1-1-4 Linear Regulator ICs
SI-3000LLSL Series
Surface-Mount, Low Current Consumption, Low Dropout Voltage
■Features
• Low input voltage (1.3V) and low output
voltage (1.0V)
• Compact surface-mount package (SOP8)
• Low dropout voltage: V
DIF
≤
0.3V (at I
O
= 1.5A)
• Built-in overcurrent, input-overvoltage and
thermal protection circuits
• Built-in ON/OFF function (OFF state circuit
current: 1
µ
A max.)
• Compatible with low ESR capacitors
■Absolute
Maximum Ratings
Parameter
DC Input Voltage
DC Bias Voltage
Output Control Terminal Voltage
DC Output Current
Power Dissipation
Junction Temperature
Operating Ambient Temperature
Storage Temperature
Thermal Resistance (Junction to Lead (Pin 8))
Thermal Resistance (Junction to Ambient Air)
Symbol
V
IN
V
B
V
C
I
O
P
D*1
T
j
T
op
T
stg
Ratings
10
10
V
IN
1.5
1.1
–30 to +125
–30 to +100
–30 to +125
36
100
Unit
(T
a
=25°C)
V
V
V
A
W
°C
°C
°C
°C
/W
°C
/W
θ
(j-L)
θ
(j-a)*1
*1: When mounted on glass-epoxy board of 40
×
40mm (copper laminate area 100%).
■Applications
• On-board local power supply
• For stabilization of the secondary-side output voltage of switching power supplies
■Recommended
Operating Conditions
Ratings
Parameter
Input Voltage
Bias Voltage
Output Current
Operating Ambient Temperature
Symbol
V
IN
V
B
I
O
T
op
SI-3010LLSL
1.4 to 3.6
*1
3.3 to 5.5
0 to 1.5
*1
–20 to +85
*1
Unit
V
V
A
°C
*1: V
IN
(max) and I
O
(max) are restricted by the relation P
D
= (V
IN
- V
O
)
×
I
O
.
■Electrical
Characteristics
Parameter
Symbol
min.
Reference Voltage
Line Regulation
Load Regulation
Dropout Voltage
Quiescent Circuit Current
Circuit Current at Output OFF
Temperature Coefficient of
Output Voltage
Overcurrent Protection Starting
Current
*1
Control Voltage (Output ON)
*2
Control Voltage (Output OFF)
V
C
Terminal
Control Current (Output ON)
Control Current (Output OFF)
V
ADJ
Conditions
∆V
OLINE
Conditions
∆V
OLOAD
Conditions
V
DIF
Conditions
I
q
Conditions
I
q (OFF)
Conditions
∆V
O
/∆T
a
Conditions
I
S1
Conditions
V
C
, IH
V
C
, IL
I
C
, IH
Conditions
I
C
, IL
Conditions
2
1.6
0.980
typ.
(T
a
=25°C, V
C
=2V, V
IN
=1.8V, V
B
=3.3V, V
O
=1.5V, unless otherwise specified)
Ratings
SI-3010LLSL
max.
1.020
10
V
IN
=1.7 to 2.5V, I
O
=10mA
30
V
IN
=1.8V, I
O
=0 to 1.5A
0.3
I
O
=1.0A
500
I
O
=0A, R
2
=10kΩ
1
V
C
=0V
±0.2
T
j
=0 to 100°C
V
IN
=1.8V, V
B
=3.3V
0.8
50
V
C
=2.7V
10
V
C
=0.4V
800
V
mV
mV
V
1.000
I
O
=10mA
Unit
µ
A
µ
A
mV/
°C
A
V
V
µ
A
µ
A
*1: I
S1
is specified at the 5% drop point of output voltage V
O
on the condition that V
IN
= overcurrent protection starting current, 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.
76
ICs
SI-3000LLSL Series
■External
Dimensions (SOP8)
5.1
±0.4
1.27
0.4
±0.1
0.15
+0.1
–0.05
(unit : mm)
8
7
6
5
1
2
3
4
Pin Assignment
q
V
O
w
ADJ
e
V
B
r
V
C
t
GND
y
GND
u
V
IN
i
V
IN
Plastic Mold Package Type
Flammability: UL94V-0
Product Mass: Approx. 0.1g
0.5
±0.1
4.4
±0.2
0.05
±0.05
1.55
±0.15
1.5
±0.1
0t
o1
0
°
1.27
0.995max.
0.10
0.4
±0.1
0.12 M
■Typical
Connection Diagram/Block Diagram
C
IN
, C
B
: Input and bias capacitors (Approx. 0.1 to 10
µ
F)
Required when the input line contains inductance or when the
wiring is long.
C
O
: Output capacitor (47
µ
F or larger)
SI-3010LLSL is designed to use a low ESR capacitor (such as
a ceramic capacitor) for the output capacitor. The recom-
mended ESR value for an output capacitor is 500mΩ or less
(at room temperature).
R1, R2: Output voltage setting resistors
The output voltage can be set by connecting R1 and R2 as
shown at left.
The recommended value for R2 is 10kΩ.
6.2
±0.3
V
IN
+
7
8
R1
V
OUT
1
C
SS
R1
OCP(2)
ADJ
2
R2
6
5
GND
+
+
C
IN
V
B
3
REF
+
Drive
-
AMP1
TSD
OCP
C
O
C
B
V
C
ON/OFF
-
4
+
-
Open:OFF
Low: OFF
High: ON
R1= (V
O
–V
ADJ
) / (V
ADJ
/R2)
C
SS
:Soft start capacitor
The rising time of the output voltage can be set by connecting
C
SS
between V
OUT
and ADJ.
■Reference
Data
Copper Laminate Area - Power Dissipation
1.2
Ta=25°C
1
Pd (W)
0.8
0.6
Ta=50°C
Ta=80°C
0.4
0.2
0
10
100
Copper Laminate Area (mm
2
)
1000
ICs
77
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