cp494 Ceramate Technical Co., Ltd., cp494 Datasheet - Page 3

• Manufacturer Part Number: cp494
• Description: Switchmode Pulse Width Modulation Control Circuit
• Manufacturer: Ceramate Technical Co., Ltd.

* 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:[phone]
Fax:[phone]
ELECTRICAL CHARACTERISTICS
For typical values T
ERROR AMPLIFIER SECTION
PWM COMPARATOR SECTION (Test Circuit Figure 11)
DEADTIME CONTROL SECTION (Test Circuit Figure 11)
OSCILLATOR SECTION
UNDERVOLTAGE LOCKOUT SECTION
TOTAL DEVICE
* Standard deviation is a measure of the statistical distribution about the mean as derived from the formula, s
Input Offset Voltage (V
Input Offset Current (V
Input Bias Current (V
Input Common Mode Voltage Range (V
Open Loop Voltage Gain (DV
Unity–Gain Crossover Frequency (V
Phase Margin at Unity–Gain (V
Common Mode Rejection Ratio (V
Power Supply Rejection Ratio (DV
Output Sink Current (V
Output Source Current (V
Input Threshold Voltage (Zero Duty Cycle)
Input Sink Current (V
Input Bias Current (Pin 4) (V
Maximum Duty Cycle, Each Output, Push–Pull Mode
Input Threshold Voltage (Pin 4)
Frequency (C
Standard Deviation of Frequency* (C
Frequency Change with Voltage (V
Frequency Change with Temperature (DT
Turn–On Threshold (V
Standby Supply Current (Pin 6 at V
Average Supply Current
(V
(V
(Zero Duty Cycle)
(Maximum Duty Cycle)
(C
(V
(V
(C
(V
Pin 4
Pin 4
T
CC
CC
CC
T
SWITCHMODE Pulse Width Modulation Control Circuit
= 0.01 mF, R
= 0.01 mF, R
= 15 V)
= 40 V)
= 15 V) (See Figure 12)
= 0 V, C
= 0 V, C
T
= 0.001 mF, R
T
T
A
T
T
= 0.01 mF, R
= 0.001 mF, R
= 25 C, for min/max values T
= 12 kW)
= 12 kW, V
O (Pin 3)
(Pin 3)
CC
O (Pin 3)
O (Pin 3)
O (Pin 3)
O (Pin 3)
increasing, I
= 0.7 V)
Characteristics
Pin 4
T
= 2.5 V)
O
= 30 kW)
= 2.5 V)
= 2.5 V)
= 0.7 V)
O
(Pin 4)
= 3.0 V, V
T
T
= 12 kW)
= 0.5 V to 3.5 V, R
= 0 V to 5.25 V)
= 3.5 V)
CC
= 30 kW)
CC
CC
ref
O
T
= 2.0 V)
, All other inputs and outputs open)
= 40 V)
= 33 V, V
ref
= 7.0 V to 40 V, T
= 0.5 V to 3.5 V, R
= 0.001 mF, R
CC
(V
= 1.0 mA)
O
A
CC
= 40 V, T
= 0.5 V to 3.5 V, R
= T
= 15 V, C
low
O
A
= 2.5 V, R
to T
is the operating ambient temperature range that applies, unless otherwise noted.
A
L
T
= 2.0 kW)
= 25 C)
= 30 kW)
high
T
A
= 0.01 mF, R
L
= 25 C)
)
= 2.0 kW)
Page 3 of 11
L
= 2.0 kW)
L
= 2.0 kW)
T
= 12 kW, unless otherwise noted.)
Df
Df
Symbol
CMRR
I
DC
PSRR
osc
osc
IB (DT)
A
V
sf
V
V
f
I
I
I
f
f
V
V
I
I
VOL
O
I
osc
O–
CC
ICR
C–
IO
IB
TH
I–
osc
IO
max
m
th
th
+
(DV)
(DT)
Email: [e-mail]
Http: www.ceramate.com.tw
Min
0.3
2.0
0.3
5.5
70
65
45
–
–
–
–
–
–
–
–
–
–
0
–
–
–
–
–
–
–
–0.3 to V
–0.1
–4.0
–2.0
6.43
Typ
350
100
2.0
5.0
0.7
2.5
0.7
2.8
3.0
0.1
5.5
7.0
7.0
95
65
90
48
45
40
–
–
CC
Rev 1.0 Apr.19,2004
–2.0
CP494
N
S (X
n = 1
N – 1
Max
–1.0
250
–10
4.5
3.3
7.0
n
10
50
50
12
10
15
–
–
–
–
–
–
–
–
–
–
–
–
–
– X)
2
Unit
deg.
kHz
kHz
mV
mA
mA
mA
mA
mA
nA
mA
dB
dB
dB
mA
%
%
%
%
V
V
V
V