SG137K/DESC [MICROSEMI]

1.5 AMP NEGATIVE ADJUSTABLE REGULATOR; 1.5 AMP负可调稳压器


型号：	SG137K/DESC
厂家：	Microsemi
描述：	1.5 AMP NEGATIVE ADJUSTABLE REGULATOR 1.5 AMP负可调稳压器线性稳压器IC 调节器电源电路输出元件
文件：	总6页 (文件大小：318K)
中文：	中文翻译
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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

output current over an output voltage range of -1.2V to -37V. Silicon General

has made significant improvements in these regulators compared to previous

devices, such as better line and load regulation, and a maximum output voltage

error of 1%. The SG137 family uses the same chip design and guarantees

maximum output voltage error of ±2%.

• 1 % output voltage tolerance

• 0.01%/V line regulation

• 0.5% load regulation

• 0.02%/W thermal regulation

• Available in hermetic TO-220

HIGH RELIABILITY FEATURES

-SG137A/SG137

Every effort has been made to make these devices easy to use and difficult to

damage. Internal current and power limiting coupled with true thermal limiting

prevents device damage due to overloads or shorts even if the regulator is not

fastened to a heat sink.

♦ Available to MIL-STD-883 and DESC SMD

♦ Scheduled for MIL-M38510 QPL listing

♦ MIL-M38510/11804BYA - JAN137K

♦ LMI level "S" processing available

The SG137A/137 family of products are ideal complements to the SG117A/

117 adjustable positive regulators.

BLOCK DIAGRAM

2/92 Rev 1.1 2/94

LINFINITY Microelectronics Inc.

11861 Western Avenue ∞ Garden Grove, CA 92841

(714) 898-8121 ∞ FAX: (714) 893-2570

SG137A/SG137 SERIES

ABSOLUTE MAXIMUM RATINGS (Note 1)

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

Operating Junction Temperature

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

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

Internally Limited

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

40V

-65°C to 150°C

150°C

300°C

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

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

THERMAL DATA

K Package:

Note A. Junction Temperature Calculation: T_J= T_A+ (P_Dx θ_JA).

Thermal Resistance-Junction to Leads, θ_JC................ 3.0°C/W

Thermal Resistance-Junction to Ambient, θ_JA............... 35°C/W

R Package:

Thermal Resistance-Junction to Leads, θ_JC................ 5.0°C/W

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

T Package:

Thermal Resistance-Junction to Leads, θ_JC................. 15°C/W

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

IG Package:

Note B. The above numbers for θ_JCare maximums for the limiting

thermal resistance of the package in a standard mount-

ing configuration. The θ_JAnumbers are meant to be

guidelines for the thermal performance of the device/pc-

board system. All of the above assume no ambient

airflow.

Thermal Resistance-Junction to Leads, θ_JC................ 3.5°C/W

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

L Package:

Thermal Resistance-Junction to Leads, θ_JC................. 35°C/W

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

RECOMMENDED OPERATING CONDITIONS (Note 2 & 3)

Input Voltage Range ..............................-(V_OUT+ 3.5V) to -36V

Operating Junction Temperature Range

SG137A/SG137 ...........................................-.55°C to 150°C

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≤ T ≤150°C, SG237A/

SG237 with -25°C≤ T_A≤ 150°C, SG337A/SG337 with 0°C≤ T_A≤125°C, |V_IN- V_OUT| = 5.0V, and for I_OUT= 500mA (K, R, and IG power^Apackages) and I_OUT

=100mA(TandLpackages). Althoughpowerdissipationisinternallylimited,thesespecificationsareapplicableforpowerdissipationsof2ΩfortheTand

L packages, and 20Ω for the K, R, and IG packages. I_MAXis 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.)

SG137A/SG237A

Min. Typ. Max.

-1.238-1.250-1.262-1.225-1.250-1.275

-1.220-1.250-1.280-1.200-1.250-1.300

SG137/SG237

Min. Typ. Max.

