SC4509SKTRT Semtech, SC4509SKTRT Datasheet - Page 5

• 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

© 2007 Semtech Corp.
POWER MANAGEMENT
Pin Descriptions
SOT23
N/A
1
2
3
4
5
6
MLPD 2X2
4, 5
2,3
1
8
7
6
T
Pin Name
EN/SS
VOUT
GND
VIN
SW
FB
Function
Cathode side of the Schottky output voltage. Connect a 0.22μF capacitor from this
pin to ground.
Ground connection
Feedback input pin. Connect a resistor from this pin to GND to program the LED
current.
Enable pin. When connected to logic high, the converter is enabled. When con-
nected to logic low, the converter is disabled. The LED brightness can be controlled
by applying a PWM signal to this pin.
Input voltage pin. Connect a 1μF capacitor from this pin to GND.
Switching pin - collector of the internal switch.
Exposed pad (bottom); connect to GND directly beneath package.
5
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