ADP1655-EVALZ Analog Devices Inc, ADP1655-EVALZ Datasheet
ADP1655-EVALZ
Specifications of ADP1655-EVALZ
Related parts for ADP1655-EVALZ
ADP1655-EVALZ Summary of contents
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... C-compatible interface enables the programmability of timers, currents, and status bit readback for operation monitoring and safety control. The ADP1655 comes in a compact 12-ball 0.5 mm pitch WLCSP package and is specified over the full −40°C to +125°C junction temperature range. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. ...
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... ADP1655 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Recommended Specifications: Input and Output Capacitance and Inductance ............................................................................. C-Compatible Interface Timing Specifications ..................... 5 Absolute Maximum Ratings ............................................................ 6 Thermal Data ................................................................................ 6 Thermal Resistance ...................................................................... 6 ESD Caution .................................................................................. 6 Pin Configuration and Function Descriptions ............................. 7 Typical Performance Characteristics ............................................. 8 Theory of Operation ...
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... I2C/ one LED, flash value setting = 15 (1111 binary) I2C/ two LEDs, flash value setting = (1010 to 1111 binary 320 mA to 500 mA LED 320 mA LED LED Flash typical, 400 mA LED current Torch 160 mA Rev Page ADP1655 Min Typ Max 2.7 2.3 2.4 50 100 = 2 4 ...
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... ADP1655 1 Parameter SAFETY FEATURES Thermal Shutdown Threshold T Rising J T Falling J Overvoltage Threshold Coil Peak Current Limit LED_OUT Short-Circuit Detection Comparator Reference Voltage LED Counting Comparator Threshold Voltage 1 All limits at temperature extremes are guaranteed via correlation using standard statistical quality control (SQC). ...
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... Rise time of SCL and SDA 300 ns Fall time of SCL and SDA 50 ns Pulse width of suppressed spike 400 pF Capacitive load for each bus line SU, DAT t t HIGH SU, STA t Sr HD, DAT 2 Figure 3. I C-Compatible Interface Timing Diagram Rev Page BUF HD, STA t SU, STO P S ADP1655 ...
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... Exposure to absolute maximum rating conditions for extended periods may affect device reliability. THERMAL DATA The ADP1655 may be damaged if the junction temperature limits are exceeded. Monitoring T does not guarantee that within the specified temperature limits. In applications with ...
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... Second Input Bit (EN2 mode, SDA is the data input/output of the I Clock Input (SCL). In 2-bit logic interface mode, SCL/EN1 is the first input bit of the digital interface. 2 First Input Bit (EN1 mode, SCL is the clock input of the I Rev Page ADP1655 2 C-compatible interface C-compatible interface. 2 C-compatible interface. ...
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... ADP1655 TYPICAL PERFORMANCE CHARACTERISTICS 600 500 400 300 200 100 0 2.7 3.2 3.7 4.2 INPUT VOLTAGE (V) Figure 5. Maximum Current vs. Input Voltage, One LED 450 400 350 300 250 200 150 100 50 0 2.7 3.2 3.7 4.2 INPUT VOLTAGE (V) Figure 6. Maximum Current vs. Input Voltage, Two LEDs; ...
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... IN 100 OUTPUT CURRENT (A) 14. Efficiency Two High Power White LEDs in LED 3. 3. 4.2V IN 100 OUTPUT CURRENT ( One High Power White LED LED IN Δ: 4µs = 10µF 20µs/DIV CHANNEL 5V/DIV OUT ) 0.2A/DIV CHANNEL 4 (TX_MASK) 5V/DIV HPLED 400 mA 3.2 V LED IN ADP1655 1000 Series 1k ...
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... ADP1655 L = FDSE0312-2R2M Δ: 260µ 10µF OUT 100µs/DIV CHANNEL 1 (IBAT) 1A/DIV CHANNEL 3 (V CHANNEL 0.2A/DIV CHANNEL 4 (TX_MASK) 5V/DIV HPLED Figure 17. Tx Masking Response, TX_MASK = 1 400 mA, V LED 200ms/DIV CHANNEL 0.1A/DIV CHANNEL 3 (SCL) 5V/DIV HPLED CHANNEL 2 (STROBE) 1V/DIV Figure 18. Assist Light and Flash, STROBE Edge Sensitive Mode, Two LEDs, ...
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... 3. 4.5V 415 IN 410 405 400 395 390 385 380 80 100 120 – 100 120 IN Rev Page ADP1655 5.5V IN – 100 TEMPERATURE (°C) Figure 26. LED Regulation, Set at 40 mA, Current Set Register = 001 (Binary 3. 3. 5.5V IN – 100 TEMPERATURE (°C) Figure 27 ...
