SC5010 View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
SC5010
Semtech Corporation
'SC5010' PDF : 36 Pages View PDF
SC5010
Pin Descriptions (continued)
Pin #
20
21
22
23
24
25
26
27
28
PAD
Pin Name Pin Function
Regulated current sink LED channel 3 — connect this pin to the cathode of the bottom LED in string 3.
IO3
Connect pin to ground to disable this LED string.
Regulated current sink LED channel 2 — connect this pin to the cathode of the bottom LED in string 2.
IO2
Connect pin to ground to disable this LED string.
Regulated current sink LED channel 1 — connect this pin to the cathode of the bottom LED in string 1.
IO1
Connect pin to ground to disable this LED string.
Over-voltage feedback pin — over-voltage activated when pin exceeds 1.2V. Use a resistor divider tied to the
OVP
output and GND to set the OVP level.
Step-up (boost) switch current sense pin — Connect a resistor from this pin to ground for current sense - utilized
CS
in peak current mode control loop and over-current sense circuitry.
PGND
Power ground — tie this pin to the power ground plane close to input and output decoupling capacitors.
DRVN
Gate drive for the external step-up (boost) n-channel MOSFET.
DRVP
Gate drive for the external p-channel MOSFET disconnect switch.
Connect to the input power supply — accepts 4.5V - 27V input. Usually add 4.7μF or larger ceramic bypass capaci-
VIN
tor from this pin to ground.
Thermal pad for heat-sinking purposes — it is also AGND and should be connected to ground plane for proper
-
circuit operation.
13
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