Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is believed
to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in its use.
Semelab encourages customers to verify that datasheets are current before placing orders.
Semelab plc.
Telephone +44(0)1455 556565.
E-mail:
sales@semelab.co.uk
Fax +44(0)1455 552612.
Website:
http://www.semelab.co.uk
Document Number 3694
Issue 1
IP1543 SERIES
IP1544 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%.
The IP1544 and IP3544 circuits contain all of the features of the IP1543 series and have the added flexibilty of the
completely uncommitted inputs to the O.V. and U.V. sensing comparators so that voltages less than 2.5V may be
monitored by dividing down the reference voltage
BLOCK DIAGRAM
V
IN
250
µA
9,11
7,9
U.V. INDICATE
U.V.
8,10
U.V. SENSE
*,8
U.V. DELAY
15,17
V
REF
16,18
For each terminal
the first number
refers to 1543
series; the second
to the 1544 series
V
IN
2.5 V REF.
14,16
250
µA
* On 1543 series
this function is
internally connect-
ed to V ref.
GND
INV. INPUT
O.V. SENSE
V
IN
10,12
13,15
5,5
1,1
*,7
6,6
O.V.
SCR TRIGGER
4,4
O.V. DELAY
C.L. INV.
11,13
C.L. OUTPUT
C.L.
O.V. INDICATE
C.L. NON–INV.
12,14
2,2
3,3
OFFSET / COMP
REMOTE
ACTIVATE
RESET
RECOMMENDED OPERATING CONDITIONS
V
IN
Input Supply Voltage
Input Voltage Range
Reference Load Current
Indicate Output Current
Operating Ambient Temperature Range
IP1543
IP3543
IP1544
IP3544
+4.5 to +40V
0 to V
IN
– 3
0 to 10mA
0 to 10mA
–55 to +125°C
0 to +70°C
Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is believed
to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in its use.
Semelab encourages customers to verify that datasheets are current before placing orders.
Semelab plc.
Telephone +44(0)1455 556565.
E-mail:
sales@semelab.co.uk
Fax +44(0)1455 552612.
Website:
http://www.semelab.co.uk
Document Number 3694
Issue 1
IP1543 SERIES
IP1544 SERIES
ELECTRICAL CHARACTERISTICS
(T
J
= Over Operating Temperature Range unless otherwise stated)
Parameter
Input Voltage Range
Supply Current
Test Conditions
V
IN
= 40V
IP1543 / IP1544
Min.
Typ. Max.
4.5
40
7
10
IP3543 / IP3544
Min.
Typ. Max.
4.5
40
7
10
Units
V
mA
REFERENCE SECTION
Output Voltage
Line Regulation
Load Regulation
Short Circuit Current
Temperature Stability
T
J
= 25°C
V
IN
= 4.5 to 30V
I
REF
= 0 to 10mA
V
REF
= 0
Over Operating Range
12
2.48
2.45
1
1
25
50
2.5
2.52
2.55
5
10
40
12
2.45
2.4
1
1
25
50
2.5
2.55
2.6
5
10
40
V
mV
mA
ppm/°C
SCR TRIGGER SECTION
Peak Output Current
Peak Output Voltage
Output Off Voltage
Remote Activate Current
Remote Activate Voltage
Reset Current
Reset Voltage
Output Current Rise Time
Prop. Delay from Pin 2
Prop. Delay from Pin 6
V
IN
= 5V
V
O
= 0
V
IN
= 15V
V
IN
= 40V
Pin 2 = Gnd
Pin 2 = Open
Pin 3 = Gnd
Pin 3 = Open
R
L
= 50Ω
C
D
= 0
V
PIN2
= 0.4V
V
PIN6
= 2.7V
T
J
= 25°C
T
J
= 25°C
2.45
2.4
T
J
= 25°C
Sense Input = 0V
25
–0.3
0.2
6
V
D
= 0
200
250
–1
0.5
8
300
200
Pin 2 = Gnd
Pin 2 = Gnd
T
J
= 25°C
I
O
= 100mA
R
G
= 0
100
12
200
13
0
–0.1
1.5
–0.1
1.5
400
300
500
0.1
–0.8
6
–0.8
6
400
100
12
200
13
0
–0.1
1.5
–0.1
1.5
400
300
500
0.1
–0.8
6
–0.8
6
400
mA
V
mA
V
mA
V
mA/µs
ns
ns
COMPARATOR SECTIONS
Input Threshold
(Input Voltage
T
J
= 25°C
Rising on Pin 6, Falling on Pin 7)
2.5
2.55
2.6
2.4
2.35
2.5
2.6
2.65
V
mV
Input Hysteresis
Input Bias Current
Delay Saturation
Delay High Level
Delay Charging Current
25
–0.3
0.2
6
250
–1
0.5
8
300
µA
V
µA
Semelab plc.
Telephone +44(0)1455 556565.
