pca9901 NXP Semiconductors, pca9901 Datasheet - Page 3
pca9901
Manufacturer Part Number
pca9901
Description
One Wire Single Led Driver
Manufacturer
NXP Semiconductors
Datasheet
1.PCA9901.pdf
(27 pages)
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Manufacturer:
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NXP Semiconductors
6. Block diagram
PCA9901_1
Product data sheet
Fig 2.
CTRL
Block diagram of PCA9901
PCA9901
FILTER
INPUT
Rev. 01 — 3 December 2009
DIGITAL INTERFACE
GND
SEQUENCER
control
signals
DECODER
PATTERN
ON AND OFF
REGISTERS
COUNTERS
sequence
short/thermal disable
enable
ISET
OSCILLATOR
clock
LED CURRENT
400 : 1 RATIO
BAND GAP
CONTROL
V
bg(int)
One wire single LED driver
LEDOUT
V
DD
PCA9901
© NXP B.V. 2009. All rights reserved.
SHORT-CIRCUIT
PROTECTION
THERMAL
AND
V
002aac602
DD
3 of 27
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