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MC44602 Datasheet(PDF) 4 Page - ON Semiconductor

Part No. MC44602
Description  HIGH PERFORMANCE CURRENT MODE CONTROLLER
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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MC44602 Datasheet(HTML) 4 Page - ON Semiconductor

 
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MC44602
4
MOTOROLA ANALOG IC DEVICE DATA
ELECTRICAL CHARACTERISTICS (VCC and VC = 12 V [Note 2], RT = 10k, CT = 1.0 nF, for typical values TA = 25°C, for min/max
values TA = –25°C to +85°C [Note 3] unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
OUTPUT SECTION
Output Voltage (TA = 25°C)
Low State
(ISink = 100 mA)
Low State
(ISink = 1.0A)
Low State
(ISink = 1.5 A)
High State (ISource = 50 mA)
High State (ISource = 0.5 A)
High State (ISource = 0.75 A)
VOL
(VCC–VOH)
0.6
1.8
2.1
1.4
1.7
1.8
0.3
2.0
2.6
1.7
2.0
2.2
V
Output Voltage with UVLO Activated (VCC = 6.0 V, ISink = 1.0 mA)
VOL(UVLO)
0.1
1.1
V
Output Voltage Rise Time (CL = 1.0 nF, TJ = 25°C)
tr
50
150
ns
Output Voltage Fall Time (CL = 1.0 nF, TJ = 25°C)
tf
50
150
ns
PWM SECTION
Duty Cycle
Maximum
Minimum
DC(max)
DC(min)
46
48
50
0
%
TOTAL DEVICE
Power Supply Current
Startup (VCC = 5 V)
Operating (Note 2)
TJ = 25° C
TA = –25°C to +85° C
ICC
10
0.2
17
0.5
20
22
mA
Power Supply Zener Voltage (ICC = 25 mA)
VZ
18
20
23
V
OVERLOAD AND SHORT CIRCUIT PROTECTION
Foldback Amplifier Threshold (Figures 9,10)
∆VFB
(VFB–100) (VFB–200) (VFB–300)
mV
Load Detect Input
Valid Load Comparator Threshold (VPin 2 Increasing)
Demag Comparator Threshold (VPin 2 Decreasing)
Propagation Delay (Input to Sink or Source Output)
Input Resistance
Vth(VL)
Vth(Demag)
tPLH(in/out)
Rin
2.0
50
12
2.5
88
1.1
18
3.0
120
1.6
30
V
mV
µS
k
NOTES: 2. Adjust VCC above the startup threshold before setting to 12V.
3. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
Figure 1. Timing Resistor
versus Oscillator Frequency
0.8
2.0
5.0
8.0
20
50
80
1.0 M
500 k
200 k
100 k
50 k
20 k
10 k
fOSC, OSCILLATOR FREQUENCY (Hz)
CT=100 pF
CT=500 pF
Figure 2. Output Deadtime
versus Oscillator Frequency
1.0 M
100 k
10 k
fOSC, OSCILLATOR FREQUENCY (Hz)
50
1
2
3
4
5
55
60
65
70
75
6
30
10
3.0
1.0
20 k
50 k
200 k
500 k
Note: Output switches at
one–half the oscillator
frequency.
VCC = 12 V
TA = 25°C
CT=10 nF
CT=1.0 nF
CT=200 pF
CT=2.0 nF
VCC = 12 V
TA = 25°C
Note: Output switches at
one–half the oscillator frequency.
CT=5.0 nF
1. CT = 10 nF
2. CT = 5.0 nF
3. CT = 2.0 nF
4. CT = 1.0 nF
5. CT = 500 pF
6. CT = 100 pF


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