ADP1650 Analog Devices, ADP1650 Datasheet - Page 9

• Manufacturer Part Number: ADP1650
• Description: 1.5 A LED Flash Driver with I2C-Compatible Interface
• Manufacturer: Analog Devices

Specifications of ADP1650

• Product Description: 1.5 A LED Flash Driver with I2C-Compatible Interface
• Led #: 1
• Led Configuration: Serial
• Topology: Inductive
• Application: Flash
• I2c Support: Yes
• Max Iout (ma): 1500mA
• Brightness Control: I2C
• Peak Efficiency (%): 90%
• Switching Frequency: 3MHz
• Over Volt Protection (v): 5.5V
• Vin Min (v): 2.7V
• Vout (v): 4.575 to 5.425
• Synchronous: Yes
• Package: 12-Bump WLCSP

Figure 13. Switching Frequency vs. Supply Voltage (3 MHz Mode)
2
3
4
1
3.04
3.03
3.02
3.01
3.00
2.99
2.98
2.97
2.96
2.95
2.94
CH2 2V
CH4
6
5
4
3
2
1
0
–40
GPIO1 (TxMASK1)
LED_OUT
2.7
I
I
BAT
LED
1V
V
V
V
Figure 14. Standby Current vs. Temperature
–20
3.0
IN
IN
IN
= 2.7V
= 3.6V
= 4.5V
Figure 12. Exit from TxMASK1 Mode
CH2
CH4 500mA Ω
3.3
0
1A Ω
3.6
TEMPERATURE (°C)
20
INPUT VOLTAGE (V)
3.9
M40µs
T
40
16%
4.2
60
4.5
A CH1
80
4.8
100
5.1
680mV
–40°C
+25°C
+85°C
+125°C
120
5.4
Rev. C | Page 9 of 32
1100
1010
1000
0110
0100
0010
0000
Figure 16. Voltage Regulation Mode Efficiency vs. Load Current
1111
1110
100
100
Figure 17. ADC External Voltage Mode Transfer Characteristic
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0
0
0.01
0.3
0
Figure 15. Flash Mode Efficiency vs. LED Current
V
V
V
V
50
IN
IN
IN
IN
= 2.7V
= 3.0V
= 3.6V
= 4.2V
0.5
100
150
ADC INPUT VOLTAGE (mV)
0.7
OUTPUT CURRENT (A)
200
LED CURRENT (A)
250
0.9
0.1
300
350
1.1
400
450
1.3
V
V
V
V
IN
IN
IN
IN
ADP1650
= 4.2V
= 3.6V
= 3.4V
= 3.2V
500
1.5
550
1