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PDF AT1305 Data sheet ( Hoja de datos )
| Número de pieza | AT1305 | |
| Descripción | PFM Step-Up DC/DC Converter | |
| Fabricantes | Aimtron Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AT1305 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
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AT1305
Preliminary Product Information
PFM Step-Up DC/DC Converter with LDO
Features
General Description
• 0.8V Low Start-Up Input Voltage
The AT1305 is a PFM step-up DC/DC converter
• Up to 90%Efficiency
with LDO for applications using 1 Cell or 2 Cell
• Adjustable 100mA Output with 1 Alkaline Cell Alkaline battery and USB applications. Besides,
or 200mA Output with 2 Alkaline Cell the 32µA low quiescent current together with high
Battery input.
efficiency maintains long battery life time. It
• 1.8V/3.0V/3.3V/300mA Output with USB
provides a constant output voltage for inputs that
Power input.
vary above and below the output voltage.
• Small Number of External Components needed
• Load Disconnects from Input in Shutdown
• Power good output
• 32µA Quiescent(Switch OFF) Supply current
• 1µA Shutdown Mode Supply current
• 8-Pin TSSOP package
Applications
• MP3
• Power source for battery-powered equipment
• Power source for cameras, camcorders, VCRs,
PDAs, electronic data banks, and hand-held
Communication equipment
Block Diagram
Aimtron reserves the right without notice to change this circuitry and specifications.
7F, No.9,PARK AVENUE. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 Fax: 886-3-563-0879
WWW: http://www.aimtron.com.tw
2/8/2006 REV:1.1
Email: [email protected]
1
1 page  
AT1305
Preliminary Product Information
PFM Step-Up DC/DC Converter with LDO
Typical Operating Charateristics
Boost Converter Line Transient Response
Boost Converter Line Transient Response
Boost Converter Load Transient Response Boost Converter Load Transient Response
7F, No.9,PARK AVENUE. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 Fax: 886-3-563-0879
WWW: http://www.aimtron.com.tw
2/8/2006 REV:1.1
Email: [email protected]
5
5 Page 
AT1305
Preliminary Product Information
PFM Step-Up DC/DC Converter with LDO
Power good
The PG pin stays high impedance when the dc/dc converter or the LDO output
voltage high than 2.7 V, and falling down when the voltage low than 2.6V. It could be
used to enable the processor after the push-button start-up.
On/Off Control
A single pushbutton switch can be used to turn the AT1305 on and off. EN is pulled
low (internal) and /ENPB is pulled high when the AT1305 is off. When the switch is
pressed, /ENPB is pulled low and the IC turns on. The switch should be on long
enough for the processor to exit reset. The controller issues a logic high to EN, which
guarantees the IC will stay on regardless of the switch state.
EN
/ENPB
AT1305
0 0 ON
0 1 OFF
1 0 ON
1 1 ON
7F, No.9,PARK AVENUE. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 Fax: 886-3-563-0879
WWW: http://www.aimtron.com.tw
2/8/2006 REV:1.1
Email: [email protected]
11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet AT1305.PDF ] | |
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