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參數資料
| 型號： | LM3350 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Switched Capacitor Voltage Converter |
| 中文描述： | 開關電容電壓轉換器 |
| 文件頁數： | 1/8頁 |
| 文件大小： | 243K |
| 代理商： | LM3350 |
LM3350
Switched Capacitor Voltage Converter
General Description
The LM3350 is a CMOS charge-pump voltage converter
which efficiently provides a 3.3V to 5V step-up, or 5V to 3.3V
step-down. The LM3350 uses four small, low cost capacitors
to provide the voltage conversion. It eliminates the cost, size
and radiated EMI related to inductor based circuits, or the
power loss of a linear regulator. Operating power conversion
efficiency greater than 90% provides ideal performance for
battery powered portable systems.
The architecture provides a fixed voltage conversion ratio of
3/2 or 2/3. Thus it can be used for other DC-DC conversions
as well.
Key Specifications
n
800 kHz switch frequency allows use of very small,
inexpensive capacitors.
n
4.2
typical step-up output impedance
n
1.8
typical step-down output impedance
n
90% typical power conversion efficiency at 50 mA
n
250 nA typical shutdown current
Features
n
Conversion of 3.3V to 5V, or 5V to 3.3V
n
Small Mini SO-8 package
n
No inductor required
Applications
n
Any mixed 5V and 3.3V system
n
Laptop computers and PDAs
n
Handheld instrumentation
n
PCMCIA cards
Ordering Information
Order Number
Package Type
NSC Package
Drawing
MUA08A
MUA08A
Package
Marking
S00A
S00A
Supplied As
LM3350MMX
LM3350MM
Mini SO-8
Mini SO-8
3500k Units on Tape and Reel
1000 Units on Tape and Reel
Basic Operating Circuits
Connection Diagram
Step-Up Converter
DS100002-1
Step-Down Converter
DS100002-2
Mini SO8 Package
DS100002-3
Top View
December 1999
L
1999 National Semiconductor Corporation
DS100002
www.national.com
相關PDF資料 |
PDF描述 |
|---|---|
| LM3352MTC-3.0 | Regulated 200 mA Buck-Boost Switched Capacitor DC/DC Converter |
| LM3352MTC-3.3 | ECONOLINE: RSS & RSD - 1kVDC and 3KVDC Isolation- Internal SMD Construction- UL94V-0 Package Material- Toroidal Magnetics- Efficiency to 85%- SMD5, SMD8, SMD10 and SMD12 case styles |
| LM3352 | Regulated 200 mA Buck-Boost Switched Capacitor DC/DC Converter |
| LM3352MTC-2.5 | Regulated 200 mA Buck-Boost Switched Capacitor DC/DC Converter |
| LM3352MTCX-2.5 | Regulated 200 mA Buck-Boost Switched Capacitor DC/DC Converter |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LM3350AM WAF | 制造商:Texas Instruments 功能描述: |
| LM3350MM | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Switched Capacitor Voltage Converter |
| LM3350MM/NOPB | 功能描述:IC REG MULTI CONFIG 50MA 8-MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 開關穩壓器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數:1 輸出電壓:3.3V 輸入電壓:4.5 V ~ 24 V PWM 型:- 頻率 - 開關:- 電流 - 輸出:125mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 包裝:Digi-Reel® 供應商設備封裝:SOT-6 其它名稱:MAX1836EUT33#TG16DKR |
| LM3350MMX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Switched Capacitor Voltage Converter |
| LM3350MMX/NOPB | 功能描述:IC REG MULTI CONFIG 50MA 8-MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 開關穩壓器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數:1 輸出電壓:3.3V 輸入電壓:4.5 V ~ 24 V PWM 型:- 頻率 - 開關:- 電流 - 輸出:125mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 包裝:Digi-Reel® 供應商設備封裝:SOT-6 其它名稱:MAX1836EUT33#TG16DKR |
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