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TDA7278 数据表(PDF) 3 Page - STMicroelectronics

部件名 TDA7278
功能描述  HIGH-EFFICIENCY CD ACTUATOR DRIVER
PDF  15 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TDA7278 数据表(HTML) 3 Page - STMicroelectronics

  TDA7278 Datasheet HTML 1Page - STMicroelectronics TDA7278 Datasheet HTML 2Page - STMicroelectronics TDA7278 Datasheet HTML 3Page - STMicroelectronics TDA7278 Datasheet HTML 4Page - STMicroelectronics TDA7278 Datasheet HTML 5Page - STMicroelectronics TDA7278 Datasheet HTML 6Page - STMicroelectronics TDA7278 Datasheet HTML 7Page - STMicroelectronics TDA7278 Datasheet HTML 8Page - STMicroelectronics TDA7278 Datasheet HTML 9Page - STMicroelectronics Next Button
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PIN FUNCTIONS
N
o
Name
Function
21
WDINP
Watch dog input - AC coupled to WD
µcontroller output
(Disabled when connected to GND)
Watch dog & reset
circuit
20
CRES
Start up reset control for
µC & watch dog time constant
19
RESET
Reset output command to
µC (open collector)
41
BEMP
Battery empty comparator input
Battery control circuit
40
BLOW
Battery low comparator input
39
VCON
Battery level control output
VCON = Z VBEMP > VBCON > VBG
VCON = 1 VBEMP > VBG > VBLOW
VCON = 0 VBG > VBEMP > VBLOW
24
ENABLE
General Enable Input (active Low)
Band Gap Reference
18
VBG
Reference voltage capacitor
12
SSCAP
Soft start capacitor
VCPU DC-DC
converter
16
OUT 1
Switching transistor terminal high
17
OUT 2
Switching transistor terminal low
15
VCPU
Regulated voltage
14
IRC
Error amplifier output
13
INP
Error amplifier inverting input
11
VHIGH
Regulated Voltage
Vhigh Boost DC-DC
Converter
10
OUT
Switching transistor output
22
STCAP
Sawtooth toth
Oscillator
23
SYNC
Oscillator synchronizing input
4, 30
VBAT
Power supply voltage
6, 28
GND
Power ground
38
VREF 2
Buffered reference output voltage
37
VREF 1
Reference input voltage
5
FLIN 1
Switching Output
Focus actuator step
down converter
& H bridge
7
HOUT 1A
H bridge positive output
8
HIN 1
Regulated voltage H bridge supply
9
HOUT 1B
H bridge negative output
43
ERROR 1
Error input
29
FLIN 3
Switching Output
Tracking actuator
step down converter
& H bridge
27
HOUT 3A
H bridge positive output
26
HIN 3
Regulated voltage H bridge supply
25
HOUT 3B
H bridge negative output
35
ERROR 3
Error input
3
FLIN 2
Switching output
Spindle motor step
down converter
& H bridge
2
HOUT2A
H bridge positive output
1
HIN 2
Regulated voltage H bridge supply
44
HOUT 2B
H bridge negative output
42
ERROR 2
Error input
TDA7278
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