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LM2596 の電気的特性と機能

LM2596のメーカーはHTCです、この部品の機能は「Step-Down Switching Regulator」です。


製品の詳細 ( Datasheet PDF )

部品番号 LM2596
部品説明 Step-Down Switching Regulator
メーカ HTC
ロゴ HTC ロゴ 




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LM2596 Datasheet, LM2596 PDF,ピン配置, 機能
3.0A, 150kHz, Step-Down Switching Regulator
LM2596
FEATURES
3.3V, 5.0V, 12V, and Adjustable Output Versions
Adjustable Version Output Voltage Range, 1.2 to 37V
+/- 4%. Maximum Over Line and Load Conditions
Guaranteed 3.0A Output Current
Wide Input Voltage Range
Requires Only 4 External Components
150kHz Fixed Frequency Internal Oscillator
TTL Shutdown Capability, Low Power Standby Mode
High Efficiency
Uses Readily Available Standard Inductors
Thermal Shutdown and Current Limit Protection
Moisture Sensitivity Level 3
TO-220 PKG
15
TO-220V PKG
1
5
Applications
Simple High-Efficiency Step-Down(Buck) Regulator
Efficient Pre-Regulator for Linear Regulators
On-Card Switching Regulators
Positive to Negative Converter(Buck-Boost)
Negative Step-Up Converters
Power Supply for Battery Chargers
TO-263 PKG
1
5
1. Vin 2. Output 3. Ground
4. Feedback 5. On/Off
DESCRIPTION
ORDERING INFORMATION
The LM2596 series of regulators are monolithic integrated
Device
Marking
Package
circuits ideally suited for easy and convenient design of a
LM2596T-X.X LM2596-X.X
TO-220
step-down switching regulator(buck converter).
LM2596TV-X.X LM2596-X.X
TO-220V
All circuits of this series are capable of driving a 3.0A load
LM2596R
LM2596-X.X
TO-263
with excellent line and load regulation. These devices are
available in fixed output voltages of 3.3V, 5.0V,12V,
and an adjustable output version.
These regulators were designed to minimize the number of external components to simplify the
power supply design. Standard series of inductors optimized for use with the LM2596 are offered
by several different inductor manufacturers.
Since the LM2596 converter is a switch-mode power supply, its efficiency is significantly higher in
comparison with popular three-terminal limear regulators, especially with higher input voltages.
In many cases, the power dissipated is so low that no heatsink is required or its size could
be reduced dramatically. A standard series of inductors optimized for use with the TJ2596 are
available from several different manufacturers. This feature greatly simplifies the design of
switch-mode power supplies. The LM2596 features include a guaranteed +/- 4% tolerance
on output voltage within specified input voltages and output load conditions, and +/-15% on the
oscillator frequency (+/- 2% over 0℃ to 125℃).
External shutdown is included, featuring 80㎂ (typical) standby current. Self protection features include
a two stage frequency reducing current limit for output switch and an over temperature shutdown for complete
protection under fault conditions.
Dec. 2009 - Rev.1.3.1
1
HTC
http://www.Datasheet4U.com

1 Page





LM2596 pdf, ピン配列
3.0A, 150kHz, Step-Down Switching Regulator
LM2596
OPERATING RATINGS (Operating Ratings indicate conditions for which the device is intended to be functional,
but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical
Characteristics.)
Rating
Operating Junction Temperature Range
Supply Voltage
Symbol
TJ
Vin
Value
-40 to +125
40
Unit
V
ELECTRICAL CHARACTERISTICS / SYSTEM PARAMETERS ([Note 1] Test Circuit Figure 2)
(Unless otherwise specified, Vin = 12V for the 3.3V, 5.0V, and Adjustable version, Vin = 25V for the 12V versio
ILoad = 500 mA. For typical values TJ = 25°C, for min/max values TJ is the operating junction temperature
range that applies [Note 2], unless otherwise noted.)
Characteristics
LM2596-3.3V ([Note 1] Test Circuit Figure 2)
Output Voltage (Vin = 12V, ILOAD=0.5A, TJ=25℃)
Output Voltage (6.0V≤Vin≤40V, 0.5A≤ILOAD≤3.0A
TJ=25℃
TJ= -40℃ ~ +125℃
Efficiency (Vin=12V, ILOAD=3.0A)
Symbol Min TYP Max Unit
Vout 3.234 3.3 3.366 V
Vout
3.168 3.3 3.432 V
3.135 - 3.465
η -7 3 - %
LM2596-5.0V ([Note 1] Test Circuit Figure 2)
Output Voltage (Vin = 12V, ILOAD=0.5A, TJ=25℃)
Output Voltage (8.0V≤Vin≤40V, 0.5A≤ILOAD≤3.0A
TJ=25℃
TJ= -40℃ ~ +125℃
Efficiency (Vin=12V, ILOAD=3.0A)
Vout
Vout
η
4.9
4.8
4.75
-8
5.0
5.0
-
0
5.1 V
5.2
5.25
-
V
%
LM2596-12V ([Note 1] Test Circuit Figure 2)
Output Voltage (Vin = 25V, ILOAD=0.5A, TJ=25℃)
Output Voltage (15V≤Vin≤40V, 0.5A≤ILOAD≤3.0A
TJ=25℃
TJ= -40℃ ~ +125℃
Efficiency (Vin=12V, ILOAD=3.0A)
Vout 11.76 12 12.24 V
Vout
11.52 12 12.48 V
11.4 - 12.6
η -9 0 - %
LM2596-ADJ ([Note 1] Test Circuit Figure 2)
Feedback Voltage (Vin=12V, ILOAD=0.5A, TJ=25℃)
Feedback Voltage(8.0V≤Vin≤40V, 0.5A≤ILOAD≤3.0A, Vout=5.0V)
TJ=25℃
TJ= -40℃ ~ +125℃
Efficiency (Vin=12V, ILOAD=3.0A, Vout=5.0V)
Vout
Vout
η
1.217
1.193
1.18
-7
1.23
1.23
-
3
1.243
1.267
1.28
-
V
V
%
3
HTC


3Pages


LM2596 電子部品, 半導体
3.0A, 150kHz, Step-Down Switching Regulator
TYPICAL PERFORMANCE CHARACTERISTICS (Circuit of Figure 2)
Feedback Pin Bias Current
LM2596
6
HTC

6 Page



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