FAN5341 Fairchild Semiconductor, FAN5341 Datasheet - Page 5

• Manufacturer Part Number: FAN5341
• Description: Fan5341 Series Boost Led Driver With Integrated Schottky Diode And Single-wire Digital Interface
• Manufacturer: Fairchild Semiconductor

© 2009 Fairchild Semiconductor Corporation
FAN5341 • Rev. 1.0.0
Electrical Specifications
V
Power Supplies
EN: Enable Pin
Feedback and Reference
Power Outputs
Oscillator
Output and Protection
Notes:
1.
2.
3.
R
Symbol
IN
V
I
DS(ON)_Q1
V
SW(OFF)
I
V
V
V
D
= 2.7V to 5.5V and T
UVHYST
LIM-PK
D
T
T
R
T
T
V
V
f
I
V
T
UVLO
I
TLSC
THSC
SW leakage current includes the leakage current of 2 internal switches; SW to GND and SW to VOUT.
Not tested in production and guaranteed by design.
Application should guarantee that minimum and maximum duty cycle should fall between 20-85% to meet the specified
range.
SW
OVP
MAX
TSD
HYS
SD
FB
MIN
LO
SD
EN
FB
HI
IH
IL
Parameter
Shutdown Supply Current
Under-Voltage Lockout
Threshold
Under-Voltage Lockout
Hysteresis
HIGH-Level Input Voltage
LOW-Level Input Voltage
EN Pull-Down Resistance
EN Low Time for Dimming
Time Delay Between Steps
EN Low, Shutdown Pulse Width
Feedback Voltage
Feedback Input Current
Boost Switch On-Resistance
SW Node Leakage
Boost Switch Peak Current Limit
Boost Regulator Switching
Frequency
Boost Output Over-Voltage
Protection
OVP Hysteresis
V
Threshold
V
Threshold
Maximum Boost Duty Cycle
Minimum Boost Duty Cycle
Thermal Shutdown
Thermal Shutdown Hysteresis
OUT
OUT
Short Circuit Detection
Short Circuit Detection
A
= -40°C to +85°C unless otherwise noted. Typical values are at T
(1)
(2,3)
(2,3)
Conditions
EN = GND, V
V
V
V
V
V
I
2.7V ≤ V
V
V
V
EN = 0, V
V
V
V
V
LED
IN
IN
IN
IN
IN
FB
IN
IN
LED
IN
OUT
OUT
Rising
Falling
= 3.6V; See Figure 14
= 3.6V; See Figure 14
= 3.6V; from Falling Edge of EN
= 3.6V, I
= 2.7V, I
= 3.6V
= 253mV
= 20mA from -40°C to +85°C,
= 0
Falling
Rising
IN
IN
≤ 5.5V
= V
SW
SW
5
IN
SW
= 100mA
= 100mA
= 3.6V
= V
OUT
= 5.5V,
A
= 25°C and V
Min.
2.10
1.90
18.0
200
240
1.2
0.5
0.5
1.0
85
1
V
V
IN
IN
Typ.
2.35
0.30
2.15
18.9
250
300
253
600
650
750
150
0.1
0.1
1.2
0.8
35
– 1.4
– 1.2
IN
= 3.6V.
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Max.
0.75
2.60
2.40
21.0
400
300
266
0.4
1.0
2.0
1.4
20
Units
MHz
mV
mV
mΩ
mA
μA
kΩ
ms
μA
μA
°C
°C
µs
µs
%
V
V
V
V
V
V