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參數(shù)資料
| 型號(hào)： | M66510 |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | LASER-DIODE DRIVER |
| 中文描述： | 激光二極管驅(qū)動(dòng)器 |
| 文件頁數(shù)： | 4/10頁 |
| 文件大?。?/td> | 224K |
| 代理商： | M66510 |
4
MITSUBISHI
DIGITAL ASSP
M66510P/FP
LASER-DIODE DRIVER
5. 1RO/2RO pin
The 1RO pin is used to connect the load resistor (RO1) for
current source 1 (I
L1
). The 2RO pin is used to connect the
load resistor (RO2) for current sources 2 (I
L2
) and 3 (I
L3
).
Connecting the load resistor between each pin and Vcc re-
duces IC internal power dissipation.
Set a resistance value so that each pin voltage does not go
down to 3.5V or less. In other words, set a value such as
meets the following expression:
RO1(RO2)[
]
≤
V
CC
– 3.5[V]
Maximum load current [A] flowing into RO1(RO2)
Ex: When V
CC
= 5V and maximum load current of each source is 60mA, RO1
and RO2 will be 25
or less.
6. Internal reset operation
The M66510 is provided with an internal reset circuit to pre-
vent overcurrent from flowing into the laser at the power-ON
time. The reset circuit operates within the range of V
CC
<
3.5V (standard) to turn off all the current sources.
7. V
CC
/GND pin
The power supply pins include V
CC1
, V
CC2
, GND1 and
GND2, each of which is as follows in terms of internal circuit:
V
CC1
/GND1: Connected to an analog circuit.
V
CC2
/GND2: Connected to a digital circuit.
In actual wiring, pay attention to the following:
(1) Make wiring width as wide as possible. Avoid redundant
wiring.
(2) Lay out an electrolytic capacitor for stabilizing voltage as
close to V
CC1
/GND1 as possible.
(3) Lay out a bypass capacitor as close to V
CC2
/GND2 as
possible.
Precaution for peripheral element wiring
Lay out the peripheral elements required for M66510 opera-
tion as close to M66510 as possible.
Method of calculating power dissipation
The power dissipation P of M66510 is given by the expres-
sion given below.
P = I
CC
×
V
CC
+ I
(1RO)
×
(V
(1RO)
– V
(LD)
) + I
(2RO)
×
(V
(2RO)
–
V
(LD)
) + I
OL(CO)
×
V
OL(CO)
where, V
(1RO)
: 1RO pin voltage
V
(2RO)
: 2RO pin voltage
I
(1RO)
: 1RO pin load current
I
(2RO)
: 2RO pin load current
V
(LD)
: LD pin voltage
I
OL(CO)
: CO pin “L” output current
V
OL(CO)
: CO pin “L” output voltage
For example, when V
CC
= 5.25V, V
(1RO)
= V
(2RO)
= 3.5V,
I
(1RO)
= I
(2RO)
= 60mA, V
(LD)
= 2.5V, I
OL(CO)
= 8mA and
V
OL(CO)
= 0.5V, the power dissipation at the laser-ON/OFF
time is as follows:
(1) Laser-ON time (DATA = “L”, I
CC
=26mA)
P
ON
=26
×
5.25 + 60
×
(3.5 – 2.5) + 60
×
(3.5 – 2.5) + 8
×
0.5
= 260.5(mW)
(2) Laser-OFF time (DATA = “H”, I
CC
= 44mA)
P
OFF
= 44
×
5.25 + 0 + 0 + 8
×
0.5 = 235(mW)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M66510FP | LASER-DIODE DRIVER |
| M66510P | LASER-DIODE DRIVER |
| M66512FP | LASER-DIODE DRIVER |
| M66512P | LASER-DIODE DRIVER |
| M66515FP | LASER-DIODE DRIVER/CONTROLLER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M66510FP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:LASER-DIODE DRIVER |
| M66510P | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:LASER-DIODE DRIVER |
| M66512FP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:LASER-DIODE DRIVER |
| M66512P | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:LASER-DIODE DRIVER |
| M66515 | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:LASER-DIODE DRIVER/CONTROLLER |
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