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参数资料
| 型号： | LM3354MM-5.0/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHED CAPACITOR REGULATOR, 1400 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封装： | 1.10 MM HEIGHT, MSOP-10 |
| 文件页数： | 1/12页 |
| 文件大小： | 433K |
| 代理商： | LM3354MM-5.0/NOPB |
LM3354
Regulated 90mA Buck-Boost Switched Capacitor DC/DC
Converter
General Description
The LM3354 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 LM3354 is available with standard output voltages of
1.8V, 3.3V, 4.1V (ideal for white LED applications), and 5.0V.
If other output voltage options between 1.8V and 5.0V are
desired, please contact your National Semiconductor repre-
sentative.
The LM3354’s proprietary buck-boost architecture enables
up to 90mA of load current at an average efficiency greater
than 75%. Typical operating current is only 375 A and the
typical shutdown current is only 2.3 A.
The LM3354 is available in a 10-pin MSOP package. This
package has a maximum height of only 1.1 mm.
The high efficiency of the LM3354, 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.
See the LM3352 for up to 200mA of output current or the
LM3355 for up to 50mA of output current.
Features
n
Regulated V
OUT with ±3% (5.0V, 4.1V, and 3.3V
options) or ±4% (1.8V option) accuracy
n
Standard output voltages of 1.8V, 3.3V, 4.1V, and 5.0V
n
Custom output voltages available from 1.8V to 5.0V in
100 mV increments with volume order
n
2.5V to 5.5V input voltage range
n
Up to 90mA (5.0V, 4.1V, and 1.8V options) or 70mA
(3.3V option) output current
n >
75% average efficiency
n
Uses few, low-cost external components
n
Very small solution size
n
375 A typical operating current
n
2.3 A typical shutdown current
n
1 MHz typical switching frequency
n
Architecture and control methods provide high load
current and good efficiency
n
MSOP-10 package
n
Over-temperature protection
Applications
n
White LED display backlights
n
1-cell Lilon battery-operated equipment including PDAs,
hand-held PCs, cellular phones
n
Flat panel displays
n
Hand-held instruments
n
Li-Ion, NiCd, NiMH, or alkaline battery powered systems
Typical Operating Circuit
20018801
September 2002
LM3354
Regulated
90mA
Buck-Boost
Switched
Capacitor
DC/DC
Converter
2004 National Semiconductor Corporation
DS200188
www.national.com
相关PDF资料 |
PDF描述 |
|---|---|
| LM3354MMX-5.0/NOPB | SWITCHED CAPACITOR REGULATOR, 1400 kHz SWITCHING FREQ-MAX, PDSO10 |
| LM3354MMX-1.8/NOPB | SWITCHED CAPACITOR REGULATOR, 1400 kHz SWITCHING FREQ-MAX, PDSO10 |
| LM336BD-2-5 | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.49 V, PDSO8 |
| LM236DR-2-5 | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.49 V, PDSO8 |
| LM336BDR-2-5 | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.49 V, PDSO8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM3354MMX-1.8 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Regulated 90mA Buck-Boost Switched Capacitor DC/DC Converter |
| LM3354MMX-3.3 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Regulated 90mA Buck-Boost Switched Capacitor DC/DC Converter |
| LM3354MMX-3.7 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Regulated 90mA Buck-Boost Switched Capacitor DC/DC |
| LM3354MMX-4.1 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Regulated 90mA Buck-Boost Switched Capacitor DC/DC Converter |
| LM3354MMX-5.0 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Regulated 90mA Buck-Boost Switched Capacitor DC/DC Converter |
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