PCA9551D datasheet(2/26 Pages) NXP

2 / 26 page

PCA9551_8

Product data sheet

Rev. 08 — 31 July 2008

2 of 26

NXP Semiconductors

PCA9551

8-bit I2C-bus LED driver with programmable blink rates

I No glitch on power-up

I Supports hot insertion

I Low standby current

I Operating power supply voltage range of 2.3 V to 5.5 V

I 0 Hz to 400 kHz clock frequency

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: SO16, TSSOP16, HVQFN16

Ordering information

Block diagram

Table 1.

Ordering information

Tamb = −40 °C to +85 °C.

Type number

Topside

mark

Package

Name

Description

Version

PCA9551D

SO16

plastic small outline package; 16 leads; body width 3.9 mm

SOT109-1

PCA9551PW

PCA9551

TSSOP16

plastic thin shrink small outline package; 16 leads;

body width 4.4 mm

SOT403-1

PCA9551BS

9551

HVQFN16

plastic thermal enhanced very thin quad ﬂat package;

no leads; 16 terminals; body 4

× 4 × 0.85 mm

SOT629-1

Only one I/O shown for clarity.

Fig 1.

Block diagram of PCA9551

002aac504

I2C-BUS

CONTROL

INPUT

FILTERS

PCA9551

POWER-ON

RESET

SCL

SDA

VDD

VSS

LEDn

RESET

OSCILLATOR

PRESCALER 1

PRESCALER 0

PWM1

PWM0

INPUT

LED SELECT (LSn)

BLINK0

BLINK1

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