LM137HVH/883 - NATIONAL SEMICONDUCTOR

LM137HVQML

LM137HVQML 3-Terminal Adjustable Negative Regulators (High Voltage)

Literature Number: SNVS314

LM137HVQML

December 16, 2010

3-Terminal Adjustable Negative Regulators (High Voltage)

General Description

The LM137HV is an adjustable 3-terminal negative voltage

regulator capable of supplying in excess of −1.5A over an

output voltage range of −47V to −1.2V. This regulators is ex-

ceptionally easy to apply, requiring only 2 external resistors

to set the output voltage and 1 output capacitor for frequency

compensation. The circuit design has been optimized for ex-

cellent regulation and low thermal transients. Further, the

LM137HV features internal current limiting, thermal shutdown

and safe-area compensation, making them virtually blowout-

proof against overloads.

The LM137HV serves a wide variety of applications including

local on-card regulation, programmable-output voltage regu-

lation or precision current regulation. The LM137HV is an

ideal complement to the LM117HV adjustable positive regu-

lator.

Features

■Output voltage adjustable from −47V to −1.2V

■1.5A output current guaranteed, −55°C ≤ TJ ≤ +150°C

■Line regulation typically 0.01%/V

■Load regulation typically 0.3%

■Excellent thermal regulation, 0.002%/W

■77 dB ripple rejection

■Excellent rejection of thermal transients

■50 ppm/°C temperature coefficient

■Temperature-independent current limit

■Internal thermal overload protection

■Standard 3-lead transistor package

■Output short circuit protected

Ordering Information

NS Part Number SMD Part Number NS Package Number Package Description

LM137HVH/883 H03A T0–39 Metal Can

LM137HVK MD8 (Note 1) Bare Die

Note 1: FOR ADDITIONAL DIE INFORMATION, PLEASE VISIT THE HI REL WEB SITE AT: www.national.com/analog/space/level_die

LM137HVQML 3-Terminal Adjustable Negative Regulators (High Voltage)

Connection Diagrams

See Physical Dimensions section for further information

TO-39

Metal Can Package

20122506

Bottom View

See NS Package Number H03A

TO-3

Metal Can Package

20122505

Bottom View

See NS Package Number K02C

Typical Applications

Adjustable Negative Voltage Regulator

20122501

20122525

†C1 = 1 μF solid tantalum or 10 μF aluminum electrolytic required for stability. Output capacitors in the range of 1 μF to 1000 μF of aluminum or tantalum electrolytic

are commonly used to provide improved output impedance and rejection of transients.

*C2 = 1 μF solid tantalum is required only if regulator is more than 4″ from power-supply filter capacitor.

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LM137HVQML

Absolute Maximum Ratings (Note 2)

Power Dissipation(Note 3) Internally limited

Input—Output Voltage Differential 50V

Operating Ambient Temperature Range −55°C ≤ TA ≤ +125°C

Maximum Junction Temperature Range +150°C

Storage Temperature −65°C ≤ TA ≤ +150°C

Lead Temperature (Soldering, 10 sec.) 300°C

Thermal Resistance

θJA

H-pkg. (Still Air @ 0.5W) 174°C/W

H-pkg. (500LF / Min Air Flow @ 0.5W) 64°C/W

K-pkg. (Still Air @ 0.5W) 42°C/W

K-pkg. (500LF / Min Air Flow @ 0.5W) 14°C/W

θJC

H-pkg. (@ 1.0W) 15°C/W

K-pkg. 4°C/W

Package Weight (Typical)

H-pkg. 955mg

K-pkg 12,750mg

ESD Rating(Note 4) 4000V

Quality Conformance Inspection

Mil-Std-883, Method 5004 and Method 5005

Subgroup Description Temp (°C)

1 Static tests at +25°C

2 Static tests at +125°C

3 Static tests at -55°C

4 Dynamic tests at +25°C

5 Dynamic tests at +125°C

6 Dynamic tests at -55°C

7 Functional tests at +25°C

8A Functional tests at +125°C

8B Functional tests at -55°C

9 Switching tests at +25°C

10 Switching tests at +125°C

11 Switching tests at -55°C

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LM137HVQML

LM137HVH 883 Electrical Characteristics

DC Parameters

The following conditions apply, unless otherwise specified. VIN = −4.0V, IO = 0.53A, VO = VRef

