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| Order this document by MC33565/D Smart Voltage Regulator for Peripheral Card Applications The MC33565 Low Dropout Regulator is designed for computer peripheral card applications complying with the instantly available requirements as specified by ACPI objectives. The MC33565 permits glitch-free transitions from "sleep" to "active" system modes and has internal logic circuitry to detect whether the system is being powered from the motherboard main 5V power supply or the 3.3V aux supply. The MC33565 provides a regulated output voltage of 3.3V via either an internal low drop out 5.0V-to-3.3V voltage regulator or an external P-channel MOSFET, depending on the operating status of the system in which the card is installed. During normal operating mode (5V main supply available) the 3.3V output is provided from the internal low dropout regulator at an output current of 200mA. When the motherboard enters sleep mode, the MC33565 operates from the 3.3V aux supply and routes the aux current to the output via the external P-channel MOSFET bypass transistor controlled by the drive out pin. As a result, the output voltage provided to the peripheral card remains constant at 3.3V even during transitions to and from sleep mode. MC33565 Features: MC33565 200 mA INTELLIGENT LDO REGULATOR WITH SMART BYPASS CONTROL SEMICONDUCTOR TECHNICAL DATA 8 * * * * * * * * 1 Output Regulated to 2% Over Temperature Output current up to 200mA Excellent Line and Load Regulation Low Dropout Voltage Prevents reverse current flow during sleep mode Glitch-free transfer from sleep mode to active mode Compatible with Instantly Available PC systems Evaluation Kit Available: (P.N. MC33565EVK) Simplified Block Diagram +3.3 Vin D SUFFIX PLASTIC PACKAGE CASE 751-06 (SO-8) 1 8 +5 Vin N/C +3.3 Vin Gnd Drive out 2 3 4 7 MC33565 6 5 +3.3 Vout Sense in N/C Compensation & Hysteresis Hyst sw Comp Driver Drive out External P-channel MOSFET Pins 2 and 5 Not Connected ORDERING INFORMATION Device +3.3 Vout MC33565D Type 3.3V Package SO-8 Ref & Detect 5V detect Vref +3.3 Vout +5 Vin Sense in LDO External 4.7 F cap (c) Motorola, Inc. 1999 Rev 0, 6/99 MOTOROLA ANALOG IC DEVICE DATA 1 MC33565 MAXIMUM RATINGS (TC = 25C, unless otherwise noted) Parameter Input Voltage, VCC Symbol Vmax Vmin Operating Ambient Temperature Operating Junction Temperature Lead Temperature (Soldering, 10 seconds) Storage Temperature Range Package Thermal Resistance, Junction to Ambient NOTES: 1. Ta TJ TL Tstg RJA1 Max Value 7.0 -0.5 -5 to +70 - 5 to +150 300 - 55 to +150 180 Unit Vdc Vdc C C C C C/W Mounted on recommended minimum PCB pad on FR4, 2-oz. copper circuit board. AC ELECTRICAL SPECIFICATIONS(3) (4) Parameter Drive High Delay (Vin ramping up) CDrive = 1.2 nF, measured from +5 Vin = VthresHi to VDrive = 2V Drive Low Delay (Vin ramping down) CDrive = 1.2 nF, measured from +5 Vin = VthresLo to VDrive = 2V Symbol tDH tDL Min Typ 0.5 0.5 Max 3.5 3.5 Unit S S NOTES: (1.) See 5V Detect Thresholds Diagram. (2.) Recommended source impedance for 5V supply: 0.25W. This will ensure that Io x Rsource < Vhyst, thus avoiding driveout toggling during 5V detect threshold transitions. (3.) See Figure 2. Application Block Diagram. (4.) See Timing Diagram. PIN ASSIGNMENTS AND FUNCTIONS PIN # 1 2,5 3 4 6 7 8 PIN NAME +5 Vin N/C +3.3 Vin Gnd Sense in +3.3 Vout Drive out PIN DESCRIPTION This is the input supply for the IC. Typical voltage 5 V. (1) (2) Reserved Auxiliary input. Typical voltage 3.3 V. Logic and Power Gnd. Load-sense voltage input to internal regulator. 