Electrical characteristics, Block diagram, 5 threshold voltage <protection circuit> stb1 – Rainbow Electronics BD9731KV User Manual
Page 2: 5=2v, 1v vscp=0v, Iosink vstbh vstbl oscillating frequency <output, Stb1, 5> stb pin control voltage, Circuit current at stand-by
Electrical characteristics (
Unless otherwise noted; Ta=25˚C, Vcc=6V, fosc=0.20MHz, STB1~5=3V)
Circuit current at stand-by
Ist
—
—
1.485
2.4
1.425
0.90
—
4.5
1.5
2.5
1.5
1.0
10
9.5
1.515
2.6
1.575
1.10
µA
mA
V
V
V
V
Icc
Vref
VREGA
Vsc1~5
Vtsc
Circuit current at operating
<Reference voltage>
Output voltage
<Internal regulator>
Output voltage REGA
<Shutdown at overloaded>
CH1
~
5 threshold voltage
<Protection circuit>
STB1
~
5=0V
Iref=–1mA
Ireg=–1mA
VSCP1
~
5=2V
~
1V
VSCP=0V
~
1.5V
Symbol
Min.
Max.
Unit
Conditions
Typ.
Parameter
Triangle wave oscillator
fosc1
0.179
Vcc–0.3
—
—
—
2.0
–0.3
0.20
Vcc–0.1
0.1
—
—
—
—
0.221
—
0.3
30
–30
—
0.3
MHz
V
V
mA
mA
V
V
VSATH
VSATL
I
OSOURCE
Iosink
VSTBH
VSTBL
Oscillating frequency
<Output>
Output voltage 'H' at operating
Output voltage 'L' at operating
Maximum output source current
Maximum output sink current
<STB1
~
5>
STB pin
control voltage
Operating
Non-operating
RT=24k
Ω, CT=220pF
Io=10mA
Io=–10mA
SCP pin detection circuit
Block Diagram
Pch DRIVER
Pch DRIVER
Pch DRIVER
Nch DRIVER
REG A
VOLTAGE
REFERENCE
REG D
U.V.L.O
TIMER LATCH
S
Q
R
TRIANGLE
FORM
OSC
OSC
BUFFER
ON/OFF
LOGIC
VREGD
PVCC1
OUT1
RBIAS1
OUT2
RBIAS2
PGND1
PVCC2
OUT3
RBIAS3
OUT4
RBIAS4
RBIAS5
OUT5
PGND2
SCP5
S
T
B
5
S
T
B
4
S
T
B
23
S
T
B
1
C
T
R
T
NON5
INV5
FB5
DTC5
SCP4
INV4
FB4
DTC4
SCP3
INV3
FB3
DTC3
INV2
FB2
DTC2
SCP1
NON1
INV1
FB1
DTC1
VREF
30
.G
N
D
32
.V
C
C
V
R
E
G
A
S
C
P
To Control
To-Divers
ERRAMP1
ERRAMP2
ERRAMP3
ERRAMP4
ERRAMP5
PWM
PWM
PWM
PWM
PWM
SCP2
Block
SCPcomp1
SCPcomp2
SCPcomp3
SCPcomp4
SCPcomp5
Pch DRIVER
BD9731KV
34
43
40
41
42
39
38
36
35
37
26
24
23
25
19
21
22
20
14
16
17
18
15
31
29
33
3
2
1
4
5
44
8
7
6
9
10
13
12
11
27
28
48 47 46 45