1-1-3 Multi-Output Type Regulator ICs
STA801M
2-Output Separate Excitation Switching Mode Regulator ICs
sFeatures
• 2 regulators combined in 1 package
• Compact inline package
• Output current (0.5A
×
2 outputs)
• Output voltage of Ch2 selectable from 4 levels
• Built-in flywheel diode (Schottky barrier diode)
• Requires only 7 discrete components (2
outputs)
• Internally-adjusted phase corrections and output
voltages
• Built-in reference oscillator (125kHz) - Enables
to downsize a choke-coil due to IC's high
oscillating frequency. (Compared with conven-
tional Sanken devices)
• Built-in overcurrent and thermal protection circuits
• Built-in soft start circuits (Output ON/OFF available)
Part Number
STA801M
Ch1
5
sLineup
Output Voltage (V)
Ch2(Select one output)
9.0 / 11.5 / 12.1 / 15.5
sAbsolute
Maximum Ratings
Parameter
DC Input Voltage
Power Dissipation
Junction Temperature
Storage Temperature
Symbol
V
IN
P
D1
P
D2
T
j
T
stg
Ratings
43
6.7(With infinite heatsink)
1.6(Without heatsink, stand-alone operation)
+125
–40 to +125
Unit
V
W
W
°C
°C
sApplications
• For BS and CS antenna power supplies
• For stabilization of the secondary stage of switching power supplies
• Electronic equipment
sRecommended
Operating Conditions
Parameter
DC Input Voltage Range
Output Current Range per Channel
Operating Temperature Range
Symbol
V
IN
I
O
T
jop
Ratings
min.
Ch2 V
Omax.
+2
0
–20
max.
40
0.5
+125
Unit
V
A
°C
sElectrical
Characteristics
Ratings
Parameter
Symbol
min.
Ch1
Output voltage 1
Efficiency *
Temperature Coefficient of Output Voltage
Line Regulation
Load Regulation
Ch2
(Select one output)
Output voltage 2-2
Output voltage 2-3
Output voltage 2-4
V
O
2-4
Efficiency*
Temperature Coefficient of Output Voltage
Line Regulation
Load Regulation
Common
No-load Circuit Current
Oscillation Frequency
Overcurrent Protection Starting Current
Output voltage 2-1
V
O
1
Conditions
4.80
STA801M
typ.
5.00
V
IN
=20V, I
O
=0.3A
80
V
IN
=20V, I
O
=0.3A
±0.5
30
V
IN
=10 to 30V, I
O
=0.3A
10
V
IN
=20V, I
O
=0.1 to 0.4A
8.64
11.04
11.62
14.88
9.00
V
IN
=20V, I
O
=0.3A
11.50
V
IN
=20V, I
O
=0.3A
12.10
V
IN
=20V, I
O
=0.3A
15.50
V
IN
=20V, I
O
=0.3A
89
V
IN
=20V, I
O
=0.3A
±2.0
40
V
IN
=20 to 30V, I
O
=0.3A
30
V
IN
=20V, I
O
=0.1 to 0.4A
15
125
0.51
0.7
120
130
16.12
12.58
11.96
9.36
40
90
max.
5.20
(T
a
=25°C)
Unit
V
%
mV/°C
mV
mV
V
V
V
V
%
mV/°C
mV
mV
mA
kH
Z
A
η
1
Conditions
∆V
O
/∆T
a1
∆V
OLINE1
Conditions
∆V
OLOAD1
Conditions
V
O
2-1
Conditions
V
O
2-2
Conditions
V
O
2-3
Conditions
V
O
2-4
Conditions
η
Conditions
∆V
O
/∆T
a
∆V
OLINE
Conditions
∆V
OLOAD
Conditions
I
CC
f
I
S1
* Efficiency indicates the value when only one channel is active. The value can be calculated as shown below. 7.5mA is deducted for the no-load circuit current of
output.
Icc at unused
2
η
=
V
O
•I
O
V
IN
•(I
IN
–0.0075)
×
100(%)
84
ICs