SC5010H View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
SC5010H
Semtech Corporation
'SC5010H' PDF : 36 Pages View PDF
SC5010H
Pin Descriptions (continued)
Pin #
20
21
22
23
24
25
26
27
28
PAD
Pin Name Pin Function
IO3
Regulated current sink LED channel 3 — connect this pin to the cathode of the bottom LED in string 3.
Connect pin to ground to disable this LED string.
IO2
Regulated current sink LED channel 2 — connect this pin to the cathode of the bottom LED in string 2.
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.
OVP
Over-voltage feedback pin — over-voltage activated when pin exceeds 1.23V(typ). Use a resistor divider tied to
the output and GND to set the OVP level.
CS
Step-up (boost) switch current sense pin — Connect a resistor from this pin to ground for current sense - utilized
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.
VIN
Connect to the input power supply — accepts 4.5V - 27V input. Usually add 4.7µF or larger ceramic bypass capaci-
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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