sc4541 Semtech Corporation, sc4541 Datasheet - Page 3

• Manufacturer Part Number: sc4541
• Description: High Frequency Led Driver With Integrated Schottky And Simple Interconnect
• Manufacturer: Semtech Corporation

Absolute Maximum Ratings
Supply IN Voltage(V) . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to 26
SW Voltage, OUT Voltage(V) . . . . . . . . . . . . . . . . . -0.3 to 28
FB, Enable Voltage(V) . . . . . . . . . . . . . . . . . . . . . -0.3 to VIN +0.3
ESD Protection Level
Exceeding the above specifications may result in permanent damage to the device or device malfunction. Operation outside of the parameters
NOTES:
(1) Tested according to JEDEC standard JESD22-A114-B.
(2) Calculated from package in still air, mounted to 3 x 4.5(in), 4 layer FR4 PCB with thermal vias under the exposed pad per JESD51 standards.
Electrical Characteristics
V
specified in the Electrical Characteristics section is not recommended.
Parameter
Input Voltage
Supply Current
Shutdown Supply Current
EN Logic High Voltage
EN Logic Low Voltage
EN Logic Bias Current
Boost Converter Characteristics
Switching Frequency
Maximum Duty Cycle
Switch Current limit
Switch Leakage Current
Switch Saturation Voltage
OUT Over-Voltage Protection
Schottky Forward Drop
IN
=5V, C
IN
=1uF, C
OUT
=1uF, L=10uH, T
(1)
(kV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
A
= -40°C to 85°C, unless specified otherwise.
Symbol
I
V
EN(L),
I
IN(SHDN)
V
OUT(OVP)
V
D
I
I
V
V
V
f
LIMIT
IN(Q)
I
EN(H)
EN(L)
SW
MAX
SW
F(D)
SAT
IN
I
EN(H)
V
IN
=22V, V
Recommended Operating Conditions
Supply IN Voltage (V) . . . . . . . . . . . . . . . . . . . . . . . . . . 2.9 to 22
Maximum Output Voltage (V) . . . . . . . . . . . . . . . . . . . . . . . 25
Ambient Temperature Range (°C) . . . . . . . . . . . . -40 to +85
Thermal Information
Thermal Resistance, Junction to Ambient
Maximum Junction Temperature (°C) . . . . . . . . . . . . . +125
Storage Temperature Range (°C) . . . . . . . . . . . -65 to +150
Peak IR Reflow Temperature (10s to 30s) (°C) . . . . . . . +300
I
OUT
MLPD-UT6(°C/W) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
SOT23-6(°C/W) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
OUT
= 100mA, T
Conditions
V
I
=18V, V
SW
T
SW
EN=0V
A
=25°C
= 0.2A
= 18V
FB
A
=17V, EN=3V
=25°C
Min
25.5
260
2.9
1.6
84
2
Typ
350
200
1.5
2.0
0.1
0.7
(2)
Max
28.0
450
0.4
2.4
SC4541
22
3
1
1
5
Units
MHz
mA
mA
mV
µA
µA
µA
%
V
V
V
V
V
3