19-3190; Rev 1; 5/05
1.425V to 3.6V Input, 2A,
0.2V Dropout LDO Regulators
General Description
Features
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.
♦ 1.425V to 3.6V Input Voltage Range
♦ Guaranteed 200mV Dropout at 2A Output Current
♦
♦
0.6ꢀ Inꢁtꢁal Aꢂꢂuraꢂc
The output voltage can be set from 0.5V to (V - 0.2V)
IN
1.4ꢀ Output Aꢂꢂuraꢂc oꢃer
and is 1.4% accurate over load and line variations, from
0°C to +85°C.
Load/Lꢁne/Temperature (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.
♦ Compatꢁble wꢁth Ceramꢁꢂ Capaꢂꢁtors
♦ Fast Transꢁent Response
♦ 440µA Operatꢁng Supplc Current
♦ <50µA Shutdown Supplc Current
♦ Short-Cꢁrꢂuꢁt Proteꢂtꢁon
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.
♦ Thermal-Oꢃerload Proteꢂtꢁon
♦ Soft-Start Lꢁmꢁts Inrush Current
♦ 5mm x 6.4mm Footprꢁnt, 1.1mm Profꢁle
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.
Ordering Information
PART
TEMP RANGE
-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
PIN-PACKAGE
14 TSSOP
14 TSSOP
14 TSSOP
14 TSSOP
14 TSSOP
14 TSSOP
MAX8526EUD
MAX8526EUD+
MAX8527EUD
MAX8527EUD+
MAX8528EUD
MAX8528EUD+
The parts are packaged in a 14-pin TSSOP package,
which includes an exposed pad for optimal power
dissipation.
Applications
Servers
+Denotes lead-free packaging.
Networking
Storage
Typical Operating Circuit
Base Stations
Optical Modules
Post Regulators
Notebooks
PDAs
INPUT
OUTPUT
1.425V TO 3.6V
0.5V TO (V - 0.2V), 2A
IN
IN_
OUT_
2.2µF
MAX8526
MAX8527
MAX8528
10µF
ATE
POWER-ON RESET
POWER-OK
POR (MAX8528)
POK (MAX8527)
EN
FB
ON
GND
Pin Configurations appear at end of data sheet.
OFF
________________________________________________________________ Maxim Integrated Products
1
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.