Cherry CS8240 500ma high side (pnp) driver with on-chip flyback diode Datasheet

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
Features
very low (<1.0µA, 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.
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.....................................................-40¡C to +150¡C
Storage Temperature Range ......................................................-55¡C to +165¡C
Lead Temperature Soldering
Wave Solder(through hole styles only).............10 sec. max, 260¡C peak
Electrostatic Discharge (Human Body Model) ............................................2kV
■ Low Output Saturation
Voltage
0.22V at IOUT = 125mA
0.33V at IOUT = 225mA
■ Overmolded Package
■ On-Chip Flyback Diode
■ Fault Protection
Over voltage
Shutdown (32V, typ)
Thermal Shutdown
(165¡C, typ)
Short Circuit Limiting
(1.1A typ)
-50V Reverse Transient
Protection
60V Load Dump
Protection
Reverse Battery
■ Low Quiescent Current
(Off State)
■ ESD Protected
Package Options
5 Lead TO-220
Overmolded
Block Diagram
VCC
Current
Limit
Overvoltage
Shutdown
Control
Circuit
1
2
3
4
5
OUT
VIN
VCC
OUT
NC
Gnd
VIN
1
Thermal
Shutdown
Gnd
Cherry Semiconductor Corporation
2000 South County Trail, East Greenwich, RI 02818
Tel: (401)885-3600 Fax: (401)885-5786
Email: [email protected]
Web Site: www.cherry-semi.com
Rev. 1/27/98
1
A
¨
Company
CS8240
Electrical Characteristics: -40¡C ² TA ² 125¡C, -40¡C ² TJ ² 150¡C, unless otherwise noted.
PARAMETER
■ General Characteristics
Operating Supply Voltage
Quiescent Current
■ Output Stage
Output Saturation Voltage
Output Leakage Current
Negative Output Clamp
Turn On Delay Time
Turn Off Delay Time
■ Input Stage
Input Voltage
TEST CONDITIONS
MIN
MAX
UNIT
1
100
V
µA
16
25
30
50
mA
mA
0.22
0.33
1
-15.5
5
5
0.5
0.7
150
-12
20
20
V
V
µA
V
us
us
1.45
1.2
100
15
2.0
200
50
V
V
µA
µA
6.0
VCC = 12V, VIN ² VIN(LOW)
VIN ³ VIN(HI), RLOAD = 50½,
6 ² VCC ² 20V
20V ² VCC ² 24V
VIN ² VIN(HI), VCC = 6.0V,
ILOAD = 125mA
VCC = 14V, ILOAD = 225mA
Input ² VIN(L), VCC = 12V, VOUT = 0V
ICLAMP = 100mA, VCC = 12V
VCC = 12V, ILOAD = 150mA
VCC = 12V, ILOAD = 150mA
Logic = High, VCC = 12V Turn ON
Logic = Low, VCC = 12V Turn OFF
VIN = 5.5V
VIN = 0.8V
Input Current
TYP
■ Protection Circuitry
Overvoltage Shutdown
VIN ³ VIN(HI)
Output Short Circuit Current VIN ³ VIN(HI), VCC = 12V, VOUT = 0V
Thermal Shutdown
-18
0.8
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
VCC
Supply voltage to IC. Supplies load current through
output PNP.
2
OUT
Collector of output PNP, current to load is sourced
from this lead.
3
NC
No connection.
4
Gnd
Ground.
5
VIN
Input voltage to control output. Logic high turns output on. Logic low turns output off.
2
CS8240
Typical Performance Characteristics
Quiescent Current vs. IOUT
Output Saturation Voltage vs. IOUT
40
1.20
+125°C
1.10
35
1.00
VCC = 12V
VIN ³ 2.0V
30
+25°C
0.80
-40°C
VSAT (V)
IQ (mA)
25
20
15
+125°C
VCC = 12V
VIN ³ 2.0V
0.90
0.70
+25°C
0.60
-40°C
0.50
0.40
10
0.30
0.20
5
0.10
0
0
0
100
200
300
400
500
0
600
100
200
300
400
500
600
IOUT (mA)
IOUT (mA)
Turn-on Delay Time
Flyback Clamp Characteristics
5V
Load = 80W, 50mH
5V
VIN
VIN
0V
0V
12V
12V
0V
VOUT
VOUT
-15V
0V
1
0
2
3
4
5
6
7
0
8
1
2
3
5
4
6
7
8
9
10
(ms)
(ms)
IIN vs. VIN
Turn Off Delay Time
60
5V
50
ON
Input Current (mA)
VIN
0V
12V
VOUT
40
30
OFF
20
10
-15V
0
0
2
4
6
8
10
12
14
16
18
0
20
(ms)
0.2
0.4
0.6
0.8
1.0
1.2
1.4
Input Voltage (V)
3
1.6
1.8
2.0
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 1µA, (typ). When the
input voltage exceeds the positive trip point (1.45V, typ), the
input stage Òwakes upÓ the rest of the CS8240 circuitry and
turns on the output stage.
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-
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
(165¡C, 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).
Typical Application Circuits
Solenoid Driver
VCC*
1
0.1mF
2
CS8240
5V
0V
5
3
Lamp Driver
VCC
1
0.1mF
2
CS8240
GE194
5
3
VCC = 6.0V to 26.0V
Controlled High Side Switch
VBAT
VIGNITION
CS8240
LOAD
15kW
4
CS8240
Package Specification
PACKAGE THERMAL DATA
PACKAGE DIMENSIONS IN mm (INCHES)
Thermal Data
RQJC
typ
RQJA
5 Lead TO-220 (Overmolded)
4.0
ûC/W
typ
50
ûC/W
5 Lead Overmolded TO-220 (TFVA) Vertical
10.3 (.405)
10.0 (.395)
.761 (.030)
.508 (.020)
3.30 (.130)
2.89 (.114)
2.79 (.110)
2.54 (.100)
3.17 (.125)
2.92 (.115)
7.18 (.283)
6.94 (.273)
15.6 (.614)
15.3 (.604)
3.30 (.130)
DIA
3.05 (.120)
4.70 (.185)
4.44 (.175)
3.18 (.125)
2.92 (.115)
3.10 (.122)
Note:
Leads maintain
a right angle
with respect to
the package
body to within
± .015².
10.4 (.409)
.94 (.037)
.69 (.027)
5.89 (.232)
4.01
(.158)
8.05 (.317)
.56 (.022)
.36 (.014)
1.70 (.067)
6.80 (.268)
1.68 (.066) TYP
Ordering Information
Part Number
CS8240YTFVA5
Rev. 1/27/98
Cherry Semiconductor Corporation reserves the
right to make changes to the specifications without
notice. Please contact Cherry Semiconductor
Corporation for the latest available information.
Description
5 Lead Overmolded TO-220
Vertical
5
© 1999 Cherry Semiconductor Corporation
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