IP1P125
IP3P125
TOP VIEW
INV. INPUT
1
N. I. INPUT
2
SYNC
3
OSC. OUTPUT
4
C
T
5
R
T
6
DISCHARGE
7
SOFT START
8
16
15
14
V
REF
V
IN
OUTPUT B
REGULATING PULSE
WIDTH MODULATORS
FEATURES
• Pin Compatible with 1525A Series
• Low Output Crossover Current
• Fixed 100ns Deadtime
13
V
C
12
11
10
9
GROUND
OUTPUT A
SHUTDOWN
COMPENSATION
• 100Hz to 500kHz Operating Frequencyrange
• 5.1 volt ± 1% Reference
• Oscillator Sync. Terminal
• Soft Start
• Undervoltage Lockout
• Latching PWM
J Package – 16 Pin Ceramic DIP
N Package – 16 Pin Plastic DIP
D Package – 16 Pin Plastic (300) SOIC
Order Information
Part
Number
IP1P125J
IP3P125D
IP3P125J
IP3P125N
J–Pack
16 Pin
✔
✔
✔
N–Pack
16 Pin
D–16
16 Pin
✔
Temp.
Range
-55 to +125°C
0 to + 70°C
0 to +70°C
0 to +70°C
Note:
To order, add the package identifier to the part number.
eg.
IP1P125J
ABSOLUTE MAXIMUM RATINGS
(T
case
= 25°C unless otherwise stated)
+V
IN
Input Voltage
Collector Voltage
Logic Inputs
Analogue Inputs
Output Current, Source or Sink
Reference Output Load Current
Oscillator Charging Current
P
D
P
D
T
J
T
STG
T
L
Power Dissipation
T
A
= 25°C
Derate @ T
A
> 50°C
Power Dissipation
T
C
= 25°C
Derate @ T
C
> 25°C
Operating Junction Temperature
Storage Temperature Range
Lead Temperature
Telephone +44(0)1455 556565.
E-mail:
sales@semelab.co.uk
+40V
+40V
–0.3 to +5.5V
–0.3 to +V
IN
500mA
Internally Limited
5mA
1000mW
10mW/°C
2000W
16mW/°C
–55 to +150°C
–65 to +150°C
(soldering, 10 seconds)
Fax +44(0)1455 552612.
Website:
http://www.semelab.co.uk
+300°C
Prelim.5/00
Semelab plc.
IP1P125
IP3P125
DESCRIPTION
The IP1P125 series of pulse width modulator intergrated circuits offers high speed performance optimized for
MOSFET drive. Pin compatible with SG1525A, the IP1P125 features low crossover current through the output transistors
as well as 95% total usable output pulse width up to 500KHz. High speed latched shutdown is included as well as a pre-
cision 5.1 volt rference, error amp, oscillator, latched PWM coparator, totem-pole output drivers, soft-start and undervolt-
age lockout.
RECOMMENDED OPERATING CONDITIONS
V
IN
Input Voltage
Collector Voltage
Sink/Source Load Current (Steady State)
Sink/Source Load Current (Peak)
Reference Load Current
Oscillator Frequency Range
R
T
C
T
Oscillator Timing Resistor
Oscillator Timing Capacitor
Deadtime Resistor Range
Operating Ambient Temperature Range
IP1525A / IP1527A
IP2525A / IP3527A
IP3525A / IP3527A
+8 to +
+4.5 to +35V
0 to 100mA
0 to 400mA
0 to 20mA
100Hz to 500kHz
1.5k
W
to 200k
W
470pF to 0.1
m
F
0 to 500
W
–55 to +125°C
–25 to + 85°C
0 to +70°C
Semelab plc.
Telephone +44(0)1455 556565.
E-mail:
sales@semelab.co.uk
Fax +44(0)1455 552612.
Website:
http://www.semelab.co.uk
Prelim.5/00
IP1P125
IP3P125
ELECTRICAL CHARACTERISTICS
(T
J
= Over Operating Temperature Range unless otherwise stated)
IP1P125
Parameter
Output Voltage
Line Regulation
Load Regulation
IP3P125
Max.
5.15
10
15
50
5.2
4.95
25
70
40
1
Test Conditions
Min.
5.05
Typ.
5.10
1
5
15
Min.
5.0
Typ.
5.1
1
5
15
Max.
