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MAX6472TA33BD1

更新时间： 2024-11-16 23:50:51
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美信 - MAXIM 稳压器微处理器复位电路
页数 文件大小 规格书
20页 563K
描述
300mA LDO Linear Regulators with Internal Microprocessor Reset Circuit

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MAX6472TA33BD1 技术参数

是否无铅： 含铅是否Rohs认证： 不符合
生命周期：Active零件包装代码：SON
包装说明：3 X 3 MM, 0.80 MM HEIGHT, MO-229WEEC, TDFN-8针数：8
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.34
Base Number Matches：1

MAX6472TA33BD1 数据手册

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19-2532; Rev 1; 10/02  
300mA LDO Linear Regulators with  
Internal Microprocessor Reset Circuit  
General Description  
Features  
o 3 ✕ 3 UCSP, 6-Pin SOT23, and 8-Pin QFN Packages  
o Preset +1.5V to +3.3V Output (100mV Increments)  
o SET Pin for Adjustable Output Voltage  
The MAX6469–MAX6484 are low-dropout linear regula-  
tors with a fully integrated microprocessor reset circuit.  
Each is available with preset output voltages from +1.5V  
to +3.3V in 100mV increments and delivers up to 300mA  
of load current. These devices consume only 82µA of  
supply current. The low supply current, low dropout volt-  
age, and integrated reset functionality make these  
devices ideal for battery-powered portable equipment.  
o 75µV  
LDO Output Voltage Noise  
RMS  
(MAX6477–MAX6484)  
o
2.0ꢀ Accuracꢁ Oꢂer Temperature  
o Guaranteed 300mA Output Current  
The MAX6469–MAX6484 include a reset output that indi-  
cates when the regulator output drops below standard  
microprocessor supply tolerances (-7.5% or -12.5% of  
nominal output voltage). This eliminates the need for an  
external microprocessor supervisor, while ensuring that  
supply voltages and clock oscillators have stabilized  
before processor activity is enabled. Push-pull and open-  
drain active-low reset outputs are available, with reset  
timeout periods of 2.5ms, 20ms, 150ms, or 1200ms (min).  
o Low Dropout Voltage  
55mV at 150mA  
114mV at 300mA  
o 82µA Supplꢁ Current, 0.1µA Shutdown Current  
o Input Reꢂerse Current, Thermal and Short-Circuit  
Protection  
o Microprocessor Reset with Four Timeout Options  
o Push-Pull or Open-Drain RESET  
o Manual Reset Input  
The MAX6469/MAX6470/MAX6473–MAX6478/MAX6481–  
MAX6484 also have a shutdown feature that reduces the  
supply current to 0.1µA (typ). The MAX6471–MAX6474/  
MAX6479–MAX6482 offer a manual reset input to assert a  
microprocessor reset while the regulator output is within  
specification. The MAX6475/MAX6476/MAX6483/  
MAX6484 feature a remote feedback sense pin for use  
with an external NPN transistor for higher-current applica-  
tions. The MAX6469–MAX6476 are available in 6-pin  
SOT23 and 8-pin thin QFN packages. The MAX6477–  
MAX6484 are available in a 3 × 3 chip-scale package  
(UCSP™). All devices are specified for operation from  
-40°C to +85°C.  
o Remote Feedback Sense  
Ordering Information  
PIN-  
PACKAGE  
PART  
TEMP RANGE  
MAX6469UT_ _ _D_-T  
MAX6469TA_ _ _D_*  
MAX6470UT_ _ _D_-T  
MAX6470TA_ _ _D_*  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
6 SOT23-6  
8 Thin QFN  
6 SOT23-6  
8 Thin QFN  
*Future product—contact factory for availability.  
Applications  
Hand-Held Instruments (PDAs, Palmtops)  
PCMCIA Cards/USB Devices  
Cellular/Cordless Telephones  
CD/DVD Drives  
Note: The first “_ _ are placeholders for the output voltage levels  
”
of the devices. Desired output voltages are set by the suffix found  
in the Output Voltage Suffix Guide (Table 1). The third “_” is a  
placeholder for the reset threshold accuracy. Desired reset  
threshold accuracy is set by the suffix found in the Reset  
Threshold Accuracy Guide (Table 2). The “_” following the D is a  
placeholder for the reset timeout delay time. Desired reset timeout  
delay time is set by the suffix found in the Reset Timeout Delay  
Guide (Table 3). For example, the MAX6481BL30BD4-T has a  
3.0V output voltage, 12.5% reset threshold tolerance, and a  
1200ms (min) reset timeout delay. Sample stock is generally avail-  
able on standard versions only (Table 4). Standard versions  
require a minimum order increment of 2.5k units. Nonstandard  
versions must be ordered in 10k-unit increments. Contact factory  
for availability.  
Notebook Computers  
Digital Cameras  
Bluetooth Modules/Wireless LAN  
UCSP is a trademark of Maxim Integrated Products, Inc.  
Ordering Information continued at end of data sheet.  
Pin Configurations appear at end of data sheet.  
Typical Operating Circuits appear at end of data sheet.  
________________________________________________________________ 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.  
1234567...20

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