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PDF LN2406 Data sheet ( Hoja de datos )
| Número de pieza | LN2406 | |
| 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 LN2406 (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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PWM/PFM automatic switching Controlled Synchronous DC-DC Converters
LN2406/7 Series
PWM/PFM AUTOMATIC SWITCHING CONTROLLED SYNCHRONOUS
DC-DC CONVERTERS
LN2406/7 SERIES
■ GENERAL DESCRIPTION
LN2406/7 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
■ APPLICATIONS
High Efficiency: 92％
Input Voltage Range: 2.0 ~ 6.0V
Output Current: 800mA
Shutdown Current: <1uA
Oscillation Frequency: 1.4MHz
■ PACKAGE
Cellular and Smart Phones
PDAs
MP3/MP4 Player
Digital Still and Video Cameras
Microprocessors and DSP Core Supplies
Portable Instruments
SOT-23-5
■ BLOCK DIAGRAM
FB
0.6V
EA
REF
CE
Current Sense
& Limit
PWM/PFM
∑
SLOPE
Compensation
OSC
Logic
&
Buffer
Izero
Temperature
Protect
LX
Fig1
Note: Though LN2406, LN2407 are different in pin package, the two parameters are entirely same.
Shanghai Natlinear Electronics Co. Ltd
-1-
http://www.natlinear.com
1 page  
■ PIN CONFIGURATION
PWM/PFM automatic switching Controlled Synchronous DC-DC Converters
LN2406/7 Series
54
12 3
SOT-23-5L
(TOP VIEW)
■ PIN ASSIGNMENT
LN2406
PIN MUMBER
1
2
3
4
5
LN2407
PIN MUMBER
1
2
3
4
5
PIN NAME
CE
GND
LX
VIN
FB/VOUT
PIN NAME
VIN
GND
CE
FB/VOUT
LX
FUNCTION
Chip Enable Pin
Common Ground
Switching Output
Power Input
Feedback/Output Voltage Pin
FUNCTION
Power Input
Common Ground
Chip Enable Pin
Feedback/Output Voltage Pin
Switching Output
■ ORDERING INFORMATION
LN2406①②③④⑤
Designator
①
②
③
④
⑤
1
2
Symbol
13
83
F
M
P
S
R
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-25
Package Types: MSOP-10
Embossed Tape :Standard Feed
Embossed Tape :Reverse Feed
For example: LN240600FMR said package pins is defined as LN2406, external feedback, the oscillator frequency of
1.4MHz, Package SOT-25, Reverse Feed.
Shanghai Natlinear Electronics Co. Ltd
-5-
http://www.natlinear.com
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet LN2406.PDF ] | |
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