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LP8555 датащи(PDF) 7 Page - Texas Instruments

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номер детали LP8555
подробное описание детали  LP8555 High-Efficiency LED Backlight Driver for Tablet PCs
PDF  64 Pages
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производитель  TI1 [Texas Instruments]
домашняя страница  http://www.ti.com
Logo TI1 - Texas Instruments

LP8555 датащи(HTML) 7 Page - Texas Instruments

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LP8555
www.ti.com
SNVS857 – FEBRUARY 2014
Electrical Characteristics
(1)(2) (continued)
Limits apply over the full ambient temperature range –40°C
≤ TA ≤ 85°C. Unless otherwise specified: VDD = 3.6 V, EN/VDDIO
= 1.8 V, L1 = L2 = 6.8 µH, CIN_A = CIN_B = 10 µF, COUT_A = COUT_B = 10 µF, CVLDO = 10 µF, CVDD = 1 µF.
(3)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Logic Input PWM/INT, FSET/SDA, ISET/SCL
VIL
Input low level
0.3 x
V
EN/VDDIO
VIH
Input high level
0.7 x
V
EN/VDDIO
II
Input current, VIO = 1.7 V to
-1.0
1.0
µA
5.5 V
Logic Output FSET/SDA, PWM/INT
VOL
Output low level
IPULL-UP = 3 mA
0.3
0.4
V
7.6 I
2C Serial Bus Timing Parameters (FSET/SDA, ISET/SCL)
MIN
TYP
MAX
UNIT
fSCL
Clock Frequency
400
kHz
1
Hold Time (repeated) START Condition
0.6
μs
2
Clock Low Time
1.3
μs
3
Clock High Time
600
ns
4
Setup Time for a Repeated START Condition
600
ns
5
Data Hold Time
50
ns
6
Data Setup Time
100
ns
7
Rise Time of SDA and SCL
20+0.1xCb
300
ns
8
Fall Time of SDA and SCL
15+0.1xCb
300
ns
9
Set-up Time for STOP condition
600
ns
10
Bus Free Time between a STOP and a START Condition
1.3
μs
Capacitive Load Parameter for Each Bus Line.
Cb
10
200
ns
Load of One Picofarad Corresponds to One Nanosecond.
tresponse
Delay from EN/VDDIO rising to I2C bus active
1
ms
Figure 1. I2C Timing Parameters
Copyright © 2014, Texas Instruments Incorporated
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