FAN5333A Datasheet, PDF (4/11 Pages) Fairchild Semiconductor – High Efficiency, High Current Serial LED Driver with 30V Integrated Switch

Electrical Characteristics
Unless otherwise noted, V_IN = 3.6V, V_OUT = 20V, I_LED = 20mA, T_A = -40°C to 85°C, Typical values are at
T_A = 25°C, Test Circuit, Figure 3.
Parameter
Conditions
Min.
Typ.
Max. Units
Feedback Voltage
FAN5333A
99
110
121
mV
FAN5333B
299
315
331
mV
Switch Current Limit
Load Current Capability
Switch On-resistance
Quiescent Current
OFF Mode Current
Shutdown Threshold
V_IN = 3.2V
V_OUT ≤ 20V, V_IN = 3.2V
V_IN = 5V
V_IN = 3.6V
V_SHDN = 3.6V, No Switching
V_SHDN = 0V
Device ON
1.1
1.5
65
0.6
0.7
0.6
0.1
1.5
A
mA
Ω
Ω
mA
3
µA
V
Device OFF
0.5
V
Shutdown Pin Bias Current
Feedback Pin Bias Current
V_SHDN = 0V or V_SHDN = 5.5V
1
300
nA
1
300
nA
Feedback Voltage Line Regulation 2.7V < V_IN < 5.5V, V_OUT ≤ 20V
Switching Frequency
0.3
%
1.2
1.5
1.8
MHz
Maximum Duty Cycle
87
93
%
Switch Leakage Current
OVP
No Switching, V_IN = 5.5V
1
µA
15
%
Thermal Shutdown Temperature
150
°C
Test Circuit
V_IN
C_IN
10µF
L
10µH
5
VIN
SW ¹
BAT54
C_OUT
1µF
I_LED
3
FB
V_OUT
Electronic Load
R
ON
4 _SHDN
2
GND
OFF
Figure 3. Test Circuit
4
FAN5333A/FAN5333B Rev. 1.0.1
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