Datasheet SG120 Datasheet (LINFINITY)

SG120

NEGATIVE FIXED VOLTAGE REGULATOR

DESCRIPTION

The SG120 series of negative regulators offer self-contained, fixed-voltage
capability with up to 1.5A of load current. With a variety of output voltages and four
package options this regulator series is an optimum complement to the SG7800A/
7800/120 line of three terminal regulators.

All protective features of thermal shutdown, current limiting, and safe-area control
have been designed into these units and since these regulators require only a
single output capacitor or a capacitor and 5mA minimum load for satisfactory
performance, ease of application is assured.

Although designed as fixed-voltage regulators, the output voltage can be in­creased through the use of a simple voltage divider. The low quiescent drain
current of the device insures good regulation when this method is used, especially
for the SG120 series. Utilizing an improved Bandgap reference design, problems
have been eliminated that are normally associated with the zener diode refer­ences, such as drift in output voltage and large changes in the line and load
regulation

These devices are available in TO-257 (hermetically sealed TO-220), both
isolated and non-isolated), TO-3, TO-39 and TO-66 power packages.

SCHEMATIC DIAGRAM

FEATURES

••

• Output current to 1.5A

••

••

• Excellent line and load regulation

••

••

• Foldback current limiting

••

••

• Thermal overload protection

••

••

• Voltages available: -5V, -12V, -15V

••

••

• Voltages Not Recommended For New

••

Designs: -5.2V, -8V, -18V, -20V

••

• Contact factory for other voltage

••

options

HIGH RELIABILITY FEATURES

- SG120

♦♦

♦ Available to MIL-STD - 883

♦♦
♦♦

♦ Radiation data available

♦♦
♦♦

♦ LMI level "S" processing available

♦♦

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SG120

ABSOLUTE MAXIMUM RATINGS (Note 1)

Device Input Voltage Differential

Output Voltage Input Voltage (Output shorted to ground)

-5V -35V 35V

-5.2V -35V 35V

-8V -35V 35V

-12V -35V 35V

-15V -40V 35V

-18V -40V 35V

-20V -40V 35V

NEGATIVE REGULATOR

Operating Junction Temperature

Hermetic (K, R, IG - Packages) ...................................

Note 1. Values beyond which damage may occur.

150°C

THERMAL DATA

K Package:

Thermal Resistance­Thermal Resistance-

R Package:

Junction to Case, θ
Junction to Ambient, θ

................. 3.0°C/W

JC

............... 35°C/W

JA

Thermal Resistance-Junction to Case, θJC................. 5.0°C/W

Thermal Resistance-Junction to Ambient, θJA.............. 40°C/W

T Package:

Thermal Resistance-Junction to Case, θJC.................. 15°C/W

Thermal Resistance-Junction to Ambient, θJA............ 120°C/W

IG Package:

Thermal Resistance-Junction to Case, θJC................. 3.5°C/W

Thermal Resistance-Junction to Ambient, θJA.............. 42°C/W

L Package:

Thermal Resistance-Junction to Case, θJC.................. 35°C/W

Thermal Resistance-Junction to Ambient, θJA............ 120°C/W

RECOMMENDED OPERATING CONDITIONS (Note 2)

Operating Junction Temperature Range:

SG120 ...........................................................

-55°C to 150°C

Storage Temperature Range ...........................

-65°C to 150°C

Lead Temperature (Soldering, 10 Seconds) .................

Note A. Junction Temperature Calculation: TJ = TA + (PD x θJA).
Note B. The above numbers for θ

resistance of the package in a standard mounting configuration.
The θJA numbers are meant to be guidelines for the thermal
performance of the device/pc-board system. All of the above
assume no ambient airflow.

are maximums for the limiting thermal

JC

300°C

Note 2. Range over which the device is functional.

CHARACTERISTIC CURVES

FIGURE 1.
MAXIMUM AVERAGE POWER DISSIPATION

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FIGURE 2.
QUIESCENT CURRENT VS. LOAD

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FIGURE 3.
TEMPERATURE COEFFICIENT

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SG120

CHARACTERISTIC CURVES (continued)

NEGATIVE REGULATOR

FIGURE 4.
SHORTCIRCUIT CURRENT VS. V

APPLICATIONS

IN

FIGURE 7.
DROPOUT CHARACTERISTICS

FIGURE 5.
QUIESCENT CURRENT VS. V

FIGURE 6.

