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PDF A7523 Data sheet ( Hoja de datos )
| Número de pieza | A7523 | |
| Descripción | SUPER-SMALL PACKAGE PWM CONTROL STEP-UP SWITCHING REGULATOR | |
| Fabricantes | AiT Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de A7523 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
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AiT Semiconductor Inc.
www.ait-ic.com
A7523
DC-DC CONVERTERBOOST(STEP-UP)
SUPER-SMALL PACKAGE PWM CONTROL
STEP-UP SWITCHING REGULATOR
DESCRIPTION
The A7523 is a compact, high efficiency, and low
voltage step-up DC/DC converter with an
Adaptive Current Mode PWM control loop,
includes an error amplifier, ramp generator,
comparator, switch pass element and driver in
which providing a stable and high efficient
operation over a wide range of load currents. It
operates in stable waveforms without external
compensation.
The low start-up input voltage below 1V makes
A7523 suitable for 1 to 4 battery cells applications
of providing up to 600mA output current. Besides,
the 14μA low quiescent current together with high
efficiency maintains long battery lifetime. The
output voltage is set with two external resistors.
Both internal 2A switch and driver for driving
external power devices (NMOS or NPN) are
provided.
The A7523 is available in SOT-26 package.
ORDERING INFORMATION
Package Type
Part Number
SOT-26
A7523E6R-XX
E6
A7523E6VR-XX
XX: Output Voltage
Note
ADJ=Adjustable
R: Tape & Reel
V: Halogen free Package
AiT provides all RoHS products
Suffix “ V “ means Halogen free Package
FEATURES
0.8V（Iout=1mA） Low Start-up Input Voltage
500kHz Fixed Switching Frequency
90% Efficiency
High Supply Capability to Deliver 3.3V 300mA
with1 Alkaline Cell or Deliver 5V 800mA with 1
Li-ion Cell
14μA Quiescent (Switch-off) Supply Current
0.01μA Shutdown Mode Supply Current
Providing Flexibility for Using Internal and
External Power Switches
Output voltage: Settable to between 2.0V to
6.0V ,accuracy of 2%
Available in SOT-26 package.
APPLICATION
MP3
PDA
DSC
LCD Panel
RF-Tags
Portable Instrument
Wireless Equipment
REV1.0
- DEC 2011 RELEASED -
-1-
1 page  
AiT Semiconductor Inc.
www.ait-ic.com
A7523
DC-DC CONVERTERBOOST(STEP-UP)
SUPER-SMALL PACKAGE PWM CONTROL
STEP-UP SWITCHING REGULATOR
TYPICAL PERFORMANCE CHARACTERISTICS
Figure 1.Efficiency vs. Output Current
Figure 2. Input current vs. Output current
Figure3.Input Current vs. Input Voltage
Figure4.Supply Current I(VIN) vs. Input Voltage
Figure5．Switching Frequency vs. VDD pin Voltage
Figure 6. Start up voltage vs. Output Current
REV1.0
- DEC 2011 RELEASED -
-5-
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet A7523.PDF ] | |
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