1-1-3 DC/DC Converter ICs
SI-8000Y Series CFu
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■Features
■Absolute Maximum Ratings
• Compact (equivalent to TO220) full-mold
Parameter
Input Voltage
Symbol
VIN
Ratings
Unit
V
package
45
• Output current: 8.0 A
PD1
PD2
Tj
20.8(With infinite heatsink)
W
Power Dissipation
1.8(Without heatsink, stand-alone operation)
W
• High efficiency: 86%
Junction Temperature
–30 to +150
–40 to +150
6
°C
• Built-in reference oscillator (130 kHz)
Storage Temperature
Tstg
θj-c
°C
• Built-in drooping-type-overcurrent protection
and thermal protection circuits
Thermal Resistance (Junction to Case)
Thermal Resistance (Junction to Ambient Air)
°C/W
°C/W
θj-a
66.7
• Built-in soft start circuit (Output ON/OFF
available)
• Low current consumption during off
■Applications
• AV equipment
• OA equipment
• Gaming equipment
• Onboard local power supplies
■Recommended Operating Conditions
Raings
0 to 8.0
Parameter
Symbol
Unit
SI-8010Y
8 or VO+3* to 43
1 to 15
SI-8050Y
8 to 43
5
Input Voltage Range
VIN
Vo
V
V
Output Voltage Range
Output Current Range
Io
A
Operating Junction Temperature Range
Operating Temperature Range
Tjop
Top
–30 to +135
–30 to +85
°C
°C
*: The minimum value of the input voltage range is 8 V or Vo + 3V, whichever is higher.
■Electrical Characteristics
Ratings
Parameter
Symbol
SI-8010Y*
SI-8050Y
Unit
mIN.
0.98
typ.
1.00
max.
1.02
mIN.
4.90
typ.
5.00
max.
5.10
VO(VREF)
Output Voltage
(Reference voltage for SI-8010Y)
V
mV/°C
%
Conditions
VIN=30V, Io=0.1A
±0.1
VIN=30V, Io=0.1A
±0.5
∆VO/∆T(∆VREF/∆T)
Temperature Coefficient of Output Voltage
(Reference voltage temperature coefficient for SI-8010Y)
Conditions
VIN=30V, Io=0.1A, Ta=0 to 100°C
VIN=30V, Io=0.1A, Ta=0 to 100°C
η
86
VIN=30V, Io=3A
130
86
VIN=30V, Io=3A
130
Efficiency
Conditions
fo
Oscillation Frequency
Line Regulation
kHz
mV
mV
A
Conditions
VIN=30V, Io=3A
30
VIN=30V, Io=3A
30
∆VOLINE
90
90
90
90
Conditions
VIN=10 to 43V, Io=3A
30
VIN=10 to 43V, Io=3A
30
∆VOLOAD
Conditions
Is
Load Regulation
VIN=30V, Io=0.1 to 8A
VIN=30V, Io=0.1 to 8A
8.1
8.1
Overcurrent Protection Starting Current
Conditions
Iq
VIN=20V
VIN=20V
8
8
VIN=30V, Io=0A, EN/SS=open
200
mA
µA
Conditions
Iq(OFF)
VIN=30V, Io=0A, EN/SS=open
Quiescent Circuit Current
200
500
30
500
30
Conditions
ISSL
VIN=30V, EN/SS=0V
10
VIN=30V, EN/SS=0V
10
Outflow Current at
Low Voltage
µA
Conditions
VSSL
VIN=30V, EN/SS=0V
VIN=30V, EN/SS=0V
EN/SS Pin*
0.5
0.5
Low Level Voltage
V
Conditions
AEA
VIN=30V
300
VIN=30V
300
Error Amplifier Voltage Gain
Error Amplifier Transformer Conductance
Current Sense Amplifier Impedance
Maximum ON Duty
V/V
µA/V
V/A
%
GEA
800
800
1/GCS
DMAX
DMIN
0.16
92
0.16
92
Minimum ON Time
200
200
nsec
*:R1=8kΩ, R2=2kΩ when Ta=25°C and Vo=5V
SI-8000Y
SI-8000Y
5
SS
C6
5 SS
C6
Soft start
Soft start
+VOUT. ON/OFF
ICs
48
ETC [ ETC ]
