CP494
SWITCHMODE Pulse Width Modulation Control Circuit
RECOMMENDED OPERATING CONDITIONS
Characteristics
Symbol
Min
7.0
–
Typ
15
30
–
Max
40
Unit
V
Power Supply Voltage
V
CC
Collector Output Voltage
V
I
, V
40
V
C1
C2
Collector Output Current (Each transistor)
Amplified Input Voltage
Current Into Feedback Terminal
Reference Output Current
Timing Resistor
, I
C1 C2
–
200
mA
V
V
in
–0.3
–
–
V
– 2.0
CC
l
fb
–
0.3
10
mA
mA
kW
mF
kHz
l
–
–
ref
R
T
C
T
1.8
0.0047
1.0
30
0.001
40
500
10
Timing Capacitor
Oscillator Frequency
f
200
osc
ELECTRICAL CHARACTERISTICS (V = 15 V, C = 0.01 mF, R = 12 kW, unless otherwise noted.)
CC
T
T
For typical values T = 25°C, for min/max values T is the operating ambient temperature range that applies, unless otherwise noted.
A
A
Characteristics
Symbol
Min
Typ
Max
Unit
REFERENCE SECTION
Reference Voltage (I = 1.0 mA)
V
4.75
–
5.0
2.0
3.0
35
5.25
25
V
O
ref
Line Regulation (V = 7.0 V to 40 V)
Reg
mV
mV
mA
CC
line
Load Regulation (I = 1.0 mA to 10 mA)
Reg
–
15
O
load
Short Circuit Output Current (V = 0 V)
I
15
75
ref
SC
OUTPUT SECTION
Collector Off–State Current
I
–
–
2.0
–
100
mA
mA
V
C(off)
(V = 40 V, V = 40 V)
CC
CE
Emitter Off–State Current
= 40 V, V = 40 V, V = 0 V)
I
–100
E(off)
V
CC
C
E
Collector–Emitter Saturation Voltage (Note 2)
Common–Emitter (V = 0 V, I = 200 mA)
V
V
–
–
1.1
1.5
1.3
2.5
E
C
sat(C)
sat(E)
Emitter–Follower (V = 15 V, I = –200 mA)
C
E
Output Control Pin Current
Low State (V v 0.4 V)
I
–
–
10
0.2
–
3.5
mA
mA
OC
OCL
High State (V = V
)
I
OCH
OC
ref
Output Voltage Rise Time
t
r
ns
Common–Emitter (See Figure 12)
Emitter–Follower (See Figure 13)
–
–
100
100
200
200
Output Voltage Fall Time
t
f
ns
Common–Emitter (See Figure 12)
Emitter–Follower (See Figure 13)
–
–
25
40
100
100
2. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Tel:886-3-3214525
Email: server@ceramate.com.tw
Http: www.ceramate.com.tw
Rev 1.0 Apr.19,2004
Page 2 of 11
Fax:886-3-3521052
CERAMATE [ CERAMATE TECHNICAL ]
