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IP1P125 IP3P125
TOP VIEW
INV. INPUT 1 N. I. INPUT 2 SYNC 3 OSC. OUTPUT 4 CT 5 RT 6 DISCHARGE 7 SOFT START 8
16 15 14 13 12 11 10 9
VREF
VIN OUTPUT B
REGULATING PULSE WIDTH MODULATORS
FEATURES
* Pin Compatible with 1525A Series * Low Output Crossover Current * Fixed 100ns Deadtime
VC 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 +125C 0 to + 70C 0 to +70C 0 to +70C Note: To order, add the package identifier to the part number. eg. IP1P125J
ABSOLUTE MAXIMUM RATINGS (Tcase = 25C unless otherwise stated)
+VIN Input Voltage Collector Voltage Logic Inputs Analogue Inputs Output Current, Source or Sink Reference Output Load Current Oscillator Charging Current PD PD TJ TSTG TL Power Dissipation TA = 25C Derate @ TA > 50C Power Dissipation TC = 25C Derate @ TC > 25C 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 +VIN 500mA Internally Limited 5mA 1000mW 10mW/C 2000W 16mW/C -55 to +150C -65 to +150C (soldering, 10 seconds)
Fax +44(0)1455 552612. Website: http://www.semelab.co.uk
+300C
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 precision 5.1 volt rference, error amp, oscillator, latched PWM coparator, totem-pole output drivers, soft-start and undervoltage lockout.
RECOMMENDED OPERATING CONDITIONS
VIN Input Voltage Collector Voltage Sink/Source Load Current (Steady State) Sink/Source Load Current (Peak) Reference Load Current Oscillator Frequency Range RT CT 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 1.5kW to 200kW 470pF to 0.1mF 0 to 500W -55 to +125C -25 to + 85C 0 to +70C
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 (TJ = 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
mVrms
REFERENCE SECTION
TJ = 25C VIN = 8 to 35V IL = 0 to 20mA VIN = 8 to 35V, VREF = 0
Temperature Stability note5 Over Operating Range Total Output Short Circuit Current IL = 0 to 20mA 5.0 25 10kHz
70 40 1
120 200 10
Output Noise Voltagenote5 10 Hz f Long Term Stability note5
mV kHr
OSCILLATOR SECTION
Initial Accuracy Voltage Stability VIN = 8 to 35V RT = 200kW IRT = 2mA Output, PIN 4, CT = 0.1mF Output, PIN 4, CT = 0.1mF Sync Voltage = 3.5V
2
37.6
40 0.1 1 80 900
42.4 0.5 4 120
37.6
40 0.1 1 80 900
42.4 2 6 120
kHz %
Temperature Stability note5 Over Operating Range Minimum Frequency Maximum Frequency Current Mirror Clock Amplitude Clock Width Sync Threshold Sync Input Current CT = 0.1mF 1.7 3.0 0.3 1.2
Hz kHz
RT = 2kW CT = 470pF RD = 0W
2.0 4.0 0.5 2.0 1.0
2.2
1.7 3.0
2.0 4.0 0.5 2.0 1.0
2.2
mA V
1.0 2.8 2.5
0.3 1.2
1.0 2.8 2.5
ms
V mA
ERROR AMPLIFIER SECTION
Input Offset Voltage Input Bias Current Input Offset Current DC Open Loop Gain Gain Bandwidth Product Vcm = 1.5 to 5.2V Vcm = 1.5 to 2.5V Vcm = 1.5 to 5.2V
D
3
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
mA
V0 = 1 to 3V ,RL 10 MW
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 (TJ = Over Operating Temperature Range unless otherwise stated)
IP1P125 Parameter
Output Low Level Output High Level Common Mode Rejection Supply Voltage Rejection VCM = 1.5 to 5.2V VIN = 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 VPIN1 - VPIN2 150mV VPIN2 - VPIN1 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
mA
0
%
3.6
V
mA
SHUTDOWN SECTION
Soft Start Current Soft Start Low Level Shutdown Threshold Shutdown Input Current Shutdown Delay note5 VSHUTDOWN = 0V VSHUTDOWN = 2V To Outputs VSHUTDOWN = 2.5V PIN 10 to Output TJ = 25C
25 25
50 50 0.4
0.6
1.3 0.1 50
V mA ns
OUTPUT DRIVERS (each output)
Output Low Level ISINK = 20mA ISINK = 100mA ISOURCE = 20mA ISOURCE = 100mA VC = 35V CL = 1nF CL = 1nF CL = 1nF TJ = 25C TJ = 25C TJ = 25C
4
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

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