MC44608P100 ON Semiconductor, MC44608P100 Datasheet - Page 9

• Manufacturer Part Number: MC44608P100
• Description: IC PWM FLYBCK ISO VM 8DIP
• Manufacturer: ON Semiconductor

Specifications of MC44608P100

• Pwm Type: Voltage Mode
• Number Of Outputs: 1
• Frequency - Max: 110kHz
• Duty Cycle: 86%
• Voltage - Supply: 6.6 V ~ 13 V
• Buck: No
• Boost: No
• Flyback: Yes
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: Yes
• Operating Temperature: -25°C ~ 85°C
• Package / Case: 8-DIP (0.300", 7.62mm)
• Frequency-max: 110kHz
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: MC44608P100OS

EQUATION 1
where: I
C
EQUATION 2
where: I
I
EQUATION 3
where: I
I
EQUATION 4
EQUATION 5
EQUATION 6
where: k
k
G
pin3
S/L
Vcc
Start−up Phase Duration:
Switching Phase Duration:
Latched−off Phase Duration:
Burst Mode Duty Cycle:
is the current consumed by the Power Switch
= (UVLO1 − UVLO2)/(V
is the current drawn from pin3 adding a resistor
is the V
t start–up +
t
t
d
d
d
switch
latched*off
BM
BM
BM
stup
ccS
ccL
S/Stup
+
+
+
is the latched off phase consumption
is the no load circuit consumption in switching phase
is the start−up current flowing through V
CC
+
t start*up ) t
C
1 )
= (V
Vcc
capacitor value
C
Vcc
C
stup
+
Vcc
k
(V
S Stup
C
− UVLO2)/(V
stup
Vcc
I
I
stup
(V stup * UVLO1)
ccS
(V stup * UVLO2)
switch
stup
* UVLO2)
t
I stup
switch
) I
I
(UVLO1 * UVLO2)
ccL
− UVLO1)
I
G
ccS
I
) I
) t
stup
stup
) I
latched*off
pin3
− UVLO1)
)
G
1
C
C
Vcc
)
Vcc
k
I
S L
(V
I
ccS
(V
CC
ccS
http://onsemi.com
stup
stup
) I
pin
) I
MC44608
*UVLO1)
I
*UVLO1)
G
ccL
I
G
ccS
9
) I
) I
pin3
G
)
C
Vcc
I
(UVLO1*UVLO2)
ccL
) I
pin3