CS8240
500 mA High Side
(PNP) Driver with
On-Chip Flyback Diode
The CS8240 is a fast, PNP high side driver capable of delivering up
to 500 mA into a resistive or inductive load in harsh automotive or
industrial environments. An internal flyback diode clamp is
incorporated for inductive loads. The input (V
IN
) 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 (< 1.0
µA,
typ).
For device protection, the CS8240 incorporates thermal shutdown,
short circuit current limiting, overvoltage shutdown, and reverse
battery protection. The CS8240 can withstand supply voltage
transients of 60 V (min) and –50 V.
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
•
Low Output Saturation Voltage
–
0.22 V at I
OUT
= 125 mA
–
0.33 V at I
OUT
= 225 mA
•
Overmolded Package
•
On–Chip Flyback Diode
•
Fault Protection
–
Over Voltage Shutdown (32 V, typ)
–
Thermal Shutdown (165°C, typ)
–
Short Circuit Limiting (1.1 A typ)
–
–50 V Reverse Transient Protection
–
60 V Load Dump Protection
–
Reverse Battery
•
Low Quiescent Current (Off State)
•
ESD Protected
V
CC
Current
Limit
Overvoltage
Shutdown
V
IN
Thermal
Shutdown
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TO–220
FIVE LEAD
TQ SUFFIX
CASE 314D
Pin 1. V
CC
2. OUT
3. NC
4. GND
5. V
IN
TO–220
FIVE LEAD
TQVA SUFFIX
CASE 314N
1
5
1
5
MARKING DIAGRAM
CS8240
AWLYWW
1
A
WL, L
YY, Y
WW, W
= Assembly Location
= Wafer Lot
= Year
= Work Week
Control
Circuit
OUT
ORDERING INFORMATION
Device
CS8240YTQ5
Package
TO–220
FIVE LEAD
STRAIGHT
TO–220
FIVE LEAD
VERTICAL
Shipping
50 Units/Rail
GND
CS8240YTQVA5
50 Units/Rail
Figure 1. Block Diagram
©
Semiconductor Components Industries, LLC, 2001
1
April, 2001 – Rev. 4
Publication Order Number:
CS8240/D
CS8240
MAXIMUM RATINGS*
Rating
Supply Voltage
Overvoltage Protection
Reverse Voltage:
Internal Power Dissipation
Logic Input Voltage
Junction Temperature Range, T
J
Storage Temperature Range, T
S
Lead Temperature Soldering:
Electrostatic Discharge (Human Body Model)
1. 10 second maximum.
*The maximum package power dissipation must be observed.
Wave Solder (through hole styles only) (Note 1)
DC
Transient
Value
6.0 to 26
60
–16
–50
Internally
limited
–0.3 to +7.0
–40 to150
–55 to +165
260 peak
2.0
Unit
V
V
V
V
–
V
°C
°C
°C
kV
ELECTRICAL CHARACTERISTICS
(–40°C
≤
T
A
≤
125°C; –40°C
≤
T
J
≤
150°C, unless otherwise specified.)
