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PDF LN2407 Data sheet ( Hoja de datos )
| Número de pieza | LN2407 | |
| Descripción | PWM/PFM Automatic Switching Controlled Synchronous DC-DC Converters | |
| Fabricantes | Natlinear | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LN2407 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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LN2407
PWM/PFM Automatic Switching Controlled Synchronous DC-DC Converters
■ General Description
LN2407 series is a group of high efficiency
synchronous-rectification type buck regulator using a
constant frequency, current mode architecture. The device
is available in an adjustable version and fixed output
voltages of 1.8V and 3.3V. Automatic PWM/PFM mode
operation increases efficiency and decreases output
voltage ripple at light loads, further extending battery life.
Switching frequency is internally set at 1.4MHz, allowing
the use of small surface mount inductors and capacitors.
100% duty cycle provides low dropout operation.
■ Features
High Efficiency: 92％
Input Voltage Range: 2.0 ~ 6.0V
Output Current: 800mA
Shutdown Current: <1uA
Oscillation Frequency: 1.4MHz
■ Typical Application Circuit
■ Applications
Cellular and Smart Phones
PDAs
MP3/MP4 Player
Digital Still and Video Cameras
Microprocessors and DSP Core Supplies
Portable Instruments
■ Package
SOT-23-5
54
LX FB/VOUT
VIN GND CE
123
(Top View)
■ Ordering Information
LN2407 ①②③④⑤
Designator
①
1
②2
③
④
⑤
Symbol
13
83
F
M
R
S
Description
4 Output Voltage: 1.2V、1.8V、3.3V、4.2V
2 Adjustable version: ①② fixed as 00
Oscillation Frequency 1.4MHz
Package Types: SOT-23-5
Embossed Tape :Standard Feed
Embossed Tape :Reverse Feed
For example: LN240700FMR said package pins is defined as LN2407, external feedback, the oscillator frequency of 1.4MHz,
Package SOT-23-5, Reverse Feed.
Rev.1.0 —May. 5, 2011
1 http://www.natlinear.com
1 page  
■ Typical Performance Characteristics
LN2407
Output voltage vs output current
Input voltage vs output voltage
Output voltage vs Temperature
1.8V Efficiency vs output current
3.3V Efficiency vs output current
Rev.1.0 —May. 5, 2011
5
http://www.natlinear.com
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet LN2407.PDF ] | |
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