MC33365 Datasheet, PDF (1/12 Pages) ON Semiconductor – HIGH VOLTAGE OFF-LINE SWITCHING REGULATOR

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–chip 700 V/1.0 A SenseFET power switch,
450 V active off–line 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–by–cycle current limiting, input undervoltage lockout
with hysteresis, bulk capacitor voltage sensing, and thermal shutdown. This
device is available in a 16–lead dual–in–line package.
• On–Chip 700 V, 1.0 A SenseFET Power Switch
• Rectified 240 Vac Line Source Operation
• On–Chip 450 V Active Off–Line Startup FET
• Latching PWM for Double Pulse Suppression
• Cycle–By–Cycle Current Limiting
• Input Undervoltage Lockout with Hysteresis
• Bulk Capacitor Voltage Comparator
• Trimmed Internal Bandgap Reference
• Internal Thermal Shutdown
Order this document by MC33365/D
MC33365
HIGH VOLTAGE
OFF–LINE
SWITCHING REGULATOR
SEMICONDUCTOR
TECHNICAL DATA
16
1
P SUFFIX
PLASTIC PACKAGE
CASE 648E
(DIP–16)
Simplified Application
AC Input
Startup Input 1
Regulator
Output
8
6
RT
CT ₇
Mirror
Osc
PWM
Thermal
Startup
Reg
UVLO
VCC
3
PWM Latch
S
Driver
Q
R
BOK
BOK ₁₁
16
Power Switch
Drain
Ipk
LEB
Compensation
9
EA
10
Gnd 4, 5, 12, 13
Voltage
Feedback
Input
DC Output
PIN CONNECTIONS
Startup Input 1
16
Power Switch
Drain
VCC ₃
4
Gnd
5
RT 6
CT 7
Regulator Output 8
13
Gnd
12
11 BOK
10
Voltage Feedback
Input
9 Compensation
(Top View)
ORDERING INFORMATION
Device
Operating
Temperature Range Package
MC33365P
TJ = –25° to +125°C DIP–16
MOTOROLA ANALOG IC DEVICE DATA
© Motorola, Inc. 1999
Rev 1
1