MAX8564AEUB+T Maxim Integrated Products, MAX8564AEUB+T Datasheet

IC CNTRLR N-FET 10-UMAX

MAX8564AEUB+T

Manufacturer Part Number
MAX8564AEUB+T
Description
IC CNTRLR N-FET 10-UMAX
Manufacturer
Maxim Integrated Products
Type
Positive Adjustabler
Datasheet
1.MAX8564AEUB.pdf (15 pages)

Specifications of MAX8564AEUB+T

Number Of Outputs
2
Voltage - Output
0.5 ~ 1.8 V, 0.5 ~ 3.3 V
Current - Supply
660µA
Voltage - Input
5V, 12V
Operating Temperature
-40°C ~ 85°C
Package / Case
10-MSOP, Micro10™, 10-uMAX, 10-uSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX8563/MAX8564/MAX8564A ultra-low-output dual
and triple LDO controllers allow flexible and inexpensive
point-of-load voltage conversion in motherboards,
desknotes, notebooks, and other applications.
These parts feature a 0.5V reference voltage with ±1%
accuracy providing tight regulation of the output volt-
age. The MAX8563 has three n-channel MOSFET con-
troller outputs, and the MAX8564/MAX8564A has two
controller outputs.
Each controller output is adjustable from 0.5V to 3.3V
when V
= 5V. Each output is independently enabled and asserts
a POK signal when the output reaches 94% of the set
value. Each output is protected against a soft short-circuit
condition by an undervoltage comparator that disables
the output when it drops to under 80% of the set voltage
for more than 50µs. For a catastrophic short condition, the
regulators are shut down immediately if the output drops
below 60% of the set voltage.
The MAX8563 is available in a 16-pin QSOP
package, and the MAX8564/MAX8564A are available
in a 10-pin µMAX
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Motherboards
Dual/Triple Power Supplies
Desknotes and Notebooks
Graphic Cards
19-3290; Rev 2; 6/06
±1%, Ultra-Low Output Voltage, Dual and Triple
DD
= 12V and between 0.5V and 1.8V when V
®
________________________________________________________________ Maxim Integrated Products
package.
General Description
*2.5V OUTPUT ONLY WITH V
1.5V/1.5A
2.5V/2A*
3.3V 5% IN
OUT1
POK1
OUT3
Ultra-Low-Dropout
Voltage Regulators
Low-Voltage DSP, µP, and
Microcontroller Power
Supplies
C4
C9
1.8V 5% IN
Q3
Q1
Applications
DD
= 12V
R3
R1
C8
C1
R8
C10
C5
OFF
ON
R7
R9
R2
DD
DRV1
FB1
EN1
POK1
GND
N.C.
DRV3
FB3
MAX8563
Linear n-FET Controllers
♦ MAX8563: 3 Outputs
♦ MAX8564/MAX8564A: 2 Outputs
♦ ±1% Feedback Regulation
♦ Adjustable Output Voltage Down to 0.5V
♦ Can Use Ceramic Output Capacitors
♦ Wide Supply Voltage Range Permits Operation
♦ Individual Enable Control and POK Signal Allows
♦ Overload Protection Against Soft Short-Circuit
♦ Undervoltage Short-Circuit Protection
♦ Drive n-Channel MOSFETs
+Denotes lead-free package.
Pin Configurations appear at end of data sheet.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
MAX8563EEE
MAX8564EUB
MAX8564AEUB+
DRV2
POK2
POK3
V
EN2
N.C.
EN3
FB2
from 5V or 12V Rails
Sequencing
Condition
DD
5V OR 12V
PART
IN
C2
R6
R4
ON
ON
OFF
OFF
R5
C6
Typical Operating Circuit
C3
1.2V 5% IN
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
Q2
Ordering Information
C7
OUT2
1.05V/3A
POK2
POK3
PIN-
PACKAGE
16 QSOP
10 µMAX
10 µMAX
Features
CODE
U10-2
U10-2
E16-1
PKG
1

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MAX8564AEUB+T Summary of contents

Page 1

... Sequencing ♦ Overload Protection Against Soft Short-Circuit Condition ♦ Undervoltage Short-Circuit Protection ♦ Drive n-Channel MOSFETs PART MAX8563EEE MAX8564EUB Applications MAX8564AEUB+ +Denotes lead-free package. Pin Configurations appear at end of data sheet. µMAX is a registered trademark of Maxim Integrated Products, Inc 12V DRV1 DRV2 ...

