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PDF LM2686 Data sheet ( Hoja de datos )
| Número de pieza | LM2686 | |
| Descripción | Regulated Switched Capacitor Voltage Converter | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LM2686 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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November 1999
LM2686
Regulated Switched Capacitor Voltage Converter
General Description
The LM2686 CMOS charge-pump voltage converter oper-
ates as an input voltage doubler and a +5V regulator for an
input voltage in the range of +2.85V to +6.5V. Three low cost
capacitors are used in this circuit to provide up to 50mA of
output current at +5.0V (± 5%). The LM2686 operates at a
130 kHz switching frequency to reduce output resistance
and voltage ripple. With an operating current of only 450µA
(operating efficiency greater than 80% with most loads) and
6.0µA typical shutdown current, the LM2686 is ideal for use
in battery powered systems. The device is in a small 14-pin
TSSOP package.
Features
n +5V regulated output
n Doubles input supply voltage
n TSSOP 14 package
n 80% typical conversion efficiency at 25mA
n Input voltage range of 2.85V to 6.5V
n Independent shutdown control pins
Applications
n Cellular phones
n Pagers
n PDAs
n Handheld Instrumentation
n 3.3V to 5V Voltage Conversion Applications
Typical Application and Connection Diagram
Ordering Information
DS101141-1
Order Number
LM2686MTC
LM2686MTCX
Package Type
TSSOP-14
TSSOP-14
NSC Package
Drawing
MTC14
MTC14
DS101141-2
14-Pin TSSOP
Supplied As
94 Units, Rail
2.5k Units, Tape and Reel
© 1999 National Semiconductor Corporation DS101141
www.national.com
1 page  
Typical Performance Characteristics Unless otherwise specified, TA = 25˚C, VIN =
3.6V. (Continued)
Output Voltage (V05) vs. Load
Current
(VIN = 3.6V)
Output Resistance (VDBL) vs. Input
Voltage
V05 Voltage vs. Input Voltage
DS101141-9
DS101141-11
DS101141-19
5 www.national.com
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet LM2686.PDF ] | |
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