1-1-4 Linear Regulator ICs
SI-3000KS Series Surface-Mount, Low Current Consumption, Low Dropout Voltage
■Features
■Absolute Maximum Ratings
(Ta=25°C)
• Compact surface-mount package (SOP8)
Parameter
Symbol
Ratings
Unit
V
*1
DC Input Voltage
VIN
17
VIN
• Output current: 1.0 A
Output Control Terminal Voltage
DC Output Current
VC
V
• Compatible with low ESR capacitor
*1
IO
1.0
A
*1, *2
• Low circuit current at output OFF Iq ≤ 350 µA
Power Dissipation
PD
0.76
W
Junction Temperature
Tj
–40 to +125
–40 to +125
130
°C
(IO = 0 A, VC = 2 V)
Storage Temperature
Tstg
θj-a
θj-L
°C
• Low current consumption Iq (OFF) ≤ 1 µA (VC
Thermal Resistance (Junction to Ambient Air)
Thermal resistance (Junction to Lead (pin 7))
°C/W
°C/W
= 0 V)
22
• Low dropout voltage VDIF ≤ 0.6 V (IO = 1 A)
*1: VIN (max) and IO (max) are restricted by the relation PD = (VIN - VO) × IO. Please calculate these values referring to the
Copper laminate area vs. Power dissipation data as shown hereinafter.
*2: When mounted on a glass epoxy board of 1600 mm2 (copper laminate area 2%).
• 3 types of output voltages (2.5 V, 3.3 V, and
variable type) available
• Output ON/OFF control terminal voltage
compatible with LS-TTL
• Built-in drooping-type-overcurrent and thermal
protection circuits
■Applications
• Local power supplies
• Battery-driven electronic equipment
■Electrical Characteristics
(Ta=25°C, Vc=2 V, unless otherwise specified)
Ratings
Parameter
Input Voltage
Symbol
SI-3012KS (variable type)
SI-3025KS
typ.
SI-3033KS
typ.
Unit
min.
typ.
max.
min.
*1
max.
2.55
0.4
0.6
10
min.
*1
max.
3.366
0.4
0.6
15
V
IN
2.4
V
V
VO
(VADJ
)
1.24
1.28
1.32
0.3
0.6
10
2.45
2.50
3.234
3.300
Output Voltage
(Reference voltage VADJ for SI-3012KS)
Conditions
V
IN=3.3V, I
O
=10mA
V
IN=3.3V, IO=10mA
V
IN=5V, I
O
=10mA
=0.5A
=1A
VDIF
Conditions
I
O
=0.5A (V
O
=2.5V)
I
O=0.5A
IO
Dropout Voltage
V
Conditions
∆VOLINE
I
O
=1A (V
O
=2.5V)
I
O=1A
IO
Line Regulation
mV
mV
µA
Conditions
∆VOLOAD
V
IN=3.3 to 8V, I
O
=10mA (V
O=2.5V)
V
IN=3.3 to 8V, I
O
=10mA
VIN=5 to 10V, IO=10mA
40
=2.5V)
350
40
50
Load Regulation
Conditions
V
IN=3.3V, I
O=0 to 1A (V
O
V
IN=3.3V, I
O=0 to 1A
VIN=5V, IO=0 to 1A
I
q
350
1
350
1
Quiescent Circuit Current
Circuit Current at Output OFF
Conditions
V
IN=3.3V, I
O
=0A, V
C
=2V, R2=24kΩ
V
IN=3.3V, I
O=0A, V
C
=2V
V
IN=5V, I
O=0A, V
C=2V
I
q
(OFF)
1
µA
Conditions
V
IN=3.3V, V
C
=0V
=2.5V)
V
IN=3.3V, VC=0V
V
IN=5V, V
C=0V
∆VO
/∆Ta
0.3
0.3
0.3
Temperature Coefficient of
Output Voltage
mV/°C
dB
T
j
Conditions
T
j
=0 to 100°C (V
O
Tj
=0 to 100°C
55
IN=3.3V, f=100 to 120H
=0 to 100°C
R
REJ
55
55
Ripple Rejection
Conditions
V
IN=3.3V, f=100 to 120H
Z
(V
O
=2.5V)
V
Z
VIN=5V, f=100 to 120HZ
Overcurrent Protection
Starting Current*2
I
S1
1.2
1.2
1.2
2.0
A
Conditions
, IH
V
IN=3.3V (V
O=2.5V)
V
IN=3.3V
VIN=5V
Control Voltage (Output ON)*3
Control Voltage (Output OFF)
V
C
2.0
2.0
V
V
C
, IL
0.8
40
0.8
40
0.8
40
V
C
I
C, IH
Control Current (Output ON)
Control Current (Output OFF)
µA
Terminal
Conditions
, IL
Conditions
V
C
=2V
0
I
C
–5
0
–5
–5
0
µA
V
C
=0V
*1: Refer to the Dropout Voltage parameter.
*2: The Is1 is specified at the 5% drop point of output voltage VO on the condition that VIN = VO + 1 V, and IO = 10 mA.
*3: Output is OFF when the output control terminal VC is open. Each input level is equivalent to LS-TTL level. Therefore, the device can be driven directly by LS-TTLs.
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