SANKEN SI

●SI-3000LU Series
SI-3000LU Series
Surface-Mount, Low Current Consumption, Low Dropout Voltage Dropper Type
■Features
•
•
•
•
•
•
Compact surface-mount package (SOT-89-5)
Output current: 250 mA
Low current consumption lq (OFF) ≤ 1µA (VC = 0 V)
Low dropout voltage: VDIF≤0.5 V (at IO = 250 mA)
5 types of output voltages (Adj, 1.8 V, 2.5 V, 3.3 V, 5.0 V) available
Built-in dropping type overcurrent, thermal protection circuits
■Applications
• Auxiliary power supply for PC
• Battery-driven electronic equipment
■Absolute Maximum Ratings
Parameter
(Ta=25°C)
Symbol
Ratings
Unit
DC Input Voltage
VIN
18
V
DC Output Current
IO
250
mA
Power Dissipation
PD*1
0.75
W
Junction Temperature
Tj*2
–40 to +135
°C
Storage Temperature
Top*2
–40 to +125
°C
Thermal Resistance (Junction to Ambient Air)
θ
146
°C/W
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
■Recommended Operating Conditions
Parameter
Ratings
Symbol
min.
Unit
max.
Input Voltage
VIN
*2, *3
VO+2*1
V
DC Output Current
IO
0
250
mA
Ambient Operating Temperature
Top
–20
85
°C
*1: VIN (max) and IO (max) are restricted by the relationship PD = (VIN - VO) × IO.
Calculate these values referring to the reference data.
*2: Refer to the dropout voltage section.
*3: For the SI-3012LU, set the input voltage to at least 2.4 V, and secure the minimum voltage as explained in Setting DC Input Voltage,
Dropper Type Application Note.
●SI-3000LU Series
■Electrical Characteristics
(Ta=25°C, VC=2V unless otherwise specified)
Ratings
Parameter
Symbol
SI-3012LU
min.
VO
Output Voltage
typ. max. min.
(Under
development)
typ. max. min.
Conditions
VIN=6V, IO=10mA
0.3
0.5
0.3
0.3
0.3
0.5
0.5
10
15
IO=100mA(VO=3.3V)
IO=100mA
VIN=VO+1 to VO+5V,
IO=10mA( VO=3.3V)
IO=250mA
10
VIN=2.5 to 5V, IO=10mA
20
Conditions
VIN=VO+1V,
IO=1 to 250mA( VO=3.3V)
∆VO/∆Ta
10
VIN=3.3 to 5V, IO=10mA
20
±0.2
55
150
Overcurrent Protection
IS1
Starting Current*1
VIN=VO+1V, IO=0mA
VC=2V, R2=100kΩ
VIN=VO+1V, VC=0V
260
Conditions
150
VIN=3.3V, IO=0mA
VC=2V
VIN=3.3V, IO=0mA,
VC=2V
1
1
VIN=3.3V, VC=0V
VIN=3.3V, VC=0V
260
VIN=VO+1V
260
VIN=3.3V
VC, IH
Control Voltage (Output OFF)*2
VC, IL
0.8
0.8
IC, IH
40
40
Control Current (Output ON)
2.0
2.0
55
55
0
–5
0
–5
Conditions
dB
VIN=6V, f=100 to 120HZ
150
VIN=5V, IO=0mA,
VC=2V
150
VIN=6V, IO=0mA,
VC=2V
µA
1
µA
1
VIN=5V, VC=0V
VIN=6V, VC=0V
260
VIN=5V
mA
VIN=6V
2.0
2.0
0
0.5
0.5
V
0.8
0.8
0.8
40
40
40
µA
–5
µA
0.5
V
–5
0
–5
0
VC=0V
VO
mV
mV/°C
VC=2V
IC, IL
Output OFF Voltage
±0.3
260
2.0
Conditions
Control Current (Output OFF)
±0.3
VIN=3.3V
Control Voltage (Output ON)*2
Pin
VIN=6V, IO=0 to 250mA
55
150
1
Conditions
VIN=5V, IO=0 to 250mA
±0.25
55
Iq(OFF)
OFF Circuit Current
40
VIN=VO+1V,
VIN=3.3V, f=100 to 120HZ VIN=3.3V, f=100 to 120HZ VIN=5V, f=100 to 120HZ
f=100 to 120HZ( VO=3.3V)
Iq
Conditions
40
Tj=0 to 100°C
RREJ
Current
VIN=6 to 10V, IO=10mA
mV
VIN=3.3V, IO=1 to 250mA VIN=3.3V, IO=0 to 250mA
±0.3
Conditions
VIN=4.5 to 8V, IO=10mA
40
Conditions
Ripple Rejection
V
V
0.5
IO=250mA(VO=3.3V)
∆VLOAD
Load Regulation
VC
0.5
Unit
typ. max.
VIN=5V, IO=10mA
10
Conditions
Quiescent Circuit
typ. max. min.
