (mA)
IOUT (mA)
Turn-on Delay Time
Flyback Clamp Characteristics
5V
5V
VIN
Load = 80W, 50mH
VIN
0V 12V
0V 12V 0V
VOUT
VOUT
0V
-15V
0
1
2
3
4
5
6
7
8
0
1
2
3
4
5
6
7
8
9
10
(ms)
(ms)
Turn Off Delay Time
60
5V
IIN vs. VIN
50
VIN
ON
Input Current (mA)
0V
40 30 20 10 0 OFF
12V
VOUT
-15V 0 2 4 6 8 10 12 14 16 18 20
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
(ms)
Input Voltage (V)
3
CS8240
Circuit Description Input Stage
The input stage is a self biased band gap based circuit with a positive going trip point of 1.45V (typ) and a negative going trip point of 1.20V (typ) (250mV of hysteresis). When the input voltage is below the positive trip point, the quiescent current of the supply voltage line is less than 1A, (typ). When the input voltage exceeds the positive trip point (1.45V, typ), the input stage Owakes upO the rest of the CS8240 circuitry and turns on the output stage. put current. The base drive of the PNP is the dominant component of the quiescent current of the CS8240 and is dependent on the level of output current. Short circuit protection (1.1A, typ) is also incorporated in the output stage.
Protection Circuitry
In addition to the short circuit protection mentioned above, the CS8240 also incorporates a thermal shutdown circuit (165C, typ) and a high voltage shutdown circuit (33V, typ), both of which cut off the drive to the PNP output transistor when excessive current is drawn. Inherent in the design of the CS8240 is transient protection to +60V and -50V on the supply line. The CS8240 is ESD protected in excess of 2kV (Human Body Model).
Output Stage
The output stage is built around a high current PNP output transistor. A control amplifier monitors the saturation voltage of the output PNP and maintains a balance of low saturation voltage and minimum base drive to the PNP for the given out-
Typical Application Circuits Solenoid Driver
VCC* 0.1mF CS8240
5V 0V
1 2
5 3
Lamp Driver
VCC 0.1mF CS8240 GE194 5 3 1 2
VCC = 6.0V to 26.0V
Controlled High Side Switch
VBAT VIGNITION CS8240 LOAD 15kW
4
CS8240
Package Specification
PACKAGE DIMENSIONS IN mm (INCHES) PACKAGE THERMAL DATA
Thermal Data RQJC typ RQJA typ
5 Lead TO-220 (Overmolded) 4.0 uC/W 50 uC/W
5 Lead Overmolded TO-220 (TFVA) Vertical
10.3 (.405) 10.0 (.395) .761 (.030) .508 (.020) 3.30 (.130) 2.89 (.114) 15.6 (.614) 15.3 (.604) 3.17 (.125) 2.92 (.115) 7.18 (.283) 6.94 (.273) 2.79 (.110) 2.54 (.100)
3.30 (.130) DIA 3.05 (.120)
4.70 (.185) 4.44 (.175)
3.10 (.122) 10.4 (.409) Note: Leads maintain a right angle with respect to the package body to within .015. 5.89 (.232) 4.01 (.158) 8.05 (.317)
3.18 (.125) 2.92 (.115)
.94 (.037) .69 (.027) 1.70 (.067) 6.80 (.268) 1.68 (.066) TYP
.56 (.022) .36 (.014)
Ordering Information
Part Number CS8240YTFVA5
Rev. 1/27/98
Description 5 Lead Overmolded TO-220 Vertical 5
Cherry Semiconductor Corporation reserves the right to make changes to the specifications without notice. Please contact Cherry Semiconductor Corporation for the latest available information.
(c) 1999 Cherry Semiconductor Corporation

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