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NXP Semiconductors
PCA9550
2-bit I 2 C-bus LED driver with programmable blink rates
I ESD protection exceeds 2000 V HBM per JESD22-A114, 150 V MM per
JESD22-A115 and 1000 V CDM per JESD22-C101
I Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA
I Packages offered: SO8, TSSOP8 (MSOP8), HVSON8
3. Ordering information
Table 1.
Ordering information
Type number
Package
Name
Description
Version
PCA9550D
PCA9550DP
SO8
TSSOP8 [1]
plastic small outline package; 8 leads; body width 3.9 mm
plastic thin shrink small outline package; 8 leads; body width 3 mm
SOT96-1
SOT505-1
PCA9550TK
HVSON8
plastic thermal enhanced very thin small outline package; no leads; 8 terminals; SOT908-1
body 3 × 3 × 0.85 mm
[1]
Also known as MSOP8.
3.1 Ordering options
Table 2.
Ordering options
Type number
PCA9550D
PCA9550DP
PCA9550TK
4. Block diagram
PCA9550
A0
Topside mark
PCA9550
9550
9550
Temperature range
T amb = ? 40 ° C to +85 ° C
T amb = ? 40 ° C to +85 ° C
T amb = ? 40 ° C to +85 ° C
INPUT
REGISTER
SCL
SDA
INPUT
FILTERS
I 2 C-BUS
CONTROL
LED SELECT (LS0)
REGISTER
0
V DD
RESET
POWER-ON
RESET
PRESCALER 0
PWM0
1
BLINK0
LEDn
REGISTER
REGISTER
V SS
OSCILLATOR
PRESCALER 1
REGISTER
PWM1
REGISTER
BLINK1
002aad241
Only one I/O shown for clarity.
Fig 1.
PCA9550_5
Block diagram of PCA9550
? NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 05 — 13 October 2008
2 of 26
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