IN

FIGURE 8.
RIPPLE REJECTION VS. FREQUENCY

SHORT CIRCUIT CURRENT VS. V

IN

FIGURE 9 - FIXED OUTPUT REGULATOR

NOTE: 1. C1 is required only if regulator is separated from rectifier filter.

2. Both C1 and C2 should be low E.S.R. types such as solid
tantalum. If aluminum electrolitics are used, at least 10 times
values shown should be selected.

3. If large output capacities are used, the regulators must be

NOTE: C3 optional for improved transient response and ripple

FIGURE 10 - CIRCUIT FOR INCREASING OUTPUT VOLTAGE

rejection.

R1 + R

2

V

= V (REGULATOR)

OUT

R

1

R2 =

V(REG)

15mA

protected from momentary input shorts. A high current diode
from output to input will suffice.

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SG120

-5.0V & -5.2V NEGATIVE REGULATOR

ELECTRICAL CHARACTERISTICS (Note 1)

SG120-05

(Unless otherwise specified, these specifications apply over full operating ambient temperatures for SG120-05 with -55°C ≤ TA ≤ 150°C, and
V

= -10V, IO = 5mA, CIN = 2mF, C

IN

to the ambient temperature.)

Parameter

Output Voltage
Line Regulation (Note 1)
Load Regulation (Note 1)

Total Output Voltage

Tolerance

Quiescent Current
Quiescent Current Change

Dropout Voltage
Peak Output Current
Short Circuit Current
Ripple Rejection

Output Noise Voltage (rms)
Long Term Stability
Thermal Shutdown

= 1.0mF. Low duty cycle pulse testing techniques are used which maintains junction and case temperature equal

OUT

Test Conditions

TJ = 25°C
V

= -7V to -25V, TJ = 25°C

IN

Power Pkgs: IO = 5mA to 1.5A, TJ = 25°C
T - Pkg: IO = 5mA to 500mA, TJ = 25°C

SG120-05

Min. Typ. Max.

-5.1

-5.0

-4.9
10
50
30

VIN = -7.5V to -25V

Power Pkgs: I
T - Pkg: I

VIN = -7V to -25V

= 5mA to 1.5A, P ≤ 20W

O

= 5mA to 500mA, P ≤ 2W

O

With Line: VIN = -7V to -25V, TJ = 25°C

-4.8

-4.8

-5.0

-5.2

0.4

-5.2

-5.0

With Load: TJ = 25°C

Power Pkgs: IO = 5mA to 1.5A
T - Pkg: IO = 5mA to 500mA

0.4

0.4

∆VO = 100mV, TJ = 25°C

2.3

1.5

0.5

54

1.1

3.3

1.4

1.2

0.6

25
20

175

Power Pkgs: IO = 1.0A, T - Pkg: IO = 500mA
Power Pkgs: TJ = 25°C
T - Pkg: TJ = 25°C
Power Pkgs: VIN = -35V, TJ = 25°C
T - Pkg: VIN = -35V, TJ = 25°C
∆VIN = 10V, f = 120Hz, TJ = 25°C
f = 10Hz to 100KHz (Note 2)
1000hrs. at TJ = 125°C
IO = 5mA

25
75
50

80

Units

V
mV
mV
mV

V

V

2

mA
mA

mA
mA

V

A

A

A

A

dB

µV/V

mV

°C

SG120-5.2

(Unless otherwise specified, these specifications apply over full operating ambient temperatures for SG120-5.2 with -55°C ≤ TA ≤ 150°C, and
VIN = -10V, IO = 5mA, CIN = 2mF, C
to the ambient temperature.)

Parameter

Output Voltage
Line Regulation (Note 1)
Load Regulation (Note 1)

Total Output Voltage

Tolerance

Quiescent Current
Quiescent Current Change

= 1.0mF. Low duty cycle pulse testing techniques are used which maintains junction and case temperature equal

OUT

Test Conditions

TJ = 25°C
VIN = -7.2V to -25V, TJ = 25°C
Power Pkgs: IO = 5mA to 1.5A, TJ = 25°C
T - Pkg: IO = 5mA to 500mA, TJ = 25°C

SG120-5.2

Min. Typ. Max.

