background image

Mouser Electronics

  

Authorized Distributor
 
  

Click to View Pricing, Inventory, Delivery & Lifecycle Information:

 
 
 
 

Analog Devices Inc.

 

 

  

DC1315A

Содержание 1315

Страница 1: ...ation the input voltage can be as high as 36V DC1315 allows LED string voltages up to 23V However some combinations of VIN VLED and ILED can result in the LT3475 1 getting hot Please consult the datasheet for thermal calcu lations and details The voltages the LED cur rent and the switching frequency can be ad justed for optimal thermal performance Design files for this circuit board are avail able...

Страница 2: ...omponents Q3 R13 and C7 to the circuit as shown in the datasheet Q3 is located on the back of the PCB near the PWM terminal The datasheet describes the calculation of maximum PWM dimming range with and without the ex tended dimming range components When these components are added to the circuit the PWM1 signal is directly connected to the extended dim ming range components If both channel 1 and ch...

Страница 3: ...e output and sets the open LED maximum output voltage Please note the zener diode in the boost path The 9V zener diode reduces the boost voltage by 9V from the LED output voltage A minimum of 3V is required on the boost voltage capacitor for proper operation Please consult the datasheet for details regarding the boost circuit in relation to the input voltage output voltage thermals and maximum rat...

Страница 4: ...HDN D1 1N4448W C7 220pF O PT R19 1k 1 UP TO 36V D2 1N4448W E7 GND C4 0 1uF C2 0 22uF 25V D8 22V Q2 OPT Si2318DS 1 5A D6 9 1V COUT1 2 2uF 50V VC2 Q4 MMBT3904 1 3 2 R18 100k R9 OPT 23V REF 600kHz R5 OPT R6 OPT R15 100k R16 10k VC1 R3 0 E8 LED1 E3 GND EXTENDED DIMMING RANGE Q1 OPT Si2318DS R14 OPT Q5 FMMT3904 1 3 2 OPTIONAL D5 9 1V D3 B240A R2 0 COUT2 2 2uF 50V VC2 R20 1k 1 E6 GND VC1 D4 B240A R4 OPT...

Страница 5: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Analog Devices Inc DC1315A ...

Отзывы: