定電流駆動 LED ドライバ

Transcription

1 TPS0 µ µ L. µh D. V to V C IN. µf SW OVP GND LED FB C O 00 nf V Enable/PWM Brightness Control 00 Hz to 0 khz Ω µ.

2 () T A PACKAGE PACKAGE MARKING 0 C C TPS0DRB AQN () TPS0 Supply Voltages, v () () 0.V V Voltages, V (Rs),V (),V (FB) 0.V Vin + 0.V Voltages, V (SW),V () (LED) 0 V Voltage, V (OVP) 0 V Continuous power dissipation Operating junction temperature range 0 C 0 C Storage temperature range, T STG C 0 C Lead temperature (soldering, 0 sec) 0 C THERMAL T A C DERATING FACTOR T A =0 C T A = C PACKAGE RESISTANCE POWER RATING ABOVE T A = C POWER RATING POWER RATING -pin QFN R θja = 0 C/W () 0 mw. mw/ C 0 mw mw θ MIN NOM MAX V I Input voltage range..0 V T A Operating ambient temperature 0 C T J Operating junction temperature 0 C

3 MIN TYP MAX SUPPLY CURRENT V I Input voltage range..0 V I (Q) Operating quiescent current into I O =0mA, not switching µa I O(sd) Shutdown current = GND 0. µa V UVLO Under-voltage lockout threshold V I falling.. V V IH high level input voltage. V V IL low level input voltage 0. V I Ikg input leakage current = GND or 0. µa t on Minimim pulse witdh to enable = low to high 00 µs t off Minimum pulse width to disable = high to low 0 ms f () PWM switching frequency applied to 0. 0 khz D () PWM duty cycle applied to % 00% POWEWITCH AND CURRENT LIMIT (SW) V S Maximum switch voltage 0 V r ds(on) MOSFET on-resistance V I =. V; I (SW) = 00 ma mω I lkg MOSFET leakage current V (SW) =V 0. 0 µa I LIM MOFSET current limit ma T ON Power switch maximum on-time V O =V. µs T OFF Power switch minimum off-time 00 ns LED SWITCH AND CURRENT LIMIT (LED) V S Maximum switch voltage 0 V I (LED) Maximum LED switch current 0 ma r ds(on) MOSFET on-resistance V I =. V; I SW =0mA Ω I lkg MOSFET leakage current V (LED) =V 0. 0 µa OUTPUT V O Output voltage range OVP connected V I.9 V I (FB) Feedback input bias current () V (FB) = 0. V 00 na V FB Feedback trip point voltage. V V I.0 V 0 mv V (OVP) Output overvoltage protection V O rising 9 V V hys(ovp) Output overvoltage protection hysteresis. V I (OVP) OVP input current V O =V µa DRB PACKAGE (TOP VIEW) LED SW RS Exposed Thermal Die Pad OVP GND FB

4 NO. I/O I FB I GND LED I OVP I RS O SW I I EN EN SW UVLO Bias V REF 0. V Control Logic Gate Driver Q Thermal Shutdown OVP Enable Control Logic EN Current Limit Softstart R 00 kω. µs Max On Time R kω GND PWM Gate Drive Overvoltage Protection + 0. V LED FB V REF Error Comparator + 00 ns Min Off Time Q RS

5 L. µh D. V to V C IN. µf SW OVP GND LED FB C O µf V Enable/PWM Brightness Control 00 Hz to 0 khz Ω L = Murata LQHCNR (. µh) D = Zetex Schottky ZHCS00 C IN =. µf XR 0% JMKBJMG-T C OUT = µf XR 0% TMKBJ0KL-T η Efficiency vs LED current vs Input voltage I Q Operating Quiescent Current into vs Input voltage and Temperature V (FB) Feedback voltage vs Temperature I (FB) Feedback current vs Temperature r ds(on) Main switch Q vs Temperature vs Input voltage LED switch Q vs Temperature vs Input voltage I LED Average LED current vs PWM duty cycle on pin Soft start PFM operation (fixed peak current control) Burst mode operation (fixed peak current control) PWM dimming Efficiency - % 90 0 LEDs V, C O = µf Efficiency vs LED Current V I =. V V I =. V V I =. V I O - Output Current - ma Efficiency - % 90 0 LEDs V, C O = µf Efficiency vs Input Voltage I O = ma V I - Input Voltage - V