Symbol Parameter Conditions Notes Min Max Unit Sub-

groups

VRef Reference Voltage

VIN = -4.25V, IO = 8 mA -1.272 -1.23 V 1

-1.28 -1.225 V 2, 3

VIN = -42V, IO = 8mA -1.272 -1.23 V 1

-1.28 -1.225 V 2, 3

IQMinimum Load Current

VO = -1.7V, VIN = -4.25V 3.0 mA 1, 2, 3

VO = -1.7V, VIN = -11.75V 3.0 mA 1, 2, 3

VO = -1.7V, VIN = -42V 5.0 mA 1, 2, 3

RLine Line Regulation -42V ≤ VIN ≤ -4.25V, IO = 8mA 9.4 mV 1, 2, 3

IAdj Adjustment Pin Current

VIN = -42V, IO = 8mA 100 µA 1, 2, 3

VIN = -4.25V, IO = 8mA 100 µA 1, 2, 3

VIN = -54V, IO = 8mA 100 µA 1

ΔIAdj Adjustment Pin Current Change -42V ≤ VIN ≤ -4.25V, IL = 8mA 6.0 µA 1, 2, 3

VIN = -6.25V, 8mA ≤ IO ≤ 0.53A 5.0 µA 1, 2, 3

-54V ≤ VIN ≤ -4.25V, IO = 8mA 6.0 µA 1

RLoad Load Regulation VIN = -54V, 10mA ≤ IO ≤ 60mA 25 mV 1

VIN = -6.25V, 8mA ≤ IO ≤ 0.53A 25 mV 1

VRth Thermal Regulation IO = 0.53A, VIN = -14.5V 5 mV 1

ICL Current Limit VIN ≤ -14.25 (Note 5) 0.5 1.6 A 1

VIN = -51.25V (Note 5) 0.1 0.5 A 1

AC Parameters

Symbol Parameter Conditions Notes Min Max Unit Sub-

groups

RRRipple Rejection VIN = -6.25V, VO = VRef, f = 120Hz,

eI = 1VRMS, IL = 125mA

(Note 6,

Note 7)66 dB 4, 5, 6

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LM137HVQML

LM137HVK 883 Electrical Characteristics

DC Parameters

The following conditions apply, unless otherwise specified. VIN = −40V, IL = 8.0mA, VO = VRef = −1.25V (nominal)

Symbol Parameter Conditions Notes Min Max Unit Sub-

groups

VRef Reference Voltage

VIN = -4.25V 1.272 -1.23 V 1

-1.28 -1.225 V 2, 3

VIN = -42V -1.272 -1.23 V 1

VIN = -41.3V -1.28 -1.225 V 2, 3

RLine Line Regulation -42V ≤ VIN ≤ -4.25V 9.4 mV 1

-41.3V ≤ VIN ≤ -4.25V 9.4 mV 2, 3

RLoad Load Regulation VIN = -54V, 10mA ≤ IO ≤ 110mA -25 25 mV 1

VIN = -6.25V, 8mA ≤ IO ≤ 1.5A -25 25 mV 1, 2, 3

VRth Thermal Regulation IO = 1.5A, VIN = -14.5V,

t = 10mS

-5.0 5.0 mV 1

IAdj Adjustment Pin Current

VIN = -42V 100 µA 1

VIN = -41.3V 100 µA 2, 3

VIN = -4.25V 100 µA 1, 2, 3

VIN = -54V 100 µA 1

ΔIAdj Adjustment Pin Current Change

-42V ≤ VIN ≤ -4.25V -5.0 5.0 µA 1

-41.3V ≤ VIN ≤ -4.25V -5.0 5.0 µA 2, 3

-54V ≤ VIN ≤ -4.25V -6.0 6.0 µA 1

VIN = -6.25V, 8mA ≤ IO ≤ 1.5A -5.0 5.0 µA 1, 2, 3

IQMinimum Load Current

VO = 1.7V, VIN = -4.25V 3.0 mA 1, 2, 3

VO = -1.7V, VIN = -11.75V 3.0 mA 1, 2, 3

VO = -1.7V, VIN = -42V 5.0 mA 1

VO = -1.7V, VIN = -41.3V 5.0 mA 2, 3

ISC Short Circuit VIN = -5V -2.85 -1.6 A 1

-3.5 -1.6 A 2, 3

VIN = -51.25V (Note 5)-0.8 -0.2 A 1

AC Parameters:

The following conditions apply, unless otherwise specified. VIN = −40V, IL = 8.0mA, VO = VRef = −1.25V (nominal)

Symbol Parameter Conditions Notes Min Max Unit Sub-

groups

RRRipple Rejection

VIN = -6.25V, VO = VRef,

f = 120Hz, ein = 1V RMS,

IL = 0.5A

(Note 6,

Note 7)66 dB 4, 5, 6

Note 2: “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device

is functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed

specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test

conditions.