E-mail:
sales@semelab.co.uk
Fax +44(0)1455 552612.
Website:
http://www.semelab.co.uk
Document Number 3694
Issue 1
IP1543 SERIES
IP1544 SERIES
ELECTRICAL CHARACTERISTICS
(T
J
= Over Operating Temperature Range unless otherwise stated)
Parameter
Indicate Saturation
Indicate Leakage
Test Conditions
IP1543 / IP1544
Min.
Typ. Max.
0.2
0.01
V
PIN7
= 2.3V
T
J
= 25°C
V
PIN7
= 2.3V
T
J
= 25°C
0
400
0.5
1
IP3543 / IP3544
Min.
Typ. Max.
0.2
0.01
400
0.5
1
Units
V
µA
ns
COMPARATOR SECTIONS (cont.)
I
L
= –10mA
V
IND
= 40V
V
PIN6
= 2.7V
Propagation Display
C
D
= 0
V
PIN6
= 2.7V
C
D
= 1µF
Input Voltage Range
Input Bias Current
Input Offset Voltage
CMRR
AVOL
Output Saturation
Output Leakage
Small Signal Bandwidth
Propagation Delay
Pin 12 = Open
Pin 12 = Open
V
CM
= 0
V
CM
= 0
70
60
72
V
IN
= 15V
V
CM
= 0
10
10
ms
CURRENT LIMIT SECTION
V
IN
– 3
–0.3
0
100
70
80
0.2
0.01
T
J
= 25°C
T
J
= 25°C
5
200
0.5
1
–1
10
130
70
60
72
0
–0.3
0
100
70
80
0.2
0.01
5
200
0.5
1
V
IN
– 3
–1
15
130
V
µA
mV
10kΩ from Pin 12 to Gnd
V
CM
= 0 to 12V
Pin 12 = Open
I
L
= –10mA
V
IND
= 40V
A
V
= 0dB
V
overdrive
= 100mV
dB
V
µA
MHz
ns
NOTES
1. Test Conditions unless otherwise stated:
V
IN
= 10V
for IP1543 / IP1544
T
J
= –55 to +125°C
for IP3543 / IP354
T
J
= 0 to +70°C
Order Information
Part
Number
IP1543
IP3543
IP1544
IP3544
J–Pack
16 Pin
✔
✔
✔
✔
N–Pack
16 Pin
✔
✔
D–16
16 Pin
✔
✔
Temp.
Range
-55 to +125°C
0 to 70°C
-55 to +125°C
0 to +70°C
Note:
To order, add the package identifier to the part number.
eg.
IP1543J
IP3543D–16
Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is believed
to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in its use.
Semelab encourages customers to verify that datasheets are current before placing orders.
Semelab plc.
Telephone +44(0)1455 556565.
E-mail:
sales@semelab.co.uk
Fax +44(0)1455 552612.
Website:
http://www.semelab.co.uk
Document Number 3694
Issue 1
IP1543 SERIES
IP1544 SERIES
APPLICATIONS INFORMATION
Typical Application
POWER SUPPLY
R
SC
OUT OF TOLERANCE
INDICATORS
Current Limit V
TH
≈
1000
16
2.5V
REF.
14
13
10
15
R
4
7
9
4
R
1
TO VOLTAGE
CONTROL LOOP
U.V.
TO SYSTEM
CONTROL
SCR
“CROWBAR”
R
G
1
3
C
S
is determined by the current loop dynamics.
Peak Current to load I
P
≅
V
TH
+
V
O
R
SC
R
SC
R
2
R
2
+ R
3
R
5
+ R
6
R
2
R
5
6
SCR
TRIGGER
Low Output Voltage Limit V
O(low)
=
2.5 (R
4
+ R
5
+ R
6
)
High Output Voltage Limit V
O(high)
=
2.5 (R
4
+ R
5
+ R
6
)
R
6
C.L.
12
11
O.V.
2
5
8
LATCH
RESET
Voltage Sensing Delay T
D
= 10000 C
D
SCR trigger power limiting resistor R
G
>
V
IN
-5
0.2
R
1
C
S
R
3
R
6
C
D1
C
D2
Sensing Multiple Supply Voltages
BIAS SUPPLY
MAIN POSITIVE
SUPPLY
R
1
7
TO 339 COMPARATORS
16
IP1543
U.V.
R
2
2.5V
REF.
SCR
TRIGGER
1
TO SHUTDOWN
CIRCUIT
6
O.V.
R
3
GROUND
ADDITIONAL
POSITIVE
SUPPLY
NEGATIVE
SUPPLY
VOLTAGE
R
4
R
5
R
6
R
7
14
15
4
9
2
3
339 QUAD COMP.
MASTER POWER SUPPLY
CONDITION INDICATOR
Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is believed
to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in its use.
Semelab encourages customers to verify that datasheets are current before placing orders.
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