ETC SI-3018KS

●SI-3000KS Series
SI-3000KS Series
Surface-Mount, Low Current Consumption, Low Dropout Voltage Dropper Type
■Features
•
•
•
•
•
•
•
•
•
Compact surface-mount package (SOP-8)
Output current: 1.0 A
Low-ESR capacitor can be used.
Low current consumption Iq ≤ 350 µA (IO = 0 A, VC = 2 V)
Low current consumption Iq (OFF) ≤ 1 µA (VC = 0 V)
Low dropout voltage VDIF ≤ 0.6 V (IO = 1 A)
4 types of output voltages (1.8 V, 2.5 V, 3.3 V, and variable type) available
Output ON/OFF control pin compatible with LS-TTL
Built-in dropping type overcurrent, thermal protection circuits
■Applications
• Local power supplies
• Battery-driven electronic equipment
■Absolute Maximum Ratings
Parameter
(Ta=25°C)
Ratings
Unit
VIN*1
17
V
Output Control Pin Voltage
VC
VIN
V
Output Current
IO*1
1.0
A
DC Input Voltage
Symbol
PD*1, *2
0.76
W
Junction Temperature
Tj
–40 to +125
°C
Storage Temperature
Tstg
–40 to +125
°C
Thermal Resistance (Junction to Ambient Air)
Rth(j-a)*
130
°C/W
Thermal resistance (Junction to Lead (pin 7))
Rth(j-l)
22
°C/W
Power Dissipation
*1: VIN (max) and IO (max) are restricted by the relationship PD = (VIN - VO) x IO. Calculate these values referring to the
power dissipation vs. copper area data shown in this document.
*2: When mounted on a glass epoxy board measuring 1600 mm2 (with 2% copper area).
●SI-3000KS Series
■Electrical Characteristics
(Unless otherwise specified, Ta = 25°C, Vc = 2 V)
Ratings
Parameter
SI-3012KS (variable type)
Symbol
min.
Input Voltage
Output Voltage
2.4
VO (VREF)
1.24
Conditions
min.
1.28
1.32
SI-3025KS
max.
1.800
1.836
Line Regulation
VIN=3.3V, IO=0 to 1A (VO=2.5V)
Iq
Quiescent Circuit Current
Conditions
of Output Voltage
Conditions
Conditions
IO=1A
15
40
40
VIN=2.5V, IO=0 to 1A
VIN=3.3V, IO=0 to 1A
50
VIN=5V, IO=0 to 1A
350
VIN=3.3V, IO=0A, VC=2V
1
350
VIN=5V, IO=0A, VC=2V
1
1
VIN=3.3V, VC=0V
VIN=5V, VC=0V
±0.3
±0.3
±0.3
±0.3
Tj=0 to 100°C
Tj=0 to 100°C
Tj=0 to 100°C
55
55
55
55
VIN=3.3V, f=100 to 120HZ
VIN=3.3V, f=100 to 120HZ
VIN=5V, f=100 to 120HZ
1.2
IS1
Starting Current*2
V
0.6
VIN=5 to 10V, IO=10mA
VIN=2.5V, VC=0V
Conditions VIN=3.3V, f=100 to 120HZ (VO=2.5V)
Overcurrent Protection
IO=0.5A
VIN=3.3 to 8V, IO=10mA
VIN=2.5V, IO=0A, VC=2V
1.2
VIN=3.3V (VO=2.5V)
1.2
VIN=2.5V
VC, IH
VC, IL
0.8
0.8
0.8
0.8
IC, IH
40
40
40
40
VC PIN Control Current (Output ON)
2.0
Conditions
–5
0
–5
0
–5
Conditions
Output OFF Voltage
2.0
VC=2V
IC, IL
Control Current (Output OFF)
0
–5
0
0.5
0.5
0.5
µA
V
µA
µA
VC=0V
VO(OFF)
µA
A
VIN=5V
Control Voltage (Output OFF)
2.0
mV
dB
1.2
VIN=3.3V
mV
mV/°C
Control Voltage (Output ON)*3
2.0
V
0.4
Tj=0 to 100°C (VO=2.5V)
RREJ
Ripple Rejection
3.366
VIN=2.5 to 6V, IO=10mA
VIN=3.3V, VC=0V
∆VO/∆Ta
Temperature Coefficient
3.300
VIN=5V, IO=10mA
10
1
Iq(OFF)
Off Circuit Current
3.234
IO=1A
350
VIN=3.3V, IO=0A, VC=2V, R2=24kΩ
max.
