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PDF LP6223 Data sheet ( Hoja de datos )
| Número de pieza | LP6223 | |
| Descripción | High Efficiency Boost DC/DC Convertor | |
| Fabricantes | Lowpowersemi | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LP6223 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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Preliminary Datasheet
High Efficiency Boost DC/DC Convertor
LP6223
General Description
The LP6223 is a current mode boost DC-DC
converter. Its PWM circuitry with built-in
0.3Ω,24V,1.5A Current power MOSFET makes this
converter highly power efficiently. Selectable high
switching frequency allows faster loop response and
easy filtering with a low noise output. The
non-inverting input its error amplifier is connected
to an internal 0.6V precision reference voltage.
Soft-Start time can be programmed with an external
capacitor, which sets the input current ramp rate.
Current mode control and external compensation
network make it easy and flexible to stabilize the
system.
Ordering Information
LP6223 - □ □ □
F: Pb-Free
Package Type
B6: SOT23-6
Typical Application Circuit
Vin(3-5V)
2.2uH
+
22uF
5 VDD
1
EN
FB 6
22pF
LP6223
Vout_5V
10uF
R1
300K
R2
100K
Features
Up to 94% efficiency
Output to Input Disconnect at Shutdown Mode
Shut-down current:<1uA
Output voltage Up to 28V
Internal Compensation, Soft-start
1.1MHz fixed frequency switching
High switch on current:1.5A/30V
Available in sot23-6 Package
Applications
Battery products
Host Products
Panel
Pin Configurations
654
LP6223B6F
123
Marking Information
Please see website:www.lowpowersemi.com.
LP6223 –00 Version 1.0 Datasheet Jul.-2013
www.lowpowersemi.com - -
Page 1 of 6
1 page  
Preliminary Datasheet
LP6223
Input Capacitor Selection
For better input bypassing, low-ESR ceramic
capacitors are recommended for performance. A
10μF input capacitor is sufficient for most
applications. For a lower output power requirement
application, this value can be decreased.
Output Capacitor Selection
For lower output voltage ripple, low-ESR ceramic
capacitors are recommended. The tantalum
capacitors can be used as well, but the ESR is
bigger than ceramic capacitor. The output voltage
ripple consists of two components: one is the
pulsating output ripple current flows through the
ESR, and the other is the capacitive ripple caused by
charging and discharging.
Layout Guideline
For high frequency switching power supplies, the
PCB layout is important step in system application
design. In order to let IC achieve good regulation,
high efficiency and stability, it is strongly
recommended the power components should be
placed as close as possible. The set races should be
wide and short. The feedback pin and then works of
feedback and compensation should keep away from
the power loops, and be shielded with a ground
trace or plane to prevent noise coupling.
LP6223 –00 Version 1.0 Datasheet Jul.-2013
www.lowpowersemi.com - -
Page 5 of 6
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet LP6223.PDF ] | |
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