AIC1567 AIC [Analog Intergrations Corporation], AIC1567 Datasheet

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AIC1567

Manufacturer Part Number
AIC1567
Description
5-bit DAC, Synchronous PWM Power Regulator with Linear Controller
Manufacturer
AIC [Analog Intergrations Corporation]
Datasheet

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Analog Integrations Corporation
DS-1567-00
FEATURES
APPLICATIONS
Switching Regulator and Low Dropout Linear
Regulator on single chip.
Simple Voltage-Mode PWM Control.
Dual N-Channel MOSFET Synchronous Drive.
Fast Transient Response.
±1.0% 5-Bit Digital-to-Analog Output Voltage.
Adjustable Current Limit Without External Sense
Resistor.
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.
Power Supply for Pentium II, Power PC and
Alpha Microprocessors.
High-Power 5V to 3.xV DC/DC Regulators.
Low-Voltage Distributed Power Supplies.
5-bit DAC, Synchronous PWM Power Regulator
4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
TEL: 886-3-5772500
FAX: 886-3-5772510
The AIC1567 is a high power, high efficiency
switching regulator controller optimized for high
performance microprocessor applications. It is
designed to drive dual N-channel MOSFET in a
standard
Featuring a low dropout linear regulator and a
digitally programmable switching regulator, the
AIC1567 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 ±1.0% over temperature and
line voltage shifts.
The internal oscillator of the AIC1567 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/µS slew rate, which enables
high converter bandwidth for fast transient
response.
DESCRIPTION
with Linear Controller
synchronous
control
can
buck
provide
www.analog.com.tw
AIC1567
topology.
output
1

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AIC1567 Summary of contents

Page 1

... Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC DS-1567-00 TEL: 886-3-5772500 with Linear Controller DESCRIPTION The AIC1567 is a high power, high efficiency switching regulator controller optimized for high performance microprocessor applications designed to drive dual N-channel MOSFET in a standard ...

Page 2

... ORDERING INFORMATION AIC1567 XX PACKAGE TYPE S: SMALL OUTLINE TEMPERATURE RANGE C: 0°C~70°C TYPICAL APPLICATION CIRCUIT C8 0.1µF VID0 VID1 VID2 VID3 VID4 C7 33pF C6 R6 90.9K 1000pF ORDER NUMBER AIC1567CS (PLASTIC SO) 1000pF R2 2. 0.1µF 1µF VSEN RT OCSET OVP SS VCC VID0 LGATE VID1 PGND VID2 ...

Page 3

... Ta=25° ° ° ° C, unless otherwise TEST CONDITIONS UGATE Open V =4.5V OCSET R Open T 6KΩ< R <200KΩ Open T SYMBOL MIN. TYP. MAX VCC 7 8.5 1.26 170 200 230 -20 +20 ∆V 1.5 OSC AIC1567 UNIT KHz % V P-P 3 ...

Page 4

... VSEN DAC OCSET V =0V, PHASE V =VDAC=50mV FB V =0, V =5.0V, VSEN OCSET V =0V, V =0V PHASE Rising VSEN ) V Falling VSEN Upper and Lower Threshold I =5mA PGOOD AIC1567 MIN. TYP. MAX. SYMBOL -1.0 +1.0 76 GBW 8.0 12 UGATE R 5.5 10 UGATE R 8.0 12 LGATE R 5.5 10 LGATE 106 115 ...

Page 5

... CLN 20mV POWER-ON RESET 115 OVP 110 POWER GOOD 90 50 SOFT START + + + - - ERROR PWM AMP COMPARATOR OSCILLATOR - CURRENT SENSE AIC1567 OVER CURRENT + - 200µA CONTROL LOGIC VCC LINEAR AMP. 1. VCC OVP PGOOD OCSET PHASE BOOT UGATE GND LGATE PGND RT LIDRI VLFB 5 ...

Page 6

... AIC1567 FB pin to indicator pin. VID0 VDAC 0 3.5V 1 3.4V 0 3.3V 1 3.2V 0 3.1V 1 3.0V 0 2.9V 1 2.8V 0 2.7V 1 2.6V 0 2.5V 1 2.4V 0 2.3V 1 2.2V 6 ...

Page 7

... SCR in the event of an over voltage condition. - Frequency adjustment Connecting a resistor (RT) from this pin to GND, increase the frequency by the following equation × F ≅ 200 KHz + S log R SYMBOL MIN A 2.35 A1 0.10 B 0.33 C 0.23 D 15.20 15.60 E 7.40 e 1.27(TYP) H 10.00 10.65 L 0.40 AIC1567 of the pin MAX 2.65 0.30 0.51 0.32 7.60 1.27 7 ...

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