Analog Microelectronics, Inc.
1
AME385-1.2
Micropower Voltage Reference Diode
n General Description
The AME385-1.2 is a micropower 2-terminal band-gap
voltage regulator diode. It operates over a 15µA to 20mA
current range. Each circuit is trimmed at wafer sort to
provide a ±0.2% and ±0.5% initial tolerance. The de-
sign of the AME385-1.2 allows for a large range of load
capacitances and operating currents. The low start-up
current makes these part ideal for battery applications.
Analog Microelectronics offers this part in a TO-92 and
SO-8 packages as well as the space saving SOT-23.
n Key Features
l Small packages: SOT-23, TO-92, SO-8
l Tolerates capacitive loads
l Fixed reverse breakdown voltage of 1.235V
l Tight voltage tolerance ---------- ±0.20%, ±0.5%
l Wide operating current ---------- 15µA to 20mA
l Wide temperature range -------- -40
o
C to +85
o
C
l Low temperature coefficient --- 100ppm/
o
C (max)
l Excellent transient response
n Typical Application
n Applications
l Portable electronics
l Power supplies
l Computer peripherals
l Data acquisition systems
l Battery chargers
l Consumer electronics
n Functional Block Diagram
GND
VR
Bandgap
Cell
Feedback
Current
Shunt
VS


1000pF
Value optional
I
RS =
VR = 1.235V
VR
VS - VR
RS
I