Microsemi Corporation SG137AL, SG137AL-883B, SG137AL-DESC, SG137AT, SG137AT-883B Datasheet

SG137A/SG237A/SG337A

SG137/SG237/SG337

1.5 AMP NEGATIVE ADJUSTABLE REGULATOR

DESCRIPTION	FEATURES
The SG137A family of negative adjustable regulators will deliver up to 1.5A	∙	1 % output voltage tolerance
output current over an output voltage range of -1.2V to -37V. Silicon General	∙	0.01%/V line regulation
has made significant improvements in these regulators compared to previous	∙	0.5% load regulation
devices, such as better line and load regulation, and a maximum output voltage	∙	0.02%/W thermal regulation
error of 1%. The SG137 family uses the same chip design and guarantees	∙	Available in hermetic TO-220
maximum output voltage error of ±2%.	HIGH RELIABILITY FEATURES
Every effort has been made to make these devices easy to use and difficult to		-SG137A/SG137
damage. Internal current and power limiting coupled with true thermal limiting	♦ Available to MIL-STD-883 and DESC SMD
prevents device damage due to overloads or shorts even if the regulator is not
fastened to a heat sink.	♦ Scheduled for MIL-M38510 QPL listing
	♦ MIL-M38510/11804BYA - JAN137K
The SG137A/137 family of products are ideal complements to the SG117A/	♦ LMI level "S" processing available

117 adjustable positive regulators.

BLOCK DIAGRAM

2/92 Rev 1.1 2/94

LINFINITY Microelectronics Inc.

Copyright ã 1994	11861 Western Avenue ∞ Garden Grove, CA 92841
1	[phone] ∞ FAX: [phone]

SG137A/SG137 SERIES

ABSOLUTE MAXIMUM RATINGS (Note 1)

Power Dissipation ..........................................

Internally Limited

Operating Junction Temperature

150°C

Input to Output Voltage Differential ....................................

40V

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

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

-65°C to 150°C

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

300°C

Note 1. Exceeding these ratings could cause damage to the device.

THERMAL DATA

K Package:

Note A. Junction Temperature Calculation: TJ = TA + (PD x θJA).

Thermal Resistance-Junction to Leads, qJC ................

3.0°C/W

Thermal Resistance-Junction to Ambient, q

...............

35°C/W

Note B. The above numbers for qJC are maximums for the limiting

R Package:

JA

thermal resistance of the package in a standard mount-

Thermal Resistance-Junction to Leads, qJC ................

5.0°C/W

ing configuration. The qJA

numbers are meant to be

Thermal Resistance-Junction to Ambient, qJA

..............

40°C/W

guidelines for the thermal performance of the device/pc-

T Package:

board system. All of the above assume no ambient

Thermal Resistance-Junction to Leads, qJC .................

15°C/W

airflow.

Thermal Resistance-Junction to Ambient, qJA

............

120°C/W

IG Package:

Thermal Resistance-Junction to Leads, qJC ................

3.5°C/W

Thermal Resistance-Junction to Ambient, qJA

..............

42°C/W

L Package:

Thermal Resistance-Junction to Leads, qJC .................

35°C/W

Thermal Resistance-Junction to Ambient, qJA

............

120°C/W

RECOMMENDED OPERATING CONDITIONS (Note 2 & 3)

Input Voltage Range ..............................

-(VOUT + 3.5V) to -36V

Operating Junction Temperature Range

-55°C to 150°C

SG137A/SG137 ............................................

SG237A/SG237 ............................................

-25°C to 150°C

SG337A/SG337 .............................................

0°C to 125°C

Note 2. Range over which the device is functional.

Note 3. These ratings are applicable for junction temperatures of less than 135°C.

ELECTRICAL CHARACTERISTICS

(Unless otherwise specified, these specifications apply over full operating ambient temperatures for SG137A/SG137 with -55°C ≤ TA ≤ 150°C, SG237A/

SG237 with -25°C ≤ TA ≤ 150°C, SG337A/SG337 with 0°C ≤ TA ≤ 125°C, |V IN - VOUT| = 5.0V, and for IOUT = 500mA (K, R, and IG power packages) and IOUT

= 100mA (T and L packages). Although power dissipation is internally limited, these specifications are applicable for power dissipations of 2Ω for the T and

L packages, and 20Ω for the K, R, and IG packages. IMAX is 1.5A for the K, R, and IG packages and 0.5A for the T and L packages. Low duty cycle pulse

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

Parameter

Test Conditions

SG137A/SG237A

SG137/SG237

Units

Min.

Typ.

Max.

Min.

Typ.

Max.

Reference Voltage (Note 6)

IOUT

= 10mA,

TA

= 25°C

-1.238

-1.250

-1.262

-1.225

-1.250

-1.275

V

3V

£ |V

- V

|

£ 40V, 10mA £ I

OUT

£ I

MAX

-1.220

-1.250

-1.280

-1.200

-1.250

-1.300

V

IN

OUT

Line Regulation (Note 4, 6)

3V £ |V

- V | £ 40V, I £ I

MAX

IN

OUT

OUT

TA = 25°C

0.005

0.01

0.01

0.02

%/V

Load Regulation (Note 4)

10mA £ IOUT £ IMAX

|VOUT| £ 5V, TA = 25°C

5

25

15

25

mV

|V

| ³ 5V, T

= 25°C

0.1

0.5

0.3

0.5

%

OUT

A

|VOUT| £ 5V

10

50

20

50

mV

|VOUT| ³

5V

0.2

1.0

0.3

1.0

%

Thermal Regulation (Note 5)

TA = 25°C, 10ms pulse

0.002

0.02

0.002

0.02

%/W

Ripple Rejection

VOUT = -10V, f =120Hz

CADJ = 0, TA = 25°C

60

66

60

dB

CADJ = 10mF

70

80

66

77

dB

Adjust Pin Current

TA

= 25°C

65

100

65

100

mA

Adjust Pin Current Change

3V

£ |VIN - VOUT| £ 40V

1.0

5

2

5

mA

(Note 6)

10mA £ IOUT

£ IMAX

0.2

2

0.5

5

mA

2/92 Rev 1.1 2/94

LINFINITY Microelectronics Inc.

Copyright ã 1994	11861 Western Avenue ∞ Garden Grove, CA 92841
2	[phone] ∞ FAX: [phone]