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MC33365
High Voltage Switching
Regulator
The MC33365 is a monolithic high voltage switching regulator that is
specifically designed to operate from a rectified 240 Vac line source. This
integrated circuit features an on鈥揷hip 700 V/1.0 A SenseFET power switch,
450 V active off鈥搇ine startup FET, duty cycle controlled oscillator, current
limiting comparator with a programmable threshold and leading edge
blanking, latching pulse width modulator for double pulse suppression, high
gain error amplifier, and a trimmed internal bandgap reference. Protective
features include cycle鈥揵y鈥揷ycle current limiting, input undervoltage lockout
with hysteresis, bulk capacitor voltage sensing, and thermal shutdown. This
device is available in a 16鈥搇ead dual鈥搃n鈥搇ine package.
鈥?/div>
On鈥揅hip 700 V, 1.0 A SenseFET Power Switch
HIGH VOLTAGE
OFF鈥揕INE
SWITCHING REGULATOR
SEMICONDUCTOR
TECHNICAL DATA
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Rectified 240 Vac Line Source Operation
On鈥揅hip 450 V Active Off鈥揕ine Startup FET
Latching PWM for Double Pulse Suppression
Cycle鈥揃y鈥揅ycle Current Limiting
Input Undervoltage Lockout with Hysteresis
Bulk Capacitor Voltage Comparator
Trimmed Internal Bandgap Reference
Internal Thermal Shutdown
16
1
P SUFFIX
PLASTIC PACKAGE
CASE 648E
(DIP鈥?6)
Simplified Application
AC Input
Startup Input
Regulator
Output
8
6
RT
CT
Osc
7
PWM Latch
S
Q
PWM
R
Ipk
Thermal
LEB
Compensation
9
EA
10
Voltage
Feedback
Input
Driver
BOK
Startup
Reg
UVLO
BOK
11
16
Power Switch
Drain
VCC
3
DC Output
1
PIN CONNECTIONS
Startup Input
1
16
Power Switch
Drain
Mirror
VCC
Gnd
3
4
5
13
Gnd
12
11
10
9
(Top View)
BOK
Voltage Feedback
Input
Compensation
6
7
8
RT
CT
Regulator Output
ORDERING INFORMATION
Device
MC33365P
Operating
Temperature Range
TJ = 鈥?5擄 to +125擄C
Package
DIP鈥?6
Rev 1
Gnd
4, 5, 12, 13
漏
Motorola, Inc. 1999
MOTOROLA ANALOG IC DEVICE DATA
1
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