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參數(shù)資料
| 型號： | LM2595 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Octal Buffers/Drivers With 3-State Outputs 20-SOIC -40 to 85 |
| 中文描述： | SIMPLE SWITCHER系列電源轉(zhuǎn)換器150千赫1A步降穩(wěn)壓器 |
| 文件頁數(shù)： | 1/29頁 |
| 文件大小： | 935K |
| 代理商： | LM2595 |
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LM2595
SIMPLE SWITCHER
Power Converter 150 kHz
1A Step-Down Voltage Regulator
General Description
The LM2595 series of regulators are monolithic integrated
circuits that provide all the active functions for a step-down
(buck) switching regulator, capable of driving a 1A load with
excellent line and load regulation. These devices are avail-
able in fixed output voltages of 3.3V, 5V, 12V, and an adjust-
able output version.
Requiring a minimum number of external components, these
regulators are simple to use and include internal frequency
compensation
, and a fixed-frequency oscillator.
The LM2595 series operates at a switching frequency of
150 kHz thus allowing smaller sized filter components than
what would be needed with lower frequency switching regu-
lators. Available in a standard 5-lead TO-220 package with
several different lead bend options, and a 5-lead TO-263
surface mount package. Typically, for output voltages less
than 12V, and ambient temperatures less than 50C, no heat
sink is required.
A standard series of inductors are available from several dif-
ferent manufacturers optimized for use with the LM2595 se-
ries.
This
feature
greatly
switch-mode power supplies.
Other features include a guaranteed
±
4% tolerance on out-
put voltage under specified input voltage and output load
conditions, and
±
15% on the oscillator frequency. External
shutdown is included, featuring typically 85 μA stand-by cur-
rent. Self protection features include a two stage frequency
reducing current limit for the output switch and an over tem-
perature shutdown for complete protection under fault condi-
tions.
simplifies
the
design
of
Features
n
3.3V, 5V, 12V, and adjustable output versions
n
Adjustable version output voltage range, 1.2V to 37V
±
4% max over line and load conditions
n
Available in TO-220 and TO-263 (surface mount)
packages
n
Guaranteed 1A output load current
n
Input voltage range up to 40V
n
Requires only 4 external components
n
Excellent line and load regulation specifications
n
150 kHz fixed frequency internal oscillator
n
TTL shutdown capability
n
Low power standby mode, I
Q
typically 85 μA
n
High efficiency
n
Uses readily available standard inductors
n
Thermal shutdown and current limit protection
Applications
n
Simple high-efficiency step-down (buck) regulator
n
Efficient pre-regulator for linear regulators
n
On-card switching regulators
n
Positive to negative converter
Note:
Patent Number 5,382,918.
Typical Application
(Fixed Output Voltage Versions)
SIMPLE SWITCHER
and
Switchers Made Simple
are registered trademarks of National Semiconductor Corporation.
DS012565-1
May 1999
L
1999 National Semiconductor Corporation
DS012565
www.national.com
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM2596R | 3.0A, 150Khz, Step-Down Switching Regulator |
| LM2597N-12 | SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator, with Features |
| LM2597HVN-12 | SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator, with Features |
| LM2597HVN-3.3 | SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator, with Features |
| LM2597HVN-5.0 | SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator, with Features |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2595ADPBCKGEVB | 功能描述:電源管理IC開發(fā)工具 LM2595ADJ D2PAK BUCK DB RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| LM2595ATPBCKGEVB | 功能描述:電源管理IC開發(fā)工具 LM2595ADJ TO220 BUCK DB RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| LM2595DSADJG | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 1A BUCK SW REG 150KHZ RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| LM2595DSADJR4G | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 1A BUCK SW REG 150KHZ RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| LM2595S12 | 制造商:Texas Instruments 功能描述:SWITCHING REG, 1A 12V, SMD, 2595 制造商:Texas Instruments 功能描述:SWITCHING REG, 1A 12V, SMD, 2595; Primary Input Voltage:24V; No. of Outputs:1; Output Voltage:12V; Output Current:1A; Voltage Regulator Case Style:TO-263; No. of Pins:5; Operating Temperature Min:-25C; Operating Temperature ;RoHS Compliant: Yes |
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