STLD20CP1 Datasheet, PDF (8/19 Pages) STMicroelectronics – Power management for white LED and camera flash

Electrical characteristics
STLD20CP1
Table 7.
Symbol
Electrical characteristics for STLD20CP1 (continued) (T_J = -40 °C to 85 °C, V_I = 3.4 V, C_I
= 2.2 µF, C_O1,2 = 2.2 µF, V_{O_SU} = 15 V, V_{O_CP} = 4 V, C_CP = 1 µF, C_{FB_SU} = 100 pF, L = 3.3
µH, DM1 = DM2 = 1.6 V, typ. values @ 25 °C, unless otherwise specified)
Parameter
Test conditions
Min. Typ. Max. Unit
V-DM1_L V-
DM2_L V-
TF_L
Low voltage threshold
V-SEL_L
I-DM1_L I-DM1_L leakage current
I-DM2_L I-DM2_L leakage current
I-TF_L I-TF_L leakage current
I-SEL_L I-SEL_L leakage current
Single-wire pulse dimming
V_I = 2.8V to 6V
V-DM1_L = 0V
V-DM2_L = 0V
V-TF_L = 0V
V-SEL_L = 0V
0.6
V
0.1
0.5
µA
0.1
0.5
µA
0.1
0.5
µA
0.1
0.5
µA
T_LO
Duration time of the low
pulse
T_HI
Duration time of the high
pulse
T_SHDN
Duration time to shut down
the current
Initial T_HI
Duration time required for
the first pulse
0.5
250
µs
0.5
µs
500
µs
50
µs
Flash section charge pump
VIF Voltage threshold
Flash mode
VIT Voltage threshold
Torch mode
V_{FB_CP} Feedback charge pump I_Torch = 100mA
V_{O_CP} Over voltage charge pump
Flash mode @ V_I ≥ 3V ⁽¹⁾
I_{O_CP} Max Max current charge pump _{Torch mode @ VI ≥ 3V (1)}
Flash section charge pump
V_I-0.6
V
V_I-0.6
V
150
mV
6
V
300
mA
130
I_Flash Accuracy current flash
V_I = 3.4V, R_FL = 1950Ω
-10
I_Flash Static line regulation
(LINE) ^{current flash}
K*V_IF/R_FL = I_Flash, V_I = 3.0V to
4.2V @ T_J = 25°C
-10
I_Torch Accuracy current torch V_IN = 3.4V, R_TH = 7800Ω
-10
I_Torch Static line regulation
(LINE) ^{current torch}
K*V_IT/R_TH = I_Torch,
V_I = 3.0V to 4.2V @ T_J = 25°C
-10
Thermal shutdown
10
%
10
%
10
%
10
%
T_SD Thermal shutdown
T_HS
Thermal shutdown
hysteresis
180
°C
20
°C
1. Guaranteed by design.
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