FAN8742 Просмотр технического описания (PDF) - Fairchild Semiconductor

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FAN8742

Spindle Motor and 6-CH Driver [Spindle(PWM), Sled 2-CH(PWM) 4-CH(Linear)]

Fairchild Semiconductor 

1. 56-TSSOP-EP, Case 1: Single layer PCB with 1 signal plane only, PCB size is 76mm × 114mm × 1.6mm.

2. 56-TSSOP-EP, Case 2: Multi layer PCB with 1 signal, 1 power and 1 ground planes, PCB size is 76mm × 114mm × 1.6mm, Cu

plane sizes for power and ground is 74mm × 62mm × 0.035mm. Down pad of IC is soldered on the PCB.

3. 56-TSSOP-EP, Case 3: PCB condition is same to case 2 except via holes, which penetrate PCB all layers. Down pad of IC is sol-

dered on the PCB.

4. 56-SSOP-HS, Case 1: Single layer PCB with 1 signal plane only, PCB size is 76mm × 114mm × 1.6mm.

5. 56-SSOP-HS, Case 2: Multi layer PCB with 1 signal, 1 power and 1 ground planes, PCB size is 76mm × 114mm × 1.6mm, Cu

plane sizes for power and ground is 74mm × 62mm × 0.035mm.

6. Power dissipation is reduced by -12.8mW/°C for using above Ta=25°C in 56-TSSOP-EP, case 1.

7. Power dissipation is reduced by -25.6mW/°C for using above Ta=25°C in 56-TSSOP-EP, case 2.

8. Power dissipation is reduced by -32.8mW/°C for using above Ta=25°C in 56-TSSOP-EP, case 3.

9. Power dissipation is reduced by -24.8mW/°C for using above Ta=25°C in 56-SSOP-HS, case 1.

10. Power dissipation is reduced by -37.6mW/°C for using above Ta=25°C in 56-SSOP-HS, case 2.

11. Do not exceed PD and SOA (Safe Operating Area).

Power Dissipation Curve

Power dissipation, [W]

5

4

56-SSOP-HS,case2

56-TSSOP-EP,case3

56-TSSOP-EP,case2

3

56-SSOP-HS,case1

56-TSSOP-EP,case1

2

1

SOA

25

50

75

100

Recommended Operating Conditions (Ta = 25°C)

Parameter

Supply Voltage (Spindle Signal block)

Supply Voltage (Digital block)

Supply Voltage (Spindle driver)

Supply Voltage (Sled driver)

Supply Voltage (BTL driver)

Supply Voltage (BTL signal block)

Output current(Spindle)

Output current(Focus, Tracking, Loading)

Output current(Sled)

Min.

4.5

4.5

4.5

4.5

4.5

4.5

-

-

-

125

150

175

Ambient temperature, [oC]

Typ.

5

5

12

12

12

12

1.0

0.5

0.5

Max.

5.5

5.5

13.2

13.2

SVCC2

13.2

1.5

0.8

0.8

Unit

V

V

V

V

V

V

A

A

A

8

FAN8741/FAN8742 Rev. 1.0.1

www.fairchildsemi.com

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