MC33566 Dropout Regulator designed computer peripheral card applicatio

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MC33566 Dropout Regulator designed computer peripheral card applicatio

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MC33566 Smart Voltage Regulator Peripheral Card Applications
MC33566 Dropout Regulator designed computer peripheral card applications complying with instantly available requirements specified ACPI objectives. MC33566 permits glitch-free transitions from "sleep" "active" system modes internal logic circuitry detect whether system being powered from motherboard main power supply supply. MC33566 provides regulated output voltage either internal dropout V-to-3.3 voltage regulator external P-channel MOSFET, depending operating status system which card installed. During normal operating mode (5.0 main supply available) output provided from internal dropout regulator output current When motherboard enters sleep mode, MC33566 operates from supply routes current output external P-channel MOSFET bypass transistor controlled drive pin. result, output voltage provided peripheral card remains constant even during host systems transitions from sleep mode.
MC33566 Features: http://onsemi.com MARKING DIAGRAM
D2PAK SUFFIX CASE 936A
AWLYWW
Vaux Vout
Note: ground Assembly Location Wafer Year Work Week
Output Current Excellent Line Load Regulation Dropout Voltage Prevents Reverse Current Flow During Sleep Mode Glitch-Free Transfer from Sleep Mode Active Mode Compatible with Instantly Available Systems
+3.3 Vaux
ORDERING INFORMATION
Device MC33566D2T-1 Package D2PAK D2PAK Shipping Units/Rail 2500 Tape Reel
Compensation Hysteresis
Hyst Comp Driver Drive
External P-channel MOSFET
MC33566D2T-1RK
Detect
detect Vref
+3.3 Vout
+3.3 Vout External
Figure Simplified Block Diagram
Semiconductor Components Industries, LLC, 2001
March, 2001 Rev.
Publication Order Number: MC33566/D
MC33566
ASSIGNMENTS FUNCTIONS
Name +3.3 Vaux +5.0 +3.3 Vout Auxiliary input. Typical voltage This input supply Typical voltage (Notes Logic power ground. output provided application circuit (output current sourced this from input.) This output drives P-channel MOSFET with 2000 "effective" gate capacitance. Recommended devices MMFT5P03HD MTSF1P02HD. Drive active internal pull-up pull-down circuitry guarantee fast transitions. Description
Drive
MAXIMUM RATINGS 25°C, unless otherwise noted)
Rating +5.0 Supply Voltage Symbol Operating Ambient Temperature Operating Junction Temperature Lead Temperature (Soldering, seconds) Storage Temperature Package Thermal Resistance Tstg (Note Value -0.5 (Note -5.0 +150 +150 Unit °C/W
ELECTRICAL SPECIFICATIONS (Notes
Characteristic Drive High Delay (Vin ramping Cdrive measured from +5.0 VthresHi VDrive Drive Delay (Vin ramping down) Cdrive measured from +5.0 VthresLo VDrive Symbol Unit
Detect Thresholds Diagram. Recommended source impedance supply: 0.12 This will ensure that Rsource Vhyst, thus avoiding driveout toggling during detect threshold transitions. should allowed negative relative ground. Mounted recommended minimum FR4, 2-oz. copper circuit board. specs guaranteed characterization, production tested after characterization. Figure Application Block Diagram. Timing Diagram.
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MC33566
ELECTRICAL CHARACTERISTICS (Note
Characteristic +5.0 Supply Voltage Range Reverse Leakage Current from Output Vaux Quiescent Current +5.0 Quiescent Current, Operating Load Capacitance (Note REGULATOR OUTPUT Output Voltage (4.35 25°C -5°C 150°C) In-to-Out Voltage (3.9 4.35 Vaux Voltage Voltage (Vin Line Regulation Load Regulation DETECT Threshold Voltage (+5.0 Falling, High Threshold Voltage (+5.0 Rising, Hysteresis DRIVE OUTPUT Output Peak Source Current (+5.0 VthresHi) Output Peak Sink Current (+5.0 VthresLo) Output Voltage (IoL VthresLo) High Output Voltage (IoH Ipeak Ipeak mVdc VthresLo VthresHi Vhyst 0.05 4.05 4.35 +3.3 Vout 3.267 3.234 Voutmax Linereg Loadreg 3.30 3.30 3.333 3.366 Symbol +5.0 Ireverse Iqaux Iqvin Cload 4.35 Unit
-5°C 70°C, 4.35 Cload unless otherwise noted. minimum over temperature; recommended; maximum.
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MC33566
+3.3 Vaux
Compensation Hysteresis
Hyst Comp Driver Drive
External P-channel MOSFET
Detect
detect Vref
+3.3 Vout
+3.3 Vout
External