6 0 Operating Quiescent Current into vs Input Voltage and Temperature 0 Feedback Voltage vs Temperature Quiescent Current into V I /µa T A = C T A = C T A = 0 C V (fb) - Feedback Voltage - mv 0 V CC =. V V I - Input Voltage - V T A - Free-Air Temperature - C I (fb) - Feedback Current - na V CC = V Feedback Current vs Temperature V CC =. V V CC =. V r ds(on) - On-State Resistance - MΩ V CC =. V r ds(on) Main Switch (Q) vs Temperature T A - Free-Air Temperature - C T A - Free-Air Temperature - C r ds(on) - On-State Resistance - MΩ r ds(on) Main Switch (Q) vs Input Voltage T A = C r ds(on) - On-State Resistance - Ω V CC =. V r ds(on) LED Switch (Q) vs Temperature V I - Input Voltage - V T A - Free-Air Temperature - C 9

7 r ds(on) LED Switch (Q) vs Input Voltage Average LED Current vs PWM Duty Cycle on Pin r ds(on) - On-State Resistance - Ω T A = C I O - Output Current - ma 0 0 f PWM = 00 Hz f PWM = khz f PWM = 0 khz V I - Input Voltage - V Duty Cycle - % 0 Softstart PFM Operation V out 0V/Div V sw V/Div V out 00mV/Div V/Div Input Current 00mA/Div LED Current 0mA/Div 0µs/Div.µs/Div Bust Mode Operation PWM Dimming V sw V/Div V sw V/Div V out 0mV/Div LED Current 0mA/Div V out 00mV/Div LED Current 0mA/Div.µs/Div µs/div

8 µ I P(typ) =I (LIM) + V I L I P = 00mA + V I L 00ns 00ns µ

9 t p t off t on t on High Low Minimum On-Time to Enable the Device (00 µs) t D = t p /t Minimum Off-Time to Disable the Device ( ms). µ µ 9

10 µ µ µ µ t f = I P L V O V I for t f 00ns I LOAD(max) η I P V = I V O for t f 00ns I LOAD(max) = η I P L VI ( V O V I ) ( I P L 00ns V I ) η I P ƒ S = = 00mA + V I L I O ( V O V I +V F ) ( 00ns I LIM + V I ) 00ns L MHz INDUCTOR VALUE COMPONENT SUPPLIEIZE 0 µh murata LQHCN00K0, mm,mm.mm. µh murata LQHCNRM, mm, mm,0mm 0 µh Coilcraft DO0T-0MX, mm,mm,mm. µh Sumida CDRHD-R, mm, mm, mm. µh Sumida CMDD-R, mm, mm, mm. µh Sumida CMDD-R, mm, mm, mm. µh Sumida CMDD-R, mm, mm, mm. µh Coiltronics SD-R, mm, mm, mm. µh Coilcraft LPO0-M, mm, mm,0 mm. µh Coilcraft LPO0-M, mm, mm,0 mm. 0

11 µ ( ( ) ) L I I V O = O LIM(min) + V I 00ns + I C O ƒ P ESR s V O + V F V I COMPONENT SUPPLIER REVERSE VOLTAGE ON Semiconductor MBR00 0 V ON Semiconductor MBR00 0 V Toshiba CRS0 0 V Zetex ZHCS00 0 V. µ η = V LED I LED V I I I µ CAPACITOR VOLTAGE RATING COMPONENT SUPPLIER COMMENTS. µf/xr/00. V Tayo Yuden JMKBYMG C I 0 µf/xr/00. V Tayo Yuden JMKBJ0MG C I 00 nf Any C O 0 nf Any C O 0 nf Any C O.0 µf/xr/0 V Tayo Yuden TMKBJ0KL C O.0 µf/xr/0 V Tayo Yuden GMKBJ0KL C O. µf/xr/0 V Tayo Yuden TMKBJMG C O.

