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qSI-3000LSA Series
SI-3000LSA Series
Surface-Mount, Low Current Consumption, Low Dropout Voltage Dropper Type
sFeatures
* * * * Compact surface-mount package (SOP-8) Output current: 1 A Low current consumption: Iq(OFF) ( 1 A (VC = 0 V) Low dropout voltage: VDIF0.8 V (at IO = 1 A) VDIF 1.2 V (IO = 1 A) for SI-3018LSA * 4 types of output voltages (1.8 V, 2.5 V, 3.3 V, 5.0 V) available * Output ON/OFF control compatible with LS-TTL * Built-in foldback overcurrent, thermal protection circuits
sApplications
* Auxiliary power supply for PC * Battery-driven electronic equipme
sAbsolute Maximum Ratings
Parameter DC Input Voltage DC Output Current Power Dissipation Junction Temperature Ambient Operating Temperature Storage Temperature Thermal Resistance (Junction to Lead (pin 8)) Thermal Resistance (Junction to Ambient Air) Symbol VIN IO PD1*1 PD2*2 Tj*3 Top Tstg Ratings 16 1 1.16 1.1 -30 to +150 -30 to +150 -30 to +150 36 100 Unit V A W W C C C C/W C/W
(Ta=25C)
j-I j-a *2
*1: When mounted on glass-epoxy board 56.5 x 56.5 mm (copper laminate area 100%) *2: When mounted on glass-epoxy board 40 x 40 mm (copper laminate area 100%). *3: Thermal protection circuits may operate if the junction temperature exceeds 135C
sRecommended Operating Conditions
Parameter DC Input Voltage Range DC Output Current Range Operating Junction Temperature Ambient Operating Temperature Symbol SI-3018LSA VIN IO Tjop Taop 3.1 to 3.5*1
*2
Ratings SI-3025LSA to 3.5*1 0 to 1 -20 to +125 -30 to +85 SI-3033LSA
*2
Unit SI-3050LSA
*2
to 5.2*1
to 8.0
V A C C
*1: VIN (max) and IO (max) are restricted by the relationship PD = (VIN - VO) x IO. Calculate these values referring to the reference data. *2: Refer to the dropout voltage section.
qSI-3000LSA Series
sElectrical Characteristics
Ratings Parameter Symbol VO Conditions VDIF Dropout Voltage Conditions Conditions Line Regulation Load Regulation Temperature Coefficient of Output Voltage Ripple Rejection Quiescent Circuit Current OFF Circuit Current Overcurrent Protection Starting Current*1,3
Control Voltage (Output ON)*2 Control Voltage (Output OFF)*2
(Ta=25C, VC=2V unless otherwise specified)
SI-3018LSA min. typ. 1.800 - - 0.6 1.2 10 20 max. 1.836 1.764
SI-3025LSA min. 2.450 typ. 2.500 max. 2.550 0.4 IO0.5A 0.8 IO1A 2 10 0.3 VIN=3.3V, IO=5mA, Tj=0 to 100C 57 VIN=3.3V, f=100 to 120HZ 1.7 VIN=3.3V, IO=0A 1 1 VIN=3.3V, IO=0A, VC=0V 1.2 VIN=3.3V 2.0 0.8 0.8 40 0 80 VC=2V -5 VC=0V 0.5 0.5 VIN=3.3V, IO=0A 2.0 1.2 2.5 2.5 10 20
SI-3033LSA min. 3.234 typ. 3.300 max. 3.366 0.4 IO0.5A 0.8 3 10 0.3 VIN=5V, IO=5mA, Tj=0 to 100C 55 VIN=5V, f=100 to 120HZ 1.7 VIN=5V, IO=0A 1 VIN=5V, IO=0A, VC=0V VIN=5V 2.0 0.8 40 0 80 -5 0.5 VIN=5V, IO=0A 1.2 2.5 10 20 min. 4.90
SI-3050LSA typ. 5.00 max. 5.10 0.4 IO0.5A 0.8 15 VIN=6 to 7V, IO=0.3A 30 VIN=6.5V, IO=0 to 1A 0.5 VIN=6.5V, IO=5mA, Tj=0 to 100C 55 VIN=6.5V, f=100 to 120HZ 1.7 VIN=6.5V, IO=0A 1 VIN=6.5V, IO=0A, VC=0V VIN=6V 0.8 40 0 80 -5 0.5 VIN=6.5V, IO=0A 2.5
Unit
Output Voltage
VIN=3.3V, IO=0.5A
VIN=3.3V, IO=0.5A
VIN=5V, IO=0.5A
VIN=6.5V, IO=0.5A
V
V
VLINE Conditions VOLOAD Conditions VO/Ta RREJ Conditions Iq Conditions Iq(OFF) Conditions IS1 Conditions VC, IH VC, IL IC, IH Conditions IC, IL Conditions VO Conditions 2.0 1.2
2 10 0.3 60
VIN=3.1 to 3.5V, IO=0.3A VIN=3.3V, IO=0 to 1A
VIN=3.1 to 3.5V, IO=0.3A VIN=3.3V, IO=0 to 1A
VIN=4.5 to 5.5V, IO=0.3A VIN=5V, IO=0 to 1A
mV mV mV/C dB mA
Conditions VIN=3.3V, IO=5mA, Tj=0 to 100C VIN=3.3V, f=100 to 120HZ 1.7 VIN=3.3V, IO=0A VIN=3.3V, IO=0A, VC=0V VIN=3.3V
A
A V
VC Pin
