Variable Divided Voltage Generator
for LCD Use
Overview
The LA5314 is a valiable diveded voltage generator IC for
multiple drive of LCD matrix.
Features
.
Power supply for variable bias LCD matrix. (1/5 to 1/20 bias
available by built-in resistances)
.
Five operational amplifiers to deliver 5 voltage outputs
.
Low current drain (1.6 mA typ)
.
Miniflat package for miniturization
Package Dimensions
unit : mm
3222-HSOP28
[LA5314]
SANYO : HSOP28
Specifications
Maximum Ratings
at Ta = 25 C
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
V
CC
max
V
CC
V
EE
38
V
Maximum output current
l
OUT
max
V0 to V4
*
25
mA
Allowable power dissipation
Pd max
600
mW
Operating temperature
Topr
20 to +75
C
Storage temperature
Tstg
30 to +150
C
Note: 1. Continuous operation (non breakdown) is guaranteed when operated at the maximum ratings shown above.
2. *The maximum output current is a value specified under the conditions otherwise specified separately.
Operating Conditions
at Ta = 25C
Parameter
Symbol
Conditions
Ratings
Unit
Supply voltage
V
CC
V
CC
V
EE
10 to 35
V
Output current
l
OUT
0, 1
V0, V1
0.5 to +10
mA
l
OUT
2, 3
V2, V3
10 to +10
mA
l
OUT
4
V4
15 to +0.5
mA
Note: 3. Set V
CC
and V
EE
so that |V0V1| and |V4| become 1V or greater.
Ordering number: EN5376
Monolithic Linear IC
LA5314
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
83096HA(II) No.5376-1/5
Operating Chararcteristics
at Ta = 25C, V
CC
V
EE
=
20 V, V
REF
=
V
CC
,
R
X
=
8R
Parameter
Symbol
Conditions
min
typ
max
Unit
Current drain
I
CC
, I
EE
V
CC
, V
EE
:V
CC
V
EE
= 20 V, R
X
= 8R
1.6
3
mA
Output voltage difference 1
Vd1
(V0 V1) (V1 V2)
30
+30
mV
Output voltage difference 2
Vd2
(V3 V4) (V4 V
EE
)
30
+30
mV
Output voltage ratio 1
Rb1
V0/(V0 V1)
11.64
12.00
12.36
--
Output voltage ratio 2
Rb2
V0/(V0 V2)
5.82
6.00
6.18
--
Output voltage ratio 3
Rb3
V0/V3
5.82
6.00
6.18
--
Output voltage ratio 4
Rb4
V0/V4
11.64
12.00
12.36
--
Internal resistnace ratio 1
8R
R
X
1 R
X
2
*
8
--
Internal resistance ratio 2
12R
R
X
1 R
X
3
*
12
--
Internal resistance ratio 3
14R
R
X
1 R
X
4
*
14
--
Internal resistance ratio 4
15R
R
X
1 V
IN
3
*
15
--
Resistance
R
R value when 0.6 V is applied across R
X
5 R
X
6 :
R
X
5 R
X
6
20
k
Load regulation 1
V0
V0: 0.2 mA < I
OUT
0 < +10.0 mA
20
+20
mV
Load regulation 2
V1
V1: 0.2 mA < I
OUT
1 < +10.0 mA
20
+20
mV
Load regulation 3
V2
V2: 10.0 mA < I
OUT
2 < +10.0 mA
20
+20
mV
Load regulation 4
V3
V3: 10.0 mA < I
OUT
3 < +10.0 mA
20
+20
mV
Load regulation 5
V4
V4: 10.0 mA < I
OUT
4 < +0.2 mA
20
+20
mV
Note* : Referenced to R between R
X
4 and V
IN
3
Pin Assignment
Allowable
power
dissipation,
Pd
max
--
W
Temperature, Ta -- C
Pd max -- Ta
T00025
LA5314
No.5376-2/5
Block Diagram
Note: Use the IC so that V
RX
1
^
V
RX
2
^
V
RX
3
^
V
RX
4 is obeyed.
LA5314
No.5376-3/5
Maximum Output Current Load Test Conditions
Output load resistances R1 to R10 are set in order that current of 30 mA max. are supplied to both source and sink sides when an
on-level input is applied to the inputs 1 or 2.
Input 2
Input 1
Unit (resistance:
, capacitance: F)
V
CC
V
EE
= 20 V, R
X
= 8R
C1 = 5 F, C2 = 10 F, C3 = 10 F, C4 = 5 F, C5 = 10 F, C6 = 33 F
TR1 to TR5:
2SA984 E or F rank
TR6 to TR11: 2SC2274 E or F rank
Input 1
Input 2
LA5314
No.5376-4/5
No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment,
nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or
indirectly cause injury, death or property loss.
Anyone purchasing any products described or contained herein for an above-mentioned use shall:
1
Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors
and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and
expenses associated with such use:
2
Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO
ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume
production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use
or any infringements of intellectual property rights or other rights of third parties.
This catalog provides information as of August, 1996. Specifications and information herein are subject to change without notice.
I
CC
V
CC
Supply voltage, V
CC
V
V
OUT
I
OUT
(Source side)
Output
voltage,
V
OUT
V
Output current, I
OUT
mA
Current
drain,
I
CC
m
A
V
OUT
I
OUT
(Sink side)
Output
voltage
,
V
OUT
V
Output current, I
OUT
mA
Output voltage ratio Ta
Output
voltage
dif
ference
,
Vd1,
Vd2
--
m
V
Output
voltage
ratio,
Rb1,
Rb4
Output
voltage
ratio,
Rb2,
Rb3
Ambient temperature, Ta C
LA5314
No.5376-5/5
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