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  ON Semiconductor Electronic Components Datasheet  

MC33065 Datasheet

High Performance Dual Channel Current Mode Controller

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MC34065, MC33065
High Performance
Dual Channel Current
Mode Controller
The MC34065 is a high performance, fixed frequency, dual current
mode controllers. It is specifically designed for offline and dctodc
converter applications offering the designer a cost effective solution
with minimal external components. This integrated circuit feature a
unique oscillator for precise duty cycle limit and frequency control, a
temperature compensated reference, two high gain error amplifiers,
two current sensing comparators, Drive Output 2 Enable pin, and two
high current totem pole outputs ideally suited for driving power
MOSFETs.
Also included are protective features consisting of input and
reference undervoltage lockouts each with hysteresis, cyclebycycle
current limiting, and a latch for single pulse metering of each output.
The MC34065 and MC33065 are available in dualinline and
surface mount packages.
Unique Oscillator for Precise Duty Cycle Limit and Frequency
Control
Current Mode Operation to 500 kHz
Automatic Feed Forward Compensation
Separate Latching PWMs for CycleByCycle Current Limiting
Internally Trimmed Reference with Undervoltage Lockout
Drive Output 2 Enable Pin
Two High Current Totem Pole Outputs
Input Undervoltage Lockout with Hysteresis
Low Startup and Operating Current
VCC 16
Vref
15
R
5.0 V
Reference
VCC
Undervoltage
Lockout
1
Sync Input
3
RT
CT
2
Voltage
Feedback 1 4
Compensation 1
5
R Vref
Undervoltage
Lockout
Oscillator
+
Error
Amp 1
Latching
PWM 1
Drive
7 Output 1
Current
6 Sense 1
Drive Output 2
Enable 14
Voltage
Feedback 2 13
Compensation 2
12
+
Error
Amp 2
Gnd 8
Latching
PWM 2
Drive Gnd 9
Drive
10 Output 2
Current
1 Sense 2
1
This device contains 208 active transistors.
Figure 1. Representative Block Diagram
© Semiconductor Components Industries, LLC, 2006
July, 2006 Rev. 3
1
http://onsemi.com
16
1
16
1
PDIP16
P SUFFIX
CASE 648
SO16W
DW SUFFIX
CASE 751G
PIN CONNECTIONS
Sync Input 1
CT 2
RT 3
Voltage Feedback 1 4
Compensation 1 5
Current Sense 1 6
Drive Output 1 7
Gnd 8
16 VCC
15 Vref
14
Drive Output 2
Enable
13 Voltage Feedback 2
12 Compensation 2
11 Current Sense 2
10 Drive Output 2
9 Drive Gnd
(Top View)
ORDERING INFORMATION
Device
Package
Shipping
MC34065DWL
SO16W 47 Units/Rail
MC34065PL
PDIP16 25 Units/Rail
MC33065DWL
SO16W 47 Units/Rail
MC33065DWH SO16W 47 Units/Rail
MC33065DWHR2 SO16W 1000 Tape & Reel
MC33065PH
PDIP16 25 Units/Rail
MC33065PL
PDIP16 25 Units/Rail
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 16 of this data sheet.
Publication Order Number:
MC34065/D


  ON Semiconductor Electronic Components Datasheet  

MC33065 Datasheet

High Performance Dual Channel Current Mode Controller

No Preview Available !

MC34065, MC33065
MAXIMUM RATINGS (Note 1)
Rating
Total Power Supply and Zener Current
Output Current, Source or Sink (Note 2)
Output Energy (Capacitive Load per Cycle)
Current Sense, Enable, and Voltage Feedback Inputs
Sync Input
High State (Voltage)
Low State (Reverse Current)
Error Amp Output Sink Current
Power Dissipation and Thermal Characteristics
DW Suffix, Plastic Package Case 751G
Maximum Power Dissipation @ TA = 25°C
Thermal Resistance, JunctiontoAir
P Suffix, Plastic Package Case 648
Maximum Power Dissipation @ TA = 25°C
Thermal Resistance, JunctiontoAir
Operating Junction Temperature
Operating Ambient Temperature
MC34065
MC33065
Storage Temperature Range
Symbol
(ICC + IZ)
IO
W
Vin
VIH
IIL
IO
Value
50
1.0
5.0
0.3 to +5.5
Unit
mA
A
μJ
V
5.5 V
5.0 mA
10 mA
PD
RθJA
PD
RθJA
TJ
TA
Tstg
862
145
1.25
100
+150
0 to +70
40 to +85
65 to +150
mW
°C/W
W
°C/W
°C
°C
°C
ELECTRICAL CHARACTERISTICS (VCC = 15 V [Note 3], RT = 8.2 kΩ, CT = 3.3 nF, for typical values TA = 25°C, for min/max
values TA is the operating ambient temperature range that applies [Note 4].)
Characteristics
Symbol
Min Typ Max Unit
REFERENCE SECTION
Reference Output Voltage (IO = 1.0 mA, TJ = 25°C)
Line Regulation (VCC = 11 V to 15 V)
Load Regulation (IO = 1.0 mA to 10 mA)
Total Output Variation over Line, Load, and Temperature
Output Short Circuit Current
Vref
Regline
Regload
Vref
ISC
4.9 5.0 5.1
2.0 20
3.0 25
4.85 5.15
30 100
OSCILLATOR AND PWM SECTIONS
Total Frequency Variation over Line and Temperature
VCC = 11 V to 15 V, TA = Tlow to Thigh
MC34065
MC33065
fosc
46.5 49 51.5
45 49 53
Frequency Change with Voltage (VCC = 11 V to 15 V)
Δfosc/ΔV 0.2 1.0
Duty Cycle at each Output
Maximum
Minimum
DCmax
DCmin
46 49.5 52
−−0
Sync Input Current
High State (Vin = 2.4 V)
Low State (Vin = 0.8 V)
IIH 170 250
IIL 80 160
1. This device series contains ESD protection and exceeds the following tests:
Human Body Model ???? V per MILSTD883, Method 3015.
Machine Model Method ??? V.
2. Maximum package power dissipation limits must be observed.
3. Adjust VCC above the startup threshold before setting to 15 V.
4. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible:
Tlow = 0°C for the MC34065
Tlow = 40°C for the MC33065
Thigh = +70°C for MC34065
Thigh = +85°C for MC33065
V
mV
mV
V
mA
kHz
%
%
μA
http://onsemi.com
2


Part Number MC33065
Description High Performance Dual Channel Current Mode Controller
Maker ON Semiconductor
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MC33065 Datasheet PDF





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