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MAX8518EUB+T

P1-P3P4-P6P7-P9P10-P10
General Description
The MAX8516/MAX8517/MAX8518 low-dropout linear
regulators operate from input voltages as low as 1.425V
and are able to deliver up to 1A of continuous output
current with a maximum dropout voltage of only 200mV.
The output voltage can be set from 0.5V to (V
IN
- 0.2V)
and is 1.4% accurate over load and line variations, from
0°C to +85°C.
These regulators use small, 1µF ceramic input capaci-
tors and 4.7µF ceramic output capacitors to deliver 1A
output current. High bandwidth provides excellent tran-
sient response and limits the output voltage deviation to
45mV for a 20mA to 1A load step, with only a 4.7µF
ceramic output capacitor, and the voltage deviations can
be reduced further by increasing the output capacitor.
Designed with an internal p-channel MOSFET pass
transistor, the MAX8516/MAX8517/MAX8518 feature
low 340µA (typ) supply current during dropout condi-
tions. Soft-start reduces inrush current. Other features
include a logic-controlled shutdown mode, short-circuit
protection, and thermal-overload protection.
The MAX8517 features a power-OK (POK) output that
transitions high when the regulator output is within
±10% of its nominal output voltage. The MAX8518
features a 150ms power-on reset output.
The parts are packaged in a 10-pin µMAX
®
package that
includes an exposed pad for optimal power dissipation.
Applications
Servers
Storage
Networking
Base Stations
Optical Modules
Features
♦ 1.425V to 3.6V Input Voltage Range
♦ Guaranteed 200mV Dropout at 1A Output Current
♦ ±1.4% Output Accuracy Over Load, Line, and
Temperature (0°C to +85°C), ±0.6% Initial Accuracy
♦ Compatible with Ceramic Capacitors
♦ Fast Transient Response
♦ 320µA Operating Supply Current
♦ <25µA Shutdown Supply Current
♦ Short-Circuit Protection
♦ Thermal-Overload Protection
♦ Soft-Start Limits Inrush Current
MAX8516/MAX8517/MAX8518
1.425V to 3.6V Input, 1A,
0.2V Dropout LDO Regulators
________________________________________________________________
Maxim Integrated Products
1
Ordering Information
19-3188; Rev 2; 9/09
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com
EVALUATION KIT
AVAILABLE
PART TEMP RANGE PIN-PACKAGE
MAX8516EUB -40°C to +85°C 10 µMAX
MAX8517EUB -40°C to +85°C 10 µMAX
MAX8517EUB/V -40°C to +85°C 10 µMAX
MAX8518EUB -40°C to +85°C 10 µMAX
1
2
3
4
5
10
9
8
7
6
N.C.
OUT
OUT
FBN.C.
IN
IN
EN
MAX8516
µMAX
TOP VIEW
GNDN.C.
1
2
3
4
5
10
9
8
7
6
N.C.
OUT
OUT
FBPOK
IN
IN
EN
MAX8517
µMAX
GNDN.C.
1
2
3
4
5
10
9
8
7
6
N.C.
OUT
OUT
FBN.C.
IN
IN
EN
MAX8518
µMAX
GNDPOR
Pin Configurations
MAX8516
MAX8517
MAX8518
1µF
4.7µF
INPUT
1.425V TO 3.6V
OUTPUT
0.5V TO (V
IN
- 0.2V), 1A
POWER-ON RESET
POWER-OK
ON
OFF
IN_
POR (MAX8518)
POK (MAX8517)
EN GND
FB
OUT_
Typical Operating Circuit
Post Regulators
Notebooks
PDAs
ATE
1
0
µ
M
A
X
3
m
m
x
5
m
m
µMAX is a registered trademark of Maxim Integrated Products, Inc.
/V Denotes an automotive qualified part.
MAX8516/MAX8517/MAX8518
1.425V to 3.6V Input, 1A,
0.2V Dropout LDO Regulators
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1. V
IN
= +1.8V, V
OUT
= +1.5V, EN = IN, I
OUT
= 1mA, T
A
= -40°C to +85°C, unless otherwise noted.) (Note 1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
IN, EN, POK (MAX8517), POR (MAX8518),
FB to GND .........................................................-0.3V to +4.0V
OUT to GND ..................................................-0.3V to (IN + 0.3V)
Output Short-Circuit Duration.....................................Continuous
Continuous Power Dissipation
(T
