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SI-8000TM 데이터시트 PDF




Sanken에서 제조한 전자 부품 SI-8000TM은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

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부품번호 SI-8000TM 기능
기능 DC/DC Step-Down Converter IC
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SI-8000TM 데이터시트, 핀배열, 회로
DC/DC Step-Down Converter IC
SI-8000TM Series
September 2005
General Descriptions
SI-8000TM series has 300kHz oscillation frequency, so
it contributes miniaturization of a chalk coil.
Therefore, it realizes a compact and high efficient
power supply together with TO 252-5 package
(compatible:SC-63) .
SI-8000TM series has the function required for
switching regulators and protection circuits such as
over-current, and overheating.
With only four discrete components, it realizes a high
efficient switching regulator without adjustment.
1.5A output current by compact power surface mount
package.
Package---TO252-5
Applications
DVD RecorderFPD TV
OA equipment, such as a printer
On-board local power supply
Key Specifications
Features
1.5A output current by compact power surface mount package.
High Efficiency 81% (at VIN=15V, Io=0.5A,Vo=5V)
Requires only four discrete components. (C3: required for soft
start.)
Built-in Oscillation circuit
(oscillation frequency : 300kHz (TYP))
Constant current type overcurrent protection and overheating
protection.
Soft start function. (ON/OFF function available. Output OFF at
Low level.)
Low consumption current at Output OFF.
Input
Voltage
Output
Current
Output
Voltage
Efficiency
(TYP)
SI-8008T
M
(ADJ Type)
0.8V
(REF Voltage)
81%
(5V Set-up)
Typical Connection
SI-8033T
M
SI-8050T
M
43V
0 to 1.5A
3.3V 5.0V
76% 81%
SI-8120T
M
12.0V
87%
C1220μF
C2470μF
C31μF
(At the time of soft start functional use)
L147μH
DiSFPB66(Sanken)
.
Sanken Electric Co.,Ltd.
http://www.sanken-ele.co.jp/en/
1/15
I02-001EA-050910




SI-8000TM pdf, 반도체, 판매, 대치품
DC/DC Step-Down Converter IC
SI-8000TM Series
September 2005
*3 Efficiency is calculated by the following equation.
η(%)=
VOIO
VINIIN
×100
*4 No.5 terminal is a SS terminal to enable soft start by connecting a capacitor. The output can
be turned on and off by using a SS terminal. The output is stopped by decreasing the SS
terminal voltage below VSSL and in order to perform ON/OFF operation of Vout, it is required
to connect NPN transistor or the output of open collector type TTL between No.5 terminal
and GND.
In case that both soft and Vout ON/OFF are used, a protection measure such as limitation of
current is required, as the discharge current of C3 flows across a transistor for ON/OFF
operation, if the capacitance of C3 large. As a pull-up type resistor is provided inside the IC,
no external voltage can be applied. In case of no use of ON/OFF, please keep it open.
SSII--8000000TTMFE
5 SS
SSII--800000TTMFE
5 SS
C3
SSII--8800000TTMFE
5 SS
C3
VO.ON/OFF
Soft start
Soft start
+VO.ON/OFF
4-2 Typical characteristics (Ta=25)
(1)Efficiency
SI-80S0I8-T8M00E8TffMicieEnTEfcfFfyiEfcEiCifc nfiiueccrnyivecCneycuyrve
Vo=5VTaA=d2ju5℃ste dVVooR==155=vV4a.2dkjuOshtemd, RR21==04.82kkOΩhmR2=0 8kΩ
85
80
75
70
65 VIN=
8v,10v,15v,20v,30v,
40v
60
55
0
0.5
Iout A
1
1.5
Sanken Electric Co.,Ltd.
4/15
I02-001EA-050910

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SI-8000TM 전자부품, 판매, 대치품
DC/DC Step-Down Converter IC
SI-8000TM Series
September 2005
Reference data
SI-8000TM Copper area on PC board vs. thermal resistance.
Area of PC board3S0I×-33000m0KmM/KMS 銅箔面積ー熱抵抗
100
90
80
70
60
50
40
10
100
Copper area on PC boa rd(㎜2mm2
1000
1.5
1
0.5
0
10
Copper area on PC board vs. Power dissipation
銅箔面Tj=100Areaof PCTbojmardax=301×0300mm
100
Copper areaonPCbo ard㎜2mm2
Ta=25℃
40℃
60℃
85℃
1000
Calculation of junction temperature
The junction temperature can be obtained from the following equation using the Tc that is measured by
thermocouple.
Tj = PD ×θj C + TC
(θj-c=6℃/W)
Tc measurement point
5. Block diagram (Connection diagram)
Sanken Electric Co.,Ltd.
7/15
I02-001EA-050910

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