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ML4802CS

Description
0.5 A POWER FACTOR CONTROLLER WITH POST REGULATOR, PDSO16
CategoryPower/power management    The power supply circuit   
File Size286KB,15 Pages
ManufacturerFairchild
Websitehttp://www.fairchildsemi.com/
Download Datasheet Parametric Compare View All

ML4802CS Overview

0.5 A POWER FACTOR CONTROLLER WITH POST REGULATOR, PDSO16

ML4802CS Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerFairchild
Parts packaging codeSOIC
package instructionSOP, SOP16,.25
Contacts16
Reach Compliance Codeunknow
ECCN codeEAR99
Analog Integrated Circuits - Other TypesPOWER FACTOR CONTROLLER WITH POST REGULATOR
control modeCURRENT-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage16.5 V
Minimum input voltage11.2 V
Nominal input voltage15 V
JESD-30 codeR-PDSO-G16
JESD-609 codee0
length9.9 mm
Number of functions1
Number of terminals16
Maximum operating temperature70 °C
Minimum operating temperature
Maximum output current0.5 A
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Encapsulate equivalent codeSOP16,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)NOT SPECIFIED
Certification statusNot Qualified
Maximum seat height1.75 mm
surface mountYES
Switch configurationSINGLE
technologyBIPOLAR
Temperature levelCOMMERCIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width3.9 mm
December 2000
PRELIMINARY
ML4802
PFC/PWM Controller Combo with Green Mode
GENERAL DESCRIPTION
The ML 4802 is a controller for power factor corrected,
switched mode power supplies that offers Green Mode
operation and reduced start-up and operating currents.
Green Mode is an efficiency improving circuit feature
which operates automatically in low power situations.
This feature helps meet the demands of Energy Star™
programs.
Power Factor Correction (PFC) offers the use of lower cost
bulk capacitors, reduces power line loading and stress on
the switching FETs. The ML4802 includes circuits for the
implementation of a leading edge, average current,
“boost” type power factor corrector and a trailing edge
Pulse Width Modulator (PWM).
The PFC frequency of the ML4802 is automatically
synchronized to be one half that of the PWM. This
technique allows the user to design with smaller PWM
components while maintaining the optimum operating
frequency for the PFC. An over-voltage comparator shuts
down the PFC section in the event of a sudden decrease
in load. The PFC section also includes peak current
limiting and brown-out protection.
s
s
FEATURES
Internally synchronized PFC and PWM in one IC
Green Mode maximizes efficiency during low power
standby operation
Low supply current
(Start-up 200µA typ., operating 5.5mA typ.)
Average current continuous boost leading edge PFC
High efficiency trailing edge PWM can be configured
for current mode operation
Reduced ripple current in the storage capacitor
between the PFC and PWM sections
PFC overvoltage comparator eliminates output
“runaway” due to load removal
Current fed gain modulator for improved noise
immunity
Overvoltage protection, UVLO, and soft start
s
s
s
s
s
s
s
BLOCK DIAGRAM
VEAO
16
IEAO
1
POWER FACTOR CORRECTOR
+
VCC
13
VEA
VFB
15
2.5V
IAC
VRMS
ISENSE
RAMP 1
2
4
3
8
GAIN
MODULATOR
1.8kΩ
-
+
1.8kΩ
+
IEA
PFC
CONTROLLER
8V
2.75V
-
OVP
7.5V
REFERENCE
14 VREF
-1V
+
-
PFC ILIMIT
PFC
OUTPUT
DRIVER
12 PFC OUT
÷2
VFB
OSCILLATOR
DC LIMIT
VDC
GREEN
MODE
CONTROLLER
RT/CT 7
RAMP 2
9
8V
VLS
1.25V
-
GREEN
MODE
VDC
6
VCC
25µA
+
VIN OK
-
+
DC ILIMIT
+
VFB
2.43V
-
+
SS
5
8V
1.5V
-
PWM
OUTPUT
DRIVER
11 PWM OUT
PULSE WIDTH MODULATOR
REV. 1.0.1 12/12/2000

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Description 0.5 A POWER FACTOR CONTROLLER WITH POST REGULATOR, PDSO16 0.5 A POWER FACTOR CONTROLLER WITH POST REGULATOR, PDIP16 0.5 A POWER FACTOR CONTROLLER WITH POST REGULATOR, PDIP16 0.5 A POWER FACTOR CONTROLLER WITH POST REGULATOR, PDIP16 0.5 A POWER FACTOR CONTROLLER WITH POST REGULATOR, PDIP16
Is it Rohs certified? incompatible incompatible incompatible - incompatible
Maker Fairchild Fairchild Fairchild - Fairchild
Parts packaging code SOIC SOIC DIP - DIP
package instruction SOP, SOP16,.25 PLASTIC, SOIC-16 PLASTIC, DIP-16 - PLASTIC, DIP-16
Contacts 16 16 16 - 16
Reach Compliance Code unknow compli compli - unknow
ECCN code EAR99 EAR99 EAR99 - EAR99
Analog Integrated Circuits - Other Types POWER FACTOR CONTROLLER WITH POST REGULATOR POWER FACTOR CONTROLLER WITH POST REGULATOR POWER FACTOR CONTROLLER WITH POST REGULATOR - POWER FACTOR CONTROLLER WITH POST REGULATOR
control mode CURRENT-MODE CURRENT-MODE CURRENT-MODE - CURRENT-MODE
Control Technology PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION - PULSE WIDTH MODULATION
Maximum input voltage 16.5 V 16.5 V 16.5 V - 16.5 V
Minimum input voltage 11.2 V 11.2 V 11.2 V - 11.2 V
Nominal input voltage 15 V 15 V 15 V - 15 V
JESD-30 code R-PDSO-G16 R-PDSO-G16 R-PDIP-T16 - R-PDIP-T16
JESD-609 code e0 e0 e0 - e0
length 9.9 mm 9.9 mm 19.05 mm - 19.05 mm
Number of functions 1 1 1 - 1
Number of terminals 16 16 16 - 16
Maximum operating temperature 70 °C 85 °C 85 °C - 70 °C
Maximum output current 0.5 A 0.5 A 0.5 A - 0.5 A
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY - PLASTIC/EPOXY
encapsulated code SOP SOP DIP - DIP
Encapsulate equivalent code SOP16,.25 SOP16,.25 DIP16,.3 - DIP16,.3
Package shape RECTANGULAR RECTANGULAR RECTANGULAR - RECTANGULAR
Package form SMALL OUTLINE SMALL OUTLINE IN-LINE - IN-LINE
Peak Reflow Temperature (Celsius) NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED - NOT SPECIFIED
Certification status Not Qualified Not Qualified Not Qualified - Not Qualified
Maximum seat height 1.75 mm 1.75 mm 4.32 mm - 4.32 mm
surface mount YES YES NO - NO
Switch configuration SINGLE SINGLE SINGLE - SINGLE
technology BIPOLAR BIPOLAR BIPOLAR - BIPOLAR
Temperature level COMMERCIAL INDUSTRIAL INDUSTRIAL - COMMERCIAL
Terminal surface Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) - Tin/Lead (Sn/Pb)
Terminal form GULL WING GULL WING THROUGH-HOLE - THROUGH-HOLE
Terminal pitch 1.27 mm 1.27 mm 2.54 mm - 2.54 mm
Terminal location DUAL DUAL DUAL - DUAL
Maximum time at peak reflow temperature NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED - NOT SPECIFIED
width 3.9 mm 3.9 mm 7.62 mm - 7.62 mm
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