STCF04TBR Datasheet, PDF (12/43 Pages) STMicroelectronics – High power white LED SuperCap™ driver with I²C interface

Electrical characteristics
6
Electrical characteristics
STCF04
T_A = 25 °C, V_IN = 3.6 V connected to V_BAT and P_VBAT, C_IN = 10 µF, C_SUP = 1.6F/5 V L = 1 µH,
R_X = 15 kΩ, V_FLED = 4.2 V/10 A. Unless otherwise specified, typical values are at 25 °C.
Table 6. Electrical characteristics
Symbol
Parameter
Test conditions
Min. Typ. Max. Unit
V_IN
V_{PW_ON}
RESET
I_O
V_ISENS
I_PEAK
V_OUT
I_MID
ΔI_O
I_Q
f_s
Operating input supply
voltage
Power-ON reset
threshold
V_IN rising
Output current
adjustment range
I_TORCH
Torch mode V_IN=2.7 V to 5.5 V
Auxiliary LED output
current adjustment
range I_AUXLED
Idle mode, V_I or V_O=3.3 V to 5.5 V
Current sensing input
V_IN=2.7 V to 5.5 V, I_LED = 12 A
R_FL = 10 mΩ
V_IN=2.7 V to 5.5 V, IDC0=0
Switch peak current limit
V_IN=2.7 V to 5.5 V, IDC0=1
Regulated voltage
range optimized for
Flash mode
V_IN=2.7 V to 5.5 V
Regulated voltage
range optimized for
Torch mode
V_IN=2.7 V to 5.5 V
V_OUT tolerance
Percentage with respect to
programmed voltage
Active balancing output V_IN=2.7 V to 5.5 V
Output current variation Torch mode I_LED = 300 mA
Quiescent current in
Shutdown mode
V_IN=2.7 to 5.5 V, NTC_ON=0
Quiescent current in
Shutdown mode
V_IN=2.7 to 5.5 V, NTC_ON=1
Quiescent current in
Monitoring mode
NTC_ON=0, SuperCap monitoring=1
Quiescent current in Idle
mode
NTC_ON, CHRG=0
Switching frequency
V_IN=2.7 V
2.5
5.5
V
2.3
V
15
320
mA
0
100
108 120
1.45
1.80
132 mV
A
4.5
5.5
V
V_FLED+
0.25
V
-5
-400
-10
+5
%
400 mA
10
%
1
2
µA
45
1
mA
1.8
MHz
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Doc ID 022927 Rev 3