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PDF AIC1567CS Data sheet ( Hoja de datos )
| Número de pieza | AIC1567CS | |
| Descripción | 5-bit DAC/ Synchronous PWM Power Regulator with Linear Controller | |
| Fabricantes | Analog Intergrations Corporation | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AIC1567CS (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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AIC1567
5-bit DAC, Synchronous PWM Power Regulator
with Linear Controller
FEATURES
Switching Regulator and Low Dropout Linear
Regulator on single chip.
Simple Voltage-Mode PWM Control.
Dual N-Channel MOSFET Synchronous Drive.
Fast Transient Response.
±1.0% 5-Bit Digital-to-Analog Output Voltage.
Adjustable Current Limit Without External Sense
Resistor.
Full 0% to 100% Duty Ratio.
200KHz Free-Running Oscillator Programmable
up to 350KHz.
Power-Good Output Voltage Monitor.
Short Circuit Protection with Low Short Circuit
Output Current.
APPLICATIONS
Power Supply for Pentium II, Power PC and
Alpha Microprocessors.
High-Power 5V to 3.xV DC/DC Regulators.
Low-Voltage Distributed Power Supplies.
DESCRIPTION
The AIC1567 is a high power, high efficiency
switching regulator controller optimized for high
performance microprocessor applications. It is
designed to drive dual N-channel MOSFET in a
standard synchronous buck topology.
Featuring a low dropout linear regulator and a
digitally programmable switching regulator, the
AIC1567 includes monitoring and protection
capabilities in addition to all the essential
synchronous PWM control functions.
The internal 5-bit Digital-to-Analog Converter
(DAC) adjusts the output voltage from 2.0V to
3.5V in 0.1V increments and 1.3V to 2.0V in
0.05V increments. The precision reference and
voltage-mode control can provide output
regulation within ±1.0% over temperature and
line voltage shifts.
The internal oscillator of the AIC1567 free-runs
at 200KHz and can be adjusted up to 350KHz.
The resulting PWM duty ratio ranges from 0% to
100%. The error amplifier features a 11MHz
bandwidth and 6V/µS slew rate, which enables
high converter bandwidth for fast transient
response.
Analog Integrations Corporation 4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
DS-1567-00
TEL: 886-3-5772500 FAX: 886-3-5772510
www.analog.com.tw
1
1 page  
AIC1567
BLOCK DIAGRAM
VSEN
SS
VID0
VID1
VID2
VID3
VID4
FB
COMP
CLP
CLN
10µA
115%
110%
90%
50%
+
-
OVP
+
-
POW ER
+ GOOD
-
+
-
POW ER-ON
RESET
OVER
CURRENT
+
-
4V
SOFT
START
5BITS
DAC
VDAC
REFERENCE
+
-
ERROR
AMP
+
+
-
PW M
COMPARATOR
CONTROL
LOGIC
OSCILLATOR
-+
20mV
+
- CURRENT SENSE
1.2V LINEAR AMP.
+
-
VCC
OVP
PGOOD
200µA
OCSET
VCC
PHASE
BOOT
UGATE
GND
LGATE
PGND
RT
LIDRI
VLFB
5
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet AIC1567CS.PDF ] | |
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