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GM1431BST89T Datasheet

  • GM1431BST89T

  • ADJUSTABLE SHUNT REGULATOR

  • 14頁(yè)

  • GAMMA

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MICROELECTRONICS
A
A
Power Management
GM1431
ADJUSTABLE SHUNT REGULATOR
Description
The GM1431 is a three terminal adjustable shunt regulator
with thermal stability guaranteed over temperature. Output
voltage can be adjusted to any value between 2.5V (V
ref
)
and 36V by using two external resistors. The GM1431 has
a typical dynamic output impedance of 0.2W. Active output
circuitry provides a very unique turn on characteristic, mak-
ing the GM1431
an excellent tum on replacement for
zener diodes in many applications such as onboard regula-
tion and adjustable power supplies. The GM1431 is an
ideal voltage reference for 3.0 to 3.3V switching power sup-
plies.
The GM1431 shunt regulator is available with 3 voltage tol-
erances, 0.5%, 1.0% and 2.0% over T
A
= 0擄C to + 70擄C,
and four package options (SOT-23, TO-92, SOT-89 and
SOP-8). Whatever your application is, the GM1431 offers
the optimum combination of performance, reliability, and
economy.
Features
Sink Current Capability 1 mA to 100mA
Low dynamic output impedance, 0.2W typ.
0.5%, 1% or 2% reference voltage tolerance
Alternate for TL431, TL431, LM431 & AS431
Temperature range 0擄C to+ 70 擄C
Available in SOT-23, TO-92, SOT-89 and
SOP- 8 packages
Application
Switching power supplies
Linear regulators
Adjustable supplies
Battery-operated computers
Computer disk drives
Instrumentation
LOGIC SYMBOL
BLOCK DIAGRAM (POSITIVE LOGIC)
CATHODE
REFERENCE
REFERENCE
+
_
ANODE
CATHODE
V
ref
ANODE
www.gammamicro.com
GM1431
V0.11
1

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