DIMMING BALLAST CONTROL IC

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1 KA75/D BALLAST CONTROL IC The KA75 is a electronic ballast controller for fluorescent inverter systems. It contains whole function in KA751, current feed back and preheating time controlled by temperature sensing. DIP FEATURES 3-step soft start Input voltage limit & Brown out Non Lamp detect, & Lamp reset ZVS Guard control Current feedback control Preheating time controlled by temperature sensing 0 SOP ORDERING INFORMATION Device Package Operating Temperature KA75 SDIP -5 ~ + 100Î KA75D 0 SOP -5 ~ + 100Î BLOCK DIAGRAM T sns R hys V ds V gs V CC BROWN OUT OVER TEMPERATURE INPU T V LIMIT ZVS GUARD CONTROL UVLO & 5V V re f 14 V re f STEP SOFT START LOW- TEMPER SAWTOOTH GENERA- TOR + - D-F/F OUTPUT STAGE 19 OUT OUT1 1 DC-FEED FORWARD DIMMING BOX CURRENT FEEDBACK MULTIPLIER NON LAMP OVER- CURRENT 4 V sns DELAY TIMER LAMP DETECT LAMP RESET ñ V lm 1 V lm V mo V fb Rev. B 1999 Fairchild Semiconductor Corporation

2 KA75/D ABSOLUTE MAXIMUM RATINGS (T A = 5Î, unless otherwise specified) Characteristic Symbol Value Unit Supply Voltage V CC 0 V Peak driver output current Operating ambient temperatute I O(P) T (OPR) ~ +100 ma Î Î Storage temperature T STG -65 ~ +150 ELECTRICAL CHARACTERISTICS (V CC = 1V, T A = 5Î, unless otherwise specified) Characteristics Symbol Test Conditions Min Typ Max Unit Under Voltage Lock Out Section Start-Up Threshold Voltage V ST V UVLO Hysteresis V THS V Start-Up Supply Current I ST V CC = 9V ma Operating Supply Current I CC V CC = 14V, No Load ma Reference Section Reference Voltage V REF V Load Regulation LV REF 0I REF5mA ï 5 0 mv Preheating Section Preheating Frequency F P V CS = 0V KHz Preheating Time Current I P V CS = 0V sa Preheating Dead Time T PD sa Oscillator Section Amplitude V (OSC) V Normal Frequency F N KHz Normal Dead Time T ND V CS = V ss 3-step Frequency Section Preheating Voltage Range V PR V Soft start Voltage Range V SR V

3 KA75/D ELECTRICAL CHARACTERISTICS (V CC = 1V, T A = 5Î, unless otherwise specified) Characteristic Symbol Test Conditions Min Typ Max Unit Dimming Control Section Dimming Current I DIM R D = 10K` sa Option Comparator Option Comparator Voltage V OPT V Option Section Rising time T R No Load, V CC = 10V ï ns Falling time T F No Load, V CC = 10V ï ns High Voltage V OH I O = 30mA, V CC = 10V 7 8 ï V Low Voltage V OI I O = 30mA, V CC = 10V ï V Over Temperature Protection High Temperature Voltage V HT V Reset Temperature Voltage V RT V Hysteresis Max Current I HYS sa Input Voltage Limit High Limit Voltage V H(LIM) R DS = 1K` V High Limit Hysteresis V HYS(H) R DS = 1K` V Low Limit Voltage V I(LIM) R DS = 1K` V Low Limit Hysteresis V HYS(I) R DS = 1K` V Lamp Detection Lamp1 Detect Voltage V IM V Lamp Detect Voltage V IM V Temperature Sense Negative Preheating Current I P(-) 6 10 sa Multiplier Section Multiplier Gain (NOTE) G M ï Multiplier Input 1 Current I ML R ML = M`, V ML = 7V 6 30 sa Multiplier Input Current I FB V FB = GND sa

4 KA75/D ELECTRICAL CHARACTERISTICS (V CC = 1V, T A = 5Î, unless otherwise specified) Characteristic Symbol Test Conditions Min Typ Max Unit Brown Out Section Borwn out Voltage V BO V Borwn out Hysteresis V BYS V Time Delay Section Start Feedback Voltage V SF V DC Feed Forward Section Feed Forward Current I FF sa ZVS Guard Section0.4 High Sense Voltage V HS mv Low Sense Voltage V IS mv

5 KA75/D PIN CONNECTION (top view) 0 SOP DIP GND 1 0 V CC GND 1 V CC Out1 19 Out Out1 1 Out NC 3 18 R hys NC 3 0 R hys V sns 4 17 T sns V sns 4 19 T sns V lm1 5 KA75D 16 V ds V lm1 5 KA75 18 V ds V lm 6 15 V gs V lm 6 17 V gs C t 7 14 V ref NC 7 16 NC R t 8 13 V fb C t 8 15 V ref R d 9 1 V ml R t 9 14 V fb C s V mo R d V ml C s 11 1 V mo

