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SI-8000HD 数据表(PDF) 1 Page - Sanken electric

部件名 SI-8000HD
功能描述  Surface-Mount, Separate Excitation Step-down Switching Mode
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制造商  SANKEN [Sanken electric]
网页  http://www.sanken-ele.co.jp/en
标志 SANKEN - Sanken electric

SI-8000HD 数据表(HTML) 1 Page - Sanken electric

  SI-8000HD Datasheet HTML 1Page - Sanken electric SI-8000HD Datasheet HTML 2Page - Sanken electric  
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34
ICs
1-1-3 DC/DC Converter ICs
Paramter
Reference Voltage
Temperature Coefficient of Reference Voltage
Efficiency
Oscillation Frequency
Line Regulation
Load Regulation
Overcurrent Protection Starting Current
Low Level Voltage
SS Pin*1
Outflow Current at Low Voltage
Quiescent Circuit Current
■Features
• Surface-mount package (TO263-5)
• Output current: 5.5 A
• High efficiency: 83% (at TYP, Vo = 5 V)
• Requires only 5 discrete components (SI-
8008HD)
• Built-in reference oscillator (150 kHz)
• Built-in drooping-type overcurrent and thermal
protection circuits
• Built-in soft start circuit (Output ON/OFF
available)
• Low current consumption during off
■Applications
• DVD recorder, FPD-TV
• Onboard local power supplies
• OA equipment
■Absolute Maximum Ratings
■Recommended Operating Conditions
*1: The minimum value of the input voltage range is 4.5 V or Vo+3 V, whichever is higher.
Parameter
Input Voltage Range
Output Voltage Range
Output Current Range
Operating Junction Temperature Range
Operating Temperature Range
Symbol
VIN
VO
IO
Tjop
Top
Unit
V
V
A
°C
°C
Ratings
SI-8008HD
Vo+3*1 to 40
0.8 to 24
0 to 5.5
–30 to +100
–30 to +85
Symbol
VADJ
Conditions
(∆VADJ/∆T)
Conditions
η
Conditions
fo
Conditions
∆VOLINE
Conditions
∆VOLOAD
Conditions
IS
Conditions
VSSL
ISSL
Conditions
Iq
Conditions
Iq(OFF)
Conditions
■Electrical Characteristics
Unit
V
mV/°C
%
kHz
mV
mV
A
V
µA
mA
µA
(R1=4.2kΩ, R2=0.8kΩ when Ta=25°C and Vo=5V)
*1: Pin 5 is the SS pin. Soft start at power on can be performed with a capacitor connected to
this pin. The output can also be turned ON/OFF with this pin.
The output is stopped by setting the voltage of this pin to VSSL or lower. SS-pin voltage
can be changed with an open-collector drive circuit of a transistor. When using both the
soft-start and ON/OFF functions together, the discharge current from C3 flows into the ON/
OFF control transistor. Therefore, limit the current securely to protect the transistor if C3
capacitance is large. The SS pin is pulled up (3.7 V typ.) to the power supply in the IC, so
applying the external voltage is prohibited. If this pin is not used, leave it open.
*1: Limited by thermal protection circuit
*2: This product has built-in thermal protection circuits that may activate when the junction temperature exceeds 130°C.
The recommended design for the junction temperature during IC operation is below 125°C.
Unit
V
W
°C
°C
°C/W
°C/W
Ratings
43
3
+150
–40 to +150
3
33.3
Symbol
VIN
PD
Tj
Tstg
θj-c
θj-a
Parameter
Input Voltage
Power Dissipation*1
Junction Temperature*2
Storage Temperature
Thermal Resistance (Junction to Case)
Thermal Resistance (Junction to Ambient Air)
Conditions
When mounted on glass-epoxy board measuring 40×40 mm (copper laminate area: 100%)
When mounted on glass-epoxy board measuring 40×40 mm (copper laminate area: 100%)
When mounted on glass-epoxy board measuring 40×40 mm (copper laminate area: 100%)
Conditions
VIN
≥ Vo+3V
Ratings
SI-8008HD
min.
typ.
max.
0.784
0.800
0.816
VIN=15V, Io=1A
±0.1
VIN=15V, Io=1A, Tc=0 to 100°C
83
VIN=15V, Io=3A
150
VIN=15V, Io=3A
60
80
VIN=10 to 30V, Io=3A
20
50
VIN=15V, Io=0.2 to 5.5A
5.6
6.5
7.5
VIN=15V
0.5
10
30
VSSL=0V
6
VIN=15V, Io=0A
200
400
VIN=15V, VSS=0V
SI-8008HD
SI-8008HD
SS
5SS
5SS
C3
C3
5
VO.ON/OFF
Soft start
Soft start
+Vo. On/OFF
SI-8008HD
Surface-Mount, Separate Excitation Step-down Switching Mode
SI-8000HD Series


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