MC44608P40G ON Semiconductor, MC44608P40G Datasheet

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MC44608P40G

Manufacturer Part Number
MC44608P40G
Description
IC PWM FLYBCK ISO VM 8DIP
Manufacturer
ON Semiconductor
Datasheet

Specifications of MC44608P40G

Pwm Type
Voltage Mode
Number Of Outputs
1
Frequency - Max
44kHz
Duty Cycle
86%
Voltage - Supply
6.6 V ~ 13 V
Buck
No
Boost
No
Flyback
Yes
Inverting
No
Doubler
No
Divider
No
Cuk
No
Isolated
Yes
Operating Temperature
-25°C ~ 85°C
Package / Case
8-DIP (0.300", 7.62mm)
Frequency-max
44kHz
Topology
Flyback
Output Current
800 mA
Switching Frequency
44 KHz
Duty Cycle (max)
86 %
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 25 C
Fall Time
50 ns
Mounting Style
Through Hole
Rise Time
50 ns
Synchronous Pin
No
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
MC44608P40GOS

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MC44608P40G
Manufacturer:
ON/安森美
Quantity:
20 000
MC44608
Few External Components
Reliable and Flexible
SMPS Controller
designed for off- -line converters. This high voltage circuit that
integrates the startup current source and the oscillator capacitor,
requires few external components while offering a high flexibility and
reliability.
consisting of an effective Pulsed Mode operation. This technique
enables the reduction of the standby power consumption to
approximately 1.0 W while delivering 300 mW in a 150 W SMPS.
General Features
Protections
SMPS Controller
*For additional information on our Pb--Free strategy and soldering details, please
 Semiconductor Components Industries, LLC, 2010
December, 2010 - - Rev. 10
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
The MC44608 is a high performance voltage mode controller
The device also features a very high efficiency standby management
Against Open Loop
Low Power Mode
Integrated Startup Current Source
Lossless Off- -Line Startup
Direct Off- -Line Operation
Fast Startup
Flexibility
Duty Cycle Control
Undervoltage Lockout with Hysteresis
On Chip Oscillator Switching Frequency 40 or 75
Secondary Control with Few External Components
These are Pb- -Free Devices*
Maximum Duty Cycle Limitation
Cycle by Cycle Current Limitation
Demagnetization (Zero Current Detection) Protection
“Over V
Programmable Low Inertia Over Voltage Protection
Internal Thermal Protection
Pulsed Mode Techniques for a Very High Efficiency
Lossless Startup
Low dV/dT for Low EMI Radiations
CC
Protection” Against Open Loop
1
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
Control Input
MC44608Pxx
A
WL
YY
WW
G
Demag
ORDERING INFORMATION
I
GND
sense
MARKING DIAGRAM
PIN CONNECTIONS
http://onsemi.com
8
1
1
2
3
4
8
CASE 626
P SUFFIX
(Top View)
MC44608Pxx
PDIP- -8
= Device Code
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb--Free Package
YYWWG
1
xx = 40 or 75
AWL
Publication Order Number:
8
7
6
5
V
V
Driver
i
CC
MC44608/D

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MC44608P40G Summary of contents

Page 1

... Lossless Startup  Low dV/dT for Low EMI Radiations *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, 2010 December, 2010 - - Rev. 10 http://onsemi.com ...

Page 2

... Management OC Leading Edge Output Blanking 2 Isense ORDERING INFORMATION Device MC44608P40G MC44608P75G MAXIMUM RATINGS Rating Total Power Supply Current Output Supply Voltage with Respect to Ground All Inputs except Vi Line Voltage Absolute Rating Recommended Line Voltage Operating Condition Power Dissipation and Thermal Characteristics Maximum Power Dissipation 85 ...

Page 3

ELECTRICAL CHARACTERISTICS Characteristic OUTPUT SECTION Output Resistor Sink Resistance Source Resistance Output Voltage Rise Time (from 3 9.0 V) (Note 1) Output Voltage Falling Edge Slew--Rate (from 9.0 V down to 3.0 V) (Note 1) CONTROL INPUT ...

Page 4

ELECTRICAL CHARACTERISTICS otherwise noted) (Note 2) Characteristic DEMAGNETIZATION DETECTION section (note 3) Demag Comparator Threshold (V increasing) pin1 Demag Comparator Hysteresis (Note 4) Propagation Delay (Input to Output, Low to High) Input Bias Current ( mV) demag Negative ...

Page 5

Pin Name 1 Demag The Demag pin offers 3 different functions: Zero voltage crossing detection (50 mV current detection and 120 mA current detection. The 24 mA level is used to detect the secondary reconfiguration status and the ...

Page 6

In standby mode, this current can be lowered as due to the activation of a 200 mA current source: 1 − (kΩ) × Ipk = max −stby R sense (Ω) Switching Phase 200 A m & ...

Page 7

OSC 4 V Vcont 2.4 V Clock DMG Iprim Figure 6. The OSC and Clock signals are provided according to the Figure 6. The Clock signals correspond to the CT capacitor discharge. The bottom curve represents the current flowing in ...

Page 8

Overload In the hiccup mode the 3 distinct phases are described as follows (refer to Figure 7): The SWITCHING PHASE: The SMPS output is low and the regulation block reacts by increasing the ON time (dmax = 80%). ...

Page 9

EQUATION 1 Startup Phase Duration: C × (V stup − UVLO2) Vcc t start– stup where the startup current flowing through V stup C is the V capacitor value Vcc CC EQUATION 2 Switching Phase Duration: ...

Page 10

EQUATION ⎧ ⎧ ⎪ ccS G ⎪ × S∕Stup I ⎩ ⎩ stup EQUATION ⎧ ⎪   I ⎨ × ...

Page 11

Pin6 V Voltage (V) CC Figure 9. Output Switching Speed 85 --25 25 0.0 0.5 ...

Page 12

C 10.00 9.00 8.00 25 C 7.00 85 C 6.00 5.00 0 100 200 Vi Pin8 Voltage (Vi) Figure 15. High Voltage Current Source The data in Figure 16 corresponds to the waveform in Figure 17. The Figure ...

Page 13

The Figure 19 represents a complete power supply using the secondary reconfiguration. The specification is as follows: Input source: 3 Outputs Output power Standby mode R F6 47288900 FI RFI WIDE C1 FILTER MAINS 100 nF C3 D1, D2, D3, ...

Page 14

The secondary reconfiguration is activated by the mP through the switch. The dV/dt appearing on the high voltage winding (pins 14 of the transformer) at every TMOS switch off, produces a current spike through the series RC network R7, C17. ...

Page 15

... Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303--675--2175 or 800--344--3860 Toll Free USA/Canada Fax: 303--675--2176 or 800--344--3867 Toll Free USA/Canada Email: orderlit@onsemi ...

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