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PUCC3801

Features: ·Very low start-up supply current; 50 mA typical·Low operating supply current; 1.2 mA typical·Accurate, internally-trimmed, fixed frequency oscillator (100 kHz). No external timing components needed·Internal slope compensation. No external ramp components needed·Built-i·over-voltage and ...

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SeekIC No. : 004467098 Detail

PUCC3801: Features: ·Very low start-up supply current; 50 mA typical·Low operating supply current; 1.2 mA typical·Accurate, internally-trimmed, fixed frequency oscillator (100 kHz). No external timing compone...

PUCC3801 Data Sheet

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Part Number:
PUCC3801
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

·Very low start-up supply current; 50 mA typical
·Low operating supply current; 1.2 mA typical
·Accurate, internally-trimmed, fixed frequency oscillator (100 kHz). No external timing components needed
·Internal slope compensation. No external ramp components needed
·Built-i·over-voltage and under-voltage detection
·High-speed over-current trip; 170 ns typical
·Over-voltage clamp o·supply voltage (VDD)
·Internal divider regulates VDD to 12 V. No external divider needed
·Leading edge blanking of the current sense signal
·Control frequency modulated over a narrow band to reduce Electromagnetic Interference (EMI)
·High output drive capability; 150 ns typical rise and fall time into 2 nF load
·Wide bandwidth (10 MHz) error amplifier with external compensatio·pi·and simple interface to optocoupler
·Accurate internal bandgap reference.


Application

·Off-line switched mode power supplies
·Laptop computer mains adaptors
·Printer power supplies.


Pinout

Connection Diagram


Specifications

Symbol
Parameter
Conditions
Min
Max
Unit
VDD supply voltage IDD15 mA
-
15
V
low impedance source
-
13
V
VCOMP voltage on COMP pin  
-0.3
VREG + 0.3
V
VFB voltage on FB pin  
-0.3
VREG + 0.3
V
IDD supply current into VDD pin  
-
15
mA
IORM repetitive peak output current  
-
0.6
A
IREG current out of REG pin  
-
10
mA
ICOMP current into COMP pin  
-
1
mA
PTOT total power dissipation  
PUCC3801P  
-
0.5
W
PUCC3801T  
-
0.3
W
Tj junction temperature  
0
105
TSTG storage temperature non-operating
-60
+150
Tsp solder point temperature during soldering; t 10 s
-
300



Description

The PUCC3801 is a current-mode Pulse Width Modulated (PWM) controller containing all the control and protection functions necessary to implement an off-line, flyback or forward converter with a minimum number of external components.




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