(Under
development)
VIN=3.3V, IO=10mA
∆VLINE
cient of Output Voltage
typ. max. min.
SI-3050LU
VIN=3.3V, IO=10mA
0.5
Temperature Coeffi-
SI-3033LU
VIN=VO+1V, IO=10mA
VDIF
Conditions
Line Regulation
(Under
SI-3025LU development)
1.210 1.250 1.290 1.764 1.800 1.836 2.450 2.500 2.550 3.234 3.300 3.366 4.900 5.000 5.100
Conditions
Dropout Voltage
SI-3018LU
0.5
0.5
*1: Is1 is specified as the 5% drop point of output voltage VO on the condition that VIN = 3.3 V (5 V for SI-3033LU, 6 V for SI-3050LU),
and IO = 10 mA.
*2: Output is OFF when the output control pin (VC pin) is open. Each input level is equivalent to that for LS-TTL. Therefore, the device can be
driven directly by an LS-TTL circuit.
■External Dimensions
(Unit : mm)
±0.05
4.5
5)
w
e
4.2±0.05
1.5±0.05
1.5±0.05
4.3±0.05
2.5±0.05
4.7±0.05
q
1.5±0.05
4.2±0.05
0.1±0.05
±0.0
.0
( φ1
0.4±0.03
0.90±0.1
4.2±0.05
r
0.90±0.1
4.2±0.05
0.4±0.05
0.40
1.6±0.05
4.2±0.05
t
Pin Arrangement
q ADJ
w GND
e VC
r VIN
t VO
Plastic Mold Package Type
Flammability: UL94V-0
Weight: Approx. 0.05g
●SI-3000LU Series
■Block Diagram
SI-3012LU
SI-3018LU, SI-3025LU, SI-3033LU, SI-3050LU
VIN 4
5 VO
VIN 4
5 VO
VC 3
1 Adj
3
1 Adj
TSD
TSD
+
–
+
–
2 GND
REF
2 GND
REF
■Standard External Circuit
SI-3018LU, SI-3025LU, SI-3033LU, SI-3050LU
VO
5
VC
3
VDJ
1
+
2
CIN
Load
+
VIN
4
CO
GND
CO : Output capacitor (10µF or larger)
The SI-3000LU series can be operated on the circuit
even if a low ESR ceramic capacitor is used as the output
capacitor.
CIN : Input capacitor (0.1 to 10 µF)
This capacitor is required in the case of an inductive input
line or long wiring.
Settings for SI-3012LU output voltage (recommended voltage:
1.5 V to 15 V)
R1 and R2: Resistors for output setting
The output voltage can be set by connecting R1 and R2
as shown in the diagram on the left.
R2: 100 kΩ is recommended
R1=(V O–V ADJ)/(V ADJ/R2)
•
SI-3012LU
+
CIN
4
5
VO
R1
3
1
2
VIN
+
Load
VIN
R2
GND
CO
VC
■Reference Data
Copper Laminate Area vs Power Dissipation
Tj=100°C PWB size 40×40
1
• A monolithic IC is mounted. The inner frame stage is connected
to the GND pin (pin 2). Therefore, enlarging the copper laminate area leading to the GND pin achieves a heat radiation
effect.
• How to calculate the junction temperature
Measure the temperature (TC) of the GND pin (pin 2) lead
section using a thermistor, etc. Substitute this value in the
following formula and calculate the junction temperature.
T j=P D ×θ j–c+Tc ( θ j–c=5 ° C/W)
Power Dissipation PD (W)
Ta=25°C
0.9
Ta=40°C
0.8
Ta=60°C
Ta=85°C
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
10
100
Copper Laminate Area (mm2)
1000
●SI-3000LU Series
■Typical Characteristics of SI-3033LU
(Ta=25°C)
IO vs. VDIF Characteristics
Output Voltage Characteristics
0.6
Line Regulation
5
3.34
lO=0mA
3.32
0.4
0.3
0.2
lO=0mA
3
2
lO=250mA
1
0.1
50
100
150
200
250
3.30
3.28
lO=250mA
3.26
3.24
3.22
300
0
2
Output Current IO (mA)
4
6
8
0
10
Input Voltage VIN (V)
Load Regulation
Output ON/OFF Control
3.34
3.32
Output Voltage VO (V)
VIN=3.8V
3.30
8V
3.28
5V
6V
3.26
3.24
4
6
8
10
Input Voltage VIN (V)
Overcurrent Protection Characteristics
5
5
4
4
Output Voltage VO (V)
0
Dropout Voltage VDIF (V)
Output Voltage VO (V)
4
Output Voltage VO (V)
Dropout Voltage VDIF (V)
0.5
3
VIN=5V
2
1
3
VIN=3.8V
2
5V
1
8, 10V
3.22
0
50
100
150
200
250
Output Current IO (mA)
300
0
0
0.5
1.0
1.5
2.0
2.5
Output Control Voltage VC (V)
3.0
0
0
100
200
300
Output Current IO (mA)
400