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參數資料
| 型號： | LM3352MTCX-3.0/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩壓器 |
| 英文描述： | SWITCHED CAPACITOR REGULATOR, 1350 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | 1.10 MM HEIGHT, TSSOP-16 |
| 文件頁數： | 1/12頁 |
| 文件大小： | 545K |
| 代理商： | LM3352MTCX-3.0/NOPB |
LM3352
Regulated 200 mA Buck-Boost Switched Capacitor
DC/DC Converter
General Description
The LM3352 is a CMOS switched capacitor DC/DC con-
verter that produces a regulated output voltage by automati-
cally stepping up (boost) or stepping down (buck) the input
voltage. It accepts an input voltage between 2.5V and 5.5V.
The LM3352 is available in three standard output voltage
versions: 2.5V, 3.0V and 3.3V. If other output voltage options
between 1.8V and 4.0V are desired, please contact your
National Semiconductor representative.
The LM3352’s proprietary buck-boost architecture enables
up to 200 mA of load current at an average efficiency greater
than 80%. Typical operating current is only 400 A and the
typical shutdown current is only 2.5 A.
The LM3352 is available in a 16-pin TSSOP package. This
package has a maximum height of only 1.1 mm.
The high efficiency of the LM3352, low operating and shut-
down currents, small package size, and the small size of the
overall solution make this device ideal for battery powered,
portable, and hand-held applications.
Features
n
Regulated V
OUT with ±3% accuracy
n
Standard output voltage options: 2.5V, 3.0V and 3.3V
n
Custom output voltages available from 1.8V to 4.0V in
100 mV increments
n
2.5V to 5.5V input voltage
n
Up to 200 mA output current
n >
80% average efficiency
n
Uses few, low-cost external components
n
Very small solution size
n
400 A typical operating current
n
2.5 A typical shutdown current
n
1 MHz switching frequency (typical)
n
Architecture and control methods provide high load
current and good efficiency
n
TSSOP-16 package
n
Over-temperature protection
Applications
n
1-cell Lilon battery-operated equipment including PDAs,
hand-held PCs, cellular phones
n
Flat panel displays
n
Hand-held instruments
n
NiCd, NiMH, or alkaline battery powered systems
n
3.3V to 2.5V and 5.0V to 3.3V conversion
Typical Operating Circuit
10103701
September 1999
LM3352
Regulated
200
mA
Buck-Boost
Switched
Capacitor
DC/DC
Converter
2004 National Semiconductor Corporation
DS101037
www.national.com
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| LM3352MTC-3.0/NOPB | SWITCHED CAPACITOR REGULATOR, 1350 kHz SWITCHING FREQ-MAX, PDSO16 |
| LM3431SD | SWITCHING CONTROLLER, 1100 kHz SWITCHING FREQ-MAX, QCC28 |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LM3354 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Regulated 90mA Buck-Boost Switched Capacitor DC/DC Converter |
| LM3354-1.8EVAL | 功能描述:BOARD EVALUATION LM3354-1.8 RoHS:否 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 |
| LM3354-3.7 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:LM3354-3.7 Regulated 90mA Buck-Boost Switched Capacitor DC/DC Converter |
| LM3354-37 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Regulated 90mA Buck-Boost Switched Capacitor DC/DC |
| LM3354-4.1EVAL | 功能描述:BOARD EVALUATION LM3354-4.1 RoHS:否 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 |
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