XRP7620 Exar Corporation, XRP7620 Datasheet - Page 3

• Manufacturer Part Number: XRP7620
• Description: 4-channel Adjustable Current I2c Controlled Led Driver
• Manufacturer: Exar Corporation

I
I
Unless otherwise indicated, V
Note 1: All parameters tested at T
Note 2: LED current matching is calculated by this equation:
© 2009 Exar Corporation
Thermal Shutdown Hysteresis
SDA, SCL Input Logic Low
Voltage
SDA, SCL Input Logic High
Voltage
SDA, SCL Timeout for Shutdown
Serial Clock Frequency
Bus Free Time between a STOP
and a START
Hold Time, Repeated START
Condition
STOP Condition Setup Time
Data Hold Time
Input Data Hold Time
Data Setup Time
SCL Clock Low Period
SCL Clock High Period
Rise Time of Both SDA and SCL
Signals, receiving
Fall Time of Both SDA and SCL
Signals, Receiving
Fall Time of SDA Transmitting
Pulse Width of Spike Suppressed
Capacitive Load for each Bus Line
I
clears
2
2
2
S
C Startup Time after UVLO
C S
C T
Start Condition
IMING
PECIFICATION
XRP7620
Address
I
LED
7-bit
Parameter
Parameter
I
AVG
−
I
C
AVG
HARACTERISTICS
×
R/W
100
1/0
%
Acknowledgement
sent by the slave
Where I
A
IN
= 2.7V to 4.6V, C
Status
A
Data
8-bit
=25 °C. Specifications over temperature are guaranteed by design.
t
t
AVG
Symbol
HD,DAT(OUT)
Min.
HD, DAT(IN)
1.6
t
t
t
HD_STA
SU, DAT
SU,STO
t
t
t
4
t
t
4
f
Cb
HIGH
t
LOW
F.TX
is the average current of 4 channels.
SCL
BUF
t
t
SRT
SP
R
F
-
-
C
C
h
h
A
a
a
20+0.1Cb
20+0.1Cb
20+0.1Cb
Typ.
n
n
15
90
Min.
LED1 Data
IN
225
100
Fig. 2: Data Input Format
Acknowledgement
- sent by the slave when R/W=0
- sent by master when R/W=1
1.3
0.6
0.6
1.3
0.6
n
n
0
0
= 1µF, T
e
e
8-bit
l
l
A
A
d
d
Max.
150
0.4
j
j
Typ.
3/11
A
u
u
= –40°C
s
s
A
t
t
a
a
LED2 Data
b
b
Units
l
l
ms
8-bit
Max.
e
°C
e
400
900
900
300
300
250
400
V
V
50
to 85°C, T
1
C
C
u
u
r
r
r
r
•
•
e
e
Units
A
KHz
n
n
ms
ms
ms
J
µs
µs
ns
ns
ns
ns
ns
ns
ns
pF
µs
Regulator turns on
= –40°C to 100°C.
t
t
LED3 Data
I
I
2
2
8-bit
Note 4,5
Note 4,5
Note 4,5, 6
Note 7
Note 4
Note 4
C
C
C
C
o
o
n
n
t
t
Conditions
A
r
r
o
o
Conditions
l
l
LED4 Data
l
l
e
e
8-bit
d
d
Stop Condition
X
X
L
L
R
R
E
E
D
D
P
P
Rev. 1.0.0
7
7
D
D
A
6
6
r
r
i
i
2
v
2
v
SP
e
e
0
0
r
r