Datasheet > LM2937ET-3.3/NOPB

LM2937ET-3.3/NOPB

更新时间： 2024-11-21 12:09:43

品牌	Logo	应用领域
德州仪器 - TI		稳压器
页数	文件大小	规格书
19页	1942K
描述
LM2937-2.5, LM2937-3.3 400mA and 500mA Voltage Regulators

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LM2937-2.5, LM2937-3.3

www.ti.com

SNVS015E –FEBRUARY 1998–REVISED APRIL 2013

LM2937-2.5, LM2937-3.3 400mA and 500mA Voltage Regulators

Check for Samples: LM2937-2.5, LM2937-3.3

FEATURES

DESCRIPTION

The LM2937-2.5 and LM2937-3.3 are positive voltage

•

Fully Specified for Operation Over −40°C to

+125°C

regulators capable of supplying up to 500 mA of load

current. Both regulators are ideal for converting a

common 5V logic supply, or higher input supply

voltage, to the lower 2.5V and 3.3V supplies to power

VLSI ASIC's and microcontrollers. Special circuitry

has been incorporated to minimize the quiescent

current to typically only 10 mA with a full 500 mA load

current when the input to output voltage differential is

greater than 5V.

Output Current in Excess of 500 mA (400mA

for SOT-223 package)

Output Trimmed for 5% Tolerance Under All

Operating Conditions

Wide Output Capacitor ESR Range, 0.01Ω up

to 5Ω

Internal Short Circuit and Thermal Overload

Protection

The LM2937 requires an output bypass capacitor for

stability. As with most regulators utilizing a PNP pass

transistor, the ESR of this capacitor remains a critical

design parameter, but the LM2937-2.5 and LM2937-

3.3 include special compensation circuitry that

relaxes ESR requirements. The LM2937 is stable for

all ESR ratings less than 5Ω. This allows the use of

low ESR chip capacitors.

•

Reverse Battery Protection

60V Input Transient Protection

Mirror Image Insertion Protection

The regulators are also suited for automotive

applications, with built in protection from reverse

battery connections, two-battery jumps and up to

+60V/−50V load dump transients. Familiar regulator

features such as short circuit and thermal shutdown

protection are also built in.

Connection Diagrams

Figure 1. TO-220 Plastic Package

Figure 2. SOT-223 Plastic Package

Front View

See Package Number DCY0004A

Front View

See Package Number NDE0003B

Figure 3. DDPAK/TO-263 Surface-Mount Package

Top View

Figure 4. DDPAK/TO-263 Surface-Mount Package

Side View

See Package Number KTT0003B

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...19

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LM2937ET-3.3/NOPB 替代型号

型号	品牌	替代类型	描述	数据表
LM2937ET-3.3	TI	类似代替	LM2937-2.5, LM2937-3.3 400mA and 500mA Voltage Regulators
MIC29150-3.3WT	MICREL	类似代替	High-Current Low-Dropout Regulators
MIC29300-3.3WT	MICREL	类似代替	High-Current Low-Dropout Regulators

与LM2937ET-3.3/NOPB相关器件

型号	品牌	获取价格	描述	数据表
LM2937ET-5.0	TI	获取价格	LM2937 500 mA Low Dropout Regulator
LM2937ET-5.0	NSC	获取价格	500 mA Low Dropout Regulator
LM2937ET-5.0/NOPB	TI	获取价格	LM2937 500 mA Low Dropout Regulator
LM2937ET-5.0/NOPB	NSC	获取价格	IC VREG 5 V FIXED POSITIVE LDO REGULATOR, 1 V DROPOUT, PSFM3, ROHS COMPLIANT, PLASTIC, TO-
LM2937ET-8.0	TI	获取价格	LM2937 500 mA Low Dropout Regulator
LM2937ET-8.0	NSC	获取价格	500 mA Low Dropout Regulator
LM2937ET-8.0/NOPB	TI	获取价格	LM2937 500 mA Low Dropout Regulator
LM2937G-10-AA3-R	UTC	获取价格	500mA LOW DROPOUT VOLTAGE REGULATOR
LM2937G-10-AA3-T	UTC	获取价格	500mA LOW DROPOUT VOLTAGE REGULATOR
LM2937G-10-TA3-R	UTC	获取价格	500mA LOW DROPOUT VOLTAGE REGULATOR

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