参数资料
型号: PCA9551PW,118
厂商: NXP Semiconductors
文件页数: 17/26页
文件大小: 0K
描述: IC LED DRIVER BLINKER 16-TSSOP
标准包装: 2,500
拓扑: 开路漏极,PWM
输出数: 8
内部驱动器:
类型 - 主要: LED 闪烁器
频率: 400kHz
电源电压: 2.3 V ~ 5.5 V
安装类型: 表面贴装
封装/外壳: 16-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 16-TSSOP
包装: 带卷 (TR)
工作温度: -40°C ~ 85°C
配用: 568-4002-ND - DEMO BOARD I2C
其它名称: 935271692118
PCA9551PW-T
PCA9551PW-T-ND
NXP Semiconductors
PCA9551
8-bit I 2 C-bus LED driver with programmable blink rates
protocol
START
condition
(S)
t SU;STA
bit 7
MSB
(A7)
t LOW
t H IG H
bit 6
(A6)
1 /f
SCL
bit 0
(R/W)
acknowledge
(A)
STOP
condition
(P)
SCL
SDA
t BUF
t r
t f
t HD;STA
t SU;DAT
t HD;DAT
t VD;DAT
t VD;ACK
t SU;STO
002aab175
Rise and fall times refer to V IL and V IH .
Fig 21. I 2 C-bus timing diagram
12. Test information
V DD
open
PULSE
GENERATOR
V I
V DD
DUT
V O
RL
500 ?
V SS
RT
CL
50 pF
002aab880
R L = load resistor for LEDn. R L for SDA and SCL > 1 k ? (3 mA or less current).
C L = load capacitance includes jig and probe capacitance.
R T = termination resistance should be equal to the output impedance Z o of the pulse generators.
Fig 22. Test circuitry for switching times
PCA9551_8
? NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 08 — 31 July 2008
17 of 26
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