12 I LED = V FB = 0.V µµ R = V ref V ADJ(min) I R = V ref I O(max) R + V ADJ(min) I O(min) R V ADJ(max) V ADJ(max) I O(max) +V ref I O(min) V ADJ(min) I O(min) V ref I O(max) V S = V ref ( + R R ) R R V ADJ(min) PWM 00 Hz to 0 khz GND SW OVP LED FB RS R s. Enable: = High Disable: = Low GND SW OVP LED FB RS R PWM Signal R V ADJ (Brightness Control) R I R s V s C Optional Filter for the use of a PWM Signal.

13 = V S I O(max) θ θ PWM Brightness Control 00 Hz to 0 khz Enable (EN) GND FB SW OVP LED RS 9. PWM Brightness Control 00 Hz to 0 khz Enable (EN) GND FB SW OVP LED RS 0. PWM Brightness Control 00 Hz to 0 khz Enable (EN) GND FB SW OVP LED RS.

14 L. µh Coilcraft LPO0- D ZHCS00.0 V to.0 V C (IN). µf GND FB SW OVP LED C O µf Enable/PWM Brightness Control 00 HZ to 0 khz Ω. L. µh SUMIDA CMDD D ZHCS00 V IN =.0 V to.0 V C (IN). µf GND FB SW OVP LED C O. µf Enable/PWM Brightness Control 00 HZ to 0 khz Ω. µ

15 L. µh Coilcraft LPO0- D ZHCS00 V IN =. V to V C IN. µf GND FB SW OVP LED C O µf Enable/PWM Brightness Control 00 Hz to 0 khz Ω. L. µh D ZHCS00 V IN =.0 V to.0 V C (IN). µf GND SW OVP LED C O 00 nf FB Analog Brightness Control. V = LED Off 0 V = ILED = 0 ma R 0 kω R 0 kω Ω.

16 L. µh D ZHCS00 V IN =.0 V to.0 V C IN. µf GND FB SW OVP LED C O 00 nf. V PWM Signal 0 % LEDs on 00 % LEDs Off R C R 0 kω R 0 kω Ω.

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18 Orderable Device Status () Package Type Package Drawing Pins Package Qty TPS0DRBR ACTIVE SON DRB 000 Green (RoHS & no Sb/Br) TPS0DRBRG ACTIVE SON DRB 000 Green (RoHS & no Sb/Br) TPS0DRBT ACTIVE SON DRB 0 Green (RoHS & no Sb/Br) TPS0DRBTG ACTIVE SON DRB 0 Green (RoHS & no Sb/Br) Eco Plan () Lead/Ball Finish MSL Peak Temp () CU NIPDAU CU NIPDAU CU NIPDAU CU NIPDAU Level--0C- YEAR Level--0C- YEAR Level--0C- YEAR Level--0C- YEAR

19 REEL DIMENSIONS TAPE DIMENSIONS K0 P Reel Diameter Cavity A0 B0 W A0 B0 K0 W P Dimension designed to accommodate the component width Dimension designed to accommodate the component length Dimension designed to accommodate the component thickness Overall width of the carrier tape Pitch between successive cavity centers Reel Width (W) QUADRANT ASSIGNMENTS FOR PIN ORIENTATION IN TAPE Sprocket Holes Q Q Q Q Q Q Q Q User Direction of Feed Pocket Quadrants *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Reel Diameter (mm) Reel Width W (mm) A0 (mm) B0 (mm) K0 (mm) P (mm) W (mm) Pin Quadrant TPS0DRBON DRB Q TPS0DRBT SON DRB Q 9

20 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS0DRBON DRB TPS0DRBT SON DRB

21 A. B. C. D. E.

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23 A. B. C. D. E. F. (SLVSA)

24 IMPORTANT NOTICE 00.