SI-3050KD Datasheet, PDF (1/3 Pages) Sanken electric – Surface-Mount, Low Current Consumption, Low Dropout Voltage

1-1-4 Linear Regulator ICs
SI-3000KD Series Surface-Mount, Low Current Consumption, Low Dropout Voltage
■Features
• Compact surface-mount package (TO263-5)
• Output current: 1.0A
• Low dropout voltage: VDIF ≤ 0.6V (at IO = 1.0A)
• Low circuit current consumption: Iq ≤ 350 µA
(600 µA for SI-3010KD, SI-3050KD)
• Low circuit current at output OFF: Iq (OFF) ≤ 1 µA
• Built-in overcurrent, thermal protection circuits
• Compatible with low ESR capacitors (SI-3012KD
and SI-3033KD)
■Absolute Maximum Ratings
(Ta=25°C)
Parameter
DC Input Voltage
Ratings
Symbol
Unit
SI-3012KD/3033KD
SI-3010KD/3050KD
VIN
17
35^*1
V
Output Control Terminal Voltage
VC
VIN
V
DC Output Current
IO
1.0
A
Power Dissipation
PD*2
3
W
Junction Temperature
Tj
–30 to +125
°C
Storage Temperature
Tstg
–30 to +125
°C
Thermal Resistance (Junction to Ambient Air)
θ j-a
Thermal Resistance (Junction to Case)
θ j-c
33.3
°C/W
3
°C/W
*1: A built-in input-overvoltage-protection circuit shuts down the output voltage at the Input Overvoltage Shutdown Voltage
of the electrical characteristics.
*2: When mounted on glass-epoxy board of 1600mm² (copper laminate area 100%).
■Applications
• Secondary stabilized power supply (local power supply)
■Electrical Characteristics 1 (Low Input Voltage type compatible with low ESR output capacitor) _{(Ta=25°C, VC=2V, unless otherwise specified)}
Ratings
Parameter
Symbol
SI-3012KD (Variable type)
SI-3033KD
Unit
Input Voltage
min.
typ.
max.
min.
typ.
max.
VIN
2.4^*3
*4
*3
*4
V
Output Voltage
(Reference Voltage for SI-3012KD)
VO (VADJ)
Conditions
1.24
1.28
VIN=3.3V, IO=10mA
1.32
3.234
3.300
3.366
V
VIN=5V, IO=10mA
Line Regulation
∆VOLINE
Conditions
15
VIN=3.3 to 8V, IO=10mA (VO=2.5V)
15
mV
VIN=5 to 10V, IO=10mA
Load Regulation
∆VOLOAD
Conditions
40
VIN=3.3V, IO=0 to 1A (VO=2.5V)
50
mV
VIN=5V, IO=0 to 1A
VDIF
0.4
0.4
Dropout Voltage
Conditions
IO=0.5A (VO=2.5V)
0.6
IO=0.5A
V
0.6
Conditions
IO=1A (VO=2.5V)
IO=1A
Quiescent Circuit Current
Iq
Conditions
350
VIN=3.3V, IO=0A, VC=2V, R2=2.4kΩ
350
µA
VIN=5V, IO=0A,VC=2V
Circuit Current at Output OFF
Iq (OFF)
Conditions
1
VIN=3.3V, VC=0V
1
µA
VIN=5V, VC=0V
Temperature Coefficient of
Output Voltage
∆VO/∆Ta
Conditions
±0.3
Tj=0 to 100°C (VO=2.5V)
±0.3
Tj=0 to 100°C
mV/ °C
Ripple Rejection
RREJ
Conditions
55
VIN=3.3V, f=100 to 120HZ, IO=0.1A (VO=2.5V)
55
dB
VIN=5V, f=100 to 120HZ, IO=0.1A
Overcurrent Protection Starting
IS1
1.1
Current*1
Conditions
VIN=3.3V
Control Voltage (Output ON)^*2
VC, IH
2
Control Voltage (Output OFF)
VC, IL
0.8
1.1
A
VIN=5V
2
V
0.8
VC
Control Current (Output ON)
Terminal
IC, IH
Conditions
40
VC=2V
VC=2V
40
µA
IC, IL
–5
Control Current (Output OFF)
Conditions
0
VC=0V
–5
0
µA
VC=0V
*1: IS1 is specified at the 5% drop point of output voltage VO under the condition of Output Voltage parameter.
*2: Output is OFF when the output control terminal (VC terminal) is open. Each input level is equivalent to LS-TTL level. Therefore, the device can be driven directly by LS-TTLs.
*3: Refer to the Dropout Voltage parameter.
*4: 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.
74 ICs