A
= +70°C, EP soldered to PCB)
10-Pin µMAX (derate 10.3mW/°C above +70°C) .........824mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+240°C
PARAMETER CONDITIONS MIN TYP MAX UNITS
IN
Input Voltage Range 1.425 3.600 V
Input Undervoltage Lockout V
IN
rising, 70mV hysteresis 1.32 1.35 1.38 V
OUT
Output Voltage Range 0.5 3.4 V
Load Regulation I
OUT
= 1mA to 1A 0.1 %/A
Line Regulation V
IN
= 1.425V to 3.6V, V
OUT
= 1.225V, I
OUT
= 1mA -0.15 0 +0.15 % / V
Dropout Voltage (V
IN
- V
OUT
)V
IN
= 1.425V, I
OUT
= 1A, V
FB
= 480mV 100 200 mV
Current Limit V
IN
= 3.6V, V
OUT
= 3V, V
FB
= 480mV 1.6 2 2.4 A
Output Shutdown Leakage V
IN
= 3.6V, V
OUT
= 0V, V
EN
= 0V 0.25 25 µA
FB
I
OUT
= 10mA, T
A
= +85°C 497 500 503
FB Threshold Accuracy
V
OUT
= 1.225V to 3V, V
IN
= V
OUT
+ 0.2V to 3.6V,
I
OUT
= 1mA to 1A
493 507
mV
FB Input Bias Current V
FB
= 0.5V, V
IN
= 3.6V 0.001 1 µA
GND
V
IN
= 3.6V, V
OUT
= 3V, I
OUT
= 100mA 320
GND Supply Current
Dropout, V
IN
= 3.6V, V
FB
= 480mV 340 600
µA
GND Shutdown Current V
IN
= 3.6V, EN = GND 0.25 25 µA
POK (MAX8517 ONLY)
FB high 540 550 560
POK Threshold
V
FB
moving out of regulation,
V
HYS
= 10mV, IN = 1.425V to 3.6V
FB low 440 450 460
mV
POK Output Voltage Low V
FB
= 0.4V or 0.6V, I
POK
= 1mA 25 200 mV
POK Output Current High V
POK
= 3.6V 0.001 1 µA
POK Fault Delay Time From FB to POK 25 50 100 µs
MAX8516/MAX8517/MAX8518
1.425V to 3.6V Input, 1A,
0.2V Dropout LDO Regulators
_______________________________________________________________________________________ 3
Note 1: Specifications to T
A
= -40°C are guaranteed by design, not production tested.
Note 2: Measurements at high current are pulse tested, such that the junction temperature is ambient temperature. Minimum supply
voltage for output accuracy must be at least 1.425V.
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1. V
IN
= +1.8V, V
OUT
= +1.5V, EN = IN, I
OUT
= 1mA, T
A
= -40°C to +85°C, unless otherwise noted.) (Note 1)
PARAMETER CONDITIONS MIN TYP MAX UNITS
POR (MAX8518 ONLY)
POR Reset Threshold V
FB
falling, V
HYS
= 10mV, V
IN
= 1.425V to 3.6V 440 450 460 mV
POR Output Voltage Low V
FB
= 0.4V or 0.6V, I
POR
= 1mA 25 200 mV
POR Output Current High V
POR
= 3.6V 0.001 1 µA
POR Rising Delay Time From FB to POR 105 150 210 ms
EN
EN rising 1.2
Enable Input Threshold V
IN
= 1.425V to 3.6V
EN falling 0.4
V
Enable Input Bias Current V
EN
= 0 or 3.6V -1 +1 µA
THERMAL SHUTDOWN
T
J
rising +165
Thermal-Shutdown Threshold Output on or off
T
J
falling +150
°C
OUTPUT TRANSIENT
Load Transient I
OUT
= 20mA to 1A to 20mA, t
RISE
= t
FALL
= 1µs 3 %
Line Transient δV
IN
= 0.5V, t
RISE
= t
FALL
= 5µs 3 %
Typical Operating Characteristics
(Circuit of Figure 1, V
IN
= +1.8V, V
OUT
= +1.5V, I
OUT
= 1A, C
OUT
= 4.7µF, C
IN
= 1µF, T
A
= +25°C.)
OUTPUT VOLTAGE
vs. INPUT VOLTAGE
MAX8516/17/18 toc01
INPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
3.02.41.81.20.6
1.35
1.40
1.45
1.50
1.55
1.60
1.30
03.6
T
A
= -40
°
C TO +85
°
C
OUTPUT VOLTAGE
vs. LOAD CURRENT
MAX8516/17/18 toc02
LOAD CURRENT (mA)
OUTPUT VOLTAGE (V)
800600400200
1.492
1.494
1.496
1.498
1.500
1.502
1.490
0 1000 1200
T
A
= +85
°
C
T
A
= +25
°
C
T
A
= -40
°
C
GROUND CURRENT
vs. INPUT VOLTAGE
MAX8516/17/18 toc03
INPUT VOLTAGE (V)
GROUND CURRENT (µA)
3.02.40.6 1.2 1.8
100
200
300
400
500
0
03.6
I
LOAD
= 1A
I
LOAD
= 0.5A
I
LOAD
= 0A
P1-P3P4-P6P7-P9P10-P10

MAX8518EUB+T

Mfr. #:
Buy MAX8518EUB+T
Manufacturer:
Maxim Integrated
Description:
LDO Voltage Regulators 1.425V to 3.6V Input 1A 0.2V Dropout LDO
Lifecycle:
New from this manufacturer.
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