Page 2

Ultra-Low Output Voltage, Dual and Triple Linear n-FET Controllers ABSOLUTE MAXIMUM RATINGS V to GND ............................................................-0.3V to +14V DD DRV1, DRV2, DRV3, EN1, EN2, EN3 to GND............................................-0. FB1, FB2, FB3, POK1, POK2, POK3 to GND ...........-0.3V to ...

Page 3

Ultra-Low Output Voltage, Dual and Triple ELECTRICAL CHARACTERISTICS (continued 5V EN1 EN2 EN3 GND PARAMETER POK_ Threshold Falling POK_ Threshold Rising at Startup POK_ Output Low Level POK_ Output ...

Page 4

Ultra-Low Output Voltage, Dual and Triple Linear n-FET Controllers (Circuit of Figure +25°C.) A POWER-ON SEQUENCING WITH OUT1 V IN1 V POK1 20ms/div ENABLE-ON SEQUENCING V IN1 EN1 V OUT1 V POK1 ...

Page 5

Ultra-Low Output Voltage, Dual and Triple V DD GND EN1 POK1 EN2 POK2 EN3 POK3 NAME PIN MAX8564/ MAX8563 MAX8564A Output n-MOSFET Drive. Drives the gate of an external n-channel MOSFET to regulate output 1. DRV1 is internally pulled ...

Page 6

Ultra-Low Output Voltage, Dual and Triple Linear n-FET Controllers NAME PIN MAX8564/ MAX8563 MAX8564A Enable Control for Output 2. Drive logic high to enable output 2, or logic low to disable the — EN2 output. Connect ...

Page 7

Ultra-Low Output Voltage, Dual and Triple 1. OUT1 C5 1.5V/1. OFF POK1 3. OUT3 C10 2.5V/2A *2.5V OUTPUT ONLY WITH V = 12V DD Figure 1. ...

Page 8

Ultra-Low Output Voltage, Dual and Triple Linear n-FET Controllers 1. C15 Q4 OUT1 C20 1.5V/1.5A C14 R16 R17 OFF POK1 Figure 2. MAX8564/MAX8564A Typical Application Circuit MAX8563 External Component List COMPONENTS QTY DESCRIPTION 2.2µF, 10V X5R ceramic ...

Page 9

Ultra-Low Output Voltage, Dual and Triple Detailed Description The MAX8563/MAX8564/MAX8564A triple and dual LDO controllers allow flexible and inexpensive voltage conversion by controlling the gate of an external n-MOSFET in a source-follower configuration. The MAX8563/MAX8564/MAX8564A consist of multiple identical ...

Page 10

Ultra-Low Output Voltage, Dual and Triple Linear n-FET Controllers MAX8563 MAX8564 MAX8564A EN_ Figure 4. Voltage-Divider on EN_ Set R = 100k . The above equations also ...

Page 11

Ultra-Low Output Voltage, Dual and Triple V OUT set the output voltage to 0.5V, disconnect R FB_ and connect it to OUT_; this change maintains the minimum load requirement on ...

Page 12

Ultra-Low Output Voltage, Dual and Triple Linear n-FET Controllers For the best transient response in applications with large step loads (see the Input and Output Capacitor Selection section for output capacitance requirements), use the following equations to select the ...

Page 13

Ultra-Low Output Voltage, Dual and Triple TOP VIEW DRV1 1 FB1 2 EN1 3 POK1 4 GND 5 N.C. 6 DRV3 7 FB3 8 ______________________________________________________________________________________ Linear n-FET Controllers DRV2 14 FB2 MAX8563 13 EN2 DRV1 ...

Page 14

Ultra-Low Output Voltage, Dual and Triple Linear n-FET Controllers (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) 14 ______________________________________________________________________________________ Package Information PACKAGE OUTLINE, QSOP ...

Page 15

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 15 © 2006 Maxim Integrated Products ...

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