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Motorola Electronic Components Datasheet

MC33065-L Datasheet

High Performance Dual Channel Current Mode Controllers

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Order this document by MC34065–H/D
MC34065-H, L
High Performance
MC33065-H, L
Dual Channel Current
Mode Controllers
The MC34065–H,L series are high performance, fixed frequency, dual
current mode controllers. They are specifically designed for off–line and
dc–to–dc converter applications offering the designer a cost effective
solution with minimal external components. These integrated circuits 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, cycle–by–cycle current limiting,
and a latch for single pulse metering of each output. These devices are
available in dual–in–line and surface mount packages.
The MC34065–H has UVLO thresholds of 14 V (on) and 10 V (off), ideally
suited for off–line converters. The MC34065–L is tailored for lower voltage
applications having UVLO thresholds of 8.4 V (on) and 7.8 V (off).
Unique Oscillator for Precise Duty Cycle Limit and Frequency Control
Current Mode Operation to 500 kHz
Automatic Feed Forward Compensation
Separate Latching PWMs for Cycle–By–Cycle 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
Vref
15
1
Sync Input
3
RT
CT
2
Voltage
Feedback 1
4
Compensation 1
5
Drive Output
2
Enable
14
Voltage
Feedback 2 13
Compensation 2
12
Representative Block Diagram
VCC 16
5.0V VCC
Reference
Undervoltage
R Lockout
R
Vref
Undervoltage
Lockout
Oscillator
+
Error
Amp 1
Latching
PWM 1
Drive Output 1
7
Current Sense 1
6
+
Error
Amp 2
Gnd 8
Latching
PWM 2
Drive Gnd 9
Drive Output 2
10
Current Sense 2
11
HIGH PERFORMANCE
DUAL CHANNEL CURRENT
MODE CONTROLLERS
SEMICONDUCTOR
TECHNICAL DATA
P SUFFIX
PLASTIC PACKAGE
CASE 648
DW SUFFIX
PLASTIC PACKAGE
CASE 751G
(SO–16L)
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
Operating
Temperature Range Package
MC34065DW–H
MC34065DW–L
MC34065P–H
TA = 0° to +70°C
SO–16L
Plastic DIP
MC34065P–L
MC33065DW–H
MC33065DW–L
MC33065P–H
MC33065P–L
TA = –40° to +85°C
SO–16L
Plastic DIP
MOTOROLA ANALOG IC DEVICE DATA
© Motorola, Inc. 1996
Rev 0
1


Motorola Electronic Components Datasheet

MC33065-L Datasheet

High Performance Dual Channel Current Mode Controllers

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MC34065–H, L MC33065–H, L
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Power Supply Voltage
Output Current, Source or Sink (Note 1)
Output Energy (Capacitive Load per Cycle)
VCC
IO
W
20
400
5.0
V
mA
µJ
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, Junction–to–Air
Vin
VIH
IIL
IO
PD
RθJA
– 0.3 to +5.5
+5.5
– 5.0
10
862
145
V
V
mA
mA
mW
°C/W
P Suffix, Plastic Package Case 648
Maximum Power Dissipation @ TA = 25°C
Thermal Resistance, Junction–to–Air
Operating Junction Temperature
Operating Ambient Temperature (Note 3)
MC34065
MC33065
Storage Temperature Range
PD
RθJA
TJ
TA
Tstg
1.25
100
+150
0 to +70
– 40 to +85
– 65 to +150
mW
°C/W
°C
°C
°C
ELECTRICAL CHARACTERISTICS (VCC = 15 V [Note 2], RT = 8.2 k, CT = 3.3 nF, for typical values TA = 25°C, for min/max values
TA is the operating ambient temperature range that applies to [Note 3].)
Characteristics
Symbol Min Typ Max Unit
REFERENCE SECTION
Reference Output Voltage (IO = 1.0 mA, TJ = 25°C)
Line Regulation (VCC = 11 V to 20 V)
Load Regulation (IO = 1.0 mA to 10 mA, VCC = 20 V)
Total Output Variation over Line, Load, and Temperature
Output Short Circuit Current
OSCILLATOR AND PWM SECTIONS
Total Frequency Variation over Line and Temperature
VCC = 11 V to 20 V, TA = Tlow to Thigh
MC34065
MC33065
Frequency Change with Voltage (VCC = 11 V to 20 V)
Duty Cycle at each Output
Maximum
Minimum
Sync Input Current
High State (Vin = 2.4 V)
Low State (Vin = 0.8 V)
ERROR AMPLIFIERS
Voltage Feedback Input (VO = 2.5 V)
Input Bias Current (VFB = 5.0 V)
Open Loop Voltage Gain (VO = 2.0 V to 4.0 V)
Unity Gain Bandwidth (TJ = 25°C)
Power Supply Rejection Ratio (VCC = 11 V to 20 V)
Output Current
Source (VO = 3.0 V, VFB = 2.3 V)
Sink (VO = 1.2 V, VFB = 2.7 V)
Output Voltage Swing
High State (RL = 15 k to ground, VFB = 2.3 V)
Low State (RL = 15 k to Vref, VFB = 2.7 V)
Vref
4.85 5.0 5.13
V
Regline
2.0 20 mV
Regload
3.0 25 mV
Vref 4.8 – 5.15 V
ISC 30 100 – mA
fosc kHz
46.5 49 51.5
45 49 53
fosc/V
0.2 1.0
DCmax 46 49.5 52
DCmin
0
IIH – 170 250
IIL – 80 160
%
%
µA
VFB
IIB
AVOL
BW
PSRR
Isource
Isink
VOH
VOL
2.45 2.5 2.55
V
– 0.1 – 1.0
µA
65 100
dB
0.7 1.0
– MHz
60 90 – dB
mA
0.45 1.0
2.0 12
5.0 6.2
– 0.8 1.1
V
2 MOTOROLA ANALOG IC DEVICE DATA


Part Number MC33065-L
Description High Performance Dual Channel Current Mode Controllers
Maker Motorola
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MC33065-L Datasheet PDF





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