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LM2940T-5.0

Description
Output type: Fixed Maximum input voltage: 26V Output current: 1A Output voltage (minimum/fixed): 5V
CategoryPower/power management    Low dropout linear regulator (they)   
File Size1MB,13 Pages
ManufacturerGuangdong Huaguan Semiconductor Co., Ltd.
Websitehttp://www.hgsemi.net/
Guangdong Huaguan Semiconductor Co., Ltd. was established in 2011. It is a quasi-high-tech enterprise specializing in the research and development, packaging, testing and sales of semiconductor devices. The company has an internationally advanced level of semiconductor discrete devices and integrated circuit packaging and testing production lines, and a technical team with rich experience in the design, packaging and testing of semiconductor devices. It has established long-term strategic cooperative relations with first-class companies in the same industry, and has formed a professional technical development team to engage in the development of new products and new technologies. The company's R&D project products include power management, operational amplifiers, audio amplifiers, interfaces and drivers, logic devices, memory, time base and clock, data acquisition, MOSFT and special circuits, which are mainly used in automotive electronics, instrumentation, network communications, industrial automation, LED lighting, switching power supplies, smart home appliances, gold card projects, smart transportation and other fields. Huaguan products are positioned as high-end quality, and have been well received by users in recent years. It is currently a high-end quality brand in the industry; HGSEMI&HGC is Huaguan's own brand. The establishment of an independent brand is more conducive to our service to customers, promoting the development of the company, and becoming a leading manufacturer in China's semiconductor industry.
Download Datasheet Parametric View All

LM2940T-5.0 Overview

Output type: Fixed Maximum input voltage: 26V Output current: 1A Output voltage (minimum/fixed): 5V

LM2940T-5.0 Parametric

Parameter NameAttribute value
Output typefixed
Maximum input voltage26V
Output current1A
Output configurationjust
Number of voltage regulators1
Output voltage (maximum)-
PSRR/ripple suppression60dB ~ 54dB(120Hz)
Output voltage (minimum/fixed value)5V
Pressure drop (maximum)1V @ 1A
Operating power current (maximum)-
Operating temperature-40℃ ~ 125℃

LM2940T-5.0 Preview

Download Datasheet
LM2940/LM2940C
LM2940/LM2940C 1A Low Dropout Regulator
General Description
The LM2940/LM2940C positive voltage regulator features
the ability to source 1A of output current with a dropout
voltage of typically 0.5V and a maximum of 1V over the
entire temperature range. Furthermore, a quiescent current
reduction circuit has been included which reduces the
ground current when the differential between the input volt-
age and the output voltage exceeds approximately 3V. The
quiescent current with 1A of output current and an input-
output differential of 5V is therefore only 30 mA. Higher
quiescent currents only exist when the regulator is in the
dropout mode (V
IN
− V
OUT
3V).
Designed also for vehicular applications, the LM2940/
LM2940C and all regulated circuitry are protected from re-
verse battery installations or 2-battery jumps. During line
transients, such as load dump when the input voltage can
momentarily exceed the specified maximum operating volt-
age, the regulator will automatically shut down to protect
both the internal circuits and the load. The LM2940/
LM2940C cannot be harmed by temporary mirror-image in-
sertion. Familiar regulator features such as short circuit and
thermal overload protection are also provided.
Features
n
n
n
n
n
n
n
Dropout voltage typically 0.5V
@
I
O
= 1A
Output current in excess of 1A
Output voltage trimmed before assembly
Reverse battery protection
Internal short circuit current limit
Mirror image insertion protection
P
+
Product Enhancement tested
Typical Application
00882203
*
Required if regulator is located far from power supply filter.
**
C
OUT
must be at least 22 µF to maintain stability. May be increased without bound to maintain regulation during transients. Locate as close as possible
to the regulator. This capacitor must be rated over the same operating temperature range as the regulator and the ESR is critical; see curve.
Connection Diagrams
(TO-220) Plastic Package
3-Lead SOT-223
Front View
Front View
http://www.hgsemi.com.cn
1
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