SI-8050TM PDF даташит
Спецификация SI-8050TM изготовлена «Sanken» и имеет функцию, называемую «DC/DC Step-Down Converter IC». |
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Детали детали
Номер произв | SI-8050TM |
Описание | DC/DC Step-Down Converter IC |
Производители | Sanken |
логотип |
15 Pages
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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 Recorder、FPD 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%
C1:220μF
C2:470μF
C3:1μF
(At the time of soft start functional use)
L1:47μH
Di:SFPB66(Sanken)
.
Sanken Electric Co.,Ltd.
http://www.sanken-ele.co.jp/en/
1/15
I02-001EA-050910
No Preview Available ! |
DC/DC Step-Down Converter IC
SI-8000TM Series
September 2005
1. Scope
The present specifications shall apply to a DC-DC buck converter SI-8008TM.
2. Outline
Classification Semiconductor IC (monolithic IC)
Structure
Plastic package (transfer mold)
Applications
・DC voltage regulator
・Power supplies for telecommunication equipment , office equipment etc ,ON-board local regulator
・Output voltage regulator at secondary stage of switch mode power supply
3. Absolute maximum ratings
3-1 Absolute maximum ratings
Characteristic
DC input voltage
Power dissipation 1
Power dissipation2
Junction temperature
Storage temperature
Thermal resistance (junction-case)
Thermal resistance
(junction-ambient air)
Symbol
VIN
Pd1
Pd2
Tj
Tstg
θj-c
θj-a
Ratings
43
1.06
1.65
-40~150
-40~150
6
95
Units
Remarks
V
W
W
℃
℃
℃/W
℃/W
Glass‐epoxy board mounting in 900square
㎜, copper area 4.3%
Tjmax=125℃
Glass‐epoxy board mounting in 900square
㎜, copper area 50%
Tjmax=125℃
Thermal protection circuit is built-in
in this product and when junction
temperature rises to 130℃ or
higher, it may be caused to operate
Recommended max. junction
temperature at operation is 125℃.
Glass‐epoxy board mounting in 900square
㎜, copper area 4.3%
.
Sanken Electric Co.,Ltd.
2/15
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DC/DC Step-Down Converter IC
SI-8000TM Series
September 2005
3-2 Recommended operating conditions
Characteristic
Symbol
DC input voltage range
DC output voltage range
DC output current range
Operating junction temperature
range
Operating temperature range
VIN
Vo
Io
Tjop
Top
Ratings
MIN
MAX
*1 Vo+3
40
0.8~24
0~1.5
-40~125
-40~125
Units
V
V
A
℃
℃
Remarks
Io=0~1.5A
*2 VIN≧Vo+3V
*2
*1 The minimum value of DC input voltage range is 8V when output is less than 5V,
VO+3,when the output is more than 5V.In the case of VIN=Vo+2~Vo+3V , it is set to
Io=1A MAX.
*2 To be used within the allowable package power dissipation characteristics (refer to P6).
4. Electrical characteristics
4-1 Electrical characteristics (Ta=25℃、Vo=5V adjusted R1=4.2kΩ,R2=0.8kΩ)
Characteristic
Symbol
MIN
Limits
TYP
MAX
Reference voltage
VADJ
0.784 0.800 0.816
Units
V
Reference voltage temperature coefficient ⊿VREF/⊿T
±0.1
mV/℃
Efficiency *3
η 81 %
Operating frequency
fo 300 kHz
Test conditions
VIN=15V,IO=0.1A
VIN=15V
IO=0.1A,Tc=0~100℃
VIN=15V,IO=0.5A
,
VIN=15V,IO=0.5A
Line regulation
VLine
60 80 mV VIN=10~30V,IO=0.5A
Load regulation
VLoad
10 40 mV VIN=15V,IO=0.2~1.5A
Over current protection starting current
IS 1.6
A VIN=15V
ON/OFF
terminal *4
Low level voltage
Flow-out current at low
level voltage
Quiescent current 1
Quiescent current 2
VSSL
ISSL
Iq
Iq(off)
0.5 V
10 40 μA VSSL=0V
6 mA VIN=15V,IO=0A
200
400
μA
VIN=15V
VSS=0V
Sanken Electric Co.,Ltd.
3/15
I02-001EA-050910
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