Control Current (Output ON)
40 0
80 -5
A A
V
Control Current (Output OFF)
Output OFF Voltage
VIN=3.3V, IO=0A
*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-3033LSA), and IO = 0.5 A. *2: Output is OFF when the output control terminal VC is open. Each input level is equivalent to that for LS-TTL. Therefore, it is possible to be driven directly by an LS-TTL circuit. The SI-3000LSA series employs a foldback-type overcurrent protection circuit. *3: In applications in which a certain current is required for start-up, this circuit may cause a start-up error, and therefore the SI-3000LSA series is not recommended for use in such applications. (1) Constant current load (2) Dual polarity power supply (3) Series power supply (4) VO adjustment by raising ground voltage
sExternal Dimensions
5.10.4 1.27 0.4 0.1 0.15+0.1 -0.05 0.5 0.1
(Unit : mm)
8
7
6
5
1
2
3
4
1.550.15
1.5 0.1
0~
0.995max.
10
1.27
Pin Arrangement q VIN w NC (Leave open) e VIN r VC t GND y GND u VO i VO Plastic Mold Package Type Flammability: UL94V-0 Weight: Approx. 0.1g
0.10 0.4 0.1 0.12 M
0.05 0.05
6.2 0.3
4.40.2
qSI-3000LSA Series
sBlock Diagram
VIN 1
8
VO
NC 2
+ -
7 VO
VIN 3
TSD
6
GND
VC 4
5
GND
sStandard External Circuit
CO : Output capacitor (22 F or larger) CIN : Input capacitor (0.1 to 10 F) This capacitor is required in the case of an inductive input line or long wiring. Tantalum capacitors are recommended for C1 and C0, particularly at low temperatures. * Leave pin 2 open.
VIN CIN
1 2 3 4
8 7 6 5 GND
VO
VIN CO VC
sReference Data
PWB Copper Laminate Area vs. Junction to Ambient Air Thermal Resistance
150 140 130 0.8 1.2
Load
+
+
Allowable Output Current (vs. VIN-VOUT Voltage Difference) VIN-IO max
Tj = 120C (20% derating of 150C)
1.0
PWB (glass-epoxy, 40x40mm) 160mm (40x40) mm
Iout (max) (A)
j-a (C/W)
120 110 100 90
j-a=100C/W
0.6
0.4
Ta=25C Ta=85C
0.2 80 70 100 0 1000 5000
2)
1
2
3
4
Copper Laminate Area (mm
VIN-VOUT Voltage Difference (V)
The inner frame stage, on which the PTr is mounted, is directly connected to the VOUT pin. Therefore, enlarging the copper laminate area achieves a heat radiation effect of the VOUT pin.
qSI-3000LSA Series
sTypical Characteristics of SI-3018LSA
(Ta=25C)
IO vs. VDIF Characteristics
1.0
Load Regulation
1.84
Output ON/OFF Control
3 VIN=3.3V IO=5mA
1.82
Dropout Voltage VDIF (V)
Output Voltage VO (V)
0.8
1.80 VIN=8V 5V 3.2V
Output Voltage VO (V)
0.6 0.8 1.0
2
0.6
1.78
0.4
1.76
1
0.2
1.74
0 0
0.2
0.4
0.6
0.8
1.0
1.72 0
0.2
0.4
0 0
1
2
3
Output Current IO (A)
Output Current IO (A)
Output ON/OFF Control Voltage VC (V)
Output Voltage Characteristics
3
Overcurrent Protection Characteristics
2
Output ON/OFF Control Current
60 VIN=3.3V IO=5mA 50
Output Voltage VO (V)
Output Voltage VO (V)
1.5 VIN=5V
=3 .2V
2
Terminal Control Current lC ( A)
2
VIN=
6V
40
IO=0A-1A 0.25A step 1
1
VIN
30
20
0.5
10
0 0
1
2
3
4
5
0 0
0.5
1
1.5
0 0
1
2
3
Input Voltage VIN (V)
Output Current IO (A)
Output Control Voltage VC (V)
Line Regulation
1.84
Thermal Protection Characteristics
3 VIN=3.3V IO=5mA
Circuit Current
20
1.82
Output Voltage VO (V)
Output Voltage VO (V)
Ground Current IG (mA)
15 IO=1A-0A 0.25A step 10
1.80 IO=1A 0.75A 0.5A 0.25A 0A
2
1.78
1.76
1
5
1.74
1.72 0
2
4
6
8
10
0 0
20
60
100
140
180
Input Voltage VIN (V)
Case Temperature TC (C)
0 0
2
4
6
8
10
Input Voltage VIN (V)
[Note on Thermal Protection] The thermal protection circuit is intended for protection against heat during instantaneous short-circuiting. Its operation is not guaranteed for continuous heating conditions such as short-circuiting over extended periods of time.
