MC33567D-3R2 ON Semiconductor, MC33567D-3R2 Datasheet

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MC33567D-3R2

Manufacturer Part Number
MC33567D-3R2
Description
Manufacturer
ON Semiconductor
Datasheet

Specifications of MC33567D-3R2

Lead Free Status / RoHS Status
Not Compliant

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Part Number:
MC33567D-3R2
Manufacturer:
ON
Quantity:
12 468
MC33567
Dual Linear Controller
for High Current
Voltage Regulation
facilitate power management for motherboard applications where
reliable regulation of high current supply planes is required. It
provides the Drive, Sense and Control signals to interface two
external, N−channel MOSFETs for regulating two different supply
planes. Undervoltage short circuit detection places the operation of the
system into a protected mode pending removal of the short.
Features
Applications
December, 2003 − Rev. 3
The MC33567 Dual Linear Power Supply Controller is designed to
SHDN2
Pb−Free Lead Finish
Two Independent Regulated Supplies
MC33567−1: 1.515 V − Supply for GTL and AGP Planes
MC33567−2: Dual 2.525 V Supplies for Clock and Memory
MC33567−3: 2.3 V − Voltage Supply
Undervoltage Short Circuit Protection
Supply Undervoltage Detection
Drive Capability for N−Channel MOSFETs
Bypass Function for 3.3 V AGP Card Detection
Pb−Free Package May be Available. The G−Suffix Denotes a
Motherboards
Dual Power Supplies
SHDN1
Semiconductor Components Industries, LLC, 2003
V CC
GND
4
3
8
5
+
8.5 V
+
1.818 V − Supply for I/O Plane and Memory
1.2 V − Voltage Supply
Figure 1. Simplified Block Diagram
3.3 V
3.3 V
V in Bypass On (MC33567−1 only)
66 kW
66 kW
REF
UVLO
Termination
Undervoltage
Undervoltage
Startup &
Shutdown
Startup &
Shutdown
V CC
V CC
REF
REF
Control
Control
V CC
V CC
SENSE2
1
SENSE1
DRV1
DRV2
1
2
7
6
3.3 V
3.3 V
V out1
V out2
C L
C L
See detailed ordering and shipping information in the package
dimensions section on page 11 of this data sheet.
8
SENSE1
SHDN1
DRV1
1
GND
ORDERING INFORMATION
PIN CONNECTIONS
x = 1, 2 or 3
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
http://onsemi.com
1
2
3
4
CASE 751
D SUFFIX
SO−8
Publication Order Number:
8
7
6
5
MARKING
DIAGRAM
V CC
DRV2
SENSE2
SHDN2
M567x
MC33567/D
ALYW

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MC33567D-3R2 Summary of contents

Page 1

MC33567 Dual Linear Controller for High Current Voltage Regulation The MC33567 Dual Linear Power Supply Controller is designed to facilitate power management for motherboard applications where reliable regulation of high current supply planes is required. It provides the Drive, Sense ...

Page 2

PIN ASSIGNMENTS AND FUNCTIONS PIN # PIN NAME 1 DRV1 Gate 1 drive. Is internally clamped to ground in power down mode. 2 SENSE1 Sense 1 line. Sense load voltage and provides feedback to regulator. 3 SHDN1 TTL high level ...

Page 3

DC ELECTRICAL CHARACTERISTICS ( SHDN1 = V SHDN2 = 2 typical values shown are for unless otherwise noted.) Characteristic Supply Voltage ...

Page 4

Introduction The MC33567 series is a family of Dual Linear FET Controllers designed for Power Management applications where high current, voltage regulation is needed. Some computer applications include: 1.2 V − Power Supply 1.515 V − AGP (Advanced Graphic Port) ...

Page 5

... N−Channel MOSFET Selection: The MC33567 was characterized ON Semiconductor’s MTD3055VL N−channel MOSFET. Other MOSFETs can be used with the MC33567 as long as power and stability requirements are met. Power: A MOSFET with a low drain−source on resistance (R DS(on) ) will insure the output voltage is not drastically reduced due to excessive voltage drop across the MOSFET ...

Page 6

... For a more detailed analysis on linear regulators stability please refer to ON Semiconductor application note AND8037/D. MC33567 Adjustable Output Voltage: The MC33567 will regulate V out to its preset voltage level, referenced at the sense pin ...

Page 7

... C1, C2, C3 Q1, Q2 MC33567 DRV1 DRV2 SENSE1 7 2 MC33567 C3 SENSE2 SHDN1 3 6 SHDN2 4 5 Figure 7. Application Block Diagram Part/Description 100 F Electrolytic Capacitor MC33567 MTD3055VL http://onsemi.com 7 Q2 LOAD2 SHDN2 C4 SHDN1 100 F LOAD1 Vendor Notes Various ON Semiconductor ON Semiconductor N−Channel MOSFET AGP Card ...

Page 8

MC33567 TYPICAL CHARACTERISTICS 200 PHASE MARGIN PHASE = kHz 100 GAIN LOAD = 200 mF R ESR = 50 mW −100 10 100 1,000 10,000 f, FREQUENCY (Hz) Figure 8. ...

Page 9

Regulator 1 1.35 1.30 1.25 1.20 Regulator 2 1.15 1.10 − TEMPERATURE ( C) Figure 12. Short Circuit/Undervoltage Detect Threshold (Suffix 1) vs. Ambient Temperature 2.320 Gate Drive 2 Open 2.315 ...

Page 10

Startup Threshold 8.4 8.3 8.2 8.1 Minimum Operating Threshold 8.0 7.9 − TEMPERATURE ( C) Figure 18. Undervoltage Lockout Threshold vs. Ambient Temperature 10.75 V SHDN = 4.2 V 10.70 ...

Page 11

... Device MC33567D−1 MC33567D−1R2 MC33567D−1R2G MC33567D−2 MC33567D−2R2 MC33567D−3 MC33567D−3R2 †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. *While on bypass mode. MC33567 ...

Page 12

... *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “ ...

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