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SAI01 PDF даташит

Спецификация SAI01 изготовлена ​​​​«Sanken electric» и имеет функцию, называемую «Surface-mount and Separate Excitation Type».

Детали детали

Номер произв SAI01
Описание Surface-mount and Separate Excitation Type
Производители Sanken electric
логотип Sanken electric логотип 

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SAI01 Даташит, Описание, Даташиты
qSAI Series
SAI Series
Surface-Mount, Separate Excitation Switching Type
sFeatures
• Surface-mount package
• Output current: 0.4 to 0.5A
• High efficiency: 75 to 89%
• Requires only 4 external components
• Phase correction and output voltage adjustment performed internally
• Built-in reference oscillator (60kHz)
• Built-in overcurrent and thermal protection circuits
sApplications
• Power supplies for telecommunication equipment
• Onboard local power supplies
sLineup
Part Number
VO(V)
IO(A)
SAI01
SAI02
5.0 3.3
0.5
SAI03
12.0
SAI04
15.0
0.4
sAbsolute Maximum Ratings
Parameter
DC Input Voltage
Power Dissipation
Junction Temperature
Storage Temperature
SW Terminal Applied Reverse Voltage
Thermal Resistance(junction to case)
Symbol
VIN
PD
Tj
Tstg
VSW
Rth(j-c)
Ratings
35
0.75
+125
–40 to +125
–1
20
sRecommended Operating Conditions
Parameter
Symbol
DC Input Voltage Range
Output Current Range
Operating Junction Temperature Range
VIN
IO
Tjop
SAI01
SAI02
7 to 33 5.3 to 28
0 to 0.5
Ratings
SAI03
15 to 33
–30 to +125
SAI04
18 to 33
0 to 0.4
SAI06
12 to 33
SAI06
9.0
Unit
V
W
°C
°C
V
°C/W
Unit
V
A
°C
72









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SAI01 Даташит, Описание, Даташиты
qSAI Series
sElectrical Characteristics
Ratings
(