-5.1

-5.2

-5.3

15

25

50

75

30

50

VIN = -7.7V to -25V

-5.0

-5.2

-5.2

-5.4

-5.4
2

0.4

Power Pkgs: IO = 5mA to 1.5A, P ≤ 20W

T - Pkg: IO = 5mA to 500mA, P ≤ 2W
VIN = -7.2V to -25V
With Line: VIN = -7.2V to -25V, TJ = 25°C

-5.0

With Load: TJ = 25°C

1.1

25
20

175

0.4

0.4

2.3

3.3

1.4

1.2

0.6
80

Dropout Voltage
Peak Output Current
Short Circuit Current
Ripple Rejection

Output Noise Voltage (rms)
Long Term Stability
Thermal Shutdown

Power Pkgs: IO = 5mA to 1.5A
T - Pkg: IO = 5mA to 500mA

∆VO = 100mV, TJ = 25°C

Power Pkgs: IO = 1.5A, T - Pkg: IO = 500mA
Power Pkgs: TJ = 25°C
T - Pkg: TJ = 25°C
Power Pkgs: VIN = -35V, TJ = 25°C
T - Pkg: VIN = -35V, TJ = 25°C
∆VIN = 10V, f = 120Hz, TJ = 25°C
f = 10Hz to 100KHz (Note 2)
1000hrs. at TJ = 125°C
IO = 5mA

1.5

0.5

54

Units

V
mV
mV
mV

V

V
mA
mA

mA
mA

V

A

A

A

A

dB

µV/V

mV

°C

Note 1. All regulation tests are made at constant junction temperature with low duty cycle testing.

2. This test is guaranteed but is not tested in production.

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SG120

-8V & -12V NEGATIVE REGULATOR

ELECTRICAL CHARACTERISTICS (Note 1)

SG120-08

(Unless otherwise specified, these specifications apply over full operating ambient temperatures for SG120-08 with -55°C ≤ TA ≤ 150°C, and
VIN = -14V, IO = 5mA, CIN = 1.0mF, C
to the ambient temperature.)

Output Voltage
Line Regulation (Note 1)
Load Regulation (Note 1)

Total Output Voltage

Tolerance

Quiescent Current
Quiescent Current Change

Dropout Voltage
Peak Output Current
Short Circuit Current
Ripple Rejection

Output Noise Voltage (rms)
Long Term Stability
Thermal Shutdown

= 1.0mF. Low duty cycle pulse testing techniques are used which maintains junction and case temperature equal

OUT

Test Conditions

= 25°C

T

J

VIN = -10.5V to -25V, TJ = 25°C
Power Pkgs: IO = 5mA to 1.5A, TJ = 25°C
T - Pkg: IO = 5mA to 500mA, TJ = 25°C

= -10.5V to -25V

V

IN

Power Pkgs: I
T - Pkg: IO = 5mA to 500mA, P ≤ 2W

= 5mA to 1.5A, P ≤ 20W

O

Min.

-7.8

-7.65

-7.65

SG120-8

Typ. Max.

-8.0
10
20
10

-8.00

-8.00

-8.2

-8.35

-8.35
VIN = -10.5V to -25V
With Line: VIN = -10.5V to -25V, TJ = 25°C
With Load: T

Power Pkgs: I
T - Pkg: IO = 5mA to 500mA

= 25°C

J

= 5mA to 1.5A

O

0.4

0.4

0.4

∆VO = 100mV, TJ = 25°C

1.1

Power Pkgs: IO = 1.0A, T - Pkg: IO = 500mA
Power Pkgs: TJ = 25°C
T - Pkg: TJ = 25°C
Power Pkgs: VIN = -35V, TJ = 25°C
T - Pkg: VIN = -35V, TJ = 25°C
∆VIN = 10V, f = 120Hz, TJ = 25°C
f = 10Hz to 100KHz (Note 2)
1000hrs. at TJ = 125°C
IO = 5mA

1.5

0.5

54

2.3

3.3

1.4

1.2

0.6

25
32

175

25
80
25

80

UnitsParameter

V
mV
mV
mV

V

V

2

mA
mA

mA
mA

V

A

A

A

A

dB

µV/V

mV

°C

SG120-12

(Unless otherwise specified, these specifications apply over full operating ambient temperatures for SG120-12 with -55°C ≤ TA ≤ 150°C, and
VIN = -17V, IO = 5mA, CIN = 2.0mF, C
to the ambient temperature.)

