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IP1844A View Datasheet(PDF) - Semelab - > TT Electronics plc

Part Name
Description
View to exact match
IP1844A
Semelab
Semelab - > TT Electronics plc  Semelab
IP1844A Datasheet PDF : 6 Pages
1 2 3 4 5 6
SEME
LAB
IP1844A SERIES
IP1845A SERIES
TOP VIEW
COMP 1
VFB 2
ISENSE 3
RT /CT 4
8 VREF
7 VCC
6 OUTPUT
5 GROUND
CURRENT MODE
REGULATING
PULSE WIDTH
MODULATORS
J Package – 8 Pin Ceramic DIP
N Package – 8 Pin Plastic DIP
D-8 Package – 8 Pin Plastic (150) SOIC
FEATURES
TOP VIEW
• Guaranteed ±1% reference voltage tolerance
COMP 1
N/C 2
VFB 3
14 VREF
13 N/C
12 VCC
• Accurate oscillator discharge current
• Guaranteed ±10% frequency tolerance
• Low start–up current (<500 mA)
• Under voltage lockout with hysteresis
N/C 4
11 VC
• Output state completely defined for all supply
ISENSE 5
10 OUTPUT
N/C 6
RT /CT 7
9 GROUND
POWER
8
GROUND
D-14 Package – 14 Pin Plastic (150) SOIC
and input conditions
• Interchangeable with IP and UC1844/5 series for
improved operation
• 500kHz Oscillator operation
250kHz Output operation
Order Information
Part
Number
IP1844A
IP2844A
IP3844A
IP1845A
IP2845A
IP3845A
J–Pack N–Pack
8 Pin
8 Pin
D–8
8 Pin
D–14
14 Pin
Temp.
Range
-55 to +125°C
-25 to +85°C
0 to +70°C
-55 to +125°C
-25 to +85°C
0 to +70°C
Note:
To order, add the package identifier to the
part number.
eg. IP1844AD–14
IP3845AJ
ABSOLUTE MAXIMUM RATINGS (Tcase = 25°C unless otherwise stated)
VCC
Supply Voltage
(low impedance source)
(ICC < 30mA)
+30V
Self limiting
IO
Output Current
±1A
Output Energy
(capacitive load)
5µJ
Analog Inputs
(pins 2 and 3)
Error Amp Output Sink Current
–0.3V to +VCC
10mA
PD
PD
PD
TSTG
TL
Power Dissipation
Derate @ Tamb > 50°C
Power Dissipation
Derate @ Tamb > 50°C
Power Dissipation
Derate @ Tcase > 25°C
Storage Temperature Range
Lead Temperature
Tamb = 25°C
Tcase = 25°C
Tcase = 25°C
J, N Packages
D Package
J, N Packages
(soldering, 10 seconds)
1W
10mW/°C
725mW
7.25mW/°C
2W
16mW/°C
–65 to 150°C
+300°C
Semelab plc. Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
Prelim. 2/95
 

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