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參數(shù)資料
| 型號(hào)： | AIC1569ACS |
| 廠商： | Analog Integrations Corporation |
| 英文描述： | RESISTOR, CHIP, 6.19K-1%-0.0625W |
| 中文描述： | 5位DAC，同步PWM功率調(diào)節(jié)器 |
| 文件頁(yè)數(shù)： | 1/7頁(yè) |
| 文件大小： | 240K |
| 代理商： | AIC1569ACS |
AIC1569A
5-bit DAC, Synchronous PWM Power Regulator
Analog Integrations Corporation
4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
www.analog.com.tw
DS-1569A-00
TEL: 886-3-5772500
FAX: 886-3-5772510
1
FEATURES
Compatible with HIP6004.
Simple Voltage-Mode PWM Control.
Dual N-Channel MOSFET Synchronous Drive.
Fast Transient Response.
±
1% 5-Bit Digital-to-Analog Output Voltage.
Adjustable Current Limit Without External
Sense Resistor.
Full 0% to 100% Duty Ratio.
200KHz
Programmable up to 350KHz.
Free-Running
Oscillator,
Power-Good Output Voltage Monitor.
APPLICATIONS
Power Supply for Pentium II, Power and
Alpha Microprocessors.
High-Power 5V to 3.xV DC/DC Regulators.
Low-Voltage Distributed Power Supplies.
DESCRIPTION
The AIC1569A is a high power, high efficiency
switching regulator controller optimized for high
performance microprocessor applications. It is
designed to drive dual N-channel MOSFETs in a
standard synchronous buck topology. Featuring
a digitally programmable switching regulator, the
AIC1569A 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
regulation within
±
1% over temperature and line
voltage shifts.
can
provide
output
The internal oscillator of the AIC1569A 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 an 11MHz
bandwidth and 6V/
μ
S slew rate, which enables
high converter bandwidth for fast transient
response.
The AIC1569A provides adjustable over current
and short circuit protections. It senses the output
current across the on resistance of the upper 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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