5.2
15
25
20
5.25
120
200
50
Units
V
mV
mV
V
mA
m
REFERENCE SECTION
T
J
= 25°C
V
IN
= 8 to 35V
I
L
= 0 to 20mA
V
IN
= 8 to 35V,
V
REF
= 0
£
Temperature Stability
note5
Over Operating Range
Total Output
Short Circuit Current
I
L
= 0 to 20mA
5.0
25
10kHz
70
40
1
120
200
10
Output Noise Voltagenote5 10 Hz
£
f
Long Term Stability
note5
Vrms
mV
kHr
OSCILLATOR SECTION
2
Initial Accuracy
Voltage Stability
V
IN
= 8 to 35V
R
T
= 200k
W
I
RT
= 2mA
Output, PIN 4, C
T
= 0.1
m
F
Output, PIN 4, C
T
= 0.1
m
F
Sync Voltage = 3.5V
C
T
= 0.1
m
F
1.7
3.0
0.3
1.2
37.6
40
0.1
1
80
900
2.0
4.0
0.5
2.0
1.0
1.0
2.8
2.5
2.2
1.7
3.0
0.3
1.2
42.4
0.5
4
120
37.6
40
0.1
1
80
900
2.0
4.0
0.5
2.0
1.0
1.0
2.8
2.5
2.2
42.4
2
6
120
Hz
kHz
mA
V
m
kHz
%
Temperature Stability
note5
Over Operating Range
Minimum Frequency
Maximum Frequency
Current Mirror
Clock Amplitude
Clock Width
Sync Threshold
Sync Input Current
R
T
= 2k
W
C
T
= 470pF R
D
= 0
W
s
V
mA
ERROR AMPLIFIER SECTION
3
Input Offset Voltage
Input Bias Current
Input Offset Current
DC Open Loop Gain
Gain Bandwidth Product
V
cm
= 1.5 to 5.2V
V
cm
= 1.5 to 2.5V
V
cm
= 1.5 to 5.2V
D
0.1
1
0.1
60
1
80
3.5
5
10
1
60
1
2
1
0.1
80
3.5
10
10
1
mV
m
A
V
0
= 1 to 3V ,R
L
³
10 M
W
dB
MHz
note5
Semelab plc.
Telephone +44(0)1455 556565.
E-mail:
sales@semelab.co.uk
Fax +44(0)1455 552612.
Website:
http://www.semelab.co.uk
Prelim.5/00
IP1P125
IP3P125
ELECTRICAL CHARACTERISTICS
(T
J
= Over Operating Temperature Range unless otherwise stated)
IP1P125
Parameter
Output Low Level
Output High Level
Common Mode Rejection
Supply Voltage Rejection
V
CM
= 1.5 to 5.2V
V
IN
= 8 to 35V
3.8
60
50
IP3P125
Max.
0.5
7.0
3.8
60
50
Test Conditions
Min.
Typ.
0.2
5.6
90
60
Min.
Typ.
0.2
5.6
90
60
Max.
0.5
7.0
Units
ERROR AMPLIFIER SECTION (cont.)
3
V
dB
PWM COMPARATOR
Minimum Duty Cycle
Maximum Duty Cycle
Input Threshold
Input Threshold
Input Bias Current
V
PIN1
– V
PIN2
³
150mV
V
PIN2
– V
PIN1
³
150mV
Zero Duty Cycle
Max. Duty Cycle
45
0.6
49
0.9
3.3
50
3.6
0
45
0.6
49
0.9
3.3
50
80
80
0.6
2.0
1.0
300
0.6
25
50
0.4
1.3
0.1
50
80
0.6
2.0
1.0
300
m
0
%
3.6
V
m
A
SHUTDOWN SECTION
Soft Start Current
Soft Start Low Level
Shutdown Threshold
Shutdown Input Current
Shutdown Delay
note5
V
SHUTDOWN
= 0V
V
SHUTDOWN
= 2V
To Outputs
V
SHUTDOWN
= 2.5V
PIN 10 to Output T
J
= 25°C
25
25
50
50
0.4
A
0.6
1.3
0.1
50
V
mA
ns
OUTPUT DRIVERS (each output)
4
Output Low Level
I
SINK
= 20mA
I
SINK
= 100mA
I
SOURCE
= 20mA
I
SOURCE
= 100mA
V
C
= 35V
C
L
= 1nF
C
L
= 1nF
C
L
= 1nF
T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
0.2
0.4
0.2
1.0
0.4
2.5
18
17
200
100
50
100
300
300
100
50
100
0.2
1.0
19
18
200
300
300
ns
0.4
2.5
V
Output High Level
Collector Leakage Current
Rise Time
Fall Time
Dead Time
18
17
19
18
V
V
NOTES
note5
These parameters, although guaranteed over the recommended conditions are not 100% tested in production.
Semelab plc.
Telephone +44(0)1455 556565.
E-mail:
sales@semelab.co.uk
Fax +44(0)1455 552612.
Website:
http://www.semelab.co.uk
Prelim.5/00
微控制器 MCU
