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參數資料
| 型號： | LM2596 |
| 廠商： | National Semiconductor, Corp. |
| 元件分類： | 穩壓器 |
| 英文描述： | SIMPLE SWITCHER Power Converter 150 KHz 3A Step-Down Voltage Regulator |
| 中文描述： | SIMPLE SWITCHER系列電源轉換器,150KHz，3A降壓穩壓器 |
| 文件頁數： | 1/31頁 |
| 文件大小： | 736K |
| 代理商： | LM2596 |
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LM2596
SIMPLE SWITCHER
Power Converter 150 kHz
3A Step-Down Voltage Regulator
General Description
The LM2596 series of regulators are monolithic integrated
circuits that provide all the active functions for a step-down
(buck) switching regulator, capable of driving a 3A 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 LM2596 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.
A standard series of inductors are available from several
different manufacturers optimized for use with the LM2596
series. This
feature
greatly
simplifies
the
design
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 80 μA standby cur-
rent. Self protection features include a two stage frequency
reducing current limit for the output switch and an over
temperature shutdown for complete protection under fault
conditions.
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 packages
n
Guaranteed 3A 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 80 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
On-card switching regulators
n
Positive to negative converter
Note:
Patent Number 5,382,918.
Typical Application
Versions)
(Fixed Output Voltage
01258301
SIMPLE SWITCHER
and
Switchers Made Simple
are registered trademarks of National Semiconductor Corporation.
May 2002
L
3
2002 National Semiconductor Corporation
DS012583
www.national.com
相關PDF資料 |
PDF描述 |
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| LM2596S-5.0 | SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator |
| LM2596S-12 | CA-BAYONET |
| LM2596S-3.3 | SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator |
| LM2596S-ADJ | SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator |
| LM2598T-12 | SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator, with Features |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LM2596ADPBCKGEVB | 功能描述:BOARD EVAL LM2596ADJ BUCK D2PAK RoHS:是 類別:編程器，開發系統 >> 評估板 - DC/DC 與 AC/DC（離線）SMPS 系列:* 產品培訓模塊:Obsolescence Mitigation Program 標準包裝:1 系列:True Shutdown™ 主要目的:DC/DC，步升 輸出及類型:1，非隔離 功率 - 輸出:- 輸出電壓:- 電流 - 輸出:1A 輸入電壓:2.5 V ~ 5.5 V 穩壓器拓撲結構:升壓 頻率 - 開關:3MHz 板類型:完全填充 已供物品:板 已用 IC / 零件:MAX8969 |
| LM2596ATPBCKGEVB | 功能描述:BOARD EVAL LM2596ADJ BUCK TO-220 RoHS:是 類別:編程器，開發系統 >> 評估板 - DC/DC 與 AC/DC（離線）SMPS 系列:* 產品培訓模塊:Obsolescence Mitigation Program 標準包裝:1 系列:True Shutdown™ 主要目的:DC/DC，步升 輸出及類型:1，非隔離 功率 - 輸出:- 輸出電壓:- 電流 - 輸出:1A 輸入電壓:2.5 V ~ 5.5 V 穩壓器拓撲結構:升壓 頻率 - 開關:3MHz 板類型:完全填充 已供物品:板 已用 IC / 零件:MAX8969 |
| LM2596DSADJG | 功能描述:直流/直流開關調節器 3A BUCK SWCH 150KHZ RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| LM2596DSADJR4G | 功能描述:直流/直流開關調節器 3A BUCK SWCH 150KHZ RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| LM2596S | 制造商:Texas Instruments 功能描述: |
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