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MC34065P-L Datasheet

  • MC34065P-L

  • ON Semiconductor [High Performance Dual Channel Current Mod...

  • ONSEMI

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Order this document by MC34065鈥揌/D
MC34065-H, L
High Performance
Dual Channel Current
Mode Controllers
The MC34065鈥揌,L series are high performance, fixed frequency, dual
current mode controllers. They are specifically designed for off鈥搇ine and
dc鈥搕o鈥揹c 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鈥揵y鈥揷ycle current limiting,
and a latch for single pulse metering of each output. These devices are
available in dual鈥搃n鈥搇ine and surface mount packages.
The MC34065鈥揌 has UVLO thresholds of 14 V (on) and 10 V (off), ideally
suited for off鈥搇ine converters. The MC34065鈥揕 is tailored for lower voltage
applications having UVLO thresholds of 8.4 V (on) and 7.8 V (off).
鈥?/div>
Unique Oscillator for Precise Duty Cycle Limit and Frequency Control
MC33065-H, L
HIGH PERFORMANCE
DUAL CHANNEL CURRENT
MODE CONTROLLERS
SEMICONDUCTOR
TECHNICAL DATA
P SUFFIX
PLASTIC PACKAGE
CASE 648
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Current Mode Operation to 500 kHz
Automatic Feed Forward Compensation
Separate Latching PWMs for Cycle鈥揃y鈥揅ycle 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
DW SUFFIX
PLASTIC PACKAGE
CASE 751G
(SO鈥?6L)
PIN CONNECTIONS
Sync Input
CT
RT
1
2
3
4
5
6
7
8
(Top View)
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
Representative Block Diagram
VCC
5.0V
Reference
R
R
1
Sync Input
RT
CT
3
Oscillator
2
+
鈥?/div>
Error
Amp 1
Latching
PWM 1
7
Drive Output 1
Vref
Undervoltage
Lockout
VCC
Undervoltage
Lockout
16
Voltage Feedback 1
Compensation 1
Current Sense 1
Drive Output 1
Gnd
Vref
15
ORDERING INFORMATION
Device
MC34065DW鈥揌
MC34065DW鈥揕
Drive Output 2
Voltage
Feedback 1
Compensation 1
4
5
Current Sense 1
6
Operating
Temperature Range
Package
SO鈥?6L
Drive Output
2
Enable 14
Voltage
Feedback 2 13
Compensation 2
12
Gnd
8
Drive Gnd
+
鈥?/div>
Error
Amp 2
Latching
PWM 2
10
MC34065P鈥揌
MC34065P鈥揕
MC33065DW鈥揌
TA = 0擄 to +70擄C
Plastic DIP
SO鈥?6L
11
9
Current Sense 2
MC33065DW鈥揕
MC33065P鈥揌
MC33065P鈥揕
漏
Motorola, Inc. 1996
TA = 鈥?0擄 to +85擄C
Plastic DIP
Rev 0
MOTOROLA ANALOG IC DEVICE DATA
1

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