CAT3606HS4 datasheet(9/11 Pages) CATALYST

No. de pieza	CAT3606HS4

Descripción Electrónicos	6-Channel Low Noise Charge Pump White LED Driver

PDF	11 Pages

Scroll/Zoom	100%

Fabricante Electrónico	CATALYST [Catalyst Semiconductor]

Página de inicio	http://www.catalyst-semiconductor.com

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9 / 11 page

CAT3606

Doc. No. 5009, Rev. B

Characteristics subject to change without notice

RECOMMENDED LAYOUT

When the driver is in the 1.5x charge pump mode,

the 1MHz switching frequency operation requires

to minimize trace length and impedance to ground

on all 4 capacitors. A ground plane should cover the

area on the bottom side of the PCB opposite to the

IC and the bypass capacitors. Capacitors Cin and

Cout require short connection to ground which can

be done with multiple vias as shown on Figure 2. A

square copper area matches the QFN16 exposed

pad (GND) and must be connected to the ground

plane underneath. The use of multiple via will

improve the heat dissipation.

Figure 2: PCB Layout

TYPICAL CHARACTERISTICS

VIN = 3.6V, EN = VIN,

ENM = ENS = GND, C

IN = COUT = 1µF, TAMB = 25˚C, unless otherwise specified.

RSET Pin Voltage vs. Temperature

100

200

300

400

500

1x mode

1.16

1.18

1.20

1.22

1.24

-50

-25

100

125

TEMPERATURE [

°C]

OUTPUT CURRENT [mA]

Foldback Current Limiting

PWM Dimming at 1kHz on ENM and ENS

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