Parameter

Test Conditions

I_OUT= 10mA, T_A= 25°C

Units

Reference Voltage (Note 6)

3V ≤ |V - V_OUT| ≤ 40V, 10mA ≤ I_OUT≤ I_MAX

Line Regulation (Note 4, 6)

Load Regulation (Note 4)

3V ≤ |V - V_OUT| ≤ 40V, I_OUT≤ I_MAX

T_A= 25°C

10mA ≤ I_OUT≤ I_MAX

|V_OUT| ≤ 5V, T_A= 25°C

|V_OUT|≥ 5V, T_A= 25°C

|V_OUT| ≤ 5V

0.005 0.01

0.01 0.02

%/V

0.1

0.5

0.3

0.5

0.2

1.0

0.3

1.0

|V_OUT|≥ 5V

Thermal Regulation (Note 5)

Ripple Rejection

T_A= 25°C, 10ms pulse

V_OUT= -10V, f =120Hz

0.002 0.02

0.002 0.02 %/W

1.0

0.2

µA

_ADJ= 0, T_A= 25°C

C_ADJ= 10µF

T_A= 25°C

3V ≤ |V_IN- V_OUT| ≤ 40V

10mA ≤ I_OUT≤ I_MAX

Adjust Pin Current

Adjust Pin Current Change

(Note 6)

100

0.5

2/92 Rev 1.1 2/94

LINFINITY Microelectronics Inc.

11861 Western Avenue ∞ Garden Grove, CA 92841

(714) 898-8121 FAX: (714) 893-2570

∞

SG137A/SG137 SERIES

ELECTRICAL CHARACTERISTICS (continued)

SG137A/SG237A

Min. Typ. Max. Min. Typ. Max.

SG137/SG237

Parameter

Test Conditions

Units

Minimum Load Current

|V_IN- V_OUT| ≤ 40V

|V_IN- V_OUT| ≤ 10V

2.5

1.2

5.0

2.5

1.2

5.0

3.0

Current Limit

|V_IN- V_OUT| ≤ 15V

K, P, R, IG Packages

T, L, Packages

1.5

0.5

2.2

0.8

3.2

1.5

0.5

2.2

0.8

|V_IN- V_OUT| ≤ 40V, T_J= 25°C

K, P, R, IG Packages

T, L, Packages

0.24 0.4

0.15 0.25 0.5 0.15 0.25

1.0 0.24 0.4

Temperature Stability (Note 5)

Long Term Stability (Note 5)

RMS Output Noise (% of V_OUT

0.6

0.3

0.003

1.5

1.0

0.6

0.3

0.003

T_A= 125°C, 1000 Hours

T_A= 25°C, 10Hz ≤ f ≤ 10 KHz (Note 5)

1.0

)

SG337A

SG337

Parameter

Test Conditions

Units

Min. Typ. Max.

-1.238-1.250-1.262-1.213-1.250

Reference Voltage (Note 6)

_OUT= 10mA, T_A= 25°C

3V ≤ |V - V_OUT| ≤ 40V, 10mA ≤ I_OUT≤ I_MAX

-1.287

-1.220-1.250-1.280-1.200-1.250-1.300

Line Regulation (Note 4, 6)

Load Regulation (Note 4)

3V ≤ |V - V_OUT| ≤ 40V, I_OUT≤ I_MAX

T_A= 25°C

10mA ≤ I_OUT≤ I_MAX

|V_OUT| ≤ 5V, T_A= 25°C

|V_OUT|≥ 5V, T_A= 25°C

|V_OUT| ≤ 5V

0.005 0.01

0.01 0.04

%/V

0.1

0.5

0.3

1.0

|V_OUT|≥ 5V

0.2

1.0

0.3

1.5

Thermal Regulation (Note 5)

Ripple Rejection

T_A= 25°C, 10ms pulse

V_OUT= -10V, f =120Hz

0.002 0.02

0.003 0.04 %/W

_ADJ= 0, T_A= 25°C

1.0

0.2

2.5

1.2

0.5

2.5

µA

C_ADJ= 10µF

T_A= 25°C

Adjust Pin Current

Adjust Pin Current Change

(Note 6)

100

3V ≤ |V_IN- V_OUT| ≤ 40V

10mA ≤ I_OUT≤ I_MAX

|V_IN- V_OUT| ≤ 40V

|V_IN- V_OUT| ≤ 10V

|V_IN- V_OUT| ≤ 15V

K, P, R, IG-Packages

T, L-Packages

Minimum Load Current

Current Limit

1.5

0.5

2.2

0.8

3.5

1.5

0.5

2.2

0.8

|V_IN- V_OUT| ≤ 40V, T_J= 25°C

K, P, R, IG- Packages

T, L-Packages

0.24 0.5

0.15 0.25 0.5 0.10 0.17

1.0 0.15 0.4

Temperature Stability (Note 5)

Long Term Stability (Note 5)

RMS Output Noise (% of V_OUT

0.6

0.3

0.003

1.5

1.0

0.6

0.3

0.003

T_A= 125°C, 1000hr

T_A= 25°C, 10Hz ≤ f ≤ 10KHz (Note 5)

1.0

)

Note 4. Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating

effects are covered under the specification for thermal regulation.

