MC44604 View Datasheet(PDF) - ON Semiconductor
Part Name
Description
Manufacturer
MC44604 Datasheet PDF : 22 Pages
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MC44604
ELECTRICAL CHARACTERISTICS (VCC and VC = 12 V [Note 6], Rref = 10 kW, CT = 820 pF, for typical values TA = 25°C,
for min/max values TA = −25° to +85°C [Note 7], unless otherwise noted.)
Characteristic
Pin #
Symbol
Min
Typ
Max
ERROR AMPLIFIER SECTION (continued)
Output Current
Sink (VE/A out = 1.5 V, VFB = 2.7 V)
TA = −25° to +85°C
Source (VE/A out = 5.0 V, VFB = 2.3 V)
TA = −25° to +85°C
13
ISink
2.0
12
−
ISource
−2.0
−
−0.2
Output Voltage Swing
High State (IE/A out (source) = 0.5 mA, VFB = 2.3 V)
Low State (IE/A out (sink) = 0.33 mA, VFB = 2.7 V)
REFERENCE SECTION
13
VOH
5.5
6.5
7.5
VOL
−
1.0
1.1
Reference Output Voltage (VCC = 10 V to 15 V)
16
Reference Current Range (Iref = Vref/Rref, R = 5.0 k to 25 kW)
16
Reference Voltage Over Iref Range
OSCILLATOR SECTION
Vref
Iref
DVref
2.4
2.5
2.6
−500
−
−100
−40
−
40
Frequency
TA = 0° to +70°C
TA = −25° to +85°C
Frequency Change with Voltage (VCC = 10 V to 15 V)
Frequency Change with Temperature (TA = −25° to +85°C)
Oscillator Voltage Swing (Peak−to−Peak)
10
Ratio Charge Current/Reference Current (TA = −25° to +85°C)
Fixed Maximum Duty Cycle = Idischarge/(Idischarge + Icharge)
UNDERVOLTAGE LOCKOUT SECTION
FOSC
DFOSC/DV
DFOSC/DT
VOSC(P−P)
Icharge/Iref
D
40.5
40
−
−
−
0.35
78
46
−
0.05
0.05
2.0
−
80
48.5
49
−
−
−
0.43
82
Startup Threshold
Disable Voltage After Threshold Turn−On
TA = 0° to +70°C
TA = −25° to +85°C
Disable Voltage After Threshold Turn−On
Delta VCC During Standby (Vstup−th −Vdisable2)
(TA = −25°C to 85°C)
1
Vstup−th
13.6
14.5
15.4
1
Vdisable1
8.6
9.0
9.4
8.3
−
9.6
1
Vdisable2
7.0
7.5
8.0
1
Vstup−th
1.8
2.0
2.2
−Vdisable2
DEMAGNETIZATION DETECTION SECTION
Demagnetization Detect Input
Demagnetization Comparator Threshold (Vpin8 Decreasing)
Propagation Delay (Input to Output, Low to High)
Input Bias Current (Vdemag = 65 mV)
Negative Clamp Level (Idemag = −2.0 mA)
Positive Clamp Level (Idemag = +2.0 mA)
SOFT−START SECTION
8
Vdemag−th
50
65
80
−
−
0.25
−
Idemag−lb
−0.5
−
−
CL(neg)
−
−0.38
−
CL(pos)
−
0.72
−
Ratio Charge Current/Iref
TA = 0° to +70°C
TA = −25° to +85°C
Iss(ch)/Iref
0.37
0.4
0.43
0.36
−
0.44
Discharge Current (Vsoft−start = 1.0 V)
11
Idischarge
1.5
5.0
−
Clamp Level
Vss(CL)
2.2
2.4
2.6
Duty Cycle (Rsoft−start = 12 kW)
Duty Cycle (Vsoft−start (pin11) = 0.1 V)
Dsoft−start 12k
36
42
49
Dsoft−start
−
−
0
6. Adjust VCC above the startup threshold before setting to 12 V.
7. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
Unit
mA
V
V
mA
mV
kHz
%/V
%/°C
V
−
%
V
V
V
V
mV
ms
mA
V
V
−
mA
V
%
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