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  ON Semiconductor Electronic Components Datasheet  

MC33023 Datasheet

(MC33023 / MC34023) High Speed Single-Ended PWM Controller

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MC34023, MC33023
High Speed Single−Ended
PWM Controller
The MC34023 series are high speed, fixed frequency, single−ended
pulse width modulator controllers optimized for high frequency
operation. 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 an oscillator, a temperature compensated
reference, a wide bandwidth error amplifier, a high speed current
sensing comparator, and a high current totem pole output ideally
suited for driving a power MOSFET.
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.
The flexibility of this series allows it to be easily configured for
either current mode or voltage mode control.
Features
50 ns Propagation Delay to Output
High Current Totem Pole Output
Wide Bandwidth Error Amplifier
Fully−Latched Logic with Double Pulse Suppression
Latching PWM for Cycle−By−Cycle Current Limiting
Soft−Start Control with Latched Overcurrent Reset
Input Undervoltage Lockout with Hysteresis
www.DataSheet4U.com
Low Startup Current (500 mA Typ)
Internally Trimmed Reference with Undervoltage Lockout
90% Maximum Duty Cycle (Externally Adjustable)
Precision Trimmed Oscillator
Voltage or Current Mode Operation to 1.0 MHz
Functionally Similar to the UC3823
Pb−Free Packages are Available*
http://onsemi.com
16
1
16
1
PDIP−16
P SUFFIX
CASE 648
SOIC−16W
DW SUFFIX
CASE 751G
MARKING DIAGRAMS
16
16
MC34023P
AWLYYWWG
1
MC33023DW
AWLYYWWG
1
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = Pb−Free Package
PIN CONNECTIONS
16
Vref
4
Clock
5
RT
6
CT
7
Ramp
Error Amp 3
Output
Noninverting
Input
2
Inverting
Input
1
8
Soft−Start
Oscillator
5.1V
Reference
UVLO
Latching
Error PWM
Amp
Soft−Start
10 Ground
This device contains 176 active transistors.
Figure 1. Simplified Application
15
VCC
13
VC
14
Output
12
Power
Ground
11
Current
9
Limit Ref
Current
Limit/
Shutdown
Error Amp
Inverting Input
Error Amp
Noninverting Input
Error Amp Output
1
2
3
16 Vref
15 VCC
14 Output
Clock 4
RT 5
CT 6
Ramp 7
Soft−Start 8
13 VC
12 Power Ground
11 Current Limit
Reference
10 Ground
9 Current Limit/
Shutdown
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
*For additional information on our Pb−Free strategy
and soldering details, please download the
ON Semiconductor Soldering and Mounting
Techniques Reference Manual, SOLDERRM/D.
© Semiconductor Components Industries, LLC, 2005
October, 2005 − Rev. 6
1
Publication Order Number:
MC34023/D


  ON Semiconductor Electronic Components Datasheet  

MC33023 Datasheet

(MC33023 / MC34023) High Speed Single-Ended PWM Controller

No Preview Available !

MC34023, MC33023
ORDERING INFORMATION
Device
Package
Shipping
MC33023DW
SOIC−16W
47 Units / Rail
MC33023DWG
SOIC−16W
(Pb−Free)
47 Units / Rail
MC33023DWR2
SOIC−16W
1000 Units / Reel
MC33023DWR2G
SOIC−16W
(Pb−Free)
1000 Units / Reel
MC34023P
PDIP−16
25 Units / Rail
MC34023PG
PDIP−16
(Pb−Free)
25 Units / Rail
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Power Supply Voltage
Output Driver Supply Voltage
Output Current, Source or Sink (Note 1)
DC
Pulsed (0.5 ms)
VCC
30
VC 20
IO
0.5
2.0
V
V
A
Current Sense, Soft−Start, Ramp, and Error Amp Inputs
Error Amp Output and Soft−Start Sink Current
Clock and RT Output Current
Power Dissipation and Thermal Characteristics
SO−16L Package (Case 751G)
Maximum Power Dissipation @ TA = + 25°C
Thermal Resistance, Junction−to−Air
DIP Package (Case 648)
Maximum Power Dissipation @ TA = + 25°C
Thermal Resistance, Junction−to−Air
Operating Junction Temperature
Operating Ambient Temperature (Note 2)
MC34023
MC33023
Vin
IO
ICO
PD
RqJA
PD
RqJA
TJ
TA
−0.3 to +7.0
10
5.0
V
mA
mA
862
145
1.25
100
+150
0 to +70
−40 to +105
mW
°C/W
W
°C/W
°C
°C
Storage Temperature Range
Tstg −55 to +150 °C
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
http://onsemi.com
2


Part Number MC33023
Description (MC33023 / MC34023) High Speed Single-Ended PWM Controller
Maker ON Semiconductor
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MC33023 Datasheet PDF






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