Datasheet > LM320-N

LM320-N

更新时间： 2024-02-23 05:04:31

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LM120/LM320-N Series 3-Terminal Negative Regulators

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LM320-N 数据手册

LM120, LM320-N

www.ti.com

SNVS756C –APRIL 1998–REVISED APRIL 2013

LM120/LM320-N Series 3-Terminal Negative Regulators

Check for Samples: LM120, LM320-N

Exceptional effort has been made to make the LM120

FEATURES

Series immune to overload conditions. The regulators

have current limiting which is independent of

temperature, combined with thermal overload

protection. Internal current limiting protects against

momentary faults while thermal shutdown prevents

junction temperatures from exceeding safe limits

during prolonged overloads.

•

Preset Output Voltage Error Less than ±3%

Preset Current Limit

Internal Thermal Shutdown

Operates with Input-Output Voltage Differential

down to 1V

•

Excellent Ripple Rejection

Although primarily intended for fixed output voltage

applications, the LM120 Series may be programmed

for higher output voltages with a simple resistive

divider. The low quiescent drain current of the

devices allows this technique to be used with good

regulation.

Low Temperature Drift

Easily Adjustable to Higher Output Voltage

DESCRIPTION

The LM120 series are three-terminal negative

regulators with a fixed output voltage of −5V, −12V,

and −15V, and up to 1.5A load current capability.

Where other voltages are required, the LM137 and

LM137HV series provide an output voltage range of

−1.2V to −47V.

Table 1. LM120 Series Packages and Power

Capability

Device

Package

Rated Power

Dissipation

Design

Load

Current

The LM120 need only one external component—a

compensation capacitor at the output, making them

easy to apply. Worst case specifications on output

voltage deviation due to any combination of line, load

or temperature variation assure satisfactory system

operation.

LM120/LM320- TO-3 (NDS)

20W

1.5A

TO (NDT)

0.5A

1.5A

LM320-N

TO-220 (NDE)

15W

Typical Applications

*Required if regulator is separated from

filter capacitor by more than 3 inches. For

value given, capacitor must be solid

tantalum. 25 μF aluminum electrolytic may

be substituted.

†Required for stability. For value given,

capacitor must be solid tantalum. 25 μF

aluminum electrolytic may be substituted.

Values given may be increased without

limit.

For output capacitance in excess of 100

μF, a high current diode from input to

output (1N4001, etc.) will protect the

regulator from momentary input shorts.

Figure 1. Dual Trimmed Supply

Figure 2. Fixed Regulator

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...22

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与LM320-N相关器件

型号	品牌	获取价格	描述	数据表
LM320T-12	NSC	获取价格	Series 3-Terminal Negative Regulators
LM320T-12/NOPB	NSC	获取价格	12V FIXED NEGATIVE REGULATOR, PSFM3, LEAD FREE, PLASTIC, TO-220, 3 PIN
LM320T-15	TI	获取价格	LM120/LM320-N Series 3-Terminal Negative Regulators
LM320T-15	NSC	获取价格	Series 3-Terminal Negative Regulators
LM320T-15/NOPB	NSC	获取价格	IC VREG 15 V FIXED NEGATIVE REGULATOR, PSFM3, LEAD FREE, PLASTIC, TO-220, 3 PIN, Fixed Neg
LM320T-15/NOPB	TI	获取价格	Series 3-Terminal Negative Regulators
LM320T-15MWC	TI	获取价格	IC VREG 15 V FIXED NEGATIVE REGULATOR, UUC, WAFER, Fixed Negative Single Output Standard R
LM320T-15NOPB	TI	获取价格	LM120/LM320-N Series 3-Terminal Negative Regulators
LM320T-5.0	NSC	获取价格	Series 3-Terminal Negative Regulators
LM320T-5.0MWC	NSC	获取价格	暂无描述

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