Siemens TDA4862
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).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 TDA 4862 Bipolar IC P-DIP-8-1 P-DSO-8-1 Type w TDA 4862 w TDA 4862 G w = New type Ordering Code Q67000-A8368-A205 Q67006-A8369-A703 Package P-DIP-8-1 P-DSO-8-1 Semiconductor Group 1 1998-02-16 TDA 4862
DESCRIPTION
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 undervolt...