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STCF01 Datasheet(PDF) 7 Page - STMicroelectronics

Part # STCF01
Description  Step-up Converter for Cell Phone Camera Flash LEDs
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STCF01 Datasheet(HTML) 7 Page - STMicroelectronics

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


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