MAX8527 MAXIM [Maxim Integrated Products], MAX8527 Datasheet

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MAX8527

Manufacturer Part Number
MAX8527
Description
1.425V to 3.6V Input, 2A, 0.2V Dropout LDO Regulators
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet

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The MAX8526/MAX8527/MAX8528 low-dropout linear
regulators operate from input voltages as low as 1.425V
and are able to deliver up to 2A of continuous output
current with a maximum dropout voltage of only 200mV.
The output voltage can be set from 0.5V to (V
and is 1.4% accurate over load and line variations, from
0°C to +85°C.
These regulators use small, 2.2µF ceramic input capaci-
tors and 10µF ceramic output capacitors to deliver 2A
output current. High bandwidth provides excellent tran-
sient response and limits the output voltage deviation to
45mV for a 20mA to 2A load step, with only a 10µF
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 MAX8526/MAX8527/MAX8528 feature
low 500µA typical 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 MAX8527 features a power-OK (POK) output that
transitions high when the regulator output is within
±10% of its nominal output voltage. The MAX8528 fea-
tures a 150ms power-on reset (POR) output.
The parts are packaged in a 14-pin TSSOP package,
which includes an exposed pad for optimal power
dissipation.
19-3190; Rev 2; 8/09
Pin Configurations appear at end of data sheet.
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.
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________________________________________________________________ Maxim Integrated Products
General Description
Applications
0.2V Dropout LDO Regulators
IN
- 0.2V)
1.425V to 3.6V Input, 2A,
o 1.425V to 3.6V Input Voltage Range
o Guaranteed 200mV Dropout at 2A Output Current
o ±0.6% Initial Accuracy
o ±1.4% Output Accuracy over
o Compatible with Ceramic Capacitors
o Fast Transient Response
o 440µA Operating Supply Current
o <50µA Shutdown Supply Current
o Short-Circuit Protection
o Thermal-Overload Protection
o Soft-Start Limits Inrush Current
o 5mm x 6.4mm Footprint, 1.1mm Profile
+ Denotes a lead(Pb)-free RoHS-compliant package.
/V Denotes an automotive qualified part.
MAX8526EUD
MAX8526EUD+
MAX8527EUD
MAX8527EUD+
MAX8527EUD/V+
MAX8528EUD
MAX8528EUD+
Load/Line/Temperature (0°C to +85°C)
OFF
PART
ON
POWER-ON RESET
POWER-OK
2.2µF
1.425V TO 3.6V
INPUT
Typical Operating Circuit
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
IN_
POR (MAX8528)
POK (MAX8527)
EN
TEMP RANGE
Ordering Information
MAX8526
MAX8527
MAX8528
OUT_
GND
FB
0.5V TO (V
PIN-PACKAGE
14 TSSOP
14 TSSOP
14 TSSOP
14 TSSOP
14 TSSOP
14 TSSOP
14 TSSOP
Features
OUTPUT
IN
- 0.2V), 2A
10µF
1

Related parts for MAX8527

MAX8527 Summary of contents

Page 1

... Soft-start reduces inrush current. Other features include a logic-controlled shutdown mode, short-circuit protection, and thermal-overload protection. The MAX8527 features a power-OK (POK) output that transitions high when the regulator output is within ±10% of its nominal output voltage. The MAX8528 fea- tures a 150ms power-on reset (POR) output. ...

Page 2

... Input, 2A, 0.2V Dropout LDO Regulators ABSOLUTE MAXIMUM RATINGS IN, EN, POK (MAX8527), POR (MAX8528 GND ........................................................-0.3V to +4.0V OUT to GND ..................................................-0.3V to (IN + 0.3V) Output Short-Circuit Duration.....................................Continuous Continuous Power Dissipation (T = +70° soldered to PC board ground) 14-Pin TSSOP (derate 20.8mW/°C above +70°C)..............1.7W 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 ...

Page 3

... Figure +1.8V +1.5V IN OUT PARAMETER GND V IN GND Supply Current Dropout, V GND Shutdown Current V IN POK (MAX8527 Only Power-OK Threshold V HYS POK Output Voltage Low V FB POK Output Current High V POK POK Fault Delay Time From FB to POK ...

Page 4

Input, 2A, 0.2V Dropout LDO Regulators (Typical values are +1.8V +1.5V OUT OUTPUT VOLTAGE vs. INPUT VOLTAGE 1. -40°C TO +85°C A 1.55 1.50 1.45 1.40 1.35 1.30 0 ...

Page 5

V = +1.8V +1.5V OUT PSRR vs. FREQUENCY (MAX8526 100mA LOAD -10 0.01 0 FREQUENCY (kHz) OUTPUT RIPPLE VOLTAGE 10µs/div ...

Page 6

... Regulator Output. Bypass with a 10µF ceramic capacitor to GND (a smaller OUT capacitor can be used if maximum load is less than 2A, i.e (1µF/200mA). Power-OK Output (MAX8527 Only). Open-drain output. Connect to a positive POK supply with a pullup resistor. If not used, leave pin unconnected. See the Detailed Description for more details. ...

Page 7

... EN to IN. During shut- down, an internal 10kΩ resistor pulls down the output. Power-OK (POK, MAX8527 Only) The MAX8527 features a power-OK output to indicate the status of the output. POK remains high when the regulator output is within ±10% of its nominal output voltage ...

Page 8

... Applications Information Capacitor Selection and Regulator Stability Capacitors are required at the MAX8526/MAX8527/ MAX8528 inputs and outputs for stable operation over the full temperature range and with load currents up to 2A. Connect a 2.2µF capacitor between IN and ground and a 10µF capacitor with low equivalent-series-resis- ...

Page 9

... TSSOP Chip Information TRANSISTOR COUNT: 2977 PROCESS: BiCMOS _______________________________________________________________________________________ 1.425V to 3.6V Input, 2A, 0.2V Dropout LDO Regulators T. OUT OUT MAX8527 OUT OUT POK T. GND TSSOP For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only ...

Page 10

... Ordering Information and the Pin Description. 2 8/09 Added automotive version of the MAX8527. 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. ...

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