MC33232
http://onsemi.com
3
MAXIMUM RATINGS
Parameter Symbol Value Unit
Total Power Supply and Zener Current (I
CC
+ I
Z
) 30 mA
Output Current, Source or Sink (Note 1)
Peak Current (Under 0.5 msec)
DC (Continuously Current)
I
O
750
300
mA
Current Sense, Multiplier and Voltage Feedback Input V
in
−0.3 to 10 V
Zero Current Detect Input
High State Forward Current
Low State Reverse Current
I
in
50
−10
mA
Power Dissipation and Thermal Characteristic
D Suffix, Plastic Package, Case 751
Maximum Power Dissipation @ T
A
= 70°C
Thermal Resistance, Junction−to−Air
P Suffix, Plastic Package, Case 626
Maximum Power Dissipation @ T
A
= 70°C
Thermal Resistance, Junction−to−Air
P
D
R
q
JA
P
D
R
q
JA
450
178
800
100
mW
°C/W
mW
°C/W
Operating Junction Temperature T
J
+150 °C
Storage Temperature T
stg
−55 to +150 °C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. Maximum package power dissipation limits must be observed.
RECOMMENDED OPERATING CONDITION (V
CC
= 12 V and T
A
= 25°C unless otherwise noted)
Characteristic
Symbol Min Typ Max Unit
Operating Frequency (R
ZCD
= 4.7 kW, C
err
= 0.68 mF)
F MHz
Normal Loading 0.4
Under Loading 1.0
External Resistance for Zero Current Detect Control R
ZCD
− 4.7 −
kW
Operating Ambient Temperature T
A
−20 − +85 °C
ELECTRICAL CHARACTERISTICS (V
CC
= 12 V, for typical values T
A
= −20°C ~ +85°C, unless otherwise noted)
Characteristic
Symbol Min Typ Max Unit
ERROR AMPLIFIER
Voltage Feedback Input Threshold V
FB
V
T
A
= 25°C 2.465 2.5 2.535
T
A
= −20°C ~ +85°C (V
CC
= 12 V ~ 25 V) 2.44 − 2.54
Line Regulation (V
CC
= 12 V ~ 25 V, T
A
= 25°C) Reg
line
− 1.0 10 mV
Input Bias Current (V
FB
= 0 V) I
IB
− −0.1 −0.5
mA
Transconductance (T
A
= 25°C) gm 80 100 130
mmho
Output Current (V
CC
= 12 V ~ 28 V, T
A
= 25°C)
mA
Source (V
FB
= 2.3 V) I
source
− 10 −
Sink (V
FB
= 2.7 V) I
sink
− 10 −
Output Voltage Swing V
High State (V
FB
= 2.3 V) V
OH(ea)
5.8 6.2 −
Low State (V
FB
= 2.7 V) V
OL(ea)
− 1.7 2.4
OVERVOLTAGE COMPARATOR
Voltage Feedback Input Threshold V
TH
1.04 V
FB
1.067 V
FB
1.095 V
FB
V
OVERTEMPERATURE PROTECT CIRCUIT (This item is just reference value without any specifying)
Detect Temperature TSD 120 − − °C
