1-1-1 Linear Regulator ICs
SI-3000LU Series
Surface-Mount, Low Current Consumption, Low Dropout Voltage Linear Regulator ICs
sFeatures
• Compact surface-mount package (SOT89-5)
• Output current: 250 mA
• Low current consumption lq (OFF)
1
µ
A (V
C
=
0 V)
• Low dropout voltage: V
DIF
0.5 V (at I
O
= 250
mA)
• 4 types of output voltages (Adj, 1.8 V, 3.3 V,
5.0 V) available
• Built-in drooping-type-overcurrent and thermal
protection circuits
sAbsolute
Maximum Ratings
Parameter
DC Input Voltage
Output control terminal voltage
DC Output Current
Power Dissipation
Junction Temperature
Storage Temperature
Thermal Resistance (Junction to Ambient Air)
Symbol
V
IN
V
C
I
O
P
D*1
T
j*2
T
stg*2
Ratings
18
V
IN
250
0.75
–40 to +135
–40 to +125
146
Unit
V
V
mA
W
°C
°C
°C/W
(T
a
=25°C)
θ
j-a*1
*1: When mounted on glass-epoxy board 40
×
40 mm (copper laminate area 2%).
*2: Thermal protection circuits may operate if the junction temperature exceeds 135°C.
sApplications
• Auxiliary power supplies for PC
• Battery-driven electronic equipment
sRecommended
Operating Conditions
Ratings
Parameter
Input Voltage
DC Output Current
Operating Ambient Temperature
Symbol
V
IN
I
O
T
op
min.
*2, *3
max.
V
O
+2
*1
250
85
Unit
V
mA
°C
0
–20
*1: V
IN
(max) and I
O
(max) are restricted by the relation P
D
= (V
IN
- V
O
)
×
I
O
.
Calculate these values referring to the reference data on page 11.
*2: Refer to the Dropout Voltage parameter.
*3: For the SI-3012LU, set the input voltage to Vin
2.4 V, and secure the minimum voltage as explained in "Setting DC Input Voltage" section in Linear Regulator Application Note on
page 7.
sElectrical
Characteristics
Ratings
Parameter
Symbol
V
O
(V
ADJ
)
Conditions
V
DIF
Dropout Voltage
Conditions
Conditions
∆V
LINE
Line Regulation
Conditions
∆V
LOAD
Load Regulation
Conditions
Temperature Coefficient of
Output Voltage
Ripple Rejection
Conditions
Quiescent Circuit
Current
Circuit Current at Output OFF
Overcurrent Protection
Starting Current
*1
Control Voltage (Output ON)
*2
Control Voltage (Output OFF)
*2
V
C
Terminal
Control Current (Output ON)
Control Current (Output OFF)
I
q
Conditions
I
q
(OFF)
Conditions
I
S1
Conditions
V
C
, IH
V
C
, IL
I
C
, IH
Conditions
I
C
, IL
Conditions
0
–5
0
–5
V
C
=0V
2.0
0.8
40
V
IN
=V
O
+1V, V
C
=0V
260
V
IN
=V
O
+1V
2.0
0.8
40
V
C
=2V
0
–5
∆V
O
/∆T
a
Conditions
R
REJ
55
V
IN
=V
O
+1V ,
f=100 to 120H
Z
( V
O
=3.3V)
150
V
IN
=V
O
+1V, I
O
=0mA
V
C
=2V, R2=100kΩ
1
V
IN
=3.3V, V
C
=0V
260
V
IN
=3.3V
2.0
0.8
40
260
V
IN
=5V
55
V
IN
=3.3V, f=100 to 120H
Z
150
V
IN
=3.3V, I
O
=0mA
V
C
=2V
1
V
IN
=5V, V
C
=0V
SI-3012LU(Variable)
min.
Output Voltage
*3
1.210
typ.
1.250
max.
1.290
0.3
I
O
=100mA(V
O
=3.3V)
0.5
I
O
=250mA(V
O
=3.3V)
10
V
IN
=V
O
+1 to V
O
+5V,
I
O
=10mA( V
O
=3.3V)
20
V
IN
=V
O
+1V,
I
O
=1 to 250mA( V
O
=3.3V)
±0.3
10
V
IN
=2.5 to 5V, I
O
=10mA
20
V
IN
=3.3V, I
O
=1 to 250mA
±0.2
0.5
I
O
=250mA
10
V
IN
=4.5 to 8V, I
O
=10mA
40
V
IN
=5V, I
O
=0 to 250mA
±0.3
T
j
=0 to 100°C
55
V
IN
=5V, f=100 to 120H
Z
150
V
IN
=5V, I
O
=0mA,
V
C
=2V
1
SI-3018LU
(Under development)
min.
1.764
typ.
1.800
max.
1.836
0.5
I
O
=100mA
0.5
min.
3.234
SI-3033LU
typ.
3.300
max.
3.366
0.3
(T
a
=25°C, V
C
=2V unless otherwise specified)
SI-3050LU
min.
4.900
typ.
5.000
max.
5.100
0.3
0.5
15
V
IN
=6 to 10V, I
O
=10mA
40
mV
V
IN
=6V, I
O
=0 to 250mA
±0.3
55
dB
V
IN
=6V, f=100 to 120H
Z
150
V
IN
=6V, I
O
=0mA,
V
C
=2V
1
V
IN
=6V, V
C
=0V
260
V
IN
=6V
2.0
0.8
40
0
–5
mV/
°C
mV
V
V
Unit
V
IN
=V
O
+1V, I
O
=10mA
V
IN
=3.3V, I
O
=10mA
V
IN
=5V, I
O
=10mA
V
IN
=6V, I
O
=10mA
µ
A
µ
A
mA
V
µ
A
µ
A
*1: Is
1
is specified at the 5% drop point of output voltage V
O
on the condition that V
IN
= 3.3 V (5 V for SI-3033LU, 6 V for SI-3050LU), and I
O
= 10 mA.
*2: Output is OFF when the output control terminal (V
C
terminal) is open. Each input level is equivalent to LS-TTL level. Therefore, the device can be driven directly by LS-TTLs.
*3: Reference voltage V
ADJ
for SI-3012LU.
8
ICs
Home Index Bookmark Pages Text
Previous Next
Pages: Home Index