1-1-1 Linear Regulator ICs
SI-3000ZD Series
Surface-Mount, Low Dropout Voltage Linear Regulator ICs
sFeatures
• Compact surface-mount package (TO263-5)
• Output current: 3.0A
• Low dropout voltage: V
DIF
0.6V (at I
O
= 3.0A)
• Low circuit current at output OFF: Iq (OFF)
1
µ
A
• Built-in overcurrent and thermal protection
circuits
sAbsolute
Maximum Ratings
Parameter
DC Input Voltage
Output Control Terminal Voltage
DC Output Current
Power Dissipation
Junction Temperature
Operating Ambient Temperature
Storage Temperature
Thermal Resistance (Junction to Ambient Air)
Thermal Resistance (Junction to Case)
Symbol
V
IN*1
V
C
I
O*1
P
D*3
T
j
T
op
T
stg
Ratings
10
6
3.0
3
–30 to +125
–30 to +85
–40 to +125
33.3
3
Unit
V
V
A
W
°C
°C
°C
°C/W
°C/W
(T
a
=25°C)
sApplications
• Secondary stabilized power supply (local
power supply)
θ
j-a
θ
j-c
sRecommended
Operating Conditions
Parameter
Input Voltage
Output Current
Operating Ambient Temperature
Operating Junction Temperature
Output Voltage Variable Range
Symbol
V
IN
I
O
T
op (a)
T
op (j)
V
OADJ
Ratings
*2
Unit
V
A
°C
°C
V
Remarks
to
6
*1
0 to 3
–20 to +85
–20 to +100
1.2 to 5
Only for SI-3011ZD. Refer to the block diagram.
*1: V
IN
(max) and I
O
(max) are restricted by the relation P
D
= (V
IN
- V
O
)
×
I
O
.
*2: Set the input voltage to 2.4V or higher when setting the output voltage to 2.0V or lower (SI-3011ZD).
*3: When mounted on glass-epoxy board of 40
×
40mm (copper laminate area 100%).
sElectrical
Characteristics
Ratings
Parameter
Output Voltage
(Reference Voltage V
ADJ
for SI-3011ZD)
Line Regulation
Load Regulation
Dropout Voltage
Quiescent Circuit Current
Circuit Current at Output OFF
Temperature Coefficient
of Output Voltage
Ripple Rejection
Overcurrent Protection Starting Current
*2
*4
(T
a
=25°C, V
C
=2V unless otherwise specified)
SI-3011ZD (Variable type)
min.
typ.
1.100
V
IN
=V
O
+1V, I
O
=10mA
10
V
IN
=3.3 to 5V, I
O
=10mA (V
O
=2.5V)
40
V
IN
=3.3V, I
O
=0 to 3A (V
O
=2.5V)
0.6
I
O
=3A (V
O
=2.5V)
1
1.5
1
V
IN
=V
O
+1V, V
C
=0V
±0.3
T
j
=0 to 100°C
60
V
IN
=V
O
+1V, f=100 to 120H
Z
, I
O
=0.1A
3.2
V
IN
=V
O
+1V
2
0.8
100
V
C
=2.7V
–5
0
V
C
=0V
–5
V
C
=2.7V
0
V
C
=0V
–5
2
0.8
100
V
C
=2.7V
0
V
C
=0V
3.2
V
IN
=3.3V
2
0.8
100
V
IN
=3.3V, V
C
=0V
±0.3
T
j
=0 to 100°C
60
V
IN
=3.3V, f=100 to 120H
Z
, I
O
=0.1A
3.2
V
IN
=5V
V
IN
=V
O
+1V, I
O
=0A, V
C
=2V
I
O
=3A
1
V
IN
=3.3V, I
O
=0A, V
C
=2V
1
V
IN
=5V, V
C
=0V
±0.3
T
j
=0 to 100°C
60
V
IN
=5V, f=100 to 120H
Z
, I
O
=0.1A
1.5
V
IN
=3.3V, I
O
=0 to 3A
0.6
I
O
=3A
1
V
IN
=5V, I
O
=0A, V
C
=2V
1
1.5
V
IN
=3.3 to 5V, I
O
=10mA
40
V
IN
=5V, I
O
=0 to 3A
0.6
max.
1.122
min.
2.45
1.078
SI-3025ZD
typ.
2.50
V
IN
=3.3V, I
O
=10mA
10
max.
2.55
min.
3.234
SI-3033ZD
typ.
3.300
V
IN
=5V, I
O
=10mA
10
V
IN
=4.5 to 5.5V, I
O
=10mA
40
max.
3.366
V
mV
mV
V
mA
Unit
Symbol
V
O
(V
ADJ
)
Conditions
∆V
OLINE
Conditions
∆V
OLOAD
Conditions
V
DIF
Conditions
I
q
Conditions
I
q
(OFF)
Conditions
∆V
O
/∆T
a
Conditions
R
REJ
Conditions
I
S1
Conditions
V
C
, IH
V
C
, IL
I
C
, IH
Conditions
I
C
, IL
Conditions
µ
A
mV/
°C
dB
A
V
Control Voltage (Output ON)
*3
Control Voltage (Output OFF)
*3
V
C
Control Current(Output ON)
Terminal
Control Current(Output OFF)
µ
A
µ
A
*1:
*2:
*3:
*4:
Set the input voltage to 2.4V or higher when setting the output voltage to 2.0V or lower.
I
S1
is specified at the –5% drop point of output voltage V
O
under the condition of Output Voltage parameter.
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.
These products cannot be used for the following applications because the built-in foldback-type overcurrent protection may cause errors during start-up stage.
(1) Constant current load (2) Positive and negative power supply (3) Series-connected power supply (4) V
O
adjustment by raising ground voltage
24
ICs
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