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SI-8005Q 数据表(PDF) 1 Page - Sanken electric

部件名 SI-8005Q
功能描述  Step-Down Switching Regulator with Current-Mode Control
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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-8005Q 数据表(HTML) 1 Page - Sanken electric

  SI-8005Q Datasheet HTML 1Page - Sanken electric SI-8005Q Datasheet HTML 2Page - Sanken electric  
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SI-8008Q
8
SS
C8
30
ICs
Soft start
1- 1-3 DC/DC Converter ICs
■ Features
• Compact surface-mount package (HSOP8)
• Introduction of current mode control method
• Output current: 3.5A
• High efficiency: 90% (Vo = 5 V)
• Built-in reference oscillator (500 kHz)
• A ceramic capacitor can be used for output
• Built-in drooping-type over current and thermal
protection circuits
• Built-in soft start circuit
• Built-in on/off function (Active Hi)
• Low current consumption during off
■ Applications
• DVD recorder, FPD-TV
• Onboard local power supplies
• OA equipment
■ Absolute Maximum Ratings
*1 : Limited by thermal protection circuit
*2: Note that the detection temperature for thermal protection is about 140°C.
■ Recommended Operating Conditions
*1 : The minimum value of the input voltage range is 4.75 V or Vo +3 V, whichever is higher.
■ Electrical Characteristics
(R1=46k
Ω, R2=5.1kΩ when Ta = 25°C and Vo=5V)
*: Pin 8 is the SS pin. Soft start at power on can be performed with a capacitor connected to this pin.
The SS pin is pulled up to the power supply in the IC, so applying the external voltage is prohibited.
SI-8000Q Series Surface Mount, Current Mode Control Step-down Switching Mode
Parameter
Symbol
Ratings
Unit
Conditions
Input Voltage
VIN
30
V
Power Dissipation*1
PD
1.35
W
When mounted on glass
–epoxy board, 30×30 mm (copper
laminate area : 25×25 mm)
Junction Temperature*2
Tj
–30 to +1 50
°C
Storage Temperature
Tstg
–40 to +1 50
°C
Thermal Resistance (junction to
case)
θj-c
40
°C/W
Thermal Resistance (junction to
ambient air)
θj-a
74
°C/W
When mounted on glass epoxy board, 30×30mm (copper
laminate area : 25×25 mm)
Parameter
Symbol
Ratings
Unit
Conditions
SI-8005Q
DC Input Voltage Range
VIN
Vo+3*1 to 28
V
Output Voltage Range
VO
0.5 to 24
V
Output Current Range
IO
0to3.5
A
Operating Junction Temperature Range
Tjop
–30 to +125
°C
Operating Temperature Range
Top
–30 to +85
°C
Parameter
Symbol
Rating
Unit
SI-8005Q
min.
typ.
max.
Reference Voltage
VADJ
0.485
0.500
0.515
V
Conditions
VIN=12V, Io=1A
Temperature Coefficient of Reference Voltage
∆VADJ/
∆T
0.05
mV/°C
Conditions
VIN=12V, Io=1 A, Ta=
–40 to +85°C
Efficiency
η
90
%
Conditions
VIN=12V, Io=1A
Oscillation Frequency
fo
450
500
550
kHz
Conditions
VIN=16V, Io=1A
Line Regulation
∆VOLNE
30
60
mV
Conditions
VIN=8 to 28V, Io=1 A
Load Regulation
∆VOLAD
30
60
mV
Conditions
VIN=12V, Io=0.1 to 3.5A
Over current Protection Starting Current
IS
3.6
6.0
A
Conditions
VIN=12V
Quiescent Circuit Current
Iq
18
mA
Conditions
VIN=12V, Io=0A, VEN=open
Iq(OFF)
20
µA
Conditions
VIN=12V, Io=0A, VEN=0V
SS Pin
Outflow Current at Low Voltage
ISSL
5
µA
Conditions
VIN=1 6V, VSSL=0V
EN Pin
High Level Voltage
Vc/N
2.8
V
Conditions
VIN=12V
Low Level Voltage
Vc/L
2.2
V
Conditions
VIN=12V
Inflow Current at Low Low Voltage
IC/E H
5
µA
Conditions
VEN=0V
Error Amplifier Voltage Gain
AEA
1000
V/V
Error Amplifier Transformer Conductance
GEA
800
µA/V
Current Sense Amplifier Impedance
1/GCS
0.35
V/A
Maximum ON Duty
DMAX
92
%
Minimum ON Time
DMIN
100
nsec.


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