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PDF IP3525A Data sheet ( Hoja de datos )
| Número de pieza | IP3525A | |
| Descripción | REGULATING PULSE WIDTH MODULATORS | |
| Fabricantes | Seme LAB | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de IP3525A (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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SEME
LAB
TOP VIEW
INV. INPUT 1
N. I. INPUT 2
SYNC 3
OSC. OUTPUT 4
CT 5
RT 6
DISCHARGE 7
SOFT START 8
16 VREF
15 VIN
14 OUTPUT B
13 VC
12 GROUND
11 OUTPUT A
10 SHUTDOWN
9 COMPENSATION
J Package – 16 Pin Ceramic DIP
N Package – 16 Pin Plastic DIP
D Package – 16 Pin Plastic (300) SOIC
IP1525A SERIES
IP1527A SERIES
REGULATING
PULSE WIDTH
MODULATORS
FEATURES
• 8 to 35V operation
• 5.1V reference trimmed to ±1%
• 100Hz to 500kHz oscillator range
• Separate oscillator sync terminal
• Adjustable deadtime control
• Internal soft start
• Input undervoltage lockout
• Latching PWM to prevent multiple pulses
• Dual source/sink output drivers
Part
Number
IP1525A
IP1527A
IP3525A
IP3527A
J–Pack
16 Pin
N–Pack
16 Pin
D–16
16 Pin
Order Information
Temp.
Range
-55 to +125°C
-55 to +125°C
0 to +70°C
0 to +70°C
Note:
To order, add the package identifier to the part number.
eg. IP1525AJ
IP3527AD–16
ABSOLUTE MAXIMUM RATINGS (Tcase = 25°C unless otherwise stated)
+VIN
Input Voltage
Collector Voltage
+40V
+40V
Logic Inputs
–0.3 to +5.5V
Analogue Inputs
Output Current, Source or Sink
–0.3 to +VIN
500mA
Reference Output Load Current
Internally Limited
Oscillator Charging Current
5mA
PD
PD
TJ
TSTG
TL
Power Dissipation
TA = 25°C
Derate @ TA > 50°C
Power Dissipation
TC = 25°C
Derate @ TC > 25°C
Operating Junction Temperature
Storage Temperature Range
Lead Temperature
(soldering, 10 seconds)
1W
10mW/°C
2W
16mW/°C
See Ordering Information
–65 to +150°C
+300°C
Semelab plc. Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
Prelim. 3/95
1 page  
SEME
LAB
IP1525A SERIES
IP1527A SERIES
APPLICATIONS INFORMATION
+ VS U P PL Y
RETURN
Q1
R1
TO OUTPUT FILTER
R2
13
+ VC
A
IP1525A
11
B
GND
14
12
+ VS U P P L Y
R1
RETURN
13
+ VC
A
IP1525A
11
B
GND
14
12
C1
R2
C2
R3
T1
Q1
Q2
For single–ended supplies, the driver outputs are grounded.
The VC terminal is switched to ground by the totem–pole
source transistors on alternate oscillator cycle.
In conventional push–pull bipolar designs, forward base drive
is controlled by R1–R3. Rapid turn–off times for the power
devices are achieved with speed–up capacitors C1 and C2.
+ VS U P P L Y
R1
RETURN
13
+ VC
A
IP1525A
B
GND
Q1
11
Q2
14
12
T1
+ VS U P PL Y
13
+ VC
A
IP1525A
T1
11
B
GND
14
12
RETURN
Q1
R1
Q2
R2
C1
T2
C2
The low source impedance of the output drivers provides
rapid charging of power FET input capacitance while minimis-
ing external components.
Low power transformers can be driven directly by the
IP1525A. Automatic reset occurs during deadtime when both
ends of the primary winding are switched to ground.
Semelab plc. Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
Prelim. 3/95
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet IP3525A.PDF ] | |
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