Characteristic
General Characteristics
Operating Supply Voltage
Quiescent Current
–
V
CC
= 12V, V
IN
≤
V
IN(LOW)
V
IN
≥⋅V
IN(HI)
, R
LOAD
= 50
Ω,
6.0 V
≤
V
CC
≤
20 V
20 V
≤
V
CC
≤
24 V
6.0
–
–
–
–
1.0
16
25
–
100
30
50
V
µA
mA
mA
Test Conditions
Min
Typ
Max
Unit
Output Stage
Output Saturation Voltage
Output Leakage Current
Negative Output Clamp
Turn On Delay Time
Turn Off Delay Time
Input Stage
Input Voltage
Input Current
Protection Circuitry
Overvoltage Shutdown
Output Short Circuit Current
Thermal Shutdown
V
IN
≥
V
IN(HI)
V
IN
≥
V
IN(HI)
, V
CC
= 12 V, V
OUT
= 0 V
–
26
0.55
150
32
1.1
165
–
2.5
–
V
A
°C
Logic = High, V
CC
= 12 V Turn ON
Logic = Low, V
CC
= 12 V Turn OFF
V
IN
= 5.5 V
V
IN
= 0.8 V
0.8
–
–
–
1.45
1.2
100
15
–
2.0
200
50
V
V
µA
µA
V
IN
≤
V
IN(HI)
, V
CC
= 6.0 V, I
LOAD
= 125 mA
V
CC
= 14 V, I
LOAD
= 225 mA
Input
≤
V
IN(L),
V
CC
= 12 V, V
OUT
= 0 V
I
CLAMP
= 100 mA, V
CC
= 12 V
V
CC
= 12 V, I
LOAD
= 150 mA
V
CC
= 12 V, I
LOAD
= 150 mA
–
–
–
–18
–
–
0.22
0.33
1.0
–15.5
5.0
5.0
0.5
0.7
150
–12
20
20
V
V
µA
V
µs
µs
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2
CS8240
PACKAGE PIN DESCRIPTION
PACKAGE PIN #
5 Lead TO–220
1
2
3
4
5
PIN SYMBOL
V
CC
OUT
NC
GND
V
IN
FUNCTION
Supply Voltage to the IC. Supplies load current through 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.
TYPICAL PERFORMANCE CHARACTERISTICS
40
35
30
25
I
Q
(mA)
–40°C
20
V
OUT
(V)
0
0
100
200
300
I
OUT
(mA)
400
500
600
0
1
2
3
4
(µs)
5
6
7
8
15
10
5
0
0
12
V
CC
= 12 V
V
IN
≥
2.0 V
+125°C
+25°C
5
V
IN
(V)
Figure 2. Quiescent Current vs. I
OUT
Figure 3. Turn–On Delay Time
1.2
5
V
IN
(V)
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
–40°C
V
CC
= 12 V
V
IN
≥
2.0 V
+125°C
+25°C
0
V
SAT
(V)
0
2
4
6
8
10
(µs)
12
14
16
18
20
12
V
OUT
(V)
–15
0
100
200
300
I
OUT
(mA)
400
500
600
Figure 4. Turn Off Delay Time
Figure 5. Output Saturation Voltage vs. I
OUT
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3
CS8240
60
5
V
IN
(V)
Input Current (µA)
Load = 80
Ω,
50 mH
0
12
V
OUT
(V)
0
50
40
30
OFF
20
10
0
ON
–15
0
1
2
3
4
5
(ms)
6
7
8
9
10
0
0.2
0.4
0.6
0.8 1.0 1.2 1.4
Input Voltage (V)
1.6
1.8
2.0
Figure 6. Flyback Clamp Characteristics
Figure 7. I
IN
vs. V
IN
CIRCUIT DESCRIPTION
Input Stage
The input stage is a self biased band gap based circuit with
a positive going trip point of 1.45 V (typ) and a negative
going trip point of 1.20 V (typ) (250 mV of hysteresis).
When the input voltage is below the positive trip point, the
quiescent current of the supply voltage line is less than
1.0
µA,
(typ). When the input voltage exceeds the positive
trip point (1.45 V, typ), the input stage “wakes up” the rest
of the CS8240 circuitry and turns on the output stage.
Output Stage
the given output 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 (1.1 A, typ) is also incorporated in
the output stage.
Protection Circuitry
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
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
(33 V, 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 +60 V and
–50 V on the supply line. The CS8240 is ESD protected in
excess of 2.0 kV (Human Body Model).
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4
CS8240
TYPICAL APPLICATION CIRCUITS
V
CC*
0.1
µF
1
2
CS8240
5.0 V
0V
5
3
Figure 8. Solenoid Driver
V
CC*
0.1
µF
1
2
CS8240
GE194
5
3
* V
CC
= 6.0 V TO 26 V
Figure 9. Lamp Driver
V
BATT
V
IGNITION
0.1
µF
CS8240
15 kΩ
LOAD
Figure 10. Controlled High Side Switch
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5
Embedded System
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