Ordering number : EN7885
LA9450CL
Overview
Features
Bi-CMOS IC
For Laser Diode
Pulse Driver IC
The LA9450CL is a pulse driver IC for laser diode that enables low voltage operation.
•
Two-power voltage design for low power consumption. Two-mode switching function of DC
(supplied from VCC1: 2.4V) and pulse luminescence (supplied from VCC2: 2.8V).
•
Low voltage (VCC1=2.0V min, VCC2=2.6V min) and low current consumption (ICC1=500µA) design.
•
Low saturation PNP driver is used for DC mode for the low VCEsat.
•
Small package ECSP3020-10 (size 3×2mm, pin pitch 0.65mm)
Function
•
Laser driver
•
Two-mode switching functions of DC and pulse luminescence
Specifications
Maximum Ratings
at Ta = 25°C
Parameter
Maximum supply voltage
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VCC max
Pd max
Topr
Tstg
For every 1°C rise in temperature over 25°C,
the power is reduced by a factor of 1.55mW/°C
-10 to +70
-40 to +125
°C
°C
Conditions
Ratings
4.5
150
Unit
V
mW
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"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
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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.
41107 MS IM B8-7514 No.7885-1/5
LA9450CL
Operating Condition
at Ta = 25°C
Parameter
Recommend supply voltage
Symbol
VCC1
VCC2
Operating supply voltage range
VCC1 opg
VCC2 opg
Conditions
Ratings
2.4
2.8
2.0 to 3.5
2.6 to 3.5
Unit
V
V
V
V
Electrical Characteristics
at Ta = 25°C, VCC1 = 2.4V, VCC2 = 2.8V, RL = 25Ω
Parameter
Supply current 1
DC mode
Supply current 2
Pulse mode
Supply current 3
Pulse mode
Output current
Current gain
Maximum output current Pulse
Maximum output current DC
Maximum output voltage Pulse
Maximum output voltage DC
Cont high level
Cont low level
SW High level
SW Low level
IIN Input resistance
* Rising edge time
* Falling edge time
*Cont falling edge delay time
*Cont falling edge delay time
Symbol
ICC11
ICC12
ICC21
ICC22
ICC31
ICC32
IOUT
Igain
IOUT maxP
IOUT maxD
VOUT maxP
VOUT maxD
Vcont H
Vcont L
VSW H
VSW L
RIN
tr
tf
Tondelay
Tofdelay
RL=10Ω, IOUT peak=40mA, 10→90%
RL=10Ω, IOUT peak=40mA, 90→10%
IOUT peak=55mA, cont 50%→Output 50%
IOUT peak=55mA, cont 50%→Output 50%
Conditions
min
IIN=0µA, Vcont=VCC2
VSW=0V, RL=∞
IIN=0µA, Vcont=VCC2
VSW=VCC2
IIN=500µA, Vcont=0V
VSW=VCC2
IIN=500µA, Vcont=0V
IIN=500µA, Vcont=0V
IIN=1200µA, Vcont=0V, RL=10Ω
IIN=1200µA, Vcont=0V, RL=10Ω
IIN=1000µA, Vcont=0V, VSW=VCC2
IIN=1000µA, Vcont=0V, VSW=0V
VCC1
VCC2
VCC1
VCC2
VCC1
VCC2
300
70
300
68
65
130
140
150
2.4
2.15
VCC2/2
-0.2
VCC1-0.7
-0.2
270
330
2.9
6.1
6.8
10.8
300
Ratings
typ
500
0.1
500
110
530
80
75
150
165
175
2.58
2.24
VCC2+0.2
0.4
VCC2+0.2
0.15
390
4.1
8.6
8.9
14.1
max
1500
5
670
150
710
93
85
170
210
210
mA
mA
V
V
V
V
V
V
Ω
ns
ns
ns
ns
µA
µA
µA
µA
µA
mA
mA
unit
* Design target value and no measurement is performed.
Package Dimensions
unit : mm (typ)
3291
Top View
Bottom View
10
0.3
1
0.65
3.0
6
0.05
5
(0.8)
(0.015)
0.8
SANYO : ECSP3020-10
0.05
(0.2)
2.0
0.3
No.7885-2/5
LA9450CL
Pin Assignment
1 NC
10 NC
2 IOUT
9 VCC1
3 VCC2
LC9450CL
8 NC
4 Cont
7 IIN
5 GND
6P/D SW
Top view
Block Diagram
NC
1
10
NC
IOUT
Pulse
2
Driver
DC
9
Driver
VCC1
VCC2
3
SW
8
NC
Cont
4
Current
Control
7
IIN
GND
5
6
P/D SW
No.7885-3/5
LA9450CL
Pin Functions
Pin
No.
1
2
Pin
Name
NC
IOUT
NC
This is a LD driver output terminal.
Pin Description
Equivalent Circuit
VCC2
VCC1
3
VCC2
This is a supply terminal for a pulse driver output. In DC
luminescence mode, voltage which is bigger than VCC1,
and flowing are available.
4
Cont
“Low” at pulse driver, and Iout output is ON.
VCC2
5
6
GND
P/D SW
This is a switching terminal for DC/Pulse.
(Low: DC, High: Pulse)
VCC2
7
IIN
This is a controlled current input terminal.
(Input resistance 330Ω)
VCC1
8
9
NC
VCC1
NC
This is a power supply terminal of a controlled circuit
and driver output at DC luminescence. This can be
connected to VCC2 to use as a common power supply.
10
NC
NC
330Ω
No.7885-4/5
LA9450CL
Test Circuit
1
IOUT
2
RL 25Ω
10Ω
10
VCC1
9
Pulse
Driver
DC
Driver
3
VCC2
4
0.1µF
SW
8
IIN
Current
Control
7
0.1µF
H
P/D SW
L
Cont
5
6
GND
Power supplies of IOUT drive current - Pulse mode: VCC2
DC mode: VCC1
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This catalog provides information as of April, 2007. Specifications and information herein are subject
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PS No.7885-5/5
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