TDA7278 STMicroelectronics, TDA7278 Datasheet - Page 3

• Manufacturer Part Number: TDA7278
• Description: Audio DSPs CD Actuator Driver
• Manufacturer: STMicroelectronics

Specifications of TDA7278

• Mounting Style: SMD/SMT
• Package / Case: PQFP-44
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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