Datasheet SG7905.2AIG, SG7905.2AK, SG7905.2AR, SG7905.2T, SG7905AIG Datasheet (Microsemi Corporation)

SG7900A/SG7900 SERIES

12/91 Rev 1.4 12/99 LINFINITY Microelectronics Inc.

Copyright  1999 11861 Western Avenue

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NEGATIVE FIXED VOLTAGE REGULATOR

The SG7900A/SG7900 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/SG7800, SG140 line of three
terminal regulators.

These units feature a unique band gap reference which allows the
SG7900A series to be specified with an output voltage tolerance of ±1.5%.
The SG7900A versions also offer much improved line regulation character­istics.

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 (SG7900 series) or a capacitor and
5mA minimum load (SG120 series) 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.

These devices are available in hermetically sealed TO-257, TO-3, TO-39
and LCC package.

DESCRIPTION

FEATURES

••

••

•

Output voltage set internally to

±±

±±

±1.5% on SG7900A

••

••

• Output current to 1.5A

••

••

• Excellent line and load regulation

••

••

• Foldback current limiting

••

••

• Thermal overload protection

••

••

• Voltages available: -5V, -12V, -15V

••

••

• Contact factory for other voltage options

••

••

• Available in surface mount package

HIGH RELIABILITY FEATURES

- SG7900A/SG7900

♦♦

♦♦

♦ Available to MIL-STD - 883
♦♦

♦♦

♦ MIL-M38510/11501BXA - JAN7905T
♦♦

♦♦

♦ MIL-M38510/11505BYA - JAN7905K
♦♦

♦♦

♦ MIL-M38510/11502BXA - JAN7912T
♦♦

♦♦

♦ MIL-M38510/11506BYA - JAN7912K
♦♦

♦♦

♦ MIL-M38510/11503BXA - JAN7915T
♦♦

♦♦

♦ MIL-M38510/11507BYA - JAN7915K
♦♦

♦♦

♦ LMI level "S" processing available

SCHEMATIC DIAGRAM

SG7900A/SG7900

**

**

For normal
operation the (VOS)
Sense Pin must be
externally
connected to the
load.

SG7900A/SG7900 SERIES

12/91 Rev 1.4 12/99 LINFINITY Microelectronics Inc.

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ABSOLUTE MAXIMUM RATINGS (Note 1)

NEGATIVE REGULATOR

Device Input Voltage Differential

Output Voltage Input Voltage (Output shorted to ground)

-5V -35V 35V

-12V -35V 35V

-15V -40V 35V

150°C

-65°C to 150°C
300°C

Operating Junction Temperature

Hermetic (K, T, IG & L - Packages) ........................

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

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

Note 1. Values beyond which damage may occur.

THERMAL DATA

K Package:

Thermal Resistance-

Junction to Case, θ

JC

................. 3.0°C/W

Thermal Resistance-

Junction to Ambient, θ

JA

............... 35°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

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

JC

are maximums for the limiting thermal
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.

FIGURE 1.
MAXIMUM AVERAGE POWER DISSIPATION

FIGURE 2.
QUIESCENT CURRENT VS. LOAD

FIGURE 3.
TEMPERATURE COEFFICIENT

Note 2. Range over which the device is functional.

CHARACTERISTIC CURVES

-55°C to 150°C

Operating Junction Temperature Range:

SG7900A/7900 .............................................

RECOMMENDED OPERATING CONDITIONS (Note 2)

SG7900A/SG7900 SERIES

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FIGURE 6.
SHORT CIRCUIT CURRENT VS. V

IN

CHARACTERISTIC CURVES (continued)

FIGURE 4.
SHORTCIRCUIT CURRENT VS. V

IN

FIGURE 5.
QUIESCENT CURRENT VS. V

IN

FIGURE 7.
DROPOUT CHARACTERISTICS

FIGURE 8.
RIPPLE REJECTION VS. FREQUENCY

APPLICATIONS

FIGURE 9 - FIXED OUTPUT REGULATOR

FIGURE 10 - CIRCUIT FOR INCREASING OUTPUT VOLTAGE

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 electrolytics are used, at least 10 times
values shown should be selected.

3. If large output capacities are used, the regulators must be
protected from momentary input shorts. A high current diode

NOTE: C3 optional for improved transient response and ripple rejec

R2 =

V(REG)

15mA

V

OUT

= V (REGULATOR)

R1 + R

2

R

1

NEGATIVE REGULATOR

SG7900A/SG7900 SERIES

12/91 Rev 1.4 12/99 LINFINITY Microelectronics Inc.

