AP432A ANACHIP [Anachip Corp], AP432A Datasheet - Page 7

• Manufacturer Part Number: AP432A
• Description: Adjustable Precision Shunt Regulator
• Manufacturer: ANACHIP [Anachip Corp]

Adjustable Precision Shunt Regulator
Anachip Corp.
www.anachip.com.tw
Application Examples
V
Fig.7 Constant-Current Sink
IN
V
IN
LED on when Low Limit ＜ V
Low Limit ≈ V
High Limit ≈ V
R1A
R2A
Fig.4 Voltage Monitor
I
OUT
= V
REF
REF
REF
(1+R1B/R2B)
(1+R1A/R2A)
/ R
R1B
S
R2B
I
OUT
R
IN
S
＜ High Limit
V
IN
V
R1A
R2A
Fig.10 Over-Voltage / Under-Voltage Protection Circuit
IN
Fig.8 Higher-Current Shunt Regulator
High Limit
Low Limit
R1
R2
V
Delay = RC x ln(
V
R1B
OFF
OUT
IN
Fig.5 Delay Timer
= (1 + R1/R2) ×V
V
V
REF
REF
R2B
ON
R
(1 + R1B/R2B) +V
(1 + R1A/R2A)
7/16
+
V
IN
REF
+
V
-V
IN
REF
V
BE
OUT
)
V
Fig.6 Current Limiter or Current Source
V
Low Limint
IN
V
BE
IN
Output ON when
PUSE
AP432/AP432A
＜
R1
R2
V
L
IN
I
IMIT
OUT
Fig.9 Crow Bar
＜
High Limit
= V
(1 + R1/R2) ×V
REF
/ R
CL
Rev.1.0 May.7, 2004
R
CL
REF
I
OUT
V
OUT