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AS3647 Datasheet(PDF) 4 Page - ams AG |
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AS3647 Datasheet(HTML) 4 Page - ams AG |
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4 / 38 page  www.austriamicrosystems.com/AS3647 1.5-4 3 - 37 AS3647/47B Datasheet, Confidential - P i n o u t Pin Description Table 1. Pin Description for AS3647 Pin Number Pin Name Description A1 VOUT1 DCDC converter output capacitor - make a short connection to CVOUT / VOUT2 A2 GND Power and analog ground; make a short connection between both balls A3 LED_OUT1 Flash LED current sink B1 SW1 DCDC converter switching node - make a short connection to SW2 / coil LDCDC B2 GND Power and analog ground; make a short connection between both balls C1 VOUT2 DCDC converter output capacitor - make a short connection to CVOUT / VOUT1 C2 SW2 DCDC converter switching node - make a short connection to SW1 /coil LDCDC C3 LED_OUT2 Flash LED current sink D1 SCL serial clock input for I 2C interface D2 VIN Positive supply voltage input - connect to supply and make a short connection to input capacitor CVIN and to coil LDCDC E1 SDA serial data input/output for I 2C interface (needs external pullup resistor) E2 STROBE Digital input with pulldown to control strobe time for flash function E3 TXMASK/ TORCH Function 1: Connect to RF power amplifier enable signal - reduces currents during flash to avoid a system shutdown due to parallel operation of the RF PA and the flash driver Function 2: Operate torch current level without using the I 2C interface to operate the torch without need to start a camera processor (if the I 2C is connected to the camera processor Table 2. Pin Description for AS3647B Pin Number Pin Name Description A1 VOUT1 DCDC converter output capacitor - make a short connection to CVOUT / VOUT2 A2 GND Power ground; make a short connection between both balls A3 LED_OUT1 Flash LED current sink B1 VOUT2 DCDC converter output capacitor - make a short connection to CVOUT / VOUT1 B2 SW2 DCDC converter switching node - make a short connection to SW1 /coil LDCDC B3 GND Power ground; make a short connection between both balls C1 SW1 DCDC converter switching node - make a short connection to SW2 / coil LDCDC C2 SW3 DCDC converter switching node - make a short connection to SW3 /coil LDCDC C3 LED_OUT2 Flash LED current sink D1 SCL serial clock input for I 2C interface D2 GNDA Analog ground - internally connected to GND ball A2; for improving thermal performance connect to ground plane (optional) D3 VIN Positive supply voltage input - connect to supply and make a short connection to input capacitor CVIN and to coil LDCDC E1 SDA serial data input/output for I 2C interface (needs external pullup resistor) |
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