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LM340 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
描述:
节省空间的高电压、高电流 3 引脚正电压稳压器
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引脚图在P3Hot
典型应用电路图在P14P15
原理图在P12
封装尺寸在P22P23P25P26
标记信息在P22P23P24
封装信息在P21P22P23P24P25P26
技术参数、封装参数在P4
应用领域在P1P4P14P15
电气规格在P5P6P7P8
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LM340数据手册
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Pin 1. Input
2. Ground
3. Output
Tab/Case is Ground or Output
1
3
3
1
TO-3
SOT-223
TO-220
TO-263
2
1
2
2
3
1
2
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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
LM340
,
LM340A
,
LM7805
,
LM7812
,
LM7815
SNOSBT0L –FEBRUARY 2000–REVISED SEPTEMBER 2016
LM340, LM340A and LM7805 Family Wide V
IN
1.5-A Fixed Voltage Regulators
1
1 Features
1
• Output Current up to 1.5 A
• Available in Fixed 5-V, 12-V, and 15-V Options
• Output Voltage Tolerances of ±2% at T
J
= 25°C
(LM340A)
• Line Regulation of 0.01% / V of at 1-A Load
(LM340A)
• Load Regulation of 0.3% / A (LM340A)
• Internal Thermal Overload, Short-Circuit and SOA
Protection
• Available in Space-Saving SOT-223 Package
• Output Capacitance Not Required for Stability
2 Applications
• Industrial Power Supplies
• SMPS Post Regulation
• HVAC Systems
• AC Inventors
• Test and Measurement Equipment
• Brushed and Brushless DC Motor Drivers
• Solar Energy String Invertors
SPACE
Available Packages
3 Description
The LM340 and LM7805 Family monolithic 3-terminal
positive voltage regulators employ internal current-
limiting, thermal shutdown and safe-area
compensation, making them essentially indestructible.
If adequate heat sinking is provided, they can deliver
over 1.5-A output current. They are intended as fixed
voltage regulators in a wide range of applications
including local (on-card) regulation for elimination of
noise and distribution problems associated with
single-point regulation. In addition to use as fixed
voltage regulators, these devices can be used with
external components to obtain adjustable output
voltages and currents.
Considerable effort was expended to make the entire
series of regulators easy to use and minimize the
number of external components. It is not necessary to
bypass the output, although this does improve
transient response. Input bypassing is needed only if
the regulator is located far from the filter capacitor of
the power supply.
LM7805 is also available in a higher accuracy and
better performance version (LM340A). Refer to
LM340A specifications in the LM340A Electrical
Characterisitcs table.
Device Information
(1)
PART NUMBER PACKAGE BODY SIZE (NOM)
LM340x
LM7805 Family
DDPAK/TO-263 (3) 10.18 mm × 8.41 mm
SOT-23 (4) 6.50 mm × 3.50 mm
TO-220 (3) 14.986 mm × 10.16 mm
TO-3 (2) 38.94 mm x 25.40 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Fixed Output Voltage Regulator
*Required if the regulator is located far from
the power supply filter.
**Although no output capacitor is needed
for stability, it does help transient response.
(If needed, use 0.1-μF, ceramic disc).
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