BD7905BFS

更新时间： 2024-01-11 05:22:37

品牌	Logo	应用领域
罗姆 - ROHM		驱动器 DVD
页数	文件大小	规格书
18页	202K
描述
6CH Power Driver for CD-ROM, DVD-ROM

阅读下载

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

BD7905BFS 数据手册

BD7905BFS

Optical disc ICs

!Table of measure circuit switches position 3

(V^CC=SPVM=SLVM=12V, DVCC=AVM=5V, VC=1.65V, RL (SL) =8Ω+47µH, RL (SP) =2Ω+47µH, RL (ACT, LD) =8Ω,

SLRNF=0.5Ω, SPRNF=0.22Ω, H−=2.5V, HU+=2.6V, HV+=HW+=2.4V)

INPUT

CTL

SWITCH

Measure

point

Designation

Conditions

VIN

RL SP SL IL

Actuator driver block

VOFFT

1.65V

3.3V

VOHFT

IL=500mA

5−OUT+ (−)

(0V)

VOLFT

IL=−500mA

OUT+ (−)

(3.3V)

GVFT

0.25V

20log |(VO − VOFFT) / 0.25)|

Loading driver block

VOFLD

1.65V

3.3V

VOHLD

IL=500mA

12−OUT+ (−)

(0V)

VOLLD

IL=−500mA

OUT+ (−)

(3.3V)

GVLD

CTL1, CTL2

VIH

20log |(VO − VOFFT) / 0.25)|

0.25V

1.65V

Check active at "H"=2.0

IQVC

VIL

Check stand-by at "L"=0.5

CTL1, CTL2

VMV

1.65V

Check all output at V

=0.7V

OUTPUT

VMVCC

Check all output at V^CC=3.8V

!Circuit operation

1. Driver control terminal 1 and 2 (pin22 and pin23)

All the drivers and spindle-drive braking mode and input output gain can be switched on/off by inputting combinations

of H-level signal (higher than 2V) and L-level signal (lower than 0.5V) to these terminals.

CTL1

(Pin22)

CTL2

(Pin23)

Spindle

Sled

Focus

Tracking

−

... ON

... OFF

CTL1

CTL2

input output gain (spindle driver)

245mArms/V (Typ.)

SPIN > V

SPIN < V

(Pin22)

(Pin23)

Forward-rotation

mode

Reverse-rotation

braking mode

Forward-rotation

mode

Short-circuit braking

mode

1.5Arms/V (Typ.)

1) Standby mode

The IC is brought into standby state, and its power dissipation can be limited.

2) Drivers muting

All the output channels except the loading are muted and their outputs are turn off.

12/17

1...9 10 111213 14 15...18

下载PDF

与BD7905BFS相关器件

型号	品牌	描述	获取价格	数据表
BD7907FS	ROHM	6-channel Combo driver IC	获取价格
BD791	MOTOROLA	Complementary Plastic Silicon Power Transistors	获取价格
BD791	ONSEMI	POWER TRANSISTOR SILICON	获取价格
BD791	NJSEMI	Trans GP BJT NPN 100V 4A 3-Pin TO-225	获取价格
BD791/D	ETC	NPN Plastic Silicon Power Transistor	获取价格
BD79104FV-LA	ROHM	This product is a rank product for the industrial equipment market. This is the best produ	获取价格