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LM3352MTCX-3.0 Datasheet

  • LM3352MTCX-3.0

  • Regulated 200 mA Buck-Boost Switched Capacitor DC/DC Convert...

  • 11頁

  • NSC

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LM3352 Regulated 200 mA Buck-Boost Switched Capacitor DC/DC Converter
September 1999
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 Na-
tional Semiconductor representative.
The LM3352鈥檚 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 碌A and the
typical shutdown current is only 2.5 碌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.
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 碌A typical operating current
n
2.5 碌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
Features
n
Regulated V
OUT
with
鹵
3% accuracy
n
Standard output voltage options: 2.5V, 3.0V and 3.3V
Typical Operating Circuit
DS101037-1
漏 1999 National Semiconductor Corporation
DS101037
www.national.com

LM3352MTCX-3.0 產品屬性

  • 2,500

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器

  • -

  • 降壓（降壓），升壓（升壓），切換電容（充電泵）

  • 固定

  • 1

  • 3V

  • 2.5 V ~ 5.5 V

  • -

  • 1MHz

  • 200mA

  • 無

  • -40°C ~ 85°C

  • 表面貼裝

  • 16-TSSOP（0.173"，4.40mm 寬）

  • 帶卷 (TR)

  • 16-TSSOP

  • LM3352-3.0EVAL-ND - EVALUATION BOARD FOR LM3352-3.0

  • *LM3352MTCX-3.0

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