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PDF LV5217GP Data sheet ( Hoja de datos )
| Número de pieza | LV5217GP | |
| Descripción | 3ch LED Driver | |
| Fabricantes | Sanyo Semicon Device | |
| Logotipo |  |
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Ordering number : ENA0833A
Bi-CMOS IC
LV5217GP 3ch LED Driver
Overview
This LV5217GP is 3-channel LED driver for cell phones. Each LED driver current can be adjusted by I2C bus.
LV5217GP can perform various illumination effects with a full-color LED display.
Features
• Three color LED driver circuits.
• The LED current can be switched independently in 7-bit units (0.31 to 25.48mA).
• Independent on/off control of the three LED drivers (independent control of the 3 RGB colors).
• Each LED drive current level can be adjusted independently over the I2C bus.
• Miniature package.
• Thermal shutdown circuit.
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Supply voltage 1
Supply voltage 2
Maximum input current
Maximum output current
STBY pin voltage
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VCC max
VDD max
VINB
IO max
VSTBY
Pd max
Topr
Tstg
Conditions
Mounted on the specified board *
The specified board * : 50mm × 40mm × 0.8mm glass epoxy (4-layer circuit board).
Ratings
6.0
6.0
6.0
30.0
6.0
0.55
-30 to +75
-40 to +125
Unit
V
V
V
mA
V
W
°C
°C
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer's products or
equipment.
O0610 SY/52307 MS PC 20070412-S00010 No.A0833-1/12
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LV5217GP
Continued from preceding page.
Pin No.
Symbol
Description
1 TEST
Test signal input.
This pin must be connected to ground.
VCC
TEST
13 STBY
GND
Standby mode pin.
The LV5217GP goes to standby mode when the
STBY pin is at the low level.
VCC
Equivalent circuit
50kΩ
50.5Ω
50kΩ
STBY
10kΩ
7 VCC
12 VDD
3 GND
Circuit system power supply
Power supply for Logic
Ground
GND
VDD
No.A0833-5/12
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LV5217GP
I2C bus transmission method
START condition and STOP condition
When transferring data over an I2C bus, SDA must basically be held in certain states while SCL is High, as shown in the
figure below.
SCL
SDA
ts2
th2
Both SCL and SDA are high when not performing data transfer.
When both SCL and SDA are high, changing SDA from high to low generates the START condition and starts access.
Changing SDA from low to high while SCL is high generates the STOP condition and ends access.
Start condition
SCL
Stop condition
SDA
th1
th3
Data transfer and confirmation response
After the START condition is generated, data is transferred one byte (8 bits) at a time. Data can be transferred
continuously for any number of bytes. The ACK signal is sent from the receiving to the transmitting side each time 8 bits
of data are transferred.
The transmitting side releases the SDA line immediately after the SCL clock pulse corresponding to the 8th data transfer
bit as it falls to Low, and the receiving side then sends the ACK signal by setting SDA Low.
After the receiving side sends the ACK signal, if the next byte transfer is still in receive mode, the receiving side releases
the SDA line at the falling edge of the 9th SCL clock.
The I2C bus does not have a CE signal, so instead a 7-bit slave address is assigned to each device. The first byte of each
transfer is assigned to this 7-bit slave address and a command (R/W) indicating the transfer direction of the following data.
Note that only Write mode is valid for this IC.
The 7-bit address is transferred in order from the MSB, and the 8th bit is Low to indicate Write mode.
The LV5217GP slave address is prescribed as “1110101.”
Start
M
S
Slave address
L
S
A
WC
M
S
Register address
L
S
A
C
M
S
B B KB
BKB
Data
LA
SC
BK
Stop
SCL
SDA
1110101
00000010 00010001
No.A0833-11/12
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| Páginas | Total 12 Páginas | |
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