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Ordering number : EN5670
Monolithic Linear IC
LA5318V
Voltage-Dividing Voltage Generator
for Multi-Voltage LCD Matrix Drive
Overview
The LA5318V is a variable voltage-dividing voltage
generator IC designed for driving LCD matrixes that
require multiple voltages.
Package Dimensions
unit: mm
3179A-SSOP20
[LA5318V]
Ambient temperature, Ta – °C
SANYO: SSOP20
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Maximum output current
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VEE max
IOUT max
Pd max
Topr
Tstg
VCC – VEE
V1 to V4
Conditions
Ratings
36
Internal*
330
–20 to +75
–30 to +125
Notes: *The value stipulated in the conditions listed in the separate document shall be used as the maximum output current.
1. Continuous operation (without damage to the device) is guaranteed in the above ranges.
2. The output pins V1 to V4 may be shorted to the power supply or to ground for periods of up to 1 ms. (When |VCC – VEE| < 35 V)
Operating Conditions at Ta = 25°C
Supply voltage
Input voltage
Input current
Parameter
Output current
Symbol
VEE
VREF
IINR
IOUTR
IOUT1, 2
IOUT3,4
Conditions
VCC – VEE
VCC – VREF: VREF VEE
INR
OUTR
V1, V2
V3, V4
Note: VCC and VEE must be set up so that |V1| and |VEE – V4| are at least 1 V.
Ratings
–35.5 to –6
–35 to –6
–0.2 to 0
0 to 50
–5 to +5
–10 to +5
Unit
V
mA
mW
°C
°C
Unit
V
V
mA
mA
mA
mA
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
82097HA(OT) No. 5670-1/4

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LA5318V
Operating Characteristics at Ta = 25°C, VCC –VEE= –20 V, VREF = VEE, RX = 8R, BIN = OPEN
Parameter
Symbol
Conditions
Current drain
Output voltage ratio 1
Output voltage ratio 2
Output voltage ratio 3
Output voltage ratio 4
Output voltage ratio 5
Output voltage ratio 3
Internal resistance ratio 1
Internal resistance ratio 2
Internal resistance ratio 3
Internal resistance ratio 4
Resistance
Load regulation 1
Load regulation 2
Load regulation 3
Load regulation 4
Load regulation –1A
Load regulation –2A
Load regulation –3
Load regulation –4
Load regulation –1B
Load regulation –2B
OUTR pin saturation voltage
ICC, IEE
Ra1
Ra2
Rb1
Rb2
Rb3
Rb4
RX1
RX2
RX3
RX4
R
V1
V2
V3
V4
V1A
V2A
V3
V4
V1B
V2B
VOUTR
VCC – VEE= –20 V, RX = 8R, INR = VCC : VCC, VEE
V2/V1
(VREF – V3)/(VREF – V4)
VREF/V1
VREF/V2
VREF /(VREF – V3)
VREF /(VREF – V4)
RX1 – RX2
RX1 – RX3 Referenced to the resistance
RX1 – RX4 R between RX4 and VIN3
RX1 – VIN3
The value of R when the voltage across
RX4 and VIN3 is 0.5 V.
+0.1 mA < IOUT1 < +5 mA : V1
+0.1 mA < IOUT2 < +5 mA : V2
+0.1 mA < IOUT3 < +5 mA : V3
+0.1 mA < IOUT4 < +5 mA : V4
–0.5 mA < IOUT1 < –0.1 mA : V1
–0.5 mA < IOUT2 < –0.1 mA : V2
–10 mA < IOUT3 < –0.1 mA : V3
–10 mA < IOUT4 < –0.1 mA : V4
–5 mA < IOUT1 < –0.1 mA, BIN = GND : V1
–5 mA < IOUT2 < –0.1 mA, BIN = GND : V2
IOUT = 20 mA, VCC – INR = 2.7 : OUTR – VEE
Note: For IOUT, minus (–) indicates source current and plus (+) indicates sink current.
min
1.96
1.96
11.64
5.82
5.82
11.64
Ratings
typ
0.35
2.00
2.00
12.00
6.00
6.00
12.00
8
12
14
15
30
max
0.5
2.04
2.04
12.36
6.18
6.18
12.36
±20
±20
±20
±20
±20
±20
±20
±20
±20
±20
0.5
Unit
mA
k
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
V
Pin Assignment
Block Diagram
V1, V2 bias
control
VREF
control
(This circuit must be used with VRX1 VRX2 VRX3 VRX4.)
No. 5670-2/4

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LA5318V
Maximum Output Current Load Test Conditions
Input 1
Input 2
VCC – VEE = 35 V, RX = 8R, C1 to C4 = 10 µF, C5 = 33 µF, All resistors must be rated 1 W or higher.
TR1 to TR4; 2SA984 Rank E or F
TR5 to TR9; 2SC2274 Rank E or F
Set the output load resistors (R1 to R8) so that currents of 25 to 30 mA maximum (except for the V3 and V4 source
sides, which can handle about 60 mA) flow in the sink and source sides when high (on state) levels are input to inputs 1
and 2.
Input 1
Input 2
· VREF control block
Determining the TR1 drive current
I = VCC – VBE – VIN
11 k + R
(VBE 0.7 V)
Drive current
IO
10I
=
VCC
11
0.7
k+
– VIN
R
× 10
Assume that the TR1hFE is 50 for this calculation.
Note: Connect INR to VCC when INR and OUTR are not used.
No. 5670-3/4

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LA5318V
(Source side)
Supply voltage, VCC – V
(Sink side)
Output current, IOUT – mA
Output Voltage Ratio – Ta
Output current, IOUT – mA
Ambient temperature, Ta – °C
s 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.
s Anyone purchasing any products described or contained herein for an above-mentioned use shall:
ΠAccept 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:
 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.
s 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, 1997. Specifications and information herein are subject to
change without notice.
No. 5670-4/4