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Part: IP2524B
Category:
RF & Microwaves
-> Modulators
Description: Regulating Pulse Width Modulators
Company: Semelab Plc
Datasheet: Download IP2524B datasheet File size : 507 kB
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Datasheet text preview:
LAB
TOP VIEW
INV. INPUT 1 N. I. INPUT 2 OSC. OUTPUT 3 +C.L. SENSE 4 C.L. SENSE 5 RT 6 CT 7 GROUND 8
16 15 14 13 12 11 10 9
SEME
IP1524 SERIES
VREF VIN EB CB CA EA SHUTDOWN COMPENSATION
REGULATING PULSE WIDTH MODULATORS
FEATURES
· · · · · Guaranteed ±2% reference voltage tolerance Guaranteed ±6% oscillator tolerance Fully specified temperature performance Guaranteed 10mV/1000 hours long term stability Interchangeable with SG1524 series
J Package 16 Pin Ceramic DIP N Package 16 Pin Plastic DIP D Package 16 Pin Plastic (150) SOIC
Order Information
Part Number IP1524 IP2524 IP3524 JPack 16 Pin NPack 16 Pin D16 16 Pin Temp. Range -55 to +125°C -25 to +85°C 0 to +70°C Note: To order, add the package identifier to the part number. eg. IP1524J IP3524D16
ABSOLUTE MAXIMUM RATINGS (Tcase = 25°C unless otherwise stated)
+VIN Input Voltage Collector Voltage Output Current Reference Load Current Oscillator Charging Current Shut Down Pin Voltage Current Limit Sense Common Mode Range PD PD TJ TSTG TL Power Dissipation Power Dissipation TA = 25°C Derate @ TA > 50°C TC = 25°C Derate @ TC > 25°C (each transistor) +40V +40V 100mA Internally Limited 5mA +5.5V 1.0 to +1.0V 1W 10mW/°C 2W 16mW/°C See Ordering Information 65 to +150°C (soldering, 10 seconds) +300°C
Prelim. 3/95
Operating Junction Temperature Storage Temperature Range Lead Temperature
Semelab plc.
Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
LAB
DESCRIPTION
The IP1524 series of PWM switching regulator control circuits contains all the functions required to implement singleended or push-pull switching regulators. Included are voltage reference, error amplifer, oscillator, PWM comparator, output drivers, current limiting and shutdown circuitry. Although functionally indentical to the SG1524 series, SEMELAB has incorporated several improvements to the IP1524 allowing tighter and more complete specification of electrical performance.
SEME
IP1524 SERIES
BLOCK DIAGRAM
16
VIN
15
REFERENCE REGULATOR
+5V TO ALL INTERNAL CIRCUITRY OSCILLATOR OUTPUT
3
12
RT CT
6
CA
NOR FLIP FLOP
11
7
OSCILLATOR
EA CB
13
+5V COMPARATOR NOR INV. INPUT N.I. INPUT GND (SUBSTRATE) SHUTDOWN
1 2 14
ERROR AMP +5V
9
EB
+5V C.L. COMPENSATION
4 5
+SENSE SENSE
8
10
1k
10k
RECOMMENDED OPERATING CONDITIONS
VIN Input Voltage Collector Voltage Error Amp Common Mode Range Output Current Reference Load Current Oscillator Charging Current Oscillator Frequency Range RT CT TAMB Oscillator Timing Resistor Oscillator Timing Capacitor Operating Ambient Temperature Range IP1524 IP2524 IP3524 (each transistor) +8 to +40V 0 to +40V +1.8 to +3.4V 0 to 100mA 0 to 20mA 30µA to 2mA 50Hz to 500kHz 1.8k to 100k 1nF to 0.1µF 55 to +125°C -25 to +85°C 0 to +70°C
Semelab plc.
Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
Prelim. 3/95
LAB
ELECTRICAL CHARACTERISTICS (TJ = 25°C unless otherwise stated)
Parameter Output Voltage Line Regulation Load Regulation Ripple Rejection Short Circuit Current Temperature Stability Long Term Stability Test Conditions 1 IP1524 IP2524 Min. Typ. Max. Min. IP3524 Typ. Max. Units
SEME
IP1524 SERIES
REFERENCE SECTION TJ = Over Temp. Range
+VIN = 8 to 40V IL = 0 to 20mA f = 120Hz VREF = 0 TJ = Over Temp. Range TJ = Over Temp. Range TJ = Over Temp. Range
4.90
5.00 1 5 80
5.10 10 20 120 1 10
4.60
5.00 10 20 66 100 0.3 20
5.40 30 50
V mV dB mA
25
50 0.3 1
TJ = Over Temp. Range TJ = 125°C
1
% mV khr
OSCILLATOR SECTION
Initial Accuracy Voltage Stability Temperature Stability Minimum Frequency Maximum Frequency Sawtooth Peak Voltage Sawtooth Valley Voltage Clock Amplitude Clock Pulse Width Input Offset Voltage Input Bias Current Input Offset Current DC Open Loop Gain Output Low Level Output High Level Common Mode Rejection Supply Voltage Rejection Gain Bandwidth Product +VIN = 8 to 40V RT = 2.7k +VIN = 8 to 40V TJ = Over Temp. Range RT = 100k RT = 2k CT = 0.01µF CT = 0.01µF Output, Pin 3 Output, Pin 3 CT = 0.01µF CT = 0.01µF
2
CT = 0.01µF
6 0.1 1 120 200 300 3.6 0.6 3.0 0.3 1 4.0 0.5 0.1 1 72 3.8 70 70 90 100 3 80 0.5 3.8 70 70 1.0 5 2 0.5 60 1 2 240
5 0.5 1 2 120 300 3.6 1 3.5 0.5 2 1 80 0.5 10 10 1 Hz kHz V V µs mV µA dB V dB 3 MHz %
CT = 0.1µF CT = 0.001µF
TJ = Over Temp. Range TJ = Over Temp. Range
TJ = Over Temp. Range
ERROR AMP SECTION
TJ = Over Temp. Range TJ = Over Temp. Range TJ = Over Temp. Range TJ = Over Temp. Range VPIN1 VPIN2 150mV VPIN2 VPIN2 150mV
NOTES
1. Test Conditions unless otherwise stated: VIN = 20V , IREF = 0. 2. VCM = +1.8 to +3.4V 3. VCM = -1 to +1V
Semelab plc.
Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
Prelim. 3/95
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