TA2058F

TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA2058F Power Driver IC for CD Player TA2058F is a power driver IC developed for CD players. This IC have built-in 4 channel BTL power amplifiers which drives focus-coil and tracking coil for 3-beam pick-up head, disc motor and feed motor. Features 4 channel BTL linear divers Few external parts Fixed voltage gain : Gv = 15dB (typ.) High output power : VOM1 = 5 Vp-p (typ.) VCC = 5 V, RL = 5 Ω : VOM2 = 6 Vp-p (typ.) VCC = 6 V, RL = 5 Ω Thermal shut down protector Input reference voltage short protector Small Package : Power-flat package 1 mm pitch 20 pins Operation Supply Voltage Range : VCC (opr) = 4.0~10.0 V (Ta = 25°C) Block Diagram Weight: 0.8 g (typ.) TA2058F 1 2003-07-08 Terminal Explanation Terminal No. 1 Symbol SVCC Function Supply terminal of small signal Input for CH1 2 IN1 Not biased inside. 3 4 5 FIN1 6 7 8 9 PVCC1 OUT1+ OUT1− PGND OUT2− OUT2+ PVCC2 IN2 Supply terminal of output stage for CH1 Supply terminal of output stage are not connected to other channel terminal. Non-inverted output for CH1 Inverted output for CH1 Power GND Connected to FIN2 and substrate. Inverted output for CH2 Non-inverted output for CH2 Supply terminal of output stage for CH2 Input for CH2 Input reference voltage 10 VRI Under condition of VR1 ≤ 1.8 V, internal bias circuit is shut off. TA2058F Equivalent Circuit Same as CH1 Same as CH1 Same as CH1 Same as CH1 11 12 13 14 15 FIN2 16 17 18 19 2...