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參數(shù)資料
| 型號(hào)： | AIC1580LCS |
| 廠商： | Analog Integrations Corporation |
| 英文描述： | Simple PWM Power Regulator with Shutdown |
| 中文描述： | 簡(jiǎn)單PWM功率調(diào)節(jié)器，帶有關(guān)斷 |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大?。?/td> | 296K |
| 代理商： | AIC1580LCS |
AIC1580/L
Simple PWM Power Regulator with Shutdown
Analog Integrations Corporation
4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
www.analog.com.tw
DS-1580-00 Sep 5, 00
TEL: 886-3-5772500
FAX: 886-3-5772510
1
FEATURES
Operation Voltage up to 15V.
Simple Voltage-Mode PWM Control.
Fast Transient Response.
2V and 1.3V
±
2% Feedback Voltage Reference
Option.
Adjustable Current Limit without External Sense
Resistors.
200KHz Free-Running Oscillator.
Short-Circuit Protection with Low Short Circuit
Output Current.
Low Shutdown Current
Built-in Soft Start.
APPLICATIONS
Power Supply for Motherboard V
GTL
(1.5V Output)
Power Supply for Motherboard V
I/O
.
High-Power 5V to 3.xV DC/DC Regulators.
Low-Voltage Distributed Power Supplies.
DESCRIPTION
The AIC1580 is a high-power, high-efficiency
voltage-mode switching regulator controller for
motherboard V
I/O
power supply applications.
Designed to drive a N-channel MOSFET in a
standard buck topology, the AIC1580 features a
high voltage CMOS output driver, short-circuit
protection, and 8-pin package.
An external 4-bit Digital-to-Analog Converter
(DAC) can be used along with the AIC1580 to
adjust the output voltage from 2.0V to 3.5V in
0.1V increments. Table 1 on the following page
specifies the corresponding output voltage for
16 combinations of DAC inputs as in the typical
application circuit.
The 200KHz switching frequency allows for
using
small
external
maintaining high conversion efficiency. The
11MHz bandwidth and 6V/
μ
S slew rate of the
error
amplifier
ensures
bandwidth and fast transient response.
components
while
high
converter
The AIC1580 provides adjustable overcurrent
and short-circuit protections by sensing the
output current across the on resistance of the
external N-channel MOSFET rather than an
external low value sense resistor.
The AIC1580L provides lower reference voltage
(1.30V) than the default (2.00V, AIC1580) for
lower V
OUT
requirement.
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