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WLEDEVM-132 Texas Instruments WLEDEVM-132 Evaluation Module visit Texas Instruments
TPS65142RTGT Texas Instruments LCD Bias Solution For LCD Panels with 6ch WLED Driver 32-WQFN visit Texas Instruments
TPS60252RTER Texas Instruments High Efficiency Charge Pump for 7 WLEDs with I<sup>2</sup>C Interface 16-WQFN -40 to 85 visit Texas Instruments
TPS61162AYFFR Texas Instruments Dual-Channel WLED Drivers For Smart Phone 9-DSBGA -55 to 125 visit Texas Instruments Buy
TPS60250RTET Texas Instruments High Efficiency Charge Pump for 7 WLEDs with I<sup>2</sup>C Interface 16-WQFN -40 to 85 visit Texas Instruments
TPS61163YFFR Texas Instruments Dual-Channel WLED Driver for Smart Phones 9-DSBGA -40 to 150 visit Texas Instruments

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WLED Datasheet

Part Manufacturer Description PDF Type
WLEDEVM-260 Texas Instruments Accessories, Programmers, Development Systems, EVAL MOUDLE LOAD BOARD Original

WLED

Catalog Datasheet MFG & Type PDF Document Tags

APP4187

Abstract: MAX8648 lithium-ion (Li+) battery. The operating voltage from most Li+ cells is 3V to 4.2V, while a WLED's forward , + battery's operating range is not enough to bias WLEDs. Two approaches are commonly used to generate , IQ is usually small compared to the WLED's load current, the efficiency can be closely approximated , voltage is more than the WLEDs' forward voltage (VF). The key to utilizing 1x mode for the lowest , positive-charge-pump WLED solution uses a pFET bypass switch to connect the battery voltage to the WLEDs, as shown in
Maxim Integrated Products
Original
MAX8648 APP4187 MAX8647/MAX8648 AN4187
Abstract: PIN 1 NAME OVP FUNCTION WLED Overvoltage Protection Input. OVP monitors voltage at the WLEDs. Connect , series-connected white LEDs (WLEDs) with constant current to provide uniform WLED intensity for LCD backlighting in , (MAX8901A) or serial pulses (MAX8901B) are applied to dim the WLEDs. See the PWM Dimming Control (MAX8901A , 19-0865; Rev 2; 6/08 Highest Efficiency Supply for 2 to 6 Series WLEDs in a 2mm x 2mm TDFN , and to control WLED intensity. The MAX8901A requires a direct PWM input to regulate WLED intensity Maxim Integrated Products
Original
MAX8901A/MAX8901B MAX8901 T822-1
Abstract: shorted WLEDs in one string. WLED mismatch typically does not create such large voltage difference among , TPS65142 SLVSAX5 â'" JULY 2011 www.ti.com LCD Bias Power Integrated with WLED Backlight , '" Gate Voltage Shaping â'" LCD Discharge Function 150 mA Unity Gain VCOM Buffer 4.5 V to 24 V WLED Backlight Input Range â'" Integrated 1.5 A/40 V MOSFET â'" Boost Output Tracks WLED Voltage â'" Internal , bias power and the WLED backlight in note-pc TFT-LCD panels. The device features a boost converter, a Texas Instruments
Original
Abstract: the WLED is turned on under cold temperature, and the forward voltages of the WLEDs exceed the , are several shorted WLEDs in one string. WLED mismatch typically does not create such large voltage , TPS65142 www.ti.com SLVSAX5 ­ JULY 2011 LCD Bias Power Integrated with WLED Backlight Drivers , Unity Gain VCOM Buffer 4.5 V to 24 V WLED Backlight Input Range ­ Integrated 1.5 A/40 V MOSFET ­ Boost Output Tracks WLED Voltage ­ Internal Compensation ­ External Current Setting Input ­ 6 Current-Sink Texas Instruments
Original
Abstract: 1 OVP FUNCTION WLED Overvoltage Protection Input. OVP monitors voltage at the WLEDs. Connect , series-connected white LEDs (WLEDs) with constant current to provide uniform WLED intensity for LCD backlighting , MAX8901_ drive from 2 to 6 series-connected WLEDs with constant current for uniform WLED intensity and , (MAX8901B) are applied to dim the WLEDs. See the PWM Dimming Control (MAX8901A) and Serial-Pulse Dimming , forward voltage of the WLED string must exceed the maximum input voltage to ensure that the WLEDs remain Maxim Integrated Products
Original

