LM3410_08 Datasheet, PDF (3/32 Pages) National Semiconductor (TI) – PowerWise® 525kHz/1.6MHz, Constant Current Boost and SEPIC LED Driver with Internal Compensation

Pin Descriptions - 5-Pin SOT23
Pin Name Function
1
SW Output switch. Connect to the inductor, output diode.
2
GND
Signal and power ground pin. Place the bottom resistor of the feedback network as close as possible to this
pin.
3
FB Feedback pin. Connect FB to external resistor divider to set output voltage.
4
DIM
Dimming & shutdown control input. Logic high enables operation. Duty Cycle from 0 to 100%. Do not allow
this pin to float or be greater than VIN + 0.3V.
5
VIN Supply voltage pin for power stage, and input supply voltage.
Pin Descriptions - 6-Pin LLP
Pin
1
2
3
4
5
6
DAP
Name
PGND
VIN
DIM
FB
AGND
SW
GND
Function
Power ground pin. Place PGND and output capacitor GND close together.
Supply voltage for power stage, and input supply voltage.
Dimming & shutdown control input. Logic high enables operation. Duty Cycle from 0 to 100%. Do not allow
this pin to float or be greater than VIN + 0.3V.
Feedback pin. Connect FB to external resistor divider to set output voltage.
Signal ground pin. Place the bottom resistor of the feedback network as close as possible to this pin & pin
4.
Output switch. Connect to the inductor, output diode.
Signal & Power ground. Connect to pin 1 & pin 5 on top layer. Place 4-6 vias from DAP to bottom layer GND
plane.
Pin Descriptions - 8-Pin eMSOP
Pin
1
2
3
4
5
6
7
8
DAP
Name
-
PGND
VIN
DIM
FB
AGND
SW
-
GND
Function
No Connect
Power ground pin. Place PGND and output capacitor GND close together.
Supply voltage for power stage, and input supply voltage.
Dimming & shutdown control input. Logic high enables operation. Duty Cycle from 0 to 100%. Do not allow
this pin to float or be greater than VIN + 0.3V.
Feedback pin. Connect FB to external resistor divider to set output voltage.
Signal ground pin. Place the bottom resistor of the feedback network as close as possible to this pin & pin 5
Output switch. Connect to the inductor, output diode.
No Connect
Signal & Power ground. Connect to pin 2 & pin 6 on top layer. Place 4-6 vias from DAP to bottom layer GND
plane.
3
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