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MAX8888

更新时间： 2024-10-02 23:52:03
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美信 - MAXIM 稳压器
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8页 397K
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Low-Dropout.300mA Linear Regulators in SOT23

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MAX8888 数据手册

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19-1859; Rev 1; 12/01  
Low-Dropout, 300mA Linear Regulators in SOT23  
General Description  
Features  
o Guaranteed 300mA Output Current (500mA for  
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.  
Pulsed Loads)  
o Low 100mV Dropout at 200mA Load  
o POK Output (MAX8888)  
o 42µV  
Output Noise (MAX8887)  
RMS  
o Preset Output Voltages (1.5V, 1.8V, 2.85V, and  
3.3V)  
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.  
o 55µA No-Load Supply Current  
o Thermal Overload and Short-Circuit Protection  
o Foldback Output Current-Limit Protection  
o 60dB PSRR at 1kHz  
o 0.1µA Shutdown Current  
o Thin 5-Pin SOT23 Package, 1mm High  
Ordering Information  
TEMP  
RANGE  
PIN-  
PACKAGE  
TOP  
MARK  
PART  
MAX8887EZK15-T -40°C to +85°C 5 SOT23-5  
MAX8887EZK18-T -40°C to +85°C 5 SOT23-5  
MAX8887EZK29-T -40°C to +85°C 5 SOT23-5  
MAX8887EZK33-T -40°C to +85°C 5 SOT23-5  
MAX8887EZKxy-T* -40°C to +85°C 5 SOT23-5  
MAX8888EZK15-T -40°C to +85°C 5 SOT23-5  
MAX8888EZK18-T -40°C to +85°C 5 SOT23-5  
MAX8888EZK29-T -40°C to +85°C 5 SOT23-5  
MAX8888EZK33-T -40°C to +85°C 5 SOT23-5  
MAX8888EZKxy-T* -40°C to +85°C 5 SOT23-5  
ADQD  
ADPX  
ADPY  
ADPZ  
—
________________________Applications  
Notebook Computers  
Wireless Handsets  
PDAs and Palmtop Computers  
Digital Cameras  
ADQE  
ADQA  
ADQB  
ADQC  
—
PCMCIA Cards  
Hand-Held Instruments  
*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  
Pin Configurations  
V
OUT  
300mA  
INPUT  
2.5V TO 5.5V  
IN  
OUT  
TOP VIEW  
C
C
OUT  
IN  
2.2µF  
2.2µF  
MAX8887  
MAX8888  
IN  
GND  
1
2
3
5
4
OUT  
IN  
GND  
1
2
3
5
OUT  
POK  
(BP)  
ON  
MAX8887  
MAX8888  
SHDN  
OFF  
C
GND  
BP  
0.01µF  
SHDN  
BP  
SHDN  
4
POK  
( ) ARE FOR MAX8887 ONLY.  
________________________________________________________________ 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.  
12345678

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