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MAX8887EZKXYT Low-Dropout, 300mA Linear Regulators in SOT23
Prototype PCB
Part No.:   MAX8887EZKXYT
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Description:   Low-Dropout, 300mA Linear Regulators in SOT23
File Size :   254 K    
Page : 9 Pages
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19-1859; Rev 3; 11/06
Low-Dropout, 300mA Linear Regulators in SOT23
General Description
The MAX8887/MAX8888 low-dropout linear regulators
operate from a 2.5V to 5.5V input and deliver up to
300mA continuous (500mA pulsed) current. The
MAX8887 is optimized for low-noise operation, while the
MAX8888 includes an open-drain POK ouput flag. Both
regulators feature exceptionally low 100mV dropout at
200mA. These devices are available in a variety of pre-
set output voltages in the 1.5V to 3.3V range.
An internal PMOS pass transistor allows the low 55µA
supply current to remain independent of load, making
these devices ideal for portable battery-powered equip-
ment such as personal digital assistants (PDAs), cellu-
lar phones, cordless phones, and notebook computers.
Other features include a micropower shutdown mode,
short-circuit protection, thermal shutdown protection,
and an active-low open-drain power-OK (POK) output
that indicates when the output is out of regulation. The
MAX8887/MAX8888 are available in a thin 5-pin SOT23
package that is only 1mm high.
Features
Guaranteed 300mA Output Current (500mA for
Pulsed Loads)
Low 100mV Dropout at 200mA Load
POK Output (MAX8888)
42µV
RMS
Output Noise (MAX8887)
Preset Output Voltages (1.5V, 1.8V, 2.85V, and
3.3V)
55µA No-Load Supply Current
Thermal Overload and Short-Circuit Protection
Foldback Output Current-Limit Protection
60dB PSRR at 1kHz
0.1µA Shutdown Current
Thin 5-Pin SOT23 Package, 1mm High
MAX8887/MAX8888
Ordering Information
PART
MAX8887
EZK15+T
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
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
5 SOT23-5
5 SOT23-5
5 SOT23-5
5 SOT23-5
5 SOT23-5
5 SOT23-5
5 SOT23-5
5 SOT23-5
5 SOT23-5
5 SOT23-5
TOP
MARK
ADQD
ADPX
ADPY
ADPZ
ADQE
ADQA
ADQB
ADQC
________________________Applications
Notebook Computers
Wireless Handsets
PDAs and Palmtop Computers
Digital Cameras
PCMCIA Cards
Hand-Held Instruments
MAX8887EZK18+T
MAX8887EZK29+T
MAX8887EZK33+T
MAX8887EZKxy+T*
MAX8888
EZK15+T
MAX8888EZK18+T
MAX8888EZK29+T
MAX8888EZK33+T
MAX8888EZKxy+T*
*Other
versions (xy) between +1.5 and +3.3V are available in
100mV increments. Contact factory for other versions. Minimum
order quantity is 25,000 units.
Typical Operating Circuit
INPUT
2.5V TO 5.5V
IN
C
IN
2.2μF
OUT
V
OUT
300mA
C
OUT
2.2μF
POK
ON
SHDN
OFF
GND
(BP)
C
BP
0.01μF
+Denotes
lead-free availability.
Pin Configurations
TOP VIEW
IN
1
5
OUT
IN
1
5
OUT
MAX8887
MAX8888
GND
2
MAX8887
GND
2
MAX8888
SHDN
3
( ) ARE FOR MAX8887 ONLY.
4
BP
SHDN
3
4
POK
________________________________________________________________
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.
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