CURRENT SOURCE SPECIFICATIONS |
ILED |
Current source accuracy |
ILED1 + ILED2, 3 V ≤ VIN ≤ 4.2 V, VOUT = 4.5 V |
900-mA flash current setting, per current source |
–7% |
1800 |
7% |
mA |
900-mA flash current setting, per current source –40°C ≤ TA ≤ 85°C |
–4% |
1800 |
4% |
28.125-mA torch current, per current source |
–10% |
56.2 |
10% |
28.125-mA torch current, per current source –40°C ≤ TA ≤ 85°C |
VOUT – VLED1/2 |
Current source regulation voltage |
ILED = 1.8 A (ILED1 + ILED2), VOUT = 4.5 V |
|
270 |
|
mV |
VOVP |
Output overvoltage protection trip point(3) |
ON threshold |
|
5 |
|
V |
ON threshold, –40°C ≤ TA ≤ 85°C |
4.925 |
|
5.075 |
OFF threshold |
|
4.88 |
|
STEP-UP DC-DC CONVERTER SPECIFICATIONS |
RPMOS |
PMOS switch on-resistance |
IPMOS = 1A |
|
80 |
|
mΩ |
RNMOS |
NMOS switch on-resistance |
INMOS = 1A |
|
80 |
|
mΩ |
ICL |
Switch current limit(4) |
3 V ≤ VIN ≤ 4.2 V |
Flash Duration Register bits [6:5] = 00 |
|
1.4 |
|
A |
3 V ≤ VIN ≤ 4.2 V –40°C ≤ TA ≤ 85°C |
1.2 |
|
1.6 |
3 V ≤ VIN ≤ 4.2 V |
Flash Duration Register bits [6:5] = 01 |
|
2.1 |
|
3 V ≤ VIN ≤ 4.2 V –40°C ≤ TA ≤ 85°C |
1.8 |
|
2.3 |
3 V ≤ VIN ≤ 4.2 V |
Flash Duration Register bits [6:5] = 10 |
|
2.7 |
|
3 V ≤ VIN ≤ 4.2 V –40°C ≤ TA ≤ 85°C |
2.4 |
|
3 |
3 V ≤ VIN ≤ 4.2 V |
Flash Duration Register bits [6:5] = 11 |
|
3.2 |
|
3 V ≤ VIN ≤ 4.2 V –40°C ≤ TA ≤ 85°C |
2.9 |
|
3.5 |
IOUT_SC |
Output short-circuit current limit |
VOUT < 2.3 V |
|
350 |
|
mA |
ILEDI/NTC |
Indicator current |
Register 0x12, bits[2:0] = 111, 2.7 V ≤ VIN ≤ 4.2 V VLEDI/NTC = 2 V, –40°C ≤ TA ≤ 85°C |
|
18 |
|
mA |
Register 0x12, bits[2:0] = 111, 2.7 V ≤ VIN ≤ 4.2 V VLEDI/NTC = 2 V |
16 |
|
20 |
VTRIP |
Comparator trip threshold |
Configuration register 1, bit [4] = 1, 3 V ≤ VIN ≤ 4.2 V |
|
1 |
|
V |
Configuration register 1, bit [4] = 1, 3 V ≤ VIN ≤ 4.2 V, –40°C ≤ TA ≤ 85°C |
0.97 |
|
1.03 |
ƒSW |
Switching frequency |
2.7 V ≤ VIN ≤ 5.5 V |
|
2 |
|
MHz |
2.7 V ≤ VIN ≤ 5.5 V, –40°C ≤ TA ≤ 85°C |
1.8 |
|
2.2 |
IQ |
Quiescent supply current |
Device not switching, VOUT = 3V |
|
650 |
|
µA |
Device switching, VOUT = 4.5V |
|
1.55 |
|
mA |
Indicate mode, Indicator Register bits [2:0] = 111 VLEDI/NTC = 2 V |
|
590 |
|
µA |
Indicate mode, Indicator Register bits [2:0] = 111 VLEDI/NTC = 2 V, –40°C ≤ TA ≤ 85°C |
|
|
750 |
ISHDN |
Shutdown supply current |
2.7 V ≤ VIN ≤ 5.5 V, –40°C ≤ TA ≤ 85°C |
HWEN = GND |
|
|
1 |
µA |
ISTBY |
Standby supply current |
2.7 V ≤ VIN ≤ 5.5 V |
HWEN = VIN, Enable Register bits [1:0] = 00 |
|
1.25 |
|
µA |
2.7 V ≤ VIN ≤ 5.5 V, –40°C ≤ TA ≤ 85°C |
|
|
2.4 |
VIN_TH |
VIN monitor threshold |
VIN Monitor Register = 0x01 |
|
2.9 |
|
V |
VIN Monitor Register = 0x01, –40°C ≤ TA ≤ 85°C |
2.85 |
|
2.95 |
VIN_FLASH_TH |
VIN flash monitor threshold |
VIN Monitor Register = 0x08 |
|
2.9 |
|
V |
VIN Monitor Register = 0x08, –40°C ≤ TA ≤ 85°C |
2.85 |
|
2.95 |
tTX |
Flash-to-torch LED current settling time |
TX_ Low to High ILED1 + ILED2 = 1.8A to 112.5mA |
|
20 |
|
µs |
tD |
Time from when ILED hits target until VLED data is available |
ADC Delay Register bit [5] = 1 |
|
16 |
|
µs |
ADC Delay Register bit [5] = 0 ADC Delay Register bits [4:0] = 0000 |
|
250 |
|
VF_ADC |
ADC threshold |
VLED Monitor Register bits [3:0] = 1111 |
|
4.6 |
|
V |
VLED Monitor Register bits [3:0] = 1111 –40°C ≤ TA ≤ 85°C |
4.4 |
|
4.8 |
HWEN, STROBE, TX1/TORCH/GPIO1, TX2/INT/GPIO2 VOLTAGE SPECIFICATIONS |
VIL |
Input logic low |
2.7 V ≤ VIN ≤ 5.5 V, –40°C ≤ TA ≤ 85°C |
0 |
|
0.4 |
V |
VIH |
Input logic high |
2.7 V ≤ VIN ≤ 5.5 V, –40°C ≤ TA ≤ 85°C |
1.2 |
|
VIN |
V |
RPD |
Internal pulldown resistance on TX1, TX2, STROBE |
|
|
300 |
|
kΩ |
I2C-COMPATIBLE VOLTAGE SPECIFICATIONS (SCL, SDA) |
VIL |
Input logic low |
2.7 V ≤ VIN ≤ 5.5 V, –40°C ≤ TA ≤ 85°C |
0 |
|
0.4 |
V |
VIH |
Input logic high |
2.7 V ≤ VIN ≤ 5.5 V |
1.3 |
|
VIN |
V |
VOL |
Output logic low (SDA) |
ILOAD = 3 mA 2.7 V ≤ VIN ≤ 5.5 V, –40°C ≤ TA ≤ 85°C |
|
|
0.4 |
V |