10
350
Conditions
Unit
typ.
0.6
IO=1A
40
Conditions
2.55
IO=0.5A
10
∆VOLOAD
2.50
VIN=3.3V, IO=10mA
0.6
IO=1A (VO=2.5V)
min.
*1
2.45
–
Conditions VIN=3.3 to 8V, IO=10mA (VO=2.5V)
Load Regulation
SI-3033KS
max.
0.4
0.6
∆VOLINE
typ.
–
IO=0.5A (VO=2.5V)
Conditions
min.
VIN=2.5V, IO=10mA
0.3
Conditions
typ.
*1
1.764
VIN=3.3V, IO=10mA
VDIF
Dropout Voltage
SI-3018KS
max.
*1
VIN
(reference voltage for SI-3102KS)
typ.
0.5
V
*1 : Refer to the description on the dropout voltage.
*2 : The Is1 is specified as 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 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)
5.1±0.4
1.27
7
6
5
1
2
3
4
6.2
4.4±0.2
8
0.15+0.1
–0.05
0.5±0.1
0.4±0.1
10
°
1.27
1.5±0.1
0.12 M
0.05±0.05
0.10
0.4±0.1
1.55±0.15
0~
0.995max.
Pin Arrangement
q VC
w VIN
e VO
r Sence (ADJ for SI-3012KS)
t GND
y GND
u GND
i GND
Plastic Mold Package Type
Flammability: UL 94V-0
Weight: Approx. 0.1 g
●SI-3000KS Series
■Block Diagram
●SI-3012KS
●SI-3018KS, SI-3025KS, SI-3033KS
VIN 2
3 VOUT
VIN 2
VC 1
4 ADJ
VC 1
3 VOUT
4
Sense
TSD
-
TSD
-
+
+
8
8
7
7
6
REF
6
REF
5 GND
5 GND
■Standard Circuit Connection Diagram
●SI-3012KS
●SI-3018KS, SI-3025KS, SI-3033KS
VIN
2
VO
3
+
CIN
VC GND ADJ
1
4
5 to 8
VIN
2
R1
CO
Load
R2
CIN
VO
3
sense
VC GND 4
1
5 to 8
CO
R2
R1, R2: Output voltage setting resistors
The output voltage can be set by connecting R1 and R2 as shown above.
The recommended value of R2 is 24 kΩ.
R1=(VO–VADJ)÷(VADJ/R2)
CIN : Input capacitor (22 µF or larger)
This capacitor is necessary if an inductance is included in the input line or if the wiring length is long.
CO : Output capacitor (22 µF or larger)
The SI-3000KS series designed for use with very low-ESR ceramics output capacitor.
When using the electrolytic capacitor, the SI-3000KS series may oscillate at a low temperature.
Load
●SI-3000KS Series
■Example of Solder Pattern Design
L
L
b2
e1
l2
e1
B2
B1
L
b
e
e
α
e
e
Symbol
e1
e
α
β1
β2
L
b2
l2
Dimensions (mm)
5.72
1.27±0.15
0.2
0.2 to 0.5
0.2
0.6
0.76
L+β1+β2
e
e
*1
GND pattern
b2
8
7
6
5
l2
(Reference value conforming to EIAJ
Standard ED-7402-1)
e1
*1 The inner frame stage on which a monolithic IC is mounted is
directly connected to the GND pins (pins 5 through 8). By
expanding the area of the copper connected to the GND pins,
the heat radiation can be improved. It is recommended to
design the solder pattern by opening the insulation film of the
solder patterns of pins 5, 6, 7, and 8, on the wide GND
pattern as shown in Figure 1.
1
2
e
4
3
e
e
Figure 1
■Reference Data
Thermal resistance vs. Copper area
140
Power dissipation vs. Copper area
Area of PC board : 40×40mm
1.2
Tj=100°C Area of PC board : 40×40mm
120
Power dissipation PD (W)
Thermal resistance θ j-a (°C/W)
Ta=25°C
1
100
80
Ta=50°C
Ta=80°C
0.8
0.6
0.4
60
0.2
40
10
100
1000
Copper area (mm2)
0
10
100
Copper area (mm2)
1000
• Calculating junction temperature
Measure the temperature TL of the lead of the GND pin (pin 7) by using a thermocouple, and substitute the
measured value into the following expression to calculate the junction temperature.
