lv8095lq Sanyo Semiconductor Corporation, lv8095lq Datasheet - Page 3

• Manufacturer Part Number: lv8095lq
• Description: For Vcms Constant-current Driver Ic
• Manufacturer: Sanyo Semiconductor Corporation

Pin Assignment
Block Diagram
Notes on use
• Determine the preset current value using the resistor between RFG and GND according to the formula above.
• The recommended RF value is 1 Ω .
GND
PD
8
1
Wiring resistance (thick line) around the RF is added to the resistance of RF as an error. It must be kept as small as
possible.
C
U
P
0.1µF
V CC
V DD
SDA
SCL
PD
Formula for calculating constant current : I OUT = 0.1 ÷ RF
RFG
SCL
7
2
(Top View)
USLP8
I
OUT
SDA
IF
2
C
6
3
V DD
V CC
DECODE
5
4
I
2
C
LV8095LQ
*1 : The voltage applied to the V DD pin must be set to the same
*2 : Setting the PD pin to low level powers down and resets the IC.
Reference
GND
level as those of the SDA, SCL and PD input high-level
voltages.
Set this pin temporarily to low level, then to high level after
power-on, and keep it to high level (same voltage level as
V DD ) during normal operation.
If, for instance, I OUT is to be set to 100mA max :
RF = 0.1 ÷ (100mA)
RF = 1Ω
voltage
current
setting
8 bits
DAC
Pin No.
1
2
3
4
5
6
7
8
Voltage drop protection
thermal protection
Pin Name
GND
RFG
OUT
V CC
V DD
SDA
SCL
PD
+
-
&
Ground
Current sensing resistor connection
Output pin
Analog system power supply
Logic system power supply *1
I
I
Power-down & reset *2
2
2
C SDA input
C SCL input
RF
1Ω
Pin Description
RFG
VCM
OUT
No.A0919-3/8