automotive power datasheet rev. 1.1, 2009-12-16 TLD5095EL dc/dc boost, buck-boost, sepic controller infineon ? power led driver www.datasheet.net/ datasheet pdf - http://www..co.kr/
datasheet 2 rev. 1.1, 2009-12-16 TLD5095EL table of contents 1 overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.1 pin assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.2 pin definitions and functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 general product characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4.1 absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4.2 functional range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4.3 thermal resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5 boost regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5.1 description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5.2 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 6 oscillator and synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 6.1 description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 6.2 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 7 enable and dimming function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 7.1 description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 7.2 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 8 linear regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 8.1 description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 8.2 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 9 protection and diagnostic functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 9.1 description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 9.2 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 10 application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 10.1 further application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 11 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 12 package outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 table of contents www.datasheet.net/ datasheet pdf - http://www..co.kr/
pg-ssop-14 (e-pad) type package marking TLD5095EL pg-ssop-14 (e-pad) tld5095 datasheet 3 rev. 1.1, 2009-12-16 dc/dc boost, buck-boos t, sepic controller TLD5095EL TLD5095EL 1overview features ? wide input voltage range from 4.75 v to 45 v ? constant current or constant voltage regulation ? drives leds in boost (b2g), buck-boost (b2b) and sepic topology ? very low shutdown current: iq< 10 a ? flexible switching frequency range, 100 khz to 500 khz ? synchronization with external clock source ? output open circuit diagnostic output ?pwm dimming ? internal soft start ? 300mv high side current sens e to ensure highest flexib ility and led current accuracy ? internal 5 v low drop out voltage regulator ? wide led current range via simple adaptation of external components ? available in a small thermally enhanced pg-ssop-14 (e-pad) package ? output overvoltage protection ? over temperature shutdown ? automotive aec qualified ? green product (rohs) compliant description the TLD5095EL is a smart led boost controller with built in protection and diagnostic features. the main function of this device is to regulate a constant led current. the cons tant current regulation is especially beneficial for led color accuracy and longer lifetime. the controller concept of the TLD5095EL allows a multi-purpose usage such as boost, buck-boost and sepic configuration with various load current levels by simply adjusting the external components. the TLD5095EL has a pwm output for dimming a led load. the diagnostics are communicated on a status output (pin st) to indicate a fault condition such as an led open circuit. the switching frequency is adj ustable in the range of 100 khz to 500 khz and can be synchronized to an external clock source. the TLD5095EL features an enable function reducing the shut-down current consumption to <10 a. the current mode regulation sc heme of this device provides a stable regulation loop maintained by small external compensation components. the integrated soft-start feature limits the current peak as well as voltage overshoot at start-up. this ic is suited for use in the harsh automotive environments and provides protection functions such as output overvoltage protection and overtemperature shutdown. applications ? automotive exterior lighting (brake light, tail li ght, fog light, chmsl, daytime running light, position light, turn indicators) ? automotive interior lighting (reading li ght, dome light, display backlighting) www.datasheet.net/ datasheet pdf - http://www..co.kr/
datasheet 4 rev. 1.1, 2009-12-16 TLD5095EL block diagram 2 block diagram figure 1 block diagram en / pwmi comp in fbl fbh freq/ sync gnd st oscillator 14 13 10 8 11 12 3 9 6 7 swcs 4 swo 2 ivcc 1 diagnostics logic ldo ovfb sgnd soft start slope comp. internal supply on/off logic leading edge blanking 5 pwmo en_int/ pwm_int thermal protection open load detection over volage protection pwm generator power switch gate driver feedback voltage error amplifier dimming switch gate driver power on reset en_int/ pwm_int blockd iagram .vsd switch current error amplifier www.datasheet.net/ datasheet pdf - http://www..co.kr/
TLD5095EL pin configuration datasheet 5 rev. 1.1, 2009-12-16 3 pin configuration 3.1 pin assignment figure 2 pin configuration 3.2 pin definitions and functions pin symbol function 1ivcc internal ldo output; used for internal biasing and gate drive. bypass with external capacitor. pin must not left open. 2swo switch output; connect to gate of external boost converter switching mosfet 3sgnd current sense ground; ground return for current sense switch 4swcs current sense input; detects the peak current through switch 5pwmo pwm dimming output; connect to gate of external mosfet 6fbh voltage feedback positive; non inverting input (+) 7fbl voltage feedback negative; inverting input (-) 8comp compensation input; connect r and c networ k to pin for stability , 1 & |