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KA7524B
Power Factor Correction Controller
Features
* * * * * Internal self-starting Micro power start up mode Included under voltage lockout circuit Internal 1% reference High output current : Peak 500mA
Descripiton
The KA7524B provides the necessary features to implement the Electronic BALLAST control and S.M.P.S application for designing on active power factor correction circuit.
8-DIP
1
8-SOP
1
Internal Block Diagram
Rev. 5.0
(c)2000 Fairchild Semiconductor International
KA7524B
Connection Diagram
KA7524/KA7524D (8 DIP, 8 SOP)
Absolute Maximum Ratings
Parameter Supply Voltage Peak Driver Output Current Detect Clamping Diode Current Output Clamping Diode Current Operating Ambient Temperature Storage Temperature Symbol VCC IO(P) IDET IO(C.D) TOPR TSTG Value 20 500 10 10 -25 ~ + 100 -65 ~ + 150 Unit V mA mA mA -
2
KA7524B
Electrical Characteristics
Parameter Start Threshold Voltage UV Lockout Hysteresis Supply Zener Voltage SUPPLY CURRENT SECTION Start-Up Supply Current Operating Supply Current Dynamic Operating Current REFERENCE SECTION(NOTE1) Reference Voltage Line regulation Load Regulation Temperature Stability ERROR AMPLIFIER SECTION Input Offset Voltage Input Bias Current Large Signal Open Loop Gain Power Supply Rejection Ratio Output Current Output Voltage Range Unity Gain Bandwidth Phase Margin VIO IBIAS GV PSRR ISOURCE ISINK VO(P) UBW MPH -15 -1 60 60 2 1.2 -0.1 100 86 1.0 57 15 1 -2 4 mV uA dB dB mA mA V MHz VREF VREF VREF STT KA7524B/BD 12VVCC16V 0IREF2mA 2.475 2.5 0.1 0.1 20 2.525 10 10 V mV mV mV ISTART ICC ICC(D) VCCVTH VCC = 12V, No Load VCC = 12V, f = 50KHz, CGS = 1000PF 0.25 6 10 0.5 12 20 mA mA mA Symbol VTH(ST) VTHS VZ Conditions Min. 9.2 1.8 Typ. 10 2.0 17 Max. 10.8 2.2 Unit V V V UNDER VOLTAGE LOCKOUT SECTION
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KA7524B
Elctrical Characteristics (Continued)
Parameter MULTIPLIER SECTION M1 Input Voltage Range M2 Input Voltage Range Input Bias Current Mulitiplier Gain (Note2) Multiplier Gain Stability CURRENT SDNSE SECTION Input Offset Voltage Input Bias Current C. Sense Delay to Output CURRENT DETECT SECTION Input Voltage Threshold Hysteresis Input Low Clamp Voltage Input High Clamp Voltage Input Current Input Clam Diode Current CURRENT DETECT SECTION Output Voltage(High) Output Voltage(Low) Rising Time Falling Time SELF-STARTING SECTION Self-Starting Time tSS 12 uS
Notes : 1. Reference can not be tested on the PKG 2. GV = VO(M) / (VI(M1)VI(M2) - VREF)
Symbol VI(M1) VI(M2) IBIAS GV STT VIO IBIAS tD(S) VTH VTHS VIC(L) VIC(H) IJ ICD VO(H) VO(L) tR tF
Conditions VI(M1) = 0.5V, VI(M2) = 3V 0VVCS1.7V Error Amp Output = 3.7V IDET = 0mA IDET = 3mA 0.9VDET6V VDET0.9V, VDET6V IO = -10mA, VCC = 12V IO = 10mA, VCC = 12V CL = 1000pF CL = 1000pF
Min. 0 VREF -2 -10 -5 1.0 6.1 7 -
Typ. -0.5 0.8 -0.2 200 1.3 200 7.1 5 9 0.8 100 90
Max. 2 VREF+1 2 10 5 500 1.6 0.95 3 1.8 200 200
Unit V V uA uA / mV uA nS V mV V V uA mA V V nS nS
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KA7524B
KA7524B Application Circuit
Part List
Resistor R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15 R16 R17 R18 R19 VR1 NTC 1.8M 10K 100K 3.3ohm 22K 27ohm 2.2K 2.2M 150K 330ohm 0.75ohm 5.1K 1M 390K 3.9M 5.1ohm 27ohm 5.1ohm 27ohm 5K 10ohm C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 C15 Capacitor 0.1uF 0.1uF 4700pF 4700pF 0.1uF 0.01uF 100uF 0.1uF 3300pF 47uF/450V 0.1uF 3300pF 3300pF 0.01uF 0.01uF IC1 Q1 Q2 Q3 D1 D2 D3 D4 D5 D6 D7 D8 BD1 TNR DIAIC Semiconductor KA7524B IRF830 KSC5039 KSC5039 1N4004 1N4937 1N4148 1N4148 FR107 FR107 FR107 FR107 PBP204 12G471 32V
Magnetics T1 EI-25 (PC30): P = 70T, S = 4T, Gap = 0.5mm T2 D15 (GP-5): P = 3T, S = 13T L1 EE-25 (Iron Power) 80mH L2, L3 EI-25 (PC30): 150T, Gap = 0.4mm
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KA7524B
Mechanical Dimensions
Package Dimensions in millimeters
8-DIP
1.524 0.10 0.018 0.004 0.060 0.004 0.46 0.10 6.40 0.20 0.252 0.008 0.79 ) 0.031 #8 9.20 0.20 0.362 0.008 9.60 MAX 0.378 #5 2.54 0.100 5.08 MAX 0.200 7.62 0.300 3.40 0.20 0.134 0.008 3.30 0.30 0.130 0.012 0.33 0.013 MIN
#1
#4
0.25 -0.05
0~15
+0.10
0.010 -0.002
+0.004
6
(
KA7524B
Mechanical Dimensions (Continued)
Package Dimensions in millimeters
8-SOP
MIN 1.55 0.20 0.061 0.008 0.1~0.25 0.004~0.001
#1
#8 4.92 0.20 0.194 0.008 5.13 MAX 0.202
( #4 #5 6.00 0.30 0.236 0.012
+0.10 0.15 -0.05 +0.004 0.006 -0.002
0.56 ) 0.022 1.80 MAX 0.071 MAX0.10 MAX0.004 3.95 0.20 0.156 0.008 5.72 0.225 0.50 0.20 0.020 0.008
0~
8
1.27 0.050
0.41 0.10 0.016 0.004
7
KA7524B
Ordering Information
Product Number KA7524B KA7524BD Package 8-DIP 8-SOP Operating Temperature -25C ~ +100C
8
KA7524B
9
KA7524B
DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR INTERNATIONAL. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user.
www.fairchildsemi.com 9/28/00 0.0m 001 Stock#DSxxxxxxxx 2000 Fairchild Semiconductor International
2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.

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