Note 3: The maximum power dissipation must be derated at elevated temperatures and is dictated by TJmax (maximum junction temperature), θJA (package

junction to ambient thermal resistance, and TA (ambient temperature). The maximum allowable power dissipation at any temperature is PDmax = (TJmax − TA) /

θJA or the number given in the Absolute Maximum Ratings, whichever is lower.

Note 4: Human body model, 100pF discharged through 1.5KΩ

Note 5: Guaranteed parameter not tested.

Note 6: Tested at +25°C, guaranteed, but not tested at +125°C and −55°C

Note 7: Bench test per (SG)RPI-3–362 Use TDN 70256657 (NSSG)

Note 8: Group “A” sample only, test at all temperature.

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LM137HVQML

Schematic Diagram

20122502

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LM137HVQML

Thermal Regulation

When power is dissipated in an IC, a temperature gradient

occurs across the IC chip affecting the individual IC circuit

components. With an IC regulator, this gradient can be espe-

cially severe since power dissipation is large. Thermal regu-

lation is the effect of these temperature gradients on output

voltage (in percentage output change) per Watt of power

change in a specified time. Thermal regulation error is inde-

pendent of electrical regulation or temperature coefficient,

and occurs within 5 ms to 50 ms after a change in power dis-

sipation. Thermal regulation depends on IC layout as well as

electrical design. The thermal regulation of a voltage regulator

is defined as the percentage change of VOUT, per Watt, within

the first 10 ms after a step of power is applied. The

LM137HV's specification is 0.02%/W, max.

In Figure 1, a typical LM137HV's output drifts only 3 mV (or

0.03% of VOUT = −10V) when a 10W pulse is applied for

10 ms. This performance is thus well inside the specification

limit of 0.02%/W x 10W = 0.2% max. When the 10W pulse is

ended, the thermal regulation again shows a 3 mV step as the

LM137HV chip cools off. Note that the load regulation error of

about 8 mV (0.08%) is additional to the thermal regulation er-

ror. In Figure 2, when the 10W pulse is applied for 100 ms,

the output drifts only slightly beyond the drift in the first 10 ms,

and the thermal error stays well within 0.1% (10 mV).

20122503

LM137HV, VOUT = −10V

VIN−VOUT = −40V

IL = 0A→0.25A→0A

Vertical sensitivity, 5 mV/div

FIGURE 1.

20122504

LM137HV, VOUT = −10V

VIN−VOUT = −40V

IL = 0A→0.25A→0A

Horizontal sensitivity, 20 ms/div

FIGURE 2.

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LM137HVQML

Typical Applications

Adjustable High Voltage Regulator

20122507

Full output current not available at high input-output voltages

*The 10 μF capacitors are optional to improve ripple rejection

Current Regulator

20122508

Adjustable Current Regulator

20122509

Negative Regulator with Protection Diodes

20122510

*When CL is larger than 20 μF, D1 protects the LM137HV in case the input

supply is shorted

**When C2 is larger than 10 μF and −VOUT is larger than −25V, D2 protects

the LM137HV is case the output is shorted

High Stability −40V Regulator

20122511

*Use resistors with good tracking TC < 25 ppm/°C

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LM137HVQML

Typical Performance Characteristics (H and K-STEEL Package)

Load Regulation

20122513

Current Limit

20122514

Adjustment Current

20122515

Dropout Voltage

20122516

Temperature Stability

20122517

Minimum Operating Current

20122518

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LM137HVQML

Ripple Rejection

20122519

Ripple Rejection

20122520

Ripple Rejection

20122521

Output Impedance

20122522

Line Transient Response

20122523

Load Transient Response

20122524

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LM137HVQML

Revision History

Date Released Revision Section Changes

12/16/2010 A New Release, Corporate format 2 MDS data sheets converted into one Corp. Data

sheet format. MNLM137HV-K rev 0A0,

MNLM137HV-H rev 2A0 MDS datasheets will be

archived.

11 www.national.com

LM137HVQML

Physical Dimensions inches (millimeters) unless otherwise noted

Metal Can Package (H)

NS Package Number H03A

Metal Can Package (K)

NS Package Number K02C

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LM137HVQML

Notes

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LM137HVQML

Notes

LM137HVQML 3-Terminal Adjustable Negative Regulators (High Voltage)

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