Tj=PD × θj–L + TL
( θj–L = 22°C/W)
●SI-3000KS Series
■Taping Specifications
Carrier tape
Surface resistance of embossed tape: 100 kΩ maximum (among 10 pockets)
Leader
Vacant seal section
IC compartments
Vacant seal section
Cover tape
(Unit : mm)
Trailer
160 to 240mm
(About 25 pockets)
160 to 240mm
(About 25 pockets)
1,000PCS
(1,000 pockets)
400 to 600mm
4
2
8
Tape draw-out direction
φ1.55
t=3
5.5
12
5.75
5.55
(4.75)
2.1
φ2
7.0
6.7
60
°
Hole
Hole
Hole
Hole
φ 60
φ 180
Hole
0
13±0.3
15.4±1.0
Expanded view of center
2
5
.5
10
4
Hole
Hole
Hole
Hole
5
R2
11.9
Hole
φ1
φ
R2 3
2
φ13±0.2
B
30°
°
φ1
3
60
φ3
Hole
1.5
Reel: Number of packed
products: 1000
2
φ
10
Hole
60
°
3
60
°
●SI-3000KS Series
■Typical Characteristics Examples of SI-3012KS and SI-3025KS
(Ta=25°C) *Vout=2.5 V for SI-3012KS (RS=24 kΩ)
Dropout voltage
Rise characteristics
1
Line regulation
3
2.54
2.52
0.8
0.6
0.4
Output voltage V
Output voltage V
Dropout voltage V
2.50
2
IO=0 to 1A
0.25A step
1
2.48
2.46
IO=0 to 1A
0.25A step
2.44
0.2
2.42
0
0.2
0.4
0.6
Output current A
0.8
1
0
Load regulation
1
2
Input voltage V
3
4
2.40
0
Overcurrent protection characteristics
4
6
Input voltage V
8
10
Input voltage vs. Quiescent current
600
3
2.52
2
IO=0A
VC=2V
500
2.48
VIN=3.3V
4V
5V
6V
8V
2.46
2.44
Quiescent Current µ A
Output voltage V
Output voltage V
2.50
2
VIN=3.3V
4V
5V
6V
1
2.42
2.40
0
400
300
200
100
0.2
0.4
0.6
Output current A
0.8
0
1
Circuit current
0.2
0.4
0.6 0.8
1 1.2
Output current A
1.4
1.6
0
Control terminal voltage vs. Output voltage
4
6
8 10 12
Input voltage V
14
16
18
Control terminal voltage vs. Control terminal current
3
60
2
30
IO=1A
0.75A
20
Control terminal current µ A
40
Output voltage V
GND current mA
25
2
IO=0A
1
0.5A
2
4
Input voltage V
15
10
5
0A
0.25A
0
20
6
8
0
0.5
1
1.5
Control ternimal voltage V
2
0
1
2
3
Control terminal voltage V
4
●SI-3000KS Series
■Typical Characteristics Examples of SI-3033KS
(Ta=25°C)
Dropout voltage
Rise characteristics
1
Line regulation
3.34
4
3.32
0.8
0.6
0.4
3.30
2
Output voltage V
Output voltage V
Dropout voltage V
3
IO=0 to 1A
0.25A step
3.28
3.26
3.24
IO=0 to 1A
0.25A step
1
0.2
3.22
0
0.2
0.4
0.6
Output current A
0.8
1
0
Load regulation
1
2
Input voltage V
3
3.20
0
4
Overcurrent protection characteristics
10
12
Input voltage vs. Quiescent current
3.32
IO=0A
VC=2V
500
Output voltage V
3.28
3.26
VIN=4V
5V
6V
8V
3.24
3.22
3.20
0
0.2
Quiescent Current µ A
3
3.30
Output voltage V
4
6
8
Input voltage V
600
4
3.34
2
VIN=4V
5V
6V
2
1
400
300
200
100
0.4
0.6
Output current A
0.8
0
1
Circuit current
0.2
0.4
0.6 0.8
1
1.2
Output current A
1.4
1.6
0
Control terminal voltage vs. Output voltage
60
2
4
6
8
10 12
Input voltage V
14
16
18
Control terminal voltage vs. Control terminal current
30
4
Control terminal current µ A
25
40
Output voltage V
GND current mA
3
IO=1A
0.75A
20
0A
IO=0A
2
1
0.5A
20
15
10
5
0.25A
0
2
4
Input voltage V
6
8
0
0.5
1
1.5
Control terminal voltage V
2
0
1
2
3
Control terminal voltage V
4