IP1543 データシートの表示（PDF） - Semelab - > TT Electronics plc
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IP1543 Datasheet PDF : 7 Pages
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SEME
LAB
IP1543 SERIES
DESCRIPTION
The IP1543 and IP3543 power supply supervisory circuits contain all the functions necessary to monitor and control the
output of a sophisticated power supply system. Included on the chip are over-voltage (O.V.) sensing with externally
programmable delay used to trigger an external SCR “Crowbar”, under-voltage (U.V.) sensing with externally
programmable delay used to sense either the power supply output or the line input voltage, a third op-amp/comparator
with provision for external compensation and/or offset programming used for either current limiting or as an additional
voltage monitor, and a voltage reference trimmed to ±1%.
BLOCK DIAGRAM
7
U.V. SENSE
U.V.
15
VREF
16
VIN
VIN
250 µA
8
U.V. DELAY
14
GND
2.5 V REF.
6
O.V. SENSE
VIN
10
C.L. INV.
11
C.L.
C.L. NON–INV.
250 µA
O.V.
5
O.V. DELAY
13
C.L. OUTPUT
12
OFFSET / COMP
2
3
REMOTE RESET
ACTIVATE
9
U.V. INDICATE
1
SCR TRIGGER
4
O.V. INDICATE
RECOMMENDED OPERATING CONDITIONS
VIN
Input Supply Voltage
Input Voltage Range
Reference Load Current
Indicate Output Current
Operating Ambient Temperature Range
IP1543
IP3543
Semelab plc. Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
+4.5 to +40V
0 to VIN – 3
0 to 10mA
0 to 10mA
–55 to +125°C
0 to +70°C
Prelim. 1/96
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