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PCA9901GD Datasheet(PDF) 3 Page - NXP Semiconductors

Part # PCA9901GD
Description  One wire single LED driver
PDF  27 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCA9901GD Datasheet(HTML) 3 Page - NXP Semiconductors

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PCA9901_1
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 01 — 3 December 2009
3 of 27
NXP Semiconductors
PCA9901
One wire single LED driver
6.
Block diagram
002aac602
PCA9901
ISET
LEDOUT
GND
VDD
INPUT
FILTER
DIGITAL INTERFACE
DECODER
CTRL
control
signals
sequence
ON AND OFF
COUNTERS
REGISTERS
PATTERN
SEQUENCER
OSCILLATOR
short/thermal disable
LED CURRENT
CONTROL
400 : 1 RATIO
enable
clock
BAND GAP
SHORT-CIRCUIT
AND
THERMAL
PROTECTION
VDD
Vbg(int)
Fig 2.
Block diagram of PCA9901



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