Note 5. These parameters, although guaranteed, are not tested in production.

Note 6. I_MAXfor K, R, and IG packages is V_IN- V_OUT= 3V / 1.5A and V_IN- V_OUT= 40V / 240mA. For T and L packages I_MAXis V_IN- V_OUT= 3V / 500mA

and V_IN- V_OUT= 40V / 150mA.

2/92 Rev 1.1 2/94

LINFINITY Microelectronics Inc.

11861 Western Avenue ∞ Garden Grove, CA 92841

(714) 898-8121 ∞ FAX: (714) 893-2570

SG137A/SG137 SERIES

CHARACTERISTIC CURVES

FIGURE 2.

FIGURE 1.

FIGURE 3.

INPUT/OUTPUT DIFFERENTIAL

REFERENCE VOLTAGE VS. TEMPERATURE

CURRENT VS. INPUT/OUTPUT DIFFERENTIAL

VS. OUTPUT CURRENT

FIGURE 4. *

FIGURE 5.

FIGURE 6.

OUTPUT VOLTAGE DEVIATION

VS. OUTPUT CURRENT

INPUT/OUTPUT DIFFERENTIAL

VS. OUTPUT CURRENT

ADJUSTMENT CURRENT VS. TEMPERATURE

The SG137A has load regulation compensation which

makes the typical unit read close to zero. This band

represents the typical production spread.

APPLICATION INFORMATION

OUTPUT VOLTAGE

The output voltage is determined by two external resistors, R₁&

R₂(see Figure 7).

Where: V_REF=Reference Voltage, I_ADJ= Adjustment Pin Current.

In most applications, the second term is small enough to be

ignored, typically about 0.5% of V_OUT. In more critical applica-

tions, the exact formula should be used, with I_ADJequal to 65µA.

Solving for R₂yields:

V_OUT- V_REF

R₂=

V_REF

+ I_ADJ

R₁

Smaller values of R₁and R₂will reduce the influence of I_ADJon the

output voltage, but the no-load current drain on the regulator will

be increased. Typical values for R₁are between 100Ω and 300Ω,

giving 12.5 mA and 4.2mA no-load current respectively. There

is an additional consideration in selecting R₁the minimum load

current specification of the regulator. The operating current of

FIGURE 6

The exact formula for the output voltage is:

R₂+ R₁

V_OUT= V_REF

+ I_ADJ(R₂)

(

)

R₁

2/92 Rev 1.1 2/94

LINFINITY Microelectronics Inc.

11861 Western Avenue ∞ Garden Grove, CA 92841

(714) 898-8121 ∞ FAX: (714) 893-2570

SG137A/SG137 SERIES

APPLICATION INFORMATION (continued)

EXAMPLES:

the SG137A flows from input to output. If this current is not

absorbed by the load, the output of the regulator will rise above

the regulated value. The current drawn by R₁and R₂is normally

high enough to absorb the current, but care must be taken in no–

load situations where R₁and R₂have high values. The maximum

value for the operating current, which must be absorbed, is 5mA

for the SG137A, If input-output voltage differential is less than

10V, the operating current that must be absorbed drops to 3mA.

The output stability, load regulation, line regulation, thermal

1. A precision 10V regulator to supply up to 1Amp load current.

a. Select R₁= 100Ω to minimize effect of I_ADJ

V_OUT- V_REF

10V - 1.25V

(1.25V/100W)+65mA

b. Calculate R₂=

= 704W

(V_REF/R₁) + I_ADJ

2. A 15V regulator to run off batteries and supply 50mA.

V_INMAX = 25V

a. To minimize battery drain, select R₁as high as possible

1.25V

R₁=

= 417Ω, use 404Ω, 1%

3mA

TYPICAL APPLICATIONS

regulation, temperature drift, long term drift, and noise, can be

improved by a factor of 6.6 over the standard regulator configu-

ration. This assumes a zener whose drift and noise is considera-

bly better than the regulator itself. The LM329B has 20PPM/°C

maximum drift and about 10 times lower noise than the regulator.