qSI-3000LSA Series
sTypical Characteristics of SI-3025LSA
(Ta=25C)
IO vs. VDIF Characteristics
1.0
2.58
Load Regulation
3
Output ON/OFF Control
Dropout Voltage VDIF (V)
0.8
2.56
Output Voltage VO (V)
2.54
0.6
VIN
2.52
=1
0V
8V
5V
Output Voltage VO (V)
2 VIN=3.3V IO=5mA 1
0.4
2.50
3.2V
0.2
2.48
0 0
0.2
0.4
0.6
0.8
1.0
2.46 0
0.2
0.4
0.6
0.8
1.0
0 0
1
2
3
Output Current IO (A)
Output Current IO (A)
Output ON/OFF Control Voltage VC (V)
Output Voltage Characteristics
3
Overcurrent Protection Characteristics
3
60
Output ON/OFF Control Current
VIN=3.3V IO=5mA 50
2 IO=0A-1A 0.25A step
Terminal Control Current lC ( A)
Output Voltage VO (V)
Output Voltage VO (V)
VIN=3.2V
5V
6V
2
40
30
1
1
20
10
0 0
1
2
3
4
5
0 0
0.5
1
1.5
2
0 0
1
2
3
Input Voltage VIN (V)
Output Current IO (A)
Output Control Voltage VC (V)
Line Regulation
2.58
Thermal Protection Characteristics
3
Circuit Current
20
2.56
Ground Current IG (mA)
Output Voltage VO (V)
Output Voltage VO (V)
2.54
2.52
IO=1A 0.75A 0.5A 0.25A 0A
15
2 VIN=3.3V IO=5mA 1
10
IO=1A-0A 0.25A step
2.50
5
2.48
2.46 0
2
4
6
8
10
12
0 0
20
60
100
140
180
Input Voltage VIN (V)
0 0
2
4
6
8
10
Case Temperature TC (C)
Input Voltage VIN (V)
[Note on Thermal Protection] The thermal protection circuit is intended for protection against heat during instantaneous short-circuiting. Its operation is not guaranteed for continuous heating conditions such as short-circuiting over extended periods of time.
qSI-3000LSA Series
sTypical Characteristics of SI-3033LSA
(Ta=25C)
IO vs. VDIF Characteristics
1.0
Load Regulation
3.34
Output ON/OFF Control
4
Dropout Voltage VDIF (V)
0.8
3.32
Output Voltage VO (V)
3.30
Output Voltage VO (V)
V VIN=6 5V
3 VIN=5V IO=5mA 2
0.6
4.3V 3.28
0.4
3.26
0.2
1
3.24
0 0
0.2
0.4
0.6
0.8
1.0
3.22 0
0.2
0.4
0.6
0.8
1.0
0 0
1
2
3
Output Current IO (A)
Output Current IO (A)
Output ON/OFF Control Voltage VC (V)
Output Voltage Characteristics
4
Overcurrent Protection Characteristics
4
Output ON/OFF Control Current
60 VIN=5V IO=5mA 50
Output Voltage VO (V)
3
Output Voltage VO (V)
3
Terminal Control Current lC ( A)
2
40
2 IO=0A-1A 0.25A step 1
2
5V 6V
V
1
= IN
4.
3V
30
20
10
0 0
1
2
3
4
5
6
0 0
0.5
1
1.5
0 0
1
2
3
Input Voltage VIN (V)
Output Current IO (A)
Output Control Voltage VC (V)
Line Regulation
3.34
Thermal Protection Characteristics
4
Circuit Current
20
3.32
Output Voltage VO (V)
3 VIN=5V IO=5mA 2
Ground Current lG (mA)
Output Voltage VO (V)
15 IO=1A-0A 0.25A step 10
3.30 IO= 1A 0.75A 0.5A 0.25A 0A
3.28
3.26
1
5
3.24
0 0
3.22 0
2
4
6
8
10
12
20
60
100
140
180
0 0
2
4
6
8
10
Input Voltage VIN (V)
Case Temperature TC (C)
Input Voltage VIN (V)
[Note on Thermal Protection] The thermal protection circuit is intended for protection against heat during instantaneous short-circuiting. Its operation is not guaranteed for continuous heating conditions such as short-circuiting over extended periods of time.

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