Parameter

Output Voltage
Line Regulation

(Note 1)

Load Regulation (Note 1)
Total Output Voltage

Tolerance

Quiescent Current
Quiescent Current Change

= 1.0mF. Low duty cycle pulse testing techniques are used which maintains junction and case temperature equal

OUT

Test Conditions

T

= 25°C

J

VIN = -14V to -32V, TJ = 25°C
Power Pkgs: IO = 5mA to 1.0A, TJ = 25°C
T - Pkg: IO = 5mA to 500mA, TJ = 25°C

SG120-12

Min. Typ.

-11.7

-12.0
4

30
10

Max.

-12.3
10
80
25

VIN = -14.5V to -32V

-11.5

-11.5

-12.0

-12.0
2

-12.5

-12.5
4

0.4

Power Pkgs: IO = 5mA to 1.0A, P ≤ 20W

T - Pkg: IO = 5mA to 500mA, P ≤ 2W
VIN = -14V to -32V
With Line: VIN = -14V to -32V, TJ = 25°C
With Load: TJ = 25°C

Dropout Voltage
Peak Output Current
Short Circuit Current
Ripple Rejection

Output Noise Voltage (rms)
Long Term Stability
Thermal Shutdown

Power Pkgs: IO = 5mA to 1.0A

T - Pkg: IO = 5mA to 500mA
∆VO = 100mV, TJ = 25°C

Power Pkgs: IO = 1.0A, T - Pkg: IO = 500mA
Power Pkgs: TJ = 25°C
T - Pkg: TJ = 25°C
Power Pkgs: VIN = -35V, TJ = 25°C
T - Pkg: VIN = -35V, TJ = 25°C
∆VIN = 10V, f = 120Hz, TJ = 25°C
f = 10Hz to 100KHz (Note 2)
1000hrs. at TJ = 125°C
IO = 5mA

1.5

0.5

56

175

1.1

25
48

0.4

0.4

2.3

3.3

1.4

1.2

0.6
80

Units

V
mV
mV
mV

V

V
mA
mA

mA
mA

V

A

A

A

A

dB

µV/V

mV

°C

Note 1. All regulation tests are made at constant junction temperature with low duty cycle testing.

2. This test is guaranteed but is not tested in production.

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SG120

-15V & -18V NEGATIVE REGULATOR

ELECTRICAL CHARTACTERISTICS (Note 1)

SG120-15

(Unless otherwise specified, these specifications apply over full operating ambient temperatures for SG120-15 with -55°C ≤ TA ≤ 150°C, and
VIN = -20V, IO = 5mA, CIN = 2.0mF, C
to the ambient temperature.)

Parameter

Output Voltage
Line Regulation (Note 1)
Load Regulation (Note 1)

Total Output Voltage

Tolerance

Quiescent Current
Quiescent Current Change

Dropout Voltage
Peak Output Current
Short Circuit Current
Ripple Rejection

Output Noise Voltage (rms)
Long Term Stability
Thermal Shutdown

= 1.0mF. Low duty cycle pulse testing techniques are used which maintains junction and case temperature equal

OUT

Test Conditions

TJ = 25°C
VIN = -17V to -35V, TJ = 25°C
Power Pkgs: IO = 5mA to 1.0A, TJ = 25°C
T - Pkg: IO = 5mA to 500mA, TJ = 25°C

= -17.5V to -35V

V

IN

Power Pkgs: I
T - Pkg: IO = 5mA to 500mA, P ≤ 2W

= 5mA to 1.0A, P ≤ 20W

O

VIN = -17V to -35V

SG120-15

Min. Typ. Max.

