mc33566d2t ON Semiconductor, mc33566d2t Datasheet

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mc33566d2t

Manufacturer Part Number
mc33566d2t
Description
Smart Voltage Regulator For Peripheral Card Applications
Manufacturer
ON Semiconductor
Datasheet

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Part Number:
mc33566d2t-001
Manufacturer:
ON Semiconductor
Quantity:
200
MC33566
Smart Voltage Regulator for
Peripheral Card Applications
peripheral card applications complying with the instantly available
requirements as specified by ACPI objectives. The MC33566 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 5.0 V power supply or the 3.3 V aux supply.
either an internal low dropout 5.0 V−to−3.3 V 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
(5.0 V main supply available) the 3.3 V output is provided from the
internal low dropout regulator at an output current of 0.4 A. When the
motherboard enters sleep mode, the MC33566 operates from the 3.3 V
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 3.3 V even during host systems transitions to and from
sleep mode.
MC33566 Features:
© Semiconductor Components Industries, LLC, 2006
September, 2006 − Rev. 3
The MC33566 Low Dropout Regulator is designed for computer
The MC33566 provides a regulated output voltage of 3.3 V via
Output Current up to 0.4 A
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
+3.3 V
+5 V
in
aux
LDO
Detect
Ref &
Figure 1. Simplified Block Diagram
Compensation
Hysteresis
V
ref
&
5V detect
Comp
Driver
Hyst sw
Drive out
+3.3 V
out
1
External
P−channel
MOSFET
+3.3 V
External
4.7 μF
cap
out
†For information on tape and reel specifications,
MC33566D2T−1
MC33566D2T−1RK
1
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
Device
5
ORDERING INFORMATION
Pin
http://onsemi.com
A
WL = Wafer Lot
Y
WW = Work Week
Note: Tab is ground
D2T SUFFIX
= Assembly Location
= Year
CASE 936A
Package
D
D
D
1. Vaux
2. V
3. Gnd
4. V
5. Drv
2
2
2
PAK
Publication Order Number:
PAK
PAK
out
in
800 Tape & Reel
50 Units/Rail
MARKING
DIAGRAM
Shipping
1
AWLYWW
MC33566/D
661
M5
5

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mc33566d2t Summary of contents

Page 1

... V in LDO Figure 1. Simplified Block Diagram © Semiconductor Components Industries, LLC, 2006 September, 2006 − Rev MC33566D2T−1 MC33566D2T−1RK External Hyst sw Comp P−channel †For information on tape and reel specifications, Driver MOSFET Drive out including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specification Brochure, BRD8011/D ...

Page 2

PIN ASSIGNMENTS AND FUNCTIONS Pin # Pin Name 1 +3.3 V Auxiliary input. Typical voltage 3.3 V. aux 2 +5.0 V This is the input supply for the IC. Typical voltage 5.0 V. (Notes 1 and Gnd ...

Page 3

DC ELECTRICAL CHARACTERISTICS Characteristic +5.0 V Supply Voltage Range in Reverse Leakage Current from Output V Quiescent Current aux +5.0 V Quiescent Current, Operating in Load Capacitance (Note 9) REGULATOR OUTPUT Output Voltage (4.35 V ≤ V ≤ 5.5 V, ...

Page 4

V aux + LDO Input Blocking − The internal NPN pass transistor of the LDO regulator ensures that no significant reverse current will flow from +3.3 V back to the +5.0 V out 5.0 V input is ...

Page 5

V VIN TH(HI) V TH(LO) 3.8V DR 2.0V NOTE: rise and fall times (10 ≥ 100 μs. ( Figure 4. 5.0 V Detect Thresholds Diagram 200 V capacitor 5μF out 20mW ESR Phase ...

Page 6

... American Technical Support: 800−282−9855 Toll Free USA/Canada Japan: ON Semiconductor, Japan Customer Focus Center 2−9−1 Kamimeguro, Meguro−ku, Tokyo, Japan 153−0051 Phone: 81−3−5773−3850 http://onsemi.com 6 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. ...

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