ADP1655 Analog Devices, ADP1655 Datasheet - Page 10

• Manufacturer Part Number: ADP1655
• Description: Dual LED Flash Driver with I2C Compatible Interface
• Manufacturer: Analog Devices

Specifications of ADP1655

• Product Description: Serial 2 WLED Flash Driver
• Led #: 2
• Led Configuration: Serial
• Topology: Inductive
• Application: Flash
• I2c Support: Yes
• Max Iout (ma): 400mA
• Brightness Control: I2C
• Peak Efficiency (%): n/a
• Switching Frequency: 2MHz
• Over Volt Protection (v): 10V
• Vin Min (v): 2.5V
• Vout (v): Current Output
• Synchronous: Yes
• Package: 12-Bump WLCSP

ADP1655
Figure 19. Assist Light and Flash, STROBE Level Sensitive Mode, Two LEDs,
Figure 18. Assist Light and Flash, STROBE Edge Sensitive Mode, Two LEDs,
1
2
3
4
1
2
3
1
2
3
CHANNEL 1 (IBAT) 1A/DIV
CHANNEL 2 (I
L = FDSE0312-2R2M
C
CHANNEL 1 (I
CHANNEL 2 (STROBE) 1V/DIV
CHANNEL 1 (I
CHANNEL 2 (STROBE) 1V/DIV
OUT
Figure 17. Tx Masking Response, TX_MASK = 1.8 V to 0 V,
Timer = 850 ms, I
= 10µF
HPLED
I
I
LED
LED
HPLED
HPLED
= 40 mA to 400 mA, V
= 40 mA to 400 mA, V
) 0.2A/DIV
) 0.1A/DIV
) 0.1A/DIV
LED
100µs/DIV
= 40 mA to 400 mA, V
200ms/DIV
200ms/DIV
CHANNEL 3 (V
CHANNEL 4 (TX_MASK) 5V/DIV
Δ: 260µs
CHANNEL 3 (SCL) 5V/DIV
CHANNEL 3 (SCL) 5V/DIV
IN
IN
= 3.2 V
= 3.6 V
OUT
IN
= 3.6 V
) 5V/DIV
Rev. 0 | Page 10 of 24
Figure 21. Coil Peak Current Limit vs. Temperature, Output Mode Register =
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1
–40
1.2
1.0
0.8
0.6
0.4
0.2
Figure 20. Line Transient, V
0
CHANNEL 1 (V
CHANNEL 2 (I
L = FDSE0312-2R2M
C
–40
OUT
Figure 22. Shutdown Current vs. Temperature vs. V
= 10µF
V
V
V
IN
IN
IN
–20
= 2.5V
= 3.6V
= 4.5V
–20
HPLED
IN
) 0.5V/DIV
00, 01, 10, and 11 (Binary)
) 20mA/DIV
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
100µs/DIV
IN
20
= 3.2 V to 3.6 V, I
20
40
40
LED
60
= 400 mA
60
V
V
V
IN
IN
IN
IN
= 3.2V
= 3.6V
= 4.2V
80
80