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-5.0V NEGATIVE REGULATOR

ELECTRICAL SPECIFICATIONS (Note 1)

(Unless otherwise specified, these specifications apply over the operating ambient temperatures for SG7905A/SG7905 with -55°C ≤ T

A

≤ 150°C,

V

IN

= -10V, IO = 500mA for the K and IG -Power Packages-, IO = 100mA for the T and L packages, CIN = 2µF, and C

OUT

= 1.0µF. Low duty cycle pulse

testing techniques are used which maintains junction and case temperatures equal to the ambient temperature.)

SG7905A/SG7905

Units

SG7905

Min. Typ. Max.

Min. Typ. Max.

SG7905A

-5.0
3
1

15
15

5

-5.00

-5.00

1.1

25
20

175

Test Conditions

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

-4.8

-4.70

-4.70

1.5

0.5

54

V
mV
mV
mV
mV
mV

V

V
mA
mA
mA
mA
mA

V

A

A

A

A

dB

µV/V

mV

°C

-5.2
50
25

100

25

100

-5.30

-5.30

2.5

2.0

1.3

0.5

0.5

2.3

3.3

1.4

1.2

0.6
80

-5.08
25
12
75
25
30

-5.15

-5.15

2.5

2.0

1.3

0.5

0.5

2.3

3.3

1.4

1.2

0.6
80

-5.00
5
3

15
15

5

-5.00

-5.00

1.1

25
20

175

-4.92

-4.85

-4.85

1.5

0.5

54

TJ = 25°C
V

IN

= -7.5V to -25V, TJ = 25°C

V

IN

= -8V to -12V, TJ = 25°C

Power Pkgs: IO = 5mA to 1.5A, TJ = 25°C

IO = 250mA to 750mA, TJ = 25°C
T - Pkg: IO = 5mA to 500mA, TJ = 25°C
V

IN

= -8V to -20V

Power Pkgs: I

O

= 5mA to 1.0A, P ≤ 20W

T - Pkg: IO = 5mA to 500mA, P ≤ 2W
Over Temperature Range
TJ = 25°C
with Line: V

IN

= -8V to -25V

with Load: I

O

= 5mA to 1.0A (Power Packages)

IO = 5mA to 500mA (T)

∆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

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.

SG7900A/SG7900 SERIES

12/91 Rev 1.4 12/99 LINFINITY Microelectronics Inc.

Copyright  1999 11861 Western Avenue

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-12V NEGATIVE REGULATOR

ELECTRICAL SPECIFICATIONS (Note 1)

(Unless otherwise specified, these specifications apply over the operating ambient temperatures for SG7912A/SG7912 with -55°C ≤ T

A

≤ 150°C,

V

IN

= -19V, IO = 500mA for the K and IG -Power Packages-, IO = 100mA for the T and L packages, CIN = 2µF, and C

OUT

= 1.0µF. Low duty cycle pulse

testing techniques are used which maintains junction and case temperatures equal to the ambient temperature.)

SG7912A/SG7912

Units

SG7912

Min. Typ. Max.

Min. Typ. Max.

SG7912A

Test Conditions

Parameter

T

J

= 25°C

V

IN

= -14.5V to -30V, TJ = 25°C

V

IN

= -16V to -22V, TJ = 25°C

Power Pkgs: IO = 5mA to 1.5A, TJ = 25°C

IO = 250mA to 750mA, TJ = 25°C
T - Pkg: IO = 5mA to 500mA, TJ = 25°C
V

IN

= -14.5V to -27V

Power Pkgs: I

O

= 5mA to 1.0A, P ≤ 20W

T - Pkg: IO = 5mA to 500mA, P ≤ 2W
Over Temperature Range
TJ = 25°C
with Line: V

IN

= -14.5V to -30V

with Load: I

O

= 5mA to 1.0A (Power Packages)

IO = 5mA to 500mA (T)

∆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

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

-11.8

-11.7

-11.7

1.5

0.5

54

-12.0
4
3

20
10
10

-12.0

-12.0

1.1

25
60

175

-12.2
60
30
90
40
40

-12.3

-12.3

4
3

1.0

0.5

0.5

2.3

3.3

1.4

1.2

0.6
80

-12.0
10

3

12

4

10

-12.0

-12.0

1.1

25
60

175

-12.5
120

60

120

60

240

-12.6

-12.6

4
3

1.0

0.5

0.5

2.3

3.3

1.4

0.2

0.6
80

-11.5

-11.4

-11.4

1.5

0.5

54

V
mV
mV
mV
mV
mV

V

V
mA
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.

SG7900A/SG7900 SERIES

12/91 Rev 1.4 12/99 LINFINITY Microelectronics Inc.

Copyright  1999 11861 Western Avenue

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-15V NEGATIVE REGULATOR

ELECTRICAL SPECIFICATIONS (Note 1)

(Unless otherwise specified, these specifications apply over the operating ambient temperatures for SG7915A/SG7915 with -55°C ≤ T

A

≤ 150°C,

V

IN

= -23V, IO = 500mA for the K and IG -Power Packages-, IO = 100mA for the T and L packages, CIN = 2µF, and C

OUT

= 1.0µF. Low duty cycle pulse

testing techniques are used which maintains junction and case temperatures equal to the ambient temperature.)

