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PDF PT1301 Data sheet ( Hoja de datos )
| Número de pieza | PT1301 | |
| Descripción | Low Voltage Step-up DC/DC Converter | |
| Fabricantes | PowTech | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de PT1301 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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PT1301
High Efficiency
Low Voltage Step-up DC/DC Converter
GENERATION DESCRIPTION
The PT1301 is a compact, high efficiency, and low
voltage step-up DC/DC converter with an Adaptive
Current Mode PWM control loop. It comprises of an
error amplifier, a ramp generator, a PWM comparator, a
switch pass element and the driver. It provides stable
and high efficient operation over a wide range of load
currents without external compensation. The below 1V
start-up input voltage makes PT1301 suitable for single
battery cell applications. The built-in power transistor is
able to provide up to 300mA output current while
working under Li-Battery Supply. Besides, it provides
extra pin to drive external power devices (NMOS or
NPN ) in case higher output current is needed. The
output voltage is set with two external resistors. The
500KHz high switching rate reduces the size of external
components. Besides, the 14μA low quiescent current
together with high efficiency maintains long battery
lifetime.
OREER INFORMATION
FEATURES
z Low Quiescent (Switch-off) Supply Current: 14μA
z Low Start-up Input Voltage: typical 0.8V
z High Supply Capability: Deliver 3.3V 100mA with
1Alkaline Cell; 5V 300mA with 1 Li-Cell
z Zero Shutdown Mode Supply Current
z High efficiency: 90%
z Fixed switching frequency: 500KHz
z Options for internal or external power switches
z Package type: SOT-26, SOT-89-5
APPLICATIONS
z MP3, PDA, Electronic
z Dictionary, DSC, LCD, RF-Tag,
z Portable Devices, Wireless Devices, etc.
TYPICAL APPLICATION CIRCUITS
(1) Typical Application
1.5Vto 3.3V, 100mA Output Current, typically for MP3 Application.
(2) Extending Output Current
China Resources Powtech (Shanghai) Limited
PT1301_DS Rev EN_3.0
Page 1
1 page  
PT1301
High Efficiency
Low Voltage Step-up DC/DC Converter
SIMPLIFIED BLOCK DIAGRAM
TYPICAL OPERATING CHARACTERISTICS
(1) Efficiency
(1.1) Vout=3.3V
(1.2) Vout=5.0V
Efficiency @ Vout=3.3V
Efficiency @ Vout=5.0V
100.00%
90.00%
80.00%
70.00%
60.00%
50.00%
100.00%
90.00%
1.0V 80.00%
1.5V
3.0V 70.00%
60.00%
50.00%
1.5V
3.0V
4.5V
Iout (mA)
Iout (mA)
(2) Line Regulation
(2.1) Vout=3.3V
Line Regulation @ Vout=3.3V
3.4
3.35
3.3
3.25
3.2
01234
Vin(V)
Io=1mA
Io=5mA
Io=10mA
Io=25mA
Io=50mA
Io=100mA
Io=150mA
Io=300mA
(2.2) Vout=5.0V
Line Regulation @ Vout=5.0V
5
4.99
4.98
4.97
4.96
4.95
4.94
4.93
4.92
4.91
4.9
012345
Vin (V)
Io=1mA
Io=5mA
Io=10mA
Io=25mA
Io=50mA
Io=100mA
Io=150mA
Io=300mA
Tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com
China Resources Powtech (Shanghai) Limited
PT1301_DS Rev EN_3.0
Page 5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet PT1301.PDF ] | |
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