2N3906 SOT-23

Abstract: MMBT3906FSCT-ND and ILED is the current through the WLEDs. A typical application with 10 WLED (VOUT = 30V) with a , more power than a meager 0.6W 10 WLED application, it should be able to drive more WLEDs. If one , for all the WLEDs will be 20mA. Since there are differences between the WLED's forward voltage, the , WLED makes the LCD displays bright and pleasant to the human eye. In order to make the WLEDs emit light, a forward voltage must be applied across the anode and the cathode of the WLEDs. The MIC2297 is
Micrel Semiconductor
Original
M9999-120508-B 2N3906 SOT-23 MMBT3906FSCT-ND CRCW060310R0FRT1 WLED driver CRCW06030R0FRT1 H-22
Abstract: two regulated current outputs for driving WLEDs. Each current output can be individually programmed , WLEDs. The boost regulator runs at 1.2 MHz fixed switching frequency to reduce output ripple and avoid , 3.3 V VI = 3.6 V WLED1 Voltage = 15 V WLED2 Voltage = 15 V VI = 4.2 V 950 930 910 890 870 K VALUE , switching frequency Viout = boost output voltage. It is equal to 330 mV + voltage drop across WLED. Vin , of the WLEDs. The soft start of the current sink circuit is disabled during the PWM dimming to Texas Instruments
Original
TPS61150 TPS61151 SLVS625B TPS61150/1
Abstract: TPS61150A is a high frequency boost converter with two regulated current outputs for driving WLEDs. Each , 1200 90 VI = 3.6V WLED1 Voltage = 15V WLED2 Voltage = 15V WLED1 Voltage = 15V WLED2 Voltage , WLED1 900 WLED2 60 800 700 50 0 10 20 30 40 50 IO - Total Output Current - mA , across WLED. Vin Iout_max + Ç' Ilim * Ip 2 Ç" h Viout (3) where Iout_max = , avoid flashing of the WLEDs. The soft start of the current sink circuit is disabled during the PWM Texas Instruments
Original
SLVS706
Abstract: WLED2 Voltage = 15V 1100 80 1200 K VALUE vs WLED CURRENT VI = 3.6V WLED1 Voltage = 15V WLED2 Voltage = 15V Efficiency - % VI = 3.3V K Value VI = 3.6V 70 VI = 4.2V 1000 WLED1 900 WLED2 , with two regulated current outputs for driving WLEDs. Each current output can be individually , voltage. It is equal to 330mV + voltage drop across WLED. Vin Iout_max + Ilim * Viout Ip 2 , avoid flashing of the WLEDs. The soft start of the current sink circuit is disabled during the PWM Texas Instruments
Original
Abstract: two regulated current outputs for driving WLEDs. Each current output can be individually programmed , of the WLEDs. The boost regulator runs at a 1.2-MHz fixed switching frequency to reduce output , EFFICIENCY vs TOTAL OUTPUT CURRENT 90 85 WLED1 Voltage = 15 V WLED2 Voltage = 15 V 20 25 K , (IOUT)] high enough to meet the forward voltage drops of the WLEDs. Specifically, at start up, the , to 330 mV + voltage drop across WLED. Vin Iout_max + Ç' Ilim * Ip 2 Ç" h Viout Texas Instruments
Original
SLVS625D ISO/TS16949

QFN-10

Abstract: TPS61150 regulated current outputs for driving WLEDs. Each current output can be individually programmed through , ) signal on the select pins or an analog voltage on the ISET pins, resulting in PWM dimming of the WLEDs. , EFFICIENCY vs TOTAL OUTPUT CURRENT 90 85 WLED1 Voltage = 15 V WLED2 Voltage = 15 V 20 25 K , (IOUT)] high enough to meet the forward voltage drops of the WLEDs. Specifically, at start up, the , across WLED. Vin Iout_max + Ilim * Ip 2 h Viout (3) Where: · · ·
Texas Instruments
Original
QFN-10 TPS61150DRCR TPS61150DRCT TPS61151DRCR TPS61151DRCT

202383A

Abstract: is good or not is not only determined by the WLED driver, but also by the selected WLEDs. AAT1451 , application using AAT1451/1405/1407 and AAT3110 to drive the WLEDs. AAT1451/1405 plus AAT3110 is used to , voltage output to drive multiple strings of series WLEDs. Four precision current sinks can provide , . External PWM signal is used to dim the WLED. For more detailed information on AAT3110 and AAT1451, please , integrates a boost (step-up) converter and provides 45V output for driving series WLEDs. Four precision
Skyworks Solutions
Original
202383A AAT1407 AAT1451/05/07
Abstract: = 3.6 V WLED1 Voltage = 15 V WLED2 Voltage = 15 V VI = 4.2 V 950 930 910 890 870 K VALUE vs WLED , WLEDs. Each current output can be individually programmed through external resistors. There is dedicated , the ISET pin, resulting in PWM dimming of the WLEDs. The boost regulator runs at 1.2 MHz fixed , frequency Viout = boost output voltage. It is equal to 330 mV + voltage drop across WLED. Vin Iout_max + , the PWM signal has to be high enough to avoid flashing of the WLEDs. The soft start of the current Texas Instruments
Original
SLVS625
Abstract: shorted WLEDs in one string. WLED mismatch typically does not create such large voltage difference among , Integrated with WLED Backlight Drivers Check for Samples: TPS65142 FEATURES 1 â'¢ â'¢ â'¢ â , 24 V WLED Backlight Input Range â'" Integrated 1.5 A/40 V MOSFET â'" Boost Output Tracks WLED , compact solution to the bias power and the WLED backlight in note-pc TFTLCD panels. The device features a , complete solution to driver up to 6 chains of WLEDs with 1000:1 ratio PWM dimming. All features are Texas Instruments
Original

