AMS421A 查看數據表（PDF） - Advanced Monolithic Systems Inc
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AMS421A Datasheet PDF : 7 Pages
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Advanced
Monolithic
Systems
FEATURES
• Trimmed 0.5% Tolerance
• Wide Operating Current Range 0.1µA to 10mA
• Low Reference Input Current 1.5nA
• Low Dynamic Output Impedance
• Low Output Noise
• Nominal Temperature Range to 125°C
• Temperature-Compensated: 50ppm/°C
• Low supply current: typ. 10µA
AMS421
0.5V SHUNT REGULATOR
RoHS compliant
APPLICATIONS
• Battery Powered Systems
• Switching Power Supplies
• Isolated Power Supplies
• Telecommunications
• Error Amplifiers
• Notebook/Personal Computer
• Monitors/ VCR/ TV
• Opto-isolator driver
GENERAL DESCRIPTION
The AMS421 is a four-terminal adjustable open collector shunt regulator with guaranteed temperature stability over the entire
range of operation. The output voltage can be set to any value between 0.5V (VREF) and 15V by adding two external resistors.
The AMS421 features 0.5% initial tolerance, low dynamic output impedance and operates over a wide current range. Due to
the sharp turn-on characteristics this device is an excellent replacement for Zener diodes in many applications.
AMS421 is available 5 pin SOT-23 packages.
ORDERING INFORMATION:
PIN CONNECTIONS
TOL.
±0.5%
±1.0%
±2.0%
Package
5 LEAD SOT-23
AMS421AM1
AMS421BM1
AMS421CM1
BLOCK DIAGRAM
VCC
1
Ref
+
4
-
0.5V
OPERATING
TEMP. RANGE
-40 to + 125°C
-40 to + 125°C
-40 to + 125°C
5 Co
5L SOT-23
(M1)
VCC 1
GND 2
N/C 3
5 COLL
4 REF
Top View
2
GND
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723
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