-14.7

-15.0

-15.3

5
30
10

-14.5

-15.0

-15.5

-14.5

-15.0

-15.5

2

With Line: VIN = -17V to -35V, TJ = 25°C
With Load: T

Power Pkgs: I
T - Pkg: IO = 5mA to 500mA

= 25°C

J

= 5mA to 1.0A

O

∆VO = 100mV, TJ = 25°C

Power Pkgs: IO = 1.0A, T - Pkg: IO = 500mA
Power Pkgs: TJ = 25°C
T - Pkg: TJ = 25°C

1.1

1.5

0.5
Power Pkgs: VIN = -35V, TJ = 25°C
T - Pkg: VIN = -35V, TJ = 25°C
∆VIN = 10V, f = 120Hz, TJ = 25°C
f = 10Hz to 100KHz (Note 2)
1000hrs. at TJ = 125°C
IO = 5mA

56

25
60

175

10
80
25

4

0.4

0.4

0.4

2.3

3.3

1.4

1.2

0.6
80

Units

V
mV
mV
mV

V

V
mA
mA

mA
mA

V

A

A

A

A

dB

µV/V

mV

°C

SG120-18

(Unless otherwise specified, these specifications apply over full operating ambient temperatures for SG120-18 with -55°C ≤ TA ≤ 150°C, and
VIN = -27V, IO = 5mA, CIN = 2.0mF, C
to the ambient temperature.)

Parameter

Output Voltage
Line Regulation (Note 1)
Load Regulation (Note 1)

Total Output Voltage

Tolerance

Quiescent Current
Quiescent Current Change

= 1.0mF. Low duty cycle pulse testing techniques are used which maintains junction and case temperature equal

OUT

Test Conditions

T

= 25°C

J

VIN = -21V to -33V, TJ = 25°C
Power Pkgs: IO = 5mA to 1.0A, TJ = 25°C
T - Pkg: IO = 5mA to 500mA, TJ = 25°C

SG120-18

Min. Typ. Max.

-17.6

-18.0

-18.4

5

10

30

80

10

25

VIN = -22V to -33V

-17.4

-18.0

-18.0
2

-18.6

-18.6
4

0.4

Power Pkgs: IO = 5mA to 1.0A, P ≤ 20W

T - Pkg: IO = 5mA to 500mA, P ≤ 2W
VIN = -21V to -33V
With Line: VIN = -21V to -33V, TJ = 25°C

-17.4

With Load: TJ = 25°C

1.1

25
72

175

0.4

0.4

2.3

3.3

1.4

1.2

0.6

Dropout Voltage
Peak Output Current
Short Circuit Current
Ripple Rejection

Output Noise Voltage (rms)
Long Term Stability
Thermal Shutdown

Power Pkgs: IO = 5mA to 1.0A

T - Pkg: IO = 5mA to 500mA
∆VO = 100mV, TJ = 25°C

Power Pkgs: IO = 1.0A, T - Pkg: IO = 500mA
Power Pkgs: TJ = 25°C
T - Pkg: TJ = 25°C
Power Pkgs: VIN = -35V, TJ = 25°C
T - Pkg: VIN = -35V, TJ = 25°C
∆VIN = 10V, f = 120Hz, TJ = 25°C
f = 10Hz to 100KHz (Note 2)
1000hrs. at TJ = 125°C
IO = 5mA

1.5

0.5

56

Units

V
mV
mV
mV

V

V
mA
mA

mA
mA

V

A

A

A

A

dB

µV/V

mV

°C

Note 1. All regulation tests are made at constant junction temperature with low duty cycle testing.

2. This test is guaranteed but is not tested in production.

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SG120

-20V NEGATIVE REGULATOR

ELECTRICAL CHATRACTERISTICS (Note 1)

SG120-20

(Unless otherwise specified, these specifications apply over full operating ambient temperatures for SG120-20 with -55°C ≤ TA ≤ 150°C, and
VIN = -29V, IO = 5mA, CIN = 2.0mF, C
to the ambient temperature.)

