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TDA 4862

Features: • IC for sinusoidal line-current consumption• Power factor approaching 1• Controls boost converter as an active harmonics filter• Internal start-up with low current consumption• Zero current detector for discontinuous operation mode• High current totem...

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SeekIC No. : 004516015 Detail

TDA 4862: Features: • IC for sinusoidal line-current consumption• Power factor approaching 1• Controls boost converter as an active harmonics filter• Internal start-up with low current...

TDA 4862 Data Sheet

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Part Number:
TDA 4862
Supply Ability:
5000

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

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Upload time: 2025/1/12

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Product Details

Description



Features:

• IC for sinusoidal line-current consumption
• Power factor approaching 1
• Controls boost converter as an active harmonics filter
• Internal start-up with low current consumption
• Zero current detector for discontinuous operation mode
• High current totem pole gate driver
• Trimmed ± 1.4% internal reference
• Undervoltage lock-out with hysteresis
• Very low start-up current consumption
• Pin compatible to world standard
• Fast overvoltage regulator
• Current sense input with internal low pass filter


Pinout

Connection Diagram


Specifications

Parameter
Symbol
Limit Values
Unit
 Notes
min.
max.
Supply voltage at VCC Pin 8
VCC
0.3
V
  
supply + Z-current VCC-GND Pin 8
ICCZ
70
mA
 observe Pmax
Current into GTDRV Pin 7
IGTDRV
400
500
mA
 observe Pmax
Clamping current into GTDRV Pin 7
IGTDCH
100
mA
 VGTDRV > VCC
Clamping current into GTDRV Pin 7
IGTDCL
100
mA
 VGTDRV < 0.3 V
Voltage at VSENSE Pin 1
VVSENSE
0.3
17
V
  
Voltage at VAOUT Pin 2
VVAOUT
0.3
6
V
  
Voltage at MULTIN Pin 3
VMULTIN
0.3
17
V
  
Voltage at ISENSE Pin 4
VISENSE
10
17
V
  
Current into DETIN Pin 5
IDETINH
50
mA
 VDETIN> 6 V
Current into DETIN Pin 5
IDETINL
10
mA
 VDETIN < 0.9 V
Junction temperature
Tj
40
150
°C
  
Storage temperature
Tstg
50
150
°C
  
Thermal resistance system-air
TDA 4862
RthSA
100
K/W
 P-DIP-8-1
TDA 4862 G
RthSA
180
K/W
 P-DSO-8-1



Description

The TDA 4862 is excellent convenient for designing a preconverter in ballasts and switched mode power supplies with sinusoidal line current consumption and a power factor approaching unity.

The TDA 4862 controls a boost converter as an active harmonics filter in a discontinuous mode (free oscillating triangular shaped current mode).

The TDA 4862 comprises an internal start-up timer, a high gain voltage amplifier, an one quadrant multiplier for approaching unity power factor, a zero current detector, PWM and logic circuitry, and totem pole MOSFET gate driver. Protective features are: input undervoltage lockout with hysteresis, VCC zener clamp, cycle-by-cycle current limiting, output voltage limiting for fast and slow load changes up to open circuit, and a sinking gate driver current activated whenever undervoltage mode occurs.

The output voltage of this preconverter is regulated with high accuracy. Therefore the device can be used for world-wide line voltages without switches. The TDA 4862 is the improved version of the TDA 4817 with a pinout equivalent to world standard.




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