AMS431LAM1 AMS [Advanced Monolithic Systems Ltd], AMS431LAM1 Datasheet - Page 3

• Manufacturer Part Number: AMS431LAM1
• Description: 1.2V SHUNT REGULATOR
• Manufacturer: AMS [Advanced Monolithic Systems Ltd]

TYPICAL APPLICATIONS
1) Set the V
2) Choose the value of R as follows:
TEST CIRCUITS
Figure 1. Test Circuit for V
The maximum limit for R should be such that the cathode current, I
The minimum limit for R should b such that I
150mA. Both of the following conditions must be met:
R
R
V
min
min
I
IN
V
REF
OUT
OUT
V
REF
V
I
150mA
according to the following equation:
OUT(min)
V
IN(max)
V
IN(max)
GND
V
REF
IN
1
to
-
100mA
V
limit
R1
R2
OUT
instantane
I
Z
V
R2
V
R1
REF
I
to
REF
Z
limit
= V
Z
=V
R1
REF
Advanced Monolithic Systems http://www.ams-semitech.com
REF
ous
I
Z
under
turn
Z
-
does not exceed 100mA under all load conditions, and the instantaneous turn-on value for I
normal
on
I
Z
V
Figure 2. Test Circuit for V
OUT
operating
V
IN
R2
R1
conditions
Test circuit for I
Z
is greater than the minimum operating current (80 A) at V
I
V
REF
3
REF
REF
I
Z
REF
V
.
Z
vs I
Z
.
Figure 3. Test Circuit for Off-State Current
V
IN
AMS431L
IN(min)
.
Z
does not exceed
I
Z
OFF
V
Z