AIC1580CN
器件描述：Simple PWM Power Regulator with Shutdown
器件厂商：AIC [Analog Intergrations Corporation]
文件大小：296.12KB，共8页
Sponsor by e络盟器件资料摘要：
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
onesansinv FEATURES
tensans Operation Voltage up to 15V.
tensans Simple Voltage-Mode PWM Control.
tensans Fast Transient Response.
tensans 2V and 1.3V ± 2% Feedback Voltage Reference
Option.
tensans Adjustable Current Limit without External Sense
Resistors.
tensans 200KHz Free-Running Oscillator.
tensans Short-Circuit Protection with Low Short Circuit
Output Current.
tensans Low Shutdown Current
tensans Built-in Soft Start.
onesansinv APPLICATIONS
tensans Power Supply for Motherboard V
GTL
(1.5V Output)
tensans Power Supply for Motherboard V
I/O
.
tensans High-Power 5V to 3.xV DC/DC Regulators.
tensans Low-Voltage Distributed Power Supplies.
onesansinv 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 components while
maintaining high conversion efficiency. The
11MHz bandwidth and 6V/µS slew rate of the
error amplifier ensures high converter
bandwidth and fast transient response.
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.
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
onesansinv FEATURES
tensans Operation Voltage up to 15V.
tensans Simple Voltage-Mode PWM Control.
tensans Fast Transient Response.
tensans 2V and 1.3V ± 2% Feedback Voltage Reference
Option.
tensans Adjustable Current Limit without External Sense
Resistors.
tensans 200KHz Free-Running Oscillator.
tensans Short-Circuit Protection with Low Short Circuit
Output Current.
tensans Low Shutdown Current
tensans Built-in Soft Start.
onesansinv APPLICATIONS
tensans Power Supply for Motherboard V
GTL
(1.5V Output)
tensans Power Supply for Motherboard V
I/O
.
tensans High-Power 5V to 3.xV DC/DC Regulators.
tensans Low-Voltage Distributed Power Supplies.
onesansinv 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 components while
maintaining high conversion efficiency. The
11MHz bandwidth and 6V/µS slew rate of the
error amplifier ensures high converter
bandwidth and fast transient response.
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.