SC4509SKTRT Semtech, SC4509SKTRT Datasheet - Page 2

• Manufacturer Part Number: SC4509SKTRT
• Description: IC LED DRVR WT/OLED BCKLT SOT236
• Manufacturer: Semtech
• Type: Backlight, OLED, White LEDr

Specifications of SC4509SKTRT

• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Backlight
• Frequency: 1MHz ~ 1.4MHz
• Voltage - Supply: 2.7 V ~ 10 V
• Voltage - Output: 20V
• Mounting Type: Surface Mount
• Package / Case: SOT-23-6
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 30mA
• Internal Switch(s): Yes
• Efficiency: 81%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: SC4509SKTR

Exceeding the specifi cations below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specifi ed in the
Electrical Characteristics section is not implied. Exposure to Absolute Maximum rated conditions for extended periods of time may affect device reliability.
Unless specifi ed: V
© 2007 Semtech Corp.
Note:
1) Calculated from package in still air, mounted to 3”x 4.5”, 4 layer FR4 PCB with thermal vias under the exposed pad per JESD51 standards.
2) Tested in accordance to JEDEC standard JESD22-A114B.
Electrical Characteristics
POWER MANAGEMENT
Absolute Maximum Rating
Parameter
Input Supply Voltage
SW Voltage
Maximum Output Voltage
Feedback Voltage
EN/SS Voltage
Maximum Junction Temperature
Storage Temperature Range
Thermal Impedance
Junction to Ambient
Lead Temperature (Soldering), 10s (SOT23-6 package only)
Peak IR Flow Temperature, (10-40sec)
ESD Rating (Human Body Model)
Parameter
Input Voltage
Quiescent Current
Feedback Voltage
Feedback Pin Bias Current
Switching Frequency
Maximum Output Voltage
Switch Saturation Voltage
Maximum Duty Cycle
Switch Current Limit
Switch Leakage Current
Shutdown Current
PWM Dimming Frequency
EN/SS Threshold Low
EN/SS Threshold High
IN
= V
EN/SS
(1)
= 3.6V; C
(1)
IN
= 1μF; C
(2)
Symbol
OUT
V
V
D
= 0.22μF; L = 22μH; unless otherwise noted, T
I
f
I
V
I
f
V
CESAT
V
V
OSC
SHD
QFB
LKG
DIM
I
I
OUT
MAX
Q
cl
FB
IN
IH
IL
MLPD-W8
V
SOT23-6
EN/SS
= GND; V
V
I
SW
SW
I
LOAD
= 85mA; T
= 5V; V
Conditions
No switching
2
V
T
= 0; T
FB
A
=25 °C
IN
= GND
= 3V; V
OUT
A
=25 °C
A
=25 °C
= Open
Symbol
V
T
OUT
V
T
V
T
V
V
V
θ
EN/SS
T
LEAD
STG
PKG
OUT
ESD
SW
FB
JA
IN
J
A
= Open
= +25°C for Typ, -40ºC to 85°C for Min and Max.
Min
182
300
2.7
1.0
1.8
20
90
-0.3 to V
Maximum
-65 to +150
-0.3 to 20
-0.3 to 30
-0.3 to 20
125
165
300
260
30
78
2
0.01
Typ
199
500
2.6
1.2
160
35
IN
3
1
+ 0.3
PRELIMINARY
Max
216
100
300
700
3.3
1.4
5.0
10
10
50
5
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SC4509
Units
C/W
°C
°C
°C
°C
kV
Units
V
V
V
V
V
MHz
kHz
mA
mV
mV
mA
mV
nA
μA
μA
%
V
V
V