AIC1569ACS Analog Intergrations Corporation, AIC1569ACS Datasheet

no-image

AIC1569ACS

Manufacturer Part Number
AIC1569ACS
Description
Manufacturer
Analog Intergrations Corporation
Datasheet
Analog Integrations Corporation
DS-1569A-00
FEATURES
APPLICATIONS
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.
Power-Good Output Voltage Monitor.
Power Supply for Pentium® II, Power® and
Alpha® Microprocessors.
High-Power 5V to 3.xV DC/DC Regulators.
Low-Voltage Distributed Power Supplies.
Free-Running
5-bit DAC, Synchronous PWM Power Regulator
4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
TEL: 886-3-5772500
Oscillator,
FAX: 886-3-5772510
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
regulation within ±1% over temperature and line
voltage shifts.
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/µS 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.
DESCRIPTION
control
can
AIC1569A
provide
www.analog.com.tw
output
1

Related parts for AIC1569ACS

AIC1569ACS Summary of contents

Page 1

DAC, Synchronous PWM Power Regulator 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. ...

Page 2

... PACKAGE TYPE S: SMALL OUTLINE TEMPERATURE RANGE C: 0°C~70°C TYPICAL APPLICATION CIRCUIT C8 0.1 µ F VID0 VID1 VID2 VID3 VID4 C7 33pF C6 R6 90.9K 1000pF DC/DC Converter for Pentium ORDER NUMBER AIC1569ACS (PLASTIC SO) C9 1000pF R2 2.2K C2 VSEN RT 0.1µF OCSET OVP SS VCC VID0 LGATE VID1 PGND VID2 BOOT ...

Page 3

ABSOLUTE MAXIMUM RATINGS Supply Voltage, V ....…...........................….……....………….......................................... 15V CC Boot Voltage, V ………........................………..…………............................................. 15V BOOT Input, Output, or I/O Voltage .....................…………...…...……....... GND - 0.3V to VCC+0.3V ESD Classification ..............................……………….…................……......................... Class 2 Recommended Operating Conditions Supply Voltage, V ....…............................…………..……...................................... 12V±10% CC ...

Page 4

ELECTRICAL CHARACTERISTICS PARAMETER DAC Output Voltage DAC Output Voltage Accuracy Error Amplifier DC Gain Gain-Bandwidth Product Slew Rate Gate Driver Upper Gate Source Upper Gate Sink Lower Gate Source Lower Gate Sink Protection Over-Voltage Trip (V /VDAC) VSEN OCSET Current ...

Page 5

BLOCK DIAGRAM VSEN 10µ REFERENCE VDAC VID0 VID1 5-BITS DAC VID2 VID3 VID4 ERROR AMP FB COMP PIN DESCRIPTIONS PIN 1: VSEN - Converter output voltage sense pin. Connect this pin to the converter output. The PGOOD and ...

Page 6

PIN 4: VID0 PIN 5: VID1 PIN 6: VID2 PIN 7: VID3 PIN 8: VID4 - 5-bit DAC voltage select pin. TTL inputs used to set the internal voltage reference VDAC. When left open, internally pulled and ...

Page 7

PIN 20 Frequency Connecting a resistor (RT) from this pin to GND, increase the frequency by the following equation. ≅ F 200 KHz S PHYSICAL DIMENSIONS 20 LEAD PLASTIC SO (300 mil) (unit: mm adjustment ...

Related keywords