In the application shown Figure 8, regulators #2 to #N will track

regulator #1 to within ±24mV initially, and to ±60mV over all load,

line, and temperature conditions. If any regulator output is

shorted to ground, all other outputs will drop to -2V. Load

regulation of regulators #2 to #N will be improved by V_OUT/1.25V

compared to a standard regulator, so regulator #1 should be the

one which has the lowest load current.

FIGURE 8 - MULTIPLE TRACKING REGULATORS

FIGURE 9 - HIGH STABILITY REGULATOR

FIGURE 10 - CURRENT REGULATOR

FIGURE 11 - DUAL TRACKING SUPPLY ±1.25V to ±20V

2/92 Rev 1.1 2/94

LINFINITY Microelectronics Inc.

11861 Western Avenue ∞ Garden Grove, CA 92841

(714) 898-8121 FAX: (714) 893-2570

∞

SG137A/SG137 SERIES

CONNECTION DIAGRAMS & ORDERING INFORMATION (See Notes Below)

Ambient

Temperature Range

Package

Part No.

Connection Diagram

3-TERMINALTO-3

METAL CAN

K-PACKAGE

SG137AK/883B

SG137AK/DESC -55°C to 125°C

-55°C to 125°C

ADJUSTMENT

SG137AK

SG237AK

SG337AK

SG137K/883B

JAN137K

SG137K/DESC

SG137K

SG237K

-55°C to 125°C

-25°C to 85°C

0°C to 70C

-55°C to 125°C

-25°C to 85°C

0°C to 70°C

CASE IS V_IN

V_OUT

SG337K

3-TERMINALTO-66

METAL CAN

R-PACKAGE

SG137AR/883B

SG137AR/DESC -55°C to 125°C

-55°C to 125°C

ADJUSTMENT

SG137AR

SG237AR

SG337AR

SG137R/883B

SG137R/DESC

SG137R

-55°C to 125°C

-25°C to 85°C

0°C to 70°C

-55°C to 125°C

-25°C to 85°C

0°C to 70°C

CASE IS V_IN

V_OUT

SG237R

SG337R

3-PIN TO-39 METAL CAN

T-PACKAGE

SG137AT/883B

SG137AT/DESC -55°C to 125°C

-55°C to 125°C

SG137AT

SG237AT

SG337AT

SG137T/883B

SG137T/DESC

SG137T

-55°C to 125°C

-25°C to 85°C

0°C to 70°C

-55°C to 125°C

-25°C to 85°C

0°C to 70°C

ADJUSTMENT

V_OUT

V_IN

SG237T

SG337T

3-PIN HERMETIC TO-257

IG-PACKAGE(Isolated)

SG137AIG/883B -55°C to 125°C

SG137AIG/DESC -55°C to 125°C

V_OUT

V_IN

SG137AIG

-55°C to 125°C

SG137IG/883B

SG137IGDESC

SG137IG

ADJUST

(Note 4)

20-PIN CERAMIC (LCC)

LEADLESS CHIP CARRIER

L- PACKAGE

SG137AL/883B

SG137AL/DESC

SG137AL

SG137L/883B

SG137L/DESC

SG137L

-55°C to 125°C

20 19

1. V_OUT

2. V_OUT

3. N.C.

4. N.C.

5. N.C.

6. N.C.

7. N.C.

8. N.C.

9. N.C.

10. N.C.

11. V_IN

12. N.C.

13. N.C.

14. N.C.

15. N.C.

16. ADJUST

17. N.C.

18. N.C.

19. N.C.

20. N.C.

10 11 12 13

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

2. All parts are viewed from the top.

3. Product is also available in flatpack. Consult factory for price and delivery.

4. Both outputs must be externally connected together at the device terminals.

2/92 Rev 1.1 2/94

LINFINITY Microelectronics Inc.

11861 Western Avenue ∞ Garden Grove, CA 92841

(714) 898-8121 ∞ FAX: (714) 893-2570

SG137K/DESC [MICROSEMI]

相关型号：

SG137L

SG137L/883B

SG137L/DESC

SG137R

SG137R/883B

SG137R/DESC

SG137T

SG137T/883B

SG137T/DESC

SG138AG/883B

SG138AK

SG138AK/883B