SG7915A/SG7915

Units

SG7915

Min. Typ. Max.

Min. Typ. Max.

SG7915A

Test Conditions

Parameter

T

J

= 25°C

V

IN

= -17.5V to -30V, TJ = 25°C

V

IN

= -20V to -25V, TJ = 25°C

Power Pkgs: IO = 5mA to 1.5A, TJ = 25°C

IO = 250mA to 750mA, TJ = 25°C
T - Pkg: IO = 5mA to 500mA, TJ = 25°C
V

IN

= -18.5V to -30V

Power Pkgs: I

O

= 5mA to 1.0A, P ≤ 20W

T - Pkg: IO = 5mA to 500mA, P ≤ 2W
Over Temperature Range
TJ = 25°C
with Line: V

IN

= -18.5V to -30V

with Load: I

O

= 5mA to 1.0A (Power Packages)

IO = 5mA to 500mA (T)

∆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

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

V
mV
mV
mV
mV
mV

V

V
mA
mA
mA
mA
mA

V

A

A

A

A

dB

µV/V

mV

°C

-15.6
150

75

150

75

240

-15.75

-15.75
4
3

1.0

0.5

0.5

2.3

3.3

1.4

1.2

0.6
80

-15.0
11

3

12

4

10

-15.00

-15.00

1.1

25
60

175

-14.4

-14.25

-14.25

1.5

0.5

54

-15.2
75
40

100

50
50

-15.4

-15.4

4
3

1.0

0.5

0.5

2.3

3.3

1.4

1.2

0.6
80

-15.0
5
3

30

4

10

-15.0

-15.0

1.1

25
60

175

-14.8

-14.6

-14.6

1.5

0.5

54

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.

SG7900A/SG7900 SERIES

12/91 Rev 1.4 12/99 LINFINITY Microelectronics Inc.

Copyright  1999 11861 Western Avenue

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CONNECTION DIAGRAMS & ORDERING INFORMATION (See Notes Below)

NEGATIVE REGULATOR

Part No.Package

Connection Diagram

3-TERMINAL TO-3
METAL CAN
K-PACKAGE

SG79XXAK/883B -55°C to 125°C
SG7905AK/DESC -55°C to 125°C
SG7912AK/DESC -55°C to 125°C
SG7915AK/DESC -55°C to 125°C
SG79XXAK -55°C to 125°C
SG79XXK/883B -55°C to 125°C
JAN7905K -55°C to 125°C
JAN7912K -55°C to 125°C
JAN7915K -55°C to 125°C
SG79XXK -55°C to 125°C
SG79XXK 0°C to 125°C

2

1

GROUND

CASE IS V

IN

V

OUT

Ambient

Temperature Range

3-PIN TO-39 METAL CAN
T-PACKAGE

SG79XXAT/883B -55°C to 125°C
SG7905AT/DESC -55°C to 125°C
SG7912AT/DESC -55°C to 125°C
SG7915AT/DESC -55°C to 125°C
SG79XXAT -55°C to 125°C
SG79XXT/883B -55°C to 125°C
JAN7905T -55°C to 125°C
JAN7912T -55°C to 125°C
JAN7915T -55°C to 125°C
SG79XXT -55°C to 125°C

32

V

IN

V

OUT

GROUND

1

CASE IS V

IN

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

SG79XXAIG/883B -55°C to 125°C
SG7905AIG/DESC -55°C to 125°C
SG7912AIG/DESC -55°C to 125°C
SG7915AIG/DESC -55°C to 125°C
SG79XXAIG -55°C to 125°C
SG79XXIG/883B -55°C to 125°C
SG79XXIG -55°C to 125°C

GROUND

V

OUT

V

IN

Tab is V

IN

20-PIN CERAMIC
LEADLESS CHIP CARRIER
L- PACKAGE

SG79XXL/883B -55°C to 125°C
SG79XXL -55°C to 125°C
SG7905AL/DESC -55°C to 125°C
SG7912AL/DESC -55°C to 125°C
SG7915AL/DESC -55°C to 125°C

4
5
6
7

8

321

14

15

16

17

18

20 19

9 11121310

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

1. N.C.

2. V

IN

3. N.C.

4. V

O

5. V

O

6. N.C.

7. VO SENSE

8. N.C.

9. N.C.

10. N.C.

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 hermetic flat pack (F). Consult factory for price and availability.

5. Both inputs and outputs must be externally connected together at the device terminals.

6. For normal operation, the VO SENSE pin must be externally connected to the load.

(See Notes 5 & 6)