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CM3016-48 PDF预览

CM3016-48

更新时间: 2024-09-14 21:54:35
品牌 Logo 应用领域
CALMIRCO 稳压器
页数 文件大小 规格书
10页 216K
描述
Micropower, 4.75V/500mA Low Noise CMOS LDO Regulator

CM3016-48 数据手册

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CM3016-48  
Micropower, 4.75V/500mA Low Noise CMOS LDO Regulator  
Features  
Product Description  
The CM3016-48 is a CMOS linear voltage regulator with  
low quiescent current, very low drop out voltage and better  
than 1% initial output voltage accuracy. The quiescent cur-  
Linear LDO regulator with 4.75V output  
500mA output current capability  
- 500mA peak in SOT-23 package  
500mV maximum dropout voltage at full load  
150mV maximum dropout at 150mA load  
Excellent line and load regulation  
Stable with low ESR output capacitor  
Ultra low noise with optional bypass capacitor  
Fast power-up with bypass capacitor  
"Zero" current in Shutdown mode  
Thermal Overload Protection  
rent is typically 150µA at light loads and only 165µA at  
500mA. This is 5% more efficient than equivalent Bi-CMOS  
devices that can waste up to 25mA at 500mA load. The  
CM3016-48 can maintain load regulation for peak currents  
up to 500mA, which is useful for supplying inrush currents  
during power-up and transient conditions. Continuous out-  
put current is limited by package type and board layout.  
A dedicated control input (EN, Active High) has been  
included for power-up sequencing flexibility. When this input  
is taken low, the regulator is disabled. In this state, the sup-  
ply current will drop to near zero. The device also features  
reverse current protection. This protects the device by  
blocking the pass transistors parasitic diode when the out-  
put voltage is forced higher than the input.  
Foldback Current Limiting Protection  
Reverse current protection  
Lead-free version available  
Applications  
Notebook computers  
Consumer and personal electronics  
Ideal for powering audio codecs  
For low noise performance and increased power supply rip-  
ple rejection a noise bypass capacitor can be connected to  
the BYP pin. Connecting this capacitor will not significantly  
delay the speed of power-up.  
The CM3016-48 is fully protected, offering both overload  
current limiting and high temperature thermal shutdown. To  
reduce board cost and layout size, the CM3016 was  
designed to be stable with or without an output capacitor.  
This includes tiny, low ESR ceramic capacitors.  
The CM3016-48 is housed in a 5-pin SOT23 package and  
is ideal for space critical applications. It is available with  
optional lead-free finishing.  
Typical Application Circuit  
Simplified Electrical Schematic  
Reverse Current  
Protection  
CM3016-48  
IN  
OUT  
Current  
Limit  
OUT  
IN  
OUT  
IN  
V
REF  
C
+
OUT  
+
EN  
EN  
BYP  
+
BYP  
C
AMP  
EN  
GND  
IN  
2.2µF  
+
-
Fast  
Power-Up  
C
BYP  
1µF  
Enable Control  
EN  
100nF  
Thermal Overload  
GND  
© 2004 California Micro Devices Corp. All rights reserved.  
V2.XX  
430 N. McCarthy Blvd., Milpitas, CA 95035-5112  
Tel: 408.263.3214  
Fax: 408.263.7846  
www.calmicro.com  
1
12/22/04  

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