boost regulator 9v output

Abstract: the WLED is turned on under cold temperature, and the forward voltages of the WLEDs exceed the , are several shorted WLEDs in one string. WLED mismatch typically does not create such large voltage , WLED Backlight Drivers Check for Samples: TPS65142 1 FEATURES Integrated Bias and Backlight Power , Discharge Function 150 mA Unity Gain VCOM Buffer 4.5 V to 24 V WLED Backlight Input Range ­ Integrated 1.5 A/40 V MOSFET ­ Boost Output Tracks WLED Voltage ­ Internal Compensation ­ External Current Setting
Texas Instruments
Original
boost regulator 9v output

OLED circuit details

Abstract: TPS61140 Figure 15. Figure 16. PWM MODE OVERCURRENT LIMIT (WLED+OLED) vs DUTY CYCLE 1200 Vin = 3 V , voltage. It is equal to the higher of either 330mV+Vout or 330mV+voltage drop across WLED. Vin Iout_max , the WLEDs. The soft start of the current sink circuit is disabled during the PWM dimming to improve , Diode 1.2 MHz PWM for WLED Driver PFM for OLED Supply Individually Programmable Output Input to , for driving the OLED sub display and WLED backlight for the LCD main display in clam shell phones
Texas Instruments
Original
TPS61140 TPS61141 OLED circuit details TPS61140DRCR TPS61140DRCT TPS61141DRCR SLVS624A TPS61140/1
Abstract: two regulated current outputs for driving WLEDs. Each current output can be individually programmed , WLEDs. The boost regulator runs at 1.2 MHz fixed switching frequency to reduce output ripple and avoid , 3.3 V VI = 3.6 V WLED1 Voltage = 15 V WLED2 Voltage = 15 V VI = 4.2 V 950 930 910 890 870 K VALUE , switching frequency Viout = boost output voltage. It is equal to 330 mV + voltage drop across WLED. Vin , of the WLEDs. The soft start of the current sink circuit is disabled during the PWM dimming to Texas Instruments
Original

HIGH POWER 1 WLED

Abstract: MIC4802 Evaluation Board High Efficiency 800mA Single Channel Linear WLED Driver with Ultra Fast , (WLED) driver. This constant current linear device is designed to drive a single high power WLED up to , the EN pin. This allows for full brightness of the WLED(s) (100% duty cycle). The EN pin can also be , output state. A pull up resistor of 10kâ"¦ is placed from EN (JP1) to VIN to ensure that the WLED is ON , corresponds to ILED of 830mA. 4. Measuring WLED current. To measure WLED current, simply insert an ammeter
Micrel Semiconductor
Original
HIGH POWER 1 WLED M9999-032111-B

VLP6810T-100M1R2

Abstract: MAX17127 strings of 10 surfacemount WLEDs. The EV kit uses a 5V to 26V input power supply and can be configured to provide an adjustable 10mA to 30mA full-scale LED current. Features S 5V to 26V Input Range S WLED , up to six strings of 10 surfacemount WLEDs. 2 , assembled with six strings of 10 WLEDs. Each string has an associated 3-pin header (JU1, JU8­JU12) and , assembled and tested surface-mount PCB that evaluates the highefficiency MAX17127 white LED (WLED) driver
Maxim Integrated Products
Original
VLP6810T-100M1R2 GRM31CR71H225K TQFN-ep 20 pcb footprint Q5 LED C1608X7R1H104K GRM188R71H104K MAX17127EVKIT NSSW008CT-P1 GRM1885C1H511J 06035A511JA12A LMK107BJ105KA GRM188R71A105K

LEMC3225

Abstract: LEM25 TSD WLED4 WLED5 WLED6 SUB WLED7 WLED8 ON/OFF RLED 800kI 800kI 2Hz TO 200Hz , 5 WLED1­WLED8, RGB (Note 4) Q10 10 1x mode 2.68 -0.5x mode 4.12 WLED_, RGB , GND SENSE WLED8 WLED7 WLED6 WLED5 ECA GND + Pin Description PIN NAME , external WLED. WLED3 is high impedance during shutdown. If unused, short WLED3 to PV3. F7 WLED4 , RESET = 1 OR EN = 0 OR MAIN WLED = 0 AND WLED5-8 = 0 AND RI2C, GI2C, BI2C = 0 EN = HIGH, RESET = 0
Maxim Integrated Products
Original
LEMC3225 LEM25 CADA32 pwm led driver RLED6 C2012X5R0J225 MAX8930 W493B3
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