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LM828M5X Datasheet

  • LM828M5X

  • Switched Capacitor Voltage Converter

  • 8頁

  • NSC

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LM828 Switched Capacitor Voltage Converter
March 1999
LM828
Switched Capacitor Voltage Converter
General Description
The LM828 CMOS charge-pump voltage converter inverts a
positive voltage in the range of +1.8V to +5.5V to the corre-
sponding negative voltage of 鈭?.8V to 鈭?.5V. The LM828
uses two low cost capacitors to provide up to 25 mA of out-
put current.
The LM828 operates at 12 kHz switching frequency to re-
duce output resistance and voltage ripple. With an operating
current of only 40 碌A(chǔ) (operating efficiency greater than 96%
with most loads), the LM828 provides ideal performance for
battery powered systems. The device is in a tiny SOT-23-5
package.
Features
n
n
n
n
Inverts Input Supply Voltage
SOT-23-5 Package
20鈩?Typical Output Impedance
97% Typical Conversion Efficiency at 5 mA
Applications
n
n
n
n
n
n
Cellular Phones
Pagers
PDAs
Operational Amplifier Power Supplies
Interface Power Supplies
Handheld Instruments
Basic Application Circuits
Voltage Inverter
DS100137-1
+5V to 鈭?0V Converter
DS100137-2
漏 1999 National Semiconductor Corporation
DS100137
www.national.com

LM828M5X 產(chǎn)品屬性

  • 3,000

  • 集成電路 (IC)

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

  • -

  • 切換式電容器（充電泵），反相

  • 可調(diào)式

  • 1

  • -1.8 V ~ -5.5 V

  • 1.8 V ~ 5.5 V

  • -

  • 12kHz

  • 25mA

  • 無

  • -40°C ~ 85°C

  • 表面貼裝

  • SC-74A，SOT-753

  • 帶卷 (TR)

  • SOT-23-5

  • LM828M5XTR

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