Datasheet

Data Sheet ADP1660
Rev. 0 | Page 3 of 28
SPECIFICATIONS
V
IN
1
= 3 . 6 V, T
J
= −40°C to +125°C for minimum/maximum specifications, and T
A
= 25°C for typical specifications, unless otherwise noted.
Table 1.
Parameter
2
Test Conditions/Comments Min Typ Max Unit
SUPPLY
Input Voltage Range 2.7 5.0 V
Undervoltage Lockout Threshold V
IN
falling 2.3 2.4 2.5 V
Undervoltage Lockout Hysteresis 50 100 150 mV
Shutdown Current, EN = 0 V
T
J
= −40°C to +85°C, current into VIN pin,
V
IN
= 2.7 V to 4.5 V
0.2 1 µA
Standby Current, EN = 1.8 V
T
J
= −40°C to +85°C, current into VIN pin,
V
IN
= 2.7 V to 4.5 V
3 10 µA
Operating Quiescent Current Torch mode, I
LED
= 100 mA 5.3 mA
SW Switch Leakage Current T
J
= −40°C to +85°C, V
SW
3
= 5 V 2 µA
T
J
= 25°C, V
SW
3
= 5 V 0.5 µA
LED DRIVER
LED Current
Assist Light, Torch Mode Current Assist light value setting = 0 (0 0000 binary) 0 mA
Assist light value setting = 16 (1 0000 binary) 200 mA
Flash Mode Current
Flash value setting = 0 (00 0000 binary)
0
mA
Flash value setting = 60 (11 1100 binary) 750 mA
LED Current Error per Channel I
LED
= 200 mA to 750 mA −5 ±1 +5 %
I
LED
= 100 mA to 187.5 mA −7 ±1 +7 %
I
LED
= 50 mA to 87.5 mA ±3 %
I
LED
= 25 mA to 37.5 mA
±6
%
I
LED
= 12.5 mA ±10 %
LED Channel Mismatch I
LED
= 275 mA to 750 mA 0.5 3 %
I
LED
= 137.5 mA to 262.5 mA 1 4 %
I
LED
= 25 mA to 125 mA 2 %
I
LED
= 12.5 mA 4 %
LED Current Source Headroom
Flash mode, I
LED
= 750 mA
290
mV
Torch mode, I
LED
= 200 mA 190 mV
LED1/LED2 Ramp-Up Time 0.6 ms
LED1/LED2 Ramp-Down Time 0.1 ms
SWITCHING REGULATOR
Switching Frequency Switching frequency = 3 MHz 2.8 3.0 3.2 MHz
Switching frequency = 1.5 MHz 1.4 1.5 1.6 MHz
Minimum Duty Cycle Switching frequency = 3 MHz 14 %
Switching frequency = 1.5 MHz
7
%
N-FET Resistance 60 mΩ
P-FET Resistance 50 mΩ
Voltage Output Mode
VOUT Voltage 4.575 5 5.425 V
Output Current 500 mA
Line Regulation
I
LOAD
at VOUT pin = 300 mA
0.3
%/V
Load Regulation −0.7 %/A
Pass-Through Mode Transition
Flash Mode
V
IN
to LED1/LED2, Entry I
LED1
= I
LED2
= 750 mA 580 mV
V
IN
to LED1/LED2, Exit I
LED1
= I
LED2
= 750 mA 435 mV
Torch Mode
V
IN
to LED1/LED2, Entry I
LED
= 200 mA 380 mV
V
IN
to LED1/LED2, Exit I
LED
= 200 mA 285 mV