POWER DRIVER IC FOR CD PLAYER
Description
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TA2092N
Power Driver IC for CD Player
The TA2092N is a power driver IC developed for CD players.
This IC have built-in 4 channel BTL power amplifiers which drives focus-coil, tracking-coil for 3-beam pick-up head, disc motor and feed motor.
Features
· 4 channel BTL linear drivers · 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 shutdown circuit · Input reference voltage short protection · Operating voltage range: VCC (opr) = 4.
0~10.
0 V (Ta = 25°C)
Block Diagram
Weight: 1.
2 g (typ.
)
TA2092N
1 2001-12-19
Terminal Explanation
Terminal No.
Symbol
Function
Power GND 1 PW GND ● Connected to substrate.
● pin 1, 12, 13, 24 are connected inside.
2 OUT (−) 1 Inverted output for CH1
Supply terminal of output stage for CH1 3 PVCC1 ● Supply terminal of output stage are not connected to other
channel terminal.
4 OUT (+) 1 Non-inverted output for CH1
5
VIN1
Input for CH1 ● Not biased inside
Input reference voltage 6 VRI ● Under condition of VRI ≤ 1.
8 V, internal bias circuit is shut off.
● No signal input condition: VRI = VIN
TA2092N
Equivalent Circuit
7
VCI
Output reference voltage ● VOUT = VCI = (VCC−VF) /2
8 VIN2 Input for CH2 9 OUT (+) 2 Non-inverted output for CH2 10 PVCC2 Supply terminal of output stage for CH2 11 OUT (−) 2 Inverted output for CH2 12 PW GND Power GND 13 PW GND Power GND 14 OUT (−) 3 Inverted output for CH3 15 PVCC3 Supply terminal of output stage for CH3 16 OUT (+) 3 Non-inverted output for CH3 17 VIN3 Input for CH3 18 S GND Supply terminal of small signal GND 19 S VCC Small signal GND 20 VIN4 Input for CH4 21 OUT (+) 4 Non-inverted output for CH4 22 PVCC4 Supply terminal of output stage for CH4 23 OUT (−) 4 Inverted output for CH4 24 PW GND Power GND
Same as channel 1
Same as channel 1 ― ―
Same as channel 1
2 2001-12-19
Maximum Ratings (Ta = 25°C)
TA2092N
Characteri...
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