mc44608 ON Semiconductor, mc44608 Datasheet - Page 4

• Manufacturer Part Number: mc44608
• Description: Few External Components Reliable And Flexible Smps Controller
• Manufacturer: ON Semiconductor

2. Adjust V
3. This function can be inhibited by connecting pin 1 to GND.
4. Guaranteed by design (non tested).
ELECTRICAL CHARACTERISTICS
otherwise noted) (Note 2)
DEMAGNETIZATION DETECTION section (note 3)
OVERTEMPERATURE section
STANDBY MAXIMUM CURRENT REDUCTION section
K FACTORS SECTION FOR PULSED MODE OPERATION
SUPPLY SECTION
Demag Comparator Threshold (V
Demag Comparator Hysteresis (Note 4)
Propagation Delay (Input to Output, Low to High)
Input Bias Current (V
Negative Clamp Level (I
Positive Clamp Level @ I
Positive Clamp Level @ I
Trip Level Over Temperature
Hysteresis
Normal Mode Recovery Demag Pin Current Threshold
I
I
I
(V
(UVLO1 − UVLO2) / (V
I
Demag ratio I
(V3
V
Minimum Startup Voltage
V
Output Disabling V
Hysteresis (V
V
Hysteresis (V
Absolute Normal Condition V
Switching Phase Supply Current (no load)
Latched Off Phase Supply Current
Hiccup Mode Duty Cycle (no load)
CCS
CCS
CCL
CS
(V
temperature as close to ambient as possible.
control
CC
CC
stup
CC
/ V
1.0 mA
Startup Voltage
Undervoltage Lockout Voltage
/ I
/ I
/ I
− UVLO2) / (V
csth
= 9.0 V)
stup
stup
stup
Latchoff
CC
− V3
above the startup threshold before setting to 12 V. Low duty cycle pulse techniques are used during test to maintain junction
uvlo1
ovp
stup−th
0.5 mA
/ I
− V
CC
dem
− V
stup
demag
) / (1.0 mA − 0.5 mA)
uvlo2
Voltage After Turn On
stup
NM
uvlo1
demag
− UVLO1)
demag
demag
)
− UVLO1)
= 50 mV)
)
CC
Characteristic
= −1.0 mA)
= 125 mA
= 25 mA
Start Current @ (V
pin1
increasing)
(V
CC
= 12 V, for typical values T
i
= 100 V) and
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MC44608P40
MC44608P75
MC44608P40
MC44608P75
4
A
= 25°C, for min/max values T
V
V
10
V
10
H
cl−pos−dem−H
cl−pos−dem−L
H
t
PHL(In/Out)
10
cl−neg−dem
10
Symbol
I
uvlo1−uvlo2
I
V
10 x K1
10 x K1
V
stup−uvlo1
dem−NM
2
CC−latch
d
I
6
V
V
−(I
dem−lb
Dmgr
H
T
T
dmg−th
V
stup−th
I
Hiccup
2
3
x K
x Y
CCS
R3
V3
uvlo1
uvlo2
high
dmg
hyst
ilow
CC
x K
x K2
sstup
cstby
)
sl
−0.6
−0.9
2.05
12.5
Min
175
1.4
2.4
2.8
1.8
3.0
9.5
6.2
7.0
2.0
2.4
0.3
30
20
46
90
−
−
−
−
−
−
−
−
−
−
A
= −25°C to +85°C unless
1800
−0.7
13.1
Typ
300
160
120
198
2.3
1.7
2.9
3.3
2.2
4.7
4.8
3.1
6.6
3.4
9.5
2.6
3.2
0.5
50
30
30
25
52
10
10
−
−
Max
−0.4
13.8
10.5
12.8
0.68
150
225
2.8
1.9
3.8
4.2
2.6
5.5
7.0
3.6
4.0
69
30
63
50
−
−
−
−
−
−
−
−
−
−
Unit
mV
mV
mA
mA
mA
mA
°C
°C
mA
ns
%
V
V
V
W
V
V
V
V
V
V
V
−
−
−
−
−
−
−