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PDF BD8226EFV Data sheet ( Hoja de datos )
| Número de pieza | BD8226EFV | |
| Descripción | 4ch System Motor Driver | |
| Fabricantes | ROHM Semiconductor | |
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Datasheet
System Motor Driver Series for CD・DVD Player
4ch System Motor Driver
For Car Audio
BD8226EFV
General Description
BD8226EFV is a 5-input, 4-output BTL driver
developed for driving Spindle motor (CH1),
Sled/Loading motor (CH2) and the actuator coils
(CH3:Tracking coil, CH4:Focus coil).
This IC can be used for CD and DVD applications.
Features
■ 4CH BTL Driver
■ Has wide dynamic range
■ Built-in thermal shutdown circuit
■ Separating Vcc into Pre and Power (Power divides
into CH1/2 and CH3/4) can improve efficiency.
■ Switches CH2 input using Control input terminal
(CNT)
■ Incorporates mute function using CNT and MUTE
terminals
■ Built-in variable regulator control
Key Specifications
■ Power supply voltage
■ Operating temperature range
■ Maximum output amplitude
(VPREVCC1=VPOWVCC1,2=8V, RL=8Ω)
CH1,CH2
CH3,CH4
5.5V to 14V
-40°C to +85°C
6.0V(Typ)
5.3V(Typ)
Package
HTSSOP-B24
W(Typ) D(Typ) H(Max)
7.80mm x 7.60mm x1.00mm
Applications
Car Audio
Typical Application Circuit
HTSSOP-B24
DSP
REGOUT
24 23 22 21
IN1 CNT IN2-1 IN2-2
20
BIAS
19
IN3
18 17 16 15 14 13
IN4 MUTE PREGND REG(+) REG-B PREVCC
BD8226EFV
POWVCC1 POWGND1 VO1(-) VO1(+) VO2(-) VO2(+) VO3(-) VO3(+)
12345678
VO4(-) VO4(+) POWGND2 POWVCC2
9 10 11 12
SPINDLE
MOTOR
CH1
SLED/LOADING
MOTOR
CH2
TRACKING
COIL
CH3
FOCUS
COIL
CH4
Figure 1. Application Circuit
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
1/16
TSZ02201-0G1G0C600020-1-2
3.JUL.2013 Rev.002
1 page  
BD8226EFV
Datasheet
Application Information
1. Driver Control
The mute function of the driver can be used by switching the MUTE and CNT terminals to High and Low levels.
The table below shows the logic.
INPUT
OUTPUT
MUTE CNT
CH1,3,4
CH2
HH
ACTIVE
LD ON
HL
ACTIVE
SL ON
LH
LL
MUTE
MUTE
LD ON
MUTE
SL : SLED LD : LOADING
2. BIAS Drop Mute
If BIAS terminal (Pin 20) voltage becomes 0.7V (Typ) or less, output of all channels turns OFF.
Please set it to a minimum of 1.3V for typical use.
(However, the mute function doesn't work for CH2 when CNT=High. )
3. PREVCC Drop Mute
If PREVCC terminal voltage becomes 3.8V (Typ) or less, output of all channels turns OFF.
If PREVCC terminal voltage becomes 4.0V (Typ) or more, output of all channels turns ON.
4. Thermal shutdown circuit (TSD)
Thermal shutdown circuit is designed to turn off output of all channels when the junction temperature (Tj) reaches 175°C
(Typ) (with 25°C (Typ) hysteresis).
5. Regulator
Output voltage of the regulator (VREGOUT) is set according to the following expression.
VREGOUT VREGP R1 R2
R2
Please disable the oscillation prevention beforehand, and use the capacitor connected between the regulator output
(VREGOUT) and PREGND after confirming parameters such as temperature characteristics in actual operation.
The power supply voltage fluctuation described in the Electrical Characteristics is obtained when VREGOUT is 5V.
Please note that fluctuation bands increase from the described values if VREGOUT is set to a value bigger than 5V.
BD8226EFV
REGB
1.25V
REG(+)
PREGND
PREVCC
Q1
R1
VREGOUT
C1
R2
V
VREGP
Please shorten this as much as possible.
Q1：PNP Transistor 2SB1188 Rank Q
C1:Electrolytic capacitor Rubycon YK 25V10µF
Figure 4. Regulator Block Diagram
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/16
TSZ02201-0G1G0C600020-1-2
3.JUL.2013 Rev.002
5 Page 
BD8226EFV
Application Board Pattern
Datasheet
Figure 10. Top Silkscreen Overlay
Figure 11. Top Layer
Figure 12. Bottom Silkscreen Overlay
Figure 13. Bottom Layer
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/16
TSZ02201-0G1G0C600020-1-2
3.JUL.2013 Rev.002
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet BD8226EFV.PDF ] | |
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