STCF06 Datasheet, PDF (11/33 Pages) STMicroelectronics – 1.5 A white LED driver with I²C interface

Electrical characteristics
6
Electrical characteristics
STCF06
Table 6. Electrical characteristics
(T_J = -40 to 85 °C, V_BAT = PV_BAT = 3.6 V, 2 x C_I = 10 µF, C_O = 10 µF, L = 1.5 µH, R_FL = 0.15 Ω, R_TR = 1 Ω,
R_X = 15 kΩ, typ. values are at T_J = 25 °C, unless otherwise specified).
Symbol
Parameter
Test condition
Min. Typ. Max. Unit
V_I Input operation supply voltage
2.7
5.5 V
V_{PW_ON} Power-ON reset threshold
RESET
V_I rising
2.3
V
I_O Output current adjustment
Flash mode for V_I = 3.5 V to 5.5 V
117
range I_FLASH
Flash mode for V_I = 3.0 V to 3.3 V
117
1500 mA
1300
Flash mode for V_I = 2.7 V to 5.5 V
117
1000
Output current adjustment
Torch mode V_I = 2.7 V to 5.5 V
29
370
range I_TORCH
Auxiliary LED output current Ready mode, V_I = 2.7 V to 5.5 V
adjustment range I_AUXLED
0
20
V_O Regulated voltage range
2.5
5.0 V
FB1 Feedback voltage
Torch mode
30
250 mV
FB2 Feedback voltage
Flash mode
30
250 mV
ΔI_O
R_{ON_}
I_Q
Output current tolerance
FB1-FB2 ON resistance
Quiescent current in
SHUTDOWN mode
Flash mode, I_O = 160 mV/R_FL
Torch mode, I_O = 200 mA
-10
10 %
90
mΩ
1
µA
Quiescent current in ready -
mode
1.8
mA
f_s
Frequency
V_I = 2.7 V
1.8
MHz
ν Efficiency of the chip itself
Note 2
V_I = 3.2 to 4.2 V, Flash Mode,
I_O = 2200 mA
80
%
Efficiency of the whole
V_I = 3.2 to 4.2 V, Flash Mode,
70
application Note 1
I_O = 2200 mA, V_O=V_{fLED_max} + V_FB2 =
5.02 V
See the typical application schematic
It is included losses of inductor and
sensing resistor
OVP Output over voltage protection V_I = 5.5 V, No Load
5.3
V
OV_HYST Over voltage hysteresis
V_I = 5.5 V, No Load
0.2
V
OTP Junction over temperature
protection
140
°C
OT_HYST Junction over temperature
hysteresis
20
°C
V_REF4 NTC hot voltage threshold
Ready mode, I_NTC = 2mA max
1.2
V
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