TEXAS INSTRUMENTS  UC3844N  CURRENT MODE PWM CONTROLLER, 25V, 8-DIP

TEXAS INSTRUMENTS UC3844N

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Product Overview


The UC3844N is a Current Mode PWM Controller optimized for off-line and DC to DC converters. This device provides the necessary features to implement off-line or DC-to-DC fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include under-voltage lockout featuring start up current less than 1mA, a precision reference trimmed for accuracy at the error amp input, logic to insure latched operation, a PWM comparator which also provides current limit control and a totem pole output stage designed to source or sink high peak current. The output stage, suitable for driving N-channel MOSFETs, is low in the off state.
  • Optimized for off-line and DC to DC converters
  • Low start up current (<1mA)
  • Automatic feed forward compensation
  • Pulse-by-pulse current limiting
  • Enhanced load response characteristics
  • Under-voltage lockout with hysteresis
  • Double pulse suppression
  • High current totem pole output
  • Internally trimmed bandgap reference
  • Green product and no Sb/Br

Applications

Power Management
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Product Specifications, Documents & More


  • Controller IC Case Style: DIP
  • Digital IC Case Style: DIP
  • Frequency: 450kHz
  • Input Voltage: 25V
  • MSL: -
  • No. of Pins: 8
  • Operating Temperature Max: 70°C
  • Operating Temperature Min: 0°C
  • Output Current: 1A
  • Output Voltage: 13.5V
  • Packaging: Each
  • Power Dissipation Pd: 1W
  • SVHC: No SVHC (15-Jun-2015)
  • Supply Voltage Max: 25V
  • Supply Voltage Min: 12V
  • Supply Voltage Range: 12V to 25V

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Availability

Availability:  457


  • 457 in stock for same day shipping
 
Check stock and lead times
    More stock available week commencing 3/7/16

Price for: Each 1

Minimum order quantity: 1

Order multiple quantity: 1

Price: $1.63 $1.63

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Price

Quantity List Price
1 - 9 $1.63
10 - 99 $1.30
100 - 499 $1.00
500 - 999 $0.772
1000 - 2499 $0.719
2500 - 4999 $0.624
5000 - 9999 $0.614
10000+ $0.61
 
 
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Substitutes


  Newark Part No. Manufacturer Part No Manufacturer / Description
Availability Price Qty
ascdsc ascdsc ascdsc ascdsc ascdsc
Exact
89K1264
UC3844BN

UC3844BN

STMICROELECTRONICS

CURRENT MODE PWM CONTROLLER, 30V, 8-DIP

0

Price for: Each 1

100+ $0.676 250+ $0.612 500+ $0.57 1000+ $0.506

Buy
    More stock available week commencing 4/25/16

Not Normally Stocked

Non-Cancelable / Non Returnable

24M1676
UC3845BN

UC3845BN

STMICROELECTRONICS

IC, PWM CONTROLLER, 3845, DIP8

789 

Price for: Each 1

1+ $0.616 10+ $0.528 25+ $0.462 100+ $0.398

Buy

Freight Charge: $20.00 once per order

Delivery in 5-7 days for in stock items

 
Check more stock
    More stock available week commencing 5/16/16
Suggested Substitutes
76C9251
TL3844P

TL3844P

TEXAS INSTRUMENTS

CURRENT MODE PWM CONTROLLER, 25V, 8-DIP

123 

Price for: Each 1

1+ $1.07 10+ $0.852 100+ $0.656 500+ $0.506

Buy

see cut-off times

 
Check more stock
    More stock available week commencing 3/28/16

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