Figure Functional Block Diagram
FUNCTIONAL DESCRIPTION Input Blocking internal pass transistor Glitch-free Transfer design detect regulator ensures that significant reverse current circuitry drive control circuitry guarantees that will flow from +3.3 Vout back +5.0 input when +3.3 Vout will exceed output voltage specification input powered supply present. listed table Operating Specifications even with +5.0 ramping down extremes slew Volt Detect Internal circuitry detects presence rates table Operating Specifications. input supply. When supply drops below Offset Voltage Performance ensure performance given threshold, +3.3 bypass transistor external P-channel MOSFET) enabled. detect logic when external offsets present +5.0 +3.3 power inputs, device been designed active throughout entire range ramp-up from Additionally, drive signal never turned capable operating with either both these inputs inappropriately during ramp-up +5.0 rising from falling zero volts, with offsets 0.05 supply. Also, +3.3 Vout never drops below while inputs ramp down. +5.0 above detect minimum threshold.
3.3V
Motherboard/ Mainboard Slot
Card Circuitry
Figure Application Block Diagram
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MC33566
4.4V VTH(HI) VTH(LO) VHYST 4.4V
3.8V
3.8V
2.0V
2.0V
2.0V
2.0V
NOTE: rise fall times (10% 90%)
NOTE: rise fall times (10% 90%)
Figure Detect Thresholds Diagram
Figure Timing Diagram
Vout capacitor 20mW Phase Margin Gain (dB) Phase Margin Gain (dB)
Vout capacitor 20mW
Phase Margin
Phase Margin
Gain
Gain
Frequency (Hz)
Frequency (Hz)
NOTE: Vout capacitor over operating temperature range. Maximum permissable over operating temperature range.
Figure Predicted Gain Phase Zero Load Current
Figure Predicted Gain Phase Full Load Current
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MC33566
PACKAGE DIMENSIONS
(D2PAK) SUFFIX PLASTIC PACKAGE CASE 936A-02 ISSUE
NOTES: DIMENSIONING TOLERANCING ANSI Y14.5M, 1982. CONTROLLING DIMENSION: INCH. CONTOUR OPTIONAL WITHIN DIMENSIONS DIMENSIONS ESTABLISH MINIMUM MOUNTING SURFACE TERMINAL DIMENSIONS INCLUDE MOLD FLASH GATE PROTRUSIONS. MOLD FLASH GATE PROTRUSIONS EXCEED 0.025 (0.635) MAXIMUM. INCHES 0.386 0.403 0.356 0.368 0.170 0.180 0.026 0.036 0.045 0.055 0.067 0.539 0.579 0.050 0.000 0.010 0.088 0.102 0.018 0.026 0.058 0.078 0.116 0.200 0.250 MILLIMETERS 9.804 10.236 9.042 9.347 4.318 4.572 0.660 0.914 1.143 1.397 1.702 13.691 14.707 1.270 0.000 0.254 2.235 2.591 0.457 0.660 1.473 1.981 2.946 5.080 6.350
OPTIONAL CHAMFER
TERMINAL
0.010 (0.254)
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MC33566
Notes
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MC33566
Semiconductor trademarks Semiconductor Components Industries, (SCILLC). SCILLC reserves right make changes without further notice products herein. SCILLC makes warranty, representation guarantee regarding suitability products particular purpose, does SCILLC assume liability arising application product circuit, specifically disclaims liability, including without limitation special, consequential incidental damages. "Typical" parameters which provided SCILLC data sheets and/or specifications vary different applications actual performance vary over time. operating parameters, including "Typicals" must validated each customer application customer's technical experts. SCILLC does convey license under patent rights rights others. SCILLC products designed, intended, authorized components systems intended surgical implant into body, other applications intended support sustain life, other application which failure SCILLC product could create situation where personal injury death occur. Should Buyer purchase SCILLC products such unintended unauthorized application, Buyer shall indemnify hold SCILLC officers, employees, subsidiaries, affiliates, distributors harmless against claims, costs, damages, expenses, reasonable attorney fees arising directly indirectly, claim personal injury death associated with such unintended unauthorized use, even such claim alleges that SCILLC negligent regarding design manufacture part. SCILLC Equal Opportunity/Affirmative Action Employer.
PUBLICATION ORDERING INFORMATION
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MC33566/D

MC33566 Dropout Regulator designed computer peripheral card applicatio

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