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PDF AIC2862 Data sheet ( Hoja de datos )
| Número de pieza | AIC2862 | |
| Descripción | 2A 23V Synchronous PWM/PSM Step-Down Converter | |
| Fabricantes | Analog Intergrations Corporation | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AIC2862 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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AIC2862
2A 23V Synchronous PWM/PSM Step-Down
Converter with High Light-load Efficiency
FEATURES
2A Continuous Output Current
Wide 4.75V to 23V Operating Input Range
Ouput Adjustable from 0.925V to 12V
Up to 89% Efficiency for Heavy Load
(Vin=12V, Vout=3.3V, Iout=2.0A)
Up to 92% Efficiency for Moderate Load
(Vin=12V, Vout=3.3V, Iout=1.0A)
Up to 81% Efficiency for Light Load
(Vin=12V, Vout=3.3V, Iout=20mA)
Low Rds(on) Internal Switches: 140mΩ and
120mΩ
<3µA Supply Current in Shutdown Mode
340KHz/550KHz Frequency
Programmable Soft Start
Thermal Shutdown
Cycle by Cycle Over Current Protection
Under Voltage Lockout
Short Circuit Protection
Over Voltage Protection
APPLICATIONS
Networking Systems such as Modems &
Routers
Distributed Power Systems
Pre-Regulator for Linear Regulators
Set-top Box
DESCRIPTION
The AIC2862 is a 2A synchronous-rectified Buck
converter with integrated low Rds(on) power
MOSFETs. The AIC2862, designed with a cur-
rent-mode control scheme, can convert wide in-
put voltage to the adjustable output voltage to
provide excellent output voltage regulation. It is
stable with low ESR output ceramic capacitors.
For high efficiency over all load current range,
the
AIC2862 is equipped with an automatic
PSM/PWM modeoperation. At light load, the IC
operates in the PSM (Pulse Skipping Mode) to
reduce switching losses. At heavy load, the IC
works in PWM mode to provide high efficiency
and excellent output voltage regulation.
The AIC2862 is also equipped with softstart and
whole protections (under-voltage, over-voltage,
over-temperature, short circuit and current-limit)
into a single package.
This device, available in SOP-8 package, pro-
vides a very compact system solution with mini-
mal external components and PCB area.
TYPICAL APPLICATIONS CIRCUIT
Typical Application Circuit
Analog Integrations Corporation
Si-Soft Research Center
DS-2862G-02 20120807
3A1, No.1, Li-Hsin Rd. I , Science Park , Hsinchu 300, Taiwan , R.O.C.
TEL: 886-3-5772500
FAX: 886-3-5772510
www.analog.com.tw
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1 page  
AIC2862
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
Fig. 7 Load Transient at VOUT=3.3V, IOUT=0.5A to 2A
Fig. 8 Stability Waveform at VOUT=3.3V, IOUT=1A
Fig. 9 Stability Waveform at VOUT=3.3V, IOUT=2A
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5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet AIC2862.PDF ] | |
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| Número de pieza | Descripción | Fabricantes |
| AIC2862 | 2A 23V Synchronous PWM/PSM Step-Down Converter | Analog Intergrations Corporation |
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