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參數(shù)資料
| 型號： | AIC1568CS |
| 廠商： | Analog Integrations Corporation |
| 英文描述： | 4-bit DAC, Simple PWM Power Regulator |
| 中文描述： | 4位DAC，PWM功率調(diào)節(jié)器簡單 |
| 文件頁數(shù)： | 1/7頁 |
| 文件大小： | 252K |
| 代理商： | AIC1568CS |
AIC1568
4-bit DAC, Simple PWM Power Regulator
Analog Integrations Corporation
4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
www.analog.com.tw
DS-1568-00
TEL: 886-3-5772500
FAX: 886-3-5772510
1
FEATURE
Compatible with HIP6008.
Simple Voltage-Mode PWM Control.
Fast Transient Response.
±
1.5% 4-Bit Digital-to-Analog Output Voltage.
Adjustable Current Limit without External Sense
Resistors.
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
,
Pentium Pro
,
Power
PC
and Alpha
Microprocessors.
High-Power 5V to 3.xV DC/DC Regulators.
Low-Voltage Distributed Power Supplies.
DESCRIPTION
The AIC1568 is a high power, high efficiency
switching regulator controller optimized for high
performance microprocessor applications. It is
designed to drive an N-channel MOSFET in a
standard buck topology. Featuring a digitally
programmable switching regulator, the AIC1568
includes monitoring and protection capabilities in
addition to all the essential PWM control
functions.
The internal 4-bit Digital-to-Analog Converter
(DAC) adjusts the output voltage from 2.0V to
3.5V in 0.1V increments. The precision reference
and voltage-mode control can provide output
regulation within
±
1.5% over temperature and line
voltage shifts.
The internal oscillator of the AIC1568 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/
μ
S slew rate, which enables high
converter bandwidth for fast transient response.
The AIC1568 provides adjustable over current
and short circuit protections. It senses the output
current across the on resistance of the N-channel
MOSFET without an external low value sense
resistor. It also monitors the output voltage with a
window comparator and issues a power good
signal when the output is within 10% of the rated
output voltage.
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