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PDF PT1311 Data sheet ( Hoja de datos )
| Número de pieza | PT1311 | |
| Descripción | High Efficiency Synchronous Boost DC/DC Converter | |
| Fabricantes | PowTech | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de PT1311 (archivo pdf) en la parte inferior de esta página. Total 5 Páginas | ||
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PT1311
High Efficiency Synchronous
Boost DC/DC Converter
GENERAL DESCRIPTION
The PT1311 is a high efficiency synchronous fixed
frequency step-up DC/DC converter. The device is
available in an adjustable version and fixed output
voltages of 3.3V or 5.0V. Supply current during
operation is only 25μA and drops to ≤1μA in shutdown.
The 0.85V to 4.2V input voltage range makes the
PT1311 ideally suited for single Li-Ion battery or
single AA battery applications. Automatic Burst Mode
operation increases efficiency at light loads, further
extending battery life. Switching frequency is internally
set at 1.2MHz, allowing the use of small surface mount
inductors and capacitors. The internal synchronous
switch increases efficiency and eliminates the need for
an external Schottky diode. Anti-ringing control
circuitry reduces EMI concerns by damping the
inductor in DCM mode. The internal short protect
circuitry can protect battery when output short to
ground. The PT1311 is available in a SOT23-6
package.
APPLICATIONS
z Li-ion Battery Chargers
z USB Audio Devices
z Wireless Mice
FEATURES
z High Efficiency: Up to 93%
z Very Low Quiescent Current: Only 25μA During
Operation
z 600mA Output Current
z 0.85V to 4.2V Input Voltage Range
z 1.2MHz Constant Frequency Operation
z No Schottky Diode Required
z Anti-ringing Control Minimizes EMI
z Output Short Protect
z Shutdown Mode Draws≤1μA Supply Current
z Current Mode Operation for Excellent Line and
Load Transient Response
z Over temperature Protected
z Feedback Voltage Auto Detect
z SOT23-6 Package
z Digital Still Cameras
z MP3/MP4 Players
z Portable Instruments
TYPICAL APPLICATION DIAGRAM
Figure 1. Single Cell to 3.3V Synchronous Boost Converter
China Resources Powtech (Shanghai) Limited
PT1311_DSB Rev EN_0.2
WWW.CRPOWTECH.COM
Page 1
1 page  
PACKAGE INFORMATION
PT1311
High Efficiency Synchronous
Boost DC/DC Converter
SOT-23-6
SYMBOL
A
A1
B
b
C
D
e
H
L
DIMENSION ( in mm)
MIN
0.787
MAX
1.450
0.152
1.397
1.803
0.250
0.559
2.591
2.997
2.692
3.099
0.838
0.080
0.300
1.041
0.254
0.610
DIMENSION ( in Inch)
MIN
0.031
MAX
0.057
0.006
0.055
0.071
0.010
0.022
0.102
0.118
0.106
0.122
0.033
0.003
0.012
0.041
0.010
0.024
China Resources Powtech (Shanghai) Limited
PT1311_DSB Rev EN_0.2
WWW.CRPOWTECH.COM
Page 5
5 Page | ||
| Páginas | Total 5 Páginas | |
| PDF Descargar | [ Datasheet PT1311.PDF ] | |
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