Parameter

Output Voltage
Line Regulation (Note 1)
Load Regulation (Note 1)

Total Output Voltage

Tolerance

Quiescent Current
Quiescent Current Change

Dropout Voltage
Peak Output Current
Short Circuit Current
Ripple Rejection

Output Noise Voltage (rms)
Long Term Stability
Thermal Shutdown

= 1.0mF. Low duty cycle pulse testing techniques are used which maintains junction and case temperature equal

OUT

Test Conditions

TJ = 25°C
VIN = -23V to -35V, TJ = 25°C
Power Pkgs: IO = 5mA to 1.0A, TJ = 25°C
T - Pkg: IO = 5mA to 500mA, TJ = 25°C

= -24V to -35V

V

IN

Power Pkgs: I
T - Pkg: IO = 5mA to 500mA, P ≤ 2W

= 5mA to 1.0A, P ≤ 20W

O

VIN = -23V to -35V

SG120-20

Min. Typ. Max.

-20.5

-20.0

-19.5
5

30
10

-20.7

-20.0

-19.3

-20.7

-20.0

-19.3
2

With Line: VIN = -23V to -35V, TJ = 25°C
With Load: T

Power Pkgs: I
T - Pkg: IO = 5mA to 500mA

= 25°C

J

= 5mA to 1.0A

O

∆VO = 100mV, TJ = 25°C

Power Pkgs: IO = 1.0A, T - Pkg: IO = 500mA
Power Pkgs: TJ = 25°C
T - Pkg: TJ = 25°C

1.1

1.5

0.5
Power Pkgs: VIN = -35V, TJ = 25°C
T - Pkg: VIN = -35V, TJ = 25°C
∆VIN = 10V, f = 120Hz, TJ = 25°C
f = 10Hz to 100KHz (Note 2)
1000hrs. at TJ = 125°C
IO = 5mA

56

25
80

175

10
80
25

4

0.4

0.4

0.4

2.3

3.3

1.4

1.2

0.6
80

Units

V
mV
mV
mV

V

V
mA
mA

mA
mA

V

A

A

A

A

dB

µV/V

mV

°C

Note 1. All regulation tests are made at constant junction temperature with low duty cycle testing.

2. This test is guaranteed but is not tested in production.

11/91 Rev 1.4 6/97 LINFINITY Microelectronics Inc.

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SG120

CONNECTION DIAGRAMS & ORDERING INFORMATION (See Notes Below)

NEGATIVE REGULATOR

3-TERMINAL TO-3
METAL CAN
K-PACKAGE

3-TERMINAL TO-66
METAL CAN
R-PACKAGE

3-PIN TO-39 METAL CAN
T-PACKAGE

Part No.Package

Ambient

Temperature Range

SG120-XXK/883B -55°C to 125°C
SG120-XXK -55°C to 125°C

SG120-XXR/883B -55°C to 125°C
SG120-XXR -55°C to 125°C

SG120-XXT/883B -55°C to 125°C
SG120-XXT -55°C to 125°C

Connection Diagram

GROUND

V

GROUND

V

GROUND

V

OUT

OUT

OUT

CASE IS V

1

2

CASE IS V

IN

1

2

CASE IS V

IN

1

V

32

IN

IN

3-PIN HERMETIC TO-257
IG-PACKAGE (Isolated)

20-PIN CERAMIC (LCC)
LEADLESS CHIP CARRIER
L- PACKAGE

SG120-XXIG/883B -55°C to 125°C
SG120-XXIG -55°C to 125°C

SG120-XXL/883B -55°C to 125°C
SG120-XXL -55°C to 125°C

(Note 4) 1. N.C.

2. V

IN

3. N.C.

4. V

OUT

5. V

OUT

6. N.C.

7. V

OUT

8. N.C.

9. N.C.

10. N.C.

SENSE

3212019

4
5
6
7
8

9

10 11 12 13

V

OUT

V

IN

GROUND

18

17
16
15
14

11. N.C.

12. N.C.

13. N.C.

14. N.C.

15. GND

16. N.C.

17. GND

18. N.C.

19. N.C.

20. V

IN

Note 1. Contact factory for JAN and DESC product availability.

2. All parts are viewed from the top.

3. "XX" to be replaced by output voltage of specific fixed regulator.

4. Some products will be available in leadless chip carrier (LCC) and hermetic flat pack (F). Consult factory for price and availability

11/91 Rev 1.4 6/97 LINFINITY Microelectronics Inc.

Copyright  1997 11861 Western Avenue

8 [phone]

∞ ∞

∞ Garden Grove, CA 92841

∞ ∞

∞∞

∞ FAX: [phone]

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