3.3V output provided to the application circuit (output current is sourced to this pin from the 5V input.) This output drives a P-channel MOSFET with up to 2000pF of "effective" gate capacitance. Recommended device is MGSF1P02ELT MOSFET. Drive out has active internal pull-up and pull-down circuitry to guarantee fast transitions. DEVICE MARKING Device MC33565D Type 3.3 V Sub-type Marking (1st Line) MC565 2 MOTOROLA ANALOG IC DEVICE DATA MC33565 DC ELECTRICAL CHARACTERISTICS(1) Characteristic +5 Vin Supply Voltage Range Reverse Leakage Current from Output VAux quiescent current +5 Vin quiescent current, operating Load Capacitance(2) Cload Symbol +5 Vin Ireverse Min 4.3 -- -- -- 4.7 Typ 5.0 -- -- -- 22 Max 5.5 25 3.0 10 -- Unit Vdc A mA mA mF Vdc REGULATOR OUTPUT Output Voltage (4.3V Vin 5.5V, 0mA Io 200mA) TA = 25C (TA = -5C to 150C) In-to-Out Voltage (3.9V Vin 4.3V, Vaux = 3.3V) Voltage Out at Max Voltage In (Vin = 7V) Line Regulation (Io = 200 mA) Load Regulation (Io = 0 to 200 mA) +3.3 Vout 3.267 3.234 Vd Voutmax 3.0 3.1 -- -- 3.30 3.30 -- 3.3 -- -- 3.333 3.366 -- 3.5 0.4 0.4 Vdc Vdc % % 5V DETECT Low Threshold Voltage (+5 Vin falling) High Threshold Voltage (+5 Vin rising) Hysteresis VthresLo VthresHi VHyst 3.9 -- 0.12 4.05 4.2 0.15 4.3 4.3 0.18 Vdc Vdc Vdc DRIVE OUTPUT Output peak source Current (+5 Vin > VthresHi) Output peak sink Current (+5 Vin < VthresLo) Low Output Voltage (IoL = 200 A, Vin < VthresLo) High Output Voltage (IoH = 200 A) NOTE: 1. (-5C 15 15 -- 3.4 -- -- 100 V5-0.8 -- -- 200 -- mA mA mVdc Vdc MOTOROLA ANALOG IC DEVICE DATA 3 MC33565 +3.3 Vin Compensation & Hysteresis Hyst sw Comp Driver Drive out External P-channel MOSFET +3.3 Vout Ref & Detect 5V detect Vref +3.3 Vout +5 Vin Sense in LDO External 4.7 F cap Figure 1. Functional Block Diagram FUNCTIONAL DESCRIPTION Input Blocking - The internal NPN pass transistor of the LDO regulator ensures that no significant reverse current will flow from +3.3 Vout back to the +5 Vin input when the 5V input is not powered and the 3.3 Vin supply is present. 5 Volt Detect - Internal circuitry detects the presence of the 5V input supply. When the 5V supply drops below a given threshold, the +3.3 Vin bypass transistor (an external P-channel MOSFET) is enabled. The 5V detect logic is active throughout the entire range of ramp-up from 0 to 5.5V. Additionally, the Drive out signal is never turned ON or OFF inappropriately during ramp-up of the +5 Vin supply. Also, +3.3 Vout never drops below 3.0V while +5 Vin is above the 5V detect minimum threshold. Glitch-free Transfer - The design of the 5V detect circuitry and Drive out control circuitry guarantees that the 3.3V aux +3.3 Vout will not exceed the output voltage specification listed in the table of DC Operating Specifications even with +5 Vin ramping up and down at the extremes of the slew rates in the table of AC Operating Specifications (provided the device is used with an MGSF1P02ELT