SP7122AEB

更新时间： 2024-11-25 04:03:19

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SP7122AEB 数据手册

Solved by

SP7120/22

Evaluation Board Manual

•

LED Driver for common cathode parallel

connected LEDs

•

Ultra Low Dropout Voltage of 150mV

No EMI, no switching noise

Integrated current matching

PWM and Analog brightness control

Enable/Shutdown control

Shutdown current < 1µA

Small footprint SOT23-6 Package

_______________________________________________________________ DESCRIPTION

The SP712X driver’s family provides a simple solution for a matched current source for any

color common cathode LEDs. The common cathode connection allows the user to increase the

led power dissipation by having the cathodes heat sinked to the ground plane of the circuit

board. The SP7120 may drive two LEDs or one LED at twice the current with two channels

connected in parallel. The factory preset current values of 15mA (version A), 20mA (version B),

or 25mA (version C) per channel. The SP7122 has three channels with factory preset current

values of 15, 20, or 25mA and may drive three LEDs or one LED at three-times the current with

all channels connected in parallel. At shutdown mode (EN pin is LOW) the supply current drops

to .04uA typical. The SP712x drivers are available in a small footprint 6-pin SOT23-6 package.

__________________________________________________________ BOARD SCHEMATIC

SP7120 Eval Board Schematic

July19-07

SP7120-22 Evaluation Board Manual

12 3 4

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