6 : : KA75/D H F.G N 50V/A FUSE 1G471K TNR 10D-11 BSF-15 NTC1 L1 KBL05 C3 B/D C1 C 4700pF/450V 0.1u/450V 0.1u/450V C4 4700pF/450V C5 47/50V ZD1 18V / 1W C9 uf 5V R3 1K R 51K GND VCC C7 330pF/10V 10K VR1 OUT1 K A NC Rhys Vsns Vlm1 Vlm Ct OUT 19 Tsns 17 Vds 16 Vgs 15 Vref NTC C KTD5-350 R6 K 33K Rt 14 Vfb 500K VR Rd Vm C8 + Cs Vfo 10uF/10V C11 C1 104 /10V 104 /10V R4 R5 1M 1M n1 KA75 APPLICATION VER. 7.1 D5 D4 1N4148 1N4148 T1 R7 51ã Q1 IRF830 R15 390K R11 C19 D6 C1 D8 C13 300K L C15 88 / 1000V 103 1N N 4937 n LAMP T1 : EE1619 : n1:n:n3 = 3:4:4 LAMP Q R8 51ã L, L3 : EI5 L3 88 / 1000V C16 R17 R19 C0 D7 R16 C D9 IRF K n3 1M 1M 103 1N N 4937 R9 1.0ã R1 R14 1M 1K R10 1.ã R13 1K C17 R18 R V 30K 30K C V

7 KA75/D PARTS LIST (KA75/D) Part Value Part Value Part Value R1 100K` 1W R30 1K` D1 1N4937 R 100K` 1W VR1 500K` D 1N4937 R3 K` D3 1N4937 R4 K` C1 0.1sF 50V D4 1N4937 R5 1K` C 0.1sF 50V D5 1N4937 R6 10` 1/W C3 4700pF 50V D6 1N4937 R7 50K` C4 4700pF 50V R8 36K` C5 0.1sF 315V R9 1K` C6 sf 4V R10 1K` C7 330sF 10V R11 K` C8 10sF 10V ZD1 15V 1W R1 1.` C V ZD 3.9V 0.5W R13 100` 1W C V ZD3 3.9V 0.5W R14 ` C V R15 ` C1 68sF 450V R16 1M` C13 15 Q1 KSP44 R17 1K` C V Q KSP44 R18 390K` C V Q3 IRF830 R19 390K` C Q4 IRF830 R0 1M` C R1 1M` C L1 BSF-15 R 390K` C T1 EE1619 R3 390K` C0 1sF 10V T EI5 R4 30K` C1 sf 10V T3 EI5 R5 1` C 1sF 10V R6 30K` B/D KBL05 R7 1K` TNR 1G471K IC KA75D R8 1M` NTC1 10D-11 R9 1M` NTC KTD5-350 FUSE 50V/A

8 TRADEMARKS The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended to be an exhaustive list of all such trademarks. DISCLAIMER ACEx CoolFET CROSSVOLT E CMOS TM FACT FACT Quiet Series FAST FASTr GTO HiSeC ISOPLANAR MICROWIRE POP PowerTrench QS Quiet Series SuperSOT -3 SuperSOT -6 SuperSOT -8 TinyLogic UHC VCX 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 FAIRCHILD SEMICONDUCTOR CORPORATION. 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, or (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 significant injury to the user. PRODUCT STATUS DEFINITIONS Definition of Terms. A critical component is 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. Datasheet Identification Product Status Definition Advance Information Preliminary No Identification Needed Formative or In Design First Production Full Production This datasheet contains the design specifications for product development. Specifications may change in any manner without notice. This datasheet contains preliminary data, and supplementary data will be published at a later date. Fairchild Semiconductor reserves the right to make changes at any time without notice in order to improve design. This datasheet contains final specifications. Fairchild Semiconductor reserves the right to make changes at any time without notice in order to improve design. Obsolete Not In Production This datasheet contains specifications on a product that has been discontinued by Fairchild semiconductor. The datasheet is printed for reference information only.

9 TRADEMARKS The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended to be an exhaustive list of all such trademarks. DISCLAIMER ACEx CoolFET CROSSVOLT E CMOS TM FACT FACT Quiet Series FAST FASTr GTO HiSeC ISOPLANAR MICROWIRE POP PowerTrench QS Quiet Series SuperSOT -3 SuperSOT -6 SuperSOT -8 TinyLogic UHC VCX 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 FAIRCHILD SEMICONDUCTOR CORPORATION. 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, or (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 significant injury to the user. PRODUCT STATUS DEFINITIONS Definition of Terms. A critical component is 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. Datasheet Identification Product Status Definition Advance Information Preliminary No Identification Needed Formative or In Design First Production Full Production This datasheet contains the design specifications for product development. Specifications may change in any manner without notice. This datasheet contains preliminary data, and supplementary data will be published at a later date. Fairchild Semiconductor reserves the right to make changes at any time without notice in order to improve design. This datasheet contains final specifications. Fairchild Semiconductor reserves the right to make changes at any time without notice in order to improve design. Obsolete Not In Production This datasheet contains specifications on a product that has been discontinued by Fairchild semiconductor. The datasheet is printed for reference information only.

VOLTAGE-MODE PWM CONTROLLER FEATURES ORDERING INFORMATION BLOCK DIAGRAM 16-DIP

VOLTAGE-MODE PWM CONTROLLER FEATURES ORDERING INFORMATION BLOCK DIAGRAM 16-DIP VOLTAGE-MODE PWM CONTROLLER The KA7500B is used for the control circuit of the pulse width modulation switching regulator. The KA7500B consists of 5V reference voltage circuit, two error amplifiers, flip