PMOS FET on Drive out along with a minimum 4.7F capacitor on the +3.3 Vout). Offset Voltage Performance - To ensure performance when external offsets are present on the +5 Vin and +3.3 Vin power inputs, the device has been designed to be capable of operating with either one or both of these inputs rising from or falling to zero volts, or with offsets of 0.05V to 0.9V as the inputs ramp up and down. Motherboard/ Mainboard PCI Slot 5V +5 Vin 1 8 Drive out +3.3 Vout 2 7 N/C +3.3 Vin 3 MC33565 6 Sense in N/C 4.7 F PCI NIC/Card Circuitry Gnd 4 5 Figure 2. Application Block Diagram 4 MOTOROLA ANALOG IC DEVICE DATA MC33565 4.4V VIN VTH(HI) VTH(LO) 3.8V 3.8V tDH tDL VHYST VIN 4.4V DR 2.0V 2.0V DR 2.0V 2.0V NOTE: (1) VIN rise and fall times (10% to 90%) to be 100s. NOTE: (1) VIN rise and fall times (10% to 90%) to be 100ns. Figure 3. 5V Detect Thresholds Diagram Figure 4. Timing Diagram 200 Vout capacitor 5F 20mW ESR Phase Margin or Gain (dB) Phase Margin or Gain (dB) 200 Vout capacitor 5F 20mW ESR 100 Phase Margin 100 Phase Margin Gain dB Gain dB 0 101 103 Frequency (Hz) 105 0 101 103 Frequency (Hz) 105 NOTE: Vout capacitor 4.7F over operating temperature range. Maximum ESR permissable = 500mW over operating temperature range. Figure 5. Predicted Gain and Phase at Zero Load Current Figure 6. Predicted Gain and Phase at Full Load Current MOTOROLA ANALOG IC DEVICE DATA 5 MC33565 OUTLINE DIMENSIONS D SUFFIX PLASTIC PACKAGE CASE 751-06 (SO-8) ISSUE T NOTES: 1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994. 2. DIMENSIONS ARE IN MILLIMETER. 3. DIMENSION D AND E DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE. 5. DIMENSION B DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.127 TOTAL IN EXCESS OF THE B DIMENSION AT MAXIMUM MATERIAL CONDITION. DIM A A1 B C D E e H h L MILLIMETERS MIN MAX 1.35 1.75 0.10 0.25 0.35 0.49 0.19 0.25 4.80 5.00 3.80 4.00 1.27 BSC 5.80 6.20 0.25 0.50 0.40 1.25 0_ 7_ A 8 D 5 C E 1 4 H 0.25 M B M h B C e A SEATING PLANE X 45 _ q L 0.10 A1 B 0.25 M CB S A S q 6 MOTOROLA ANALOG IC DEVICE DATA MC33565 NOTES MOTOROLA ANALOG IC DEVICE DATA 7 MC33565 Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola 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 consequential or incidental damages. "Typical" parameters which may be provided in Motorola data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. Motorola does not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer. Mfax is a trademark of Motorola, Inc. How to reach us: USA / EUROPE / Locations Not Listed: Motorola Literature Distribution; P.O. Box 5405, Denver, Colorado 80217. 1-303-675-2140 or 1-800-441-2447 Customer Focus Center: 1-800-521-6274 MfaxTM: RMFAX0@email.sps.mot.com - TOUCHTONE 1-602-244-6609 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; Silicon Harbour Centre, Motorola Fax Back System - US & Canada ONLY 1-800-774-1848 2, Dai King Street, Tai Po Industrial Estate, Tai Po, N.T., Hong Kong. - http://sps.motorola.com/mfax/ 852-26629298 HOME PAGE: http://motorola.com/sps/ JAPAN: Motorola Japan Ltd.; SPD, Strategic Planning Office, 141, 4-32-1 Nishi-Gotanda, Shinagawa-ku, Tokyo, Japan. 81-3-5487-8488 8 MC33565/D MOTOROLA ANALOG IC DEVICE DATA |
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