STCF02_07 Datasheet, PDF (7/19 Pages) STMicroelectronics – High power white led driver

STCF02
4 Characteristics
Characteristics
Table 5. Electrical characteristics
(All typical values are referred to T_A = 25°C, V_I = 3.6V)
Symbol
Parameter
Test Conditions
V_I
Input Operating Voltage
I_CC
V_UVLO Under voltage lockout threshold
Output Current Adjustment
Range, I_FLASH
I_O
Output Current Adjustment
Range, I_MFLASH
Output Current Adjustment
Range, I_TORCH
∆I_O
V_O
FB1,2
I_Q
f
Output current variation
Regulated voltage range
Feedback Voltage
Quiescent Current in Stand By
Frequency
e1
Efficiency
e2
I_PK
OVP
Inductor peak current
Over voltage protection
OTP Over temperature protection
OT_HYST Overtemperature hysteresis
NTC Voltage Reference
NTC_HYST Hysteresis
NTC_LEAK Voltage Reference leakage
EN1, EN2,
EN3
Logic signals level
I_ENx Enable input current
T_FL/TR
Transition time from PIN (Flash)
to PIN (Torch) (see Figure 11)
T_ON
Led current rise time I_LED = 0 to
I_LED = max (see Figure 13)
Torch mode
Medium flash mode
Flash mode
V_I rising
V_I falling
Flash mode for V_I = 2.7V to 4.5V
R_{FLASH_MIN}=1.6Ω to
R_{FLASH_MAX}=0.27Ω
Medium flash mode for V_I = 2.7V to
4.5V RM_{FLASH_MIN}=1.1kΩ to
RM_{FLASH_MAX}=500kΩ
Torch mode V_I = 2.7V to 4.5V
R_TORCH+R_FLASH=6.4Ω to
R_TORCH+R_FLASH=0.64Ω
Flash and medium flash mode ⁽¹⁾
Torch mode
Flash Mode
EN1=EN2=EN3=0
EN1=EN2=0 EN3=X (NTC ON)
V_I = 2.7V
Application Circuit Figure 2
V_I = 3.2 V to 4.2V, I_O=600mA
Application Circuit Figure 2
V_I = 3.2 V to 4.2V, I_O=25mA
V_I = 2.7V, I_O=600mA
V_I = 4.2V No load
V_I = 2.7V to 4.5V (Note: 1)
V_I = 2.7V to 4.5V (Note: 1)
V_I = 4V, I_NTC = 2mA max
EN1=EN2=0, EN3=X
Disable Low V_IL
Enable High V_IH
PIN (I_O=600mA) to PIN
(I_O=100mA) (Note: 1)
EN1=EN2=0 to EN1=0 & EN2=1
or EN1=EN2=1 (Note 1)
1. Not include tolerance of sensing resistor
Min.
2.7
616
590
555
5.1
5.1
100
25%
I_FLASH
25
2.5
150
78
72
5.2
1.4
Note: 1 Guaranteed by design
Typ.
686
688
660
Max. Unit
5.5 V
757
733 µA
728
5.3
V
5.3
600
I_FLASH mA
250
±10
%
±5
%
5.1 V
160 170 mV
1
3
µA
1.8
MHz
85
%
75
%
1.23
A
V
140
°C
20
°C
1.192
V
0.3
V
±1 µA
0.4
V
±1 µA
30 µs
2 ms
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