BD7902 View Datasheet(PDF) - Unspecified

Part Name

Description

Manufacturer

BD7902

6CH Power Driver for CD-ROM, DVD-ROM

Unspecified 

Optical disc ICs

BD7902CFS

!Electrical characteristics

(unless otherwise noted, Ta=25°C, SLVDD=VCC=12V, DVCC=AVM=5V, VC=1.65V, SPRNF=0.33Ω, SLRNF=0.5Ω)

Parameter

Symbol Min. Typ. Max. Unit

Conditions

Circuit

Circuit current

Quiescent current 1

IQ1

−

12

20

mA VCC (Loading OFF)

Fig1, 2

Quiescent current 2

IQ2

−

9

16

mA VCC (Loading ON)

Fig1, 2

Quiescent current 3

IQ3

−

2.7

4.9

mA DVCC

Fig1, 2

Stanby-on current 1

IST1

−

0.09

0.2

mA VCC

Fig1, 2

Stanby-on current 2

IST2

−

0

0.1

mA DVCC

Fig1, 2

Sled driver block

Input dead zone (one side)

Input output gain

Output ON resistor (upper)

VDZSL

gmSL

RONUSL

15

0.8

(0.4)

−

40

1.0

(0.5)

1.8

65

1.2

(0.6)

2.3

mV

A/V

(V/V)

Ω

SLRNF=0.5Ω

IL=500mA

Fig1, 2

Fig1, 2

Fig1, 2

Output ON resistor (lower)

Output limit current

PWM frequency

RONLSL

ILIMSL

fosc

−

0.8

(0.4)

−

0.85

0.94

(0.47)

100

1.5

1.08

(0.54)

−

Ω IL=−500mA

A

(V)

SLRNF=0.5Ω

kHz

Fig1, 2

Fig1, 2

Fig1, 2

Spindle driver block 〈 Hall bias 〉

Hall bias voltage

VHB

0.7

1.15

1.6

V IHB=10mA

Fig1, 2

Spindle driver block 〈 Hall amplifier 〉

Input bias current

IHIB

−

1

5

µA

Fig1, 2

Minimum input level

VHIM

50

−

−

mVPP

Fig1, 2

Common mode input Range VHICM

1

−

4

V

Fig1, 2

Spindle driver block 〈 Torque control 〉

Input dead zone (one side)

Input output gain

Output ON resistor (upper)

Output ON resistor (lower)

Output limit current

PWM frequency

VDZSP

gmSP

RONUSP

RONLSP

ILIMSP

fosc

20

2.4

(0.8)

−

−

1.2

(0.4)

−

50

3.0

(1.0)

0.6

0.35

1.42

(0.47)

100

90

3.6

(1.2)

1.0

0.7

1.64

(0.54)

−

mV

A/V

(V/V)

Ω

Ω

A

(V)

kHz

SPRNF=0.33Ω

IL=500mA

IL=−500mA

SPRNF=0.33Ω

Fig1, 2

Fig1, 2

Fig1, 2

Fig1, 2

Fig1, 2

Fig1, 2

Spindle driver block 〈 FG output 〉

High voltage

VFGH

−

Low voltage

VFGL

−

4.9

−

0.1

−

V 100kΩ pull up to DVCC

V

Fig1, 2

Fig1, 2

Actuator driver block

Output offset voltage

VOFFT −50

0

50

mV

Fig1, 2

Output saturation voltage "H" VOHFT

−

Output saturation voltage "L" VOLFT

−

0.45

0.8

0.45

0.8

V IL=500mA

V IL=−500mA

Fig1, 2

Fig1, 2

Voltage gain

GVFT

16.0

17.5 19.0

dB

This product is not designed for protection against redioactive rays.

Fig1, 2

6/17

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