XRP7620IH-F Exar Corporation, XRP7620IH-F Datasheet - Page 9

• Manufacturer Part Number: XRP7620IH-F
• Description: IC LED SINK DVR I2C 4CH 8DFN
• Manufacturer: Exar Corporation
• Type: Backlight, RGBA, RGBWr

Specifications of XRP7620IH-F

• Package / Case: 8-VFDFN Exposed Pad
• Number Of Outputs: 4
• Internal Driver: Yes
• Type - Primary: Backlight, General Purpose
• Type - Secondary: RGBA, RGBW
• Frequency: 400kHz
• Voltage - Supply: 2.7 V ~ 5.5 V
• Mounting Type: Surface Mount
• Current - Output / Channel: 31.5mA
• Internal Switch(s): Yes
• Efficiency: *
• Low Level Output Current: 31.5 mA
• Operating Supply Voltage: 2.5 V to 5.5 V
• Maximum Supply Current: 31.5 mA
• Maximum Operating Temperature: + 100 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 1016-1340 - EVAL BOARD FOR XRP7620
• Voltage - Output: -
• Operating Temperature: -
• Topology: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 1016-1341

Addressing and Writing Data
To write data to the XRP7620 one of the
following two cycles must be followed:
Easy shutdown/startup sequence
[Slave Address with write bit][Data for Status]
Full shutdown/startup sequence
[Slave
Status][Data for LED1][Data for LED2][Data
for LED3][Data for LED4]
Addressing and Reading Data
To read data from the XRP7620 the following
data cycle must be obeyed:
[Slave
Status][Data for LED1][Data for LED2][Data
for LED3][Data for LED4]
S
The XRP7620 can be placed in shutdown mode
by holding both the SDA and SCL lines low for
a minimum of typically 90ms. This puts a zero
in bit 7 and bit 6 of the status register, which
in turn will reset all bits of all registers. After
any shutdown, the part can only be restarted
through the I
© 2009 Exar Corporation
HUTDOWN
Address
Address
O
2
C bus.
PTIONS
with
with
write
read
4
4
-
-
bit][Data
bit][Data
C
C
h
h
a
a
n
n
n
n
e
e
l
l
A
for
for
A
d
d
j
j
9/11
u
u
s
s
t
t
a
a
S
If an LED shorts to the extent that the LED pin
comes within 0.7V of V
turn off because the drive circuitry effectively
is in a dropout condition.
will vary with programmed LED current.
P
The maximum programmable current per LED
pin is 31.5mA. If a higher current is desired,
2, 3, or all 4 LED pins may be connected to
share current.
possible to program the channels to different
values to add up to the desired total, it is
recommended that paralleled channels be
programmed
b
b
HORTED
ARALELLING
l
l
e
e
C
C
u
u
r
r
r
r
LED
e
e
n
n
t
t
C
S
I
I
URRENT
2
2
to
C
C
Although it is technically
C
C
o
o
IN
n
the
n
t
t
S
the LED channel may
r
r
INKS
o
o
The exact voltage
l
l
l
l
e
e
same
d
d
X
X
L
L
R
R
E
E
D
D
P
P
Rev. 1.0.0
7
7
D
D
value.
6
6
r
r
i
i
2
v
2
v
e
e
0
0
r
r