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TA2125AF

Power Driver IC for CD Player

Toshiba 

Preliminary TOSHIBA Bipolar Liner Integrated Circuit Silicon Monolithic

TA2125AF

Power Driver IC for CD Player

TA2125AF

TA2125AF is power driver IC developed for CD players.

This IC have built-in 4 channel BTL power amplifiers and 1

channel H-Bridge driver.

Which drives focus-coil and tracking coil for 3-beam pick-up head,

disc motor, feed motor and loading motor.

Features

• 4 channel BTL linear drivers

High output power: Vout = 5.1 Vp-p (VCC = 8 V, RL = 8 Ω)

Stand-by switch for BTL drivers

• 1 channel H-Bridge: VCE (H) + VCE (L) = 1.3 V (VR = VM = 8 V,

IO = 200 mA)

Logic control (forward, revers, brake, stand-by)

• Punch through current restriction diode for H-bridge

• 5 V regulator reference amp (with external output Tr.)

• Thermal shut down protection

• Operating supply voltage range: VCC = 5.0 to 9.0 V

Weight: 0.74 g (typ.)

Block Diagram

4ch

Driver

REG

VR RIN FIN STB IN3 IN4 STB

VCC

REG OUT

RL4

RL3

N.C.

36 35 34 33 32 31 30 29 28 FIN 27 26 25 24 23 22 21 20 19

Control STBY

Logic

STBY

×3 ×3 ×3 ×3

Iref TSD

×3 ×3 ×3 ×3

12345678

N.C. N.C.

RL5

VCIN IN1

9 FIN

GND

10 11 12 13 14 15 16 17 18

N.C. N.C.

RL2

RL1

IN2

1

2003-10-07

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