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... ADP1655 THEORY OF OPERATION The ADP1655 is a high power, white LED driver ideal for driving white LEDs for use as a camera flash. The ADP1655 includes a boost converter and a current regulator suitable for powering one or two high power, white LEDs. The ADP1655 responds to a 2-pin control interface that can ...
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... read sequence of a single register. ADP1655 sends the data from the register denoted by the subaddress and increments the subaddress automatically, sending data from the next reg- ister until the master sends an I Output Current Figure 33 ...
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... Figure 33 Multiple Register Read Sequence Rev Page MASTER STOP ADP1655 RECEIVES DATA 0 ADP1655 RECEIVES ADP1655 RECEIVES DATA TO LAST REGISTER DATA TO REGISTER MASTER 1 = READ STOP ADP1655 SENDS DATA 0 0 ADP1655 SENDS ADP1655 SENDS DATA OF DATA OF LAST REGISTER REGISTER MASTER STOP MASTER STOP ...
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... STATE TRANSITIONS When the ADP1655 is in flash mode, the TX_MASK pin can be used to reduce the battery load. The device remains in flash mode, but the LED driver output current is reduced to the assist OUTPUT ON STROBE DISABLED MODE = FLASH OUTPUT ON STROBE = 1 EXTERNAL EN1 = 0 TORCH EN2 = 1 light level ...
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... ADP1655 REGISTER MAP The lowest bit number (0) represents the least significant bit, and the highest bit number (7) represents the most significant bit. Table 8. Design Information Register (Register 0x00) Bit R/W 7:0 R Table 9. Version Register (Register 0x01) Bit R/W 7:0 R Table 10. VREF and Timer Register (Register 0x02) ...
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... R TORCH not allowed 1 = TORCH allowed (default LED_OUT off (default LED_OUT STROBE disabled 1 = STROBE enabled (default) 1:0 R/W Configures LED output mode 00 = standby mode (default reserved 10 = assist light mode 11 = flash mode Rev Page ADP1655 ...
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... ADP1655 Table 13. Fault Information Register (Register 0x05) Bit R/W Description fault (default overvoltage fault (default short-circuit fault fault (default overtemperature fault fault (default timeout 850 ms fault 3 R one LED 1 = two LEDs (default Reserved fault (default current limit fault 0 R Reserved Table 14. Input Control Register (Register 0x06) ...
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... C mode, if strobe mode is enabled (Register 0x04, Bit 2), strobe is set to level sensitive mode (Register 0x04, Bit 5), and if strobe remains high for longer than 850 ms, the timeout fault bit, Register 0x05, Bit 4), is read back as high. The ADP1655 is disabled until the fault is cleared. OVERTEMPERATURE FAULT If the junction temperature of the ADP1655 rises above 150° ...
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... I CIN LOAD ( MAX ) minimize supply noise, place the input capacitor as close to the VIN pin of the ADP1655 as possible. As with the output capacitor, a low ESR capacitor is suggested. A list of suggested input capacitors is shown in Table 16. Table 16. Suggested Input Capacitors Vendor Murata TDK Tayio Yuden Selecting the Output Capacitor The output capacitor maintains the output voltage and supplies the LED current during NFET power switch on period ...
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... DC BIAS VOLTAGE (V) Figure 35. DC Bias Characteristic μF Ceramic Capacitor To guarantee the performance of the ADP1655 imperative that the effects of dc bias, temperature, and tolerances on the behavior of the capacitors be evaluated for each application. The peak-to-peak output voltage ripple for the selected output ...
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... Use a ground plane with several vias connecting to the component side ground to further reduce noise interfe- rence on sensitive circuit nodes INPUT CAPACITOR PGND ADP1655 INDUCTOR OUTPUT CAPACITOR Figure 36. Example Layout of the ADP1655 Driving Two White LEDs Rev Page PGND HIGH POWER LED HIGH POWER LED ...
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... OUTLINE DIMENSIONS 1.54 1.50 1.46 BALL A1 IDENTIFIER TOP VIEW (BALL SIDE DOWN) ORDERING GUIDE Model Temperature Range 1 ADP1655ACBZ-R7 –40°C to +125°C 1 ADP1655-EVALZ RoHS Compliant Part. 0.660 0.602 0.544 0.022 SEATING REF PLANE 2.04 0.330 2.00 0.310 1.96 0.290 0.04 MAX ...
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... ADP1655 NOTES ©2009 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D08028-0-5/09(0) Rev Page ...