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| STCF01 Datasheet, PDF (7/16 Pages) STMicroelectronics – Step-up Converter for Cell Phone Camera Flash LEDs | |||
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STCF01
5 Electrical Characteristics
5 Electrical Characteristics
Table 4. DC Electrical Characteristics
(TJ = -40°C to 85°C, VI = 3.6V, CI = 2.2µF, CO = 4.7µF, L = 10µH, RLC = 12kâ¦, RHC = 4kâ¦,
VOVP = 8V, Typ. values @ 25°C, unless otherwise specified)
Symbol
Parameter
Test Conditions
General Section
VI
VUVLO
IQ
fSW
VOVP
IPKMax
Max Operation Supply Voltage
Under Voltage lockout threshold
Quiescent Current
Switching Frequency
Over Voltage Threshold
Maximum Inductor Current
VSEL= 0V, VSHDN = 0V,
Min. duty cycle
VSEL= 0V
Shutdown Mode
VSEL= 0V, VSHDN = 0V
No Load
VSHDN = 0V
Current Control
VHC
VLC
ILED/IHC
ILED/ILC
RONFB
IFB(LEAK)
HC Pin Voltage
LC Pin Voltage
High Level Current Multiplier
Low Level Current Multiplier
Resistance ON Feedback
Current Feedback Leakage
VSEL= 3V, VSHDN = 0V
VSEL= 0V, VSHDN = 0V
VSEL= 3V, VSHDN = 0V (25°C)
VSEL= 0V, VSHDN = 0V (25°C)
IFB = 100mA
VSHDN = 3V, VFB = VI
Switch Section
RON
ISW(LEAK)
DMAX
DMIN
Internal Switch ON-Resistance
Internal Switch Leakage Current
Maximum Duty Cycle
Minimum Duty Cycle
ISW = 1A Note: 1
VSHDN = 3V, VSW= 16.5V
IFB = 0mA
IFB = 200mA; VSEL = 0V
Pulse Skipping
Control Input Section
VH(SEL) SEL and SHDN Input High
VH(SHDN) Threshold
VL(SEL) SEL and SHDN Input Low
VL(SHDN) Threshold
VI = 2.6V
VI = 3.6V
VI = 5.5V
VI = 2.6V
VI = 3.6V
VI = 5.5V
Thermal Shutdown
TSD Thermal Shutdown
THS Thermal Shutdown Hysteresis
Note: 1 Typical value, not production tested
Min. Typ. Max. Unit
5.5 V
2.3 2.45 2.6 V
2.3
3 mA
0.1
0.5 µA
1.2
1.5
1.8 MHz
17
18
19
V
1.2
A
VI-0.65
VI-0.65
1900
2200
VI-0.6 VI-0.55 V
VI-0.6 VI-0.55 V
2100 2300 A/A
2400 2600 A/A
1.2
â¦
0.1
1
µA
0.3
â¦
0.1
1
µA
90
%
0
%
1.2
1.4
V
1.6
0.4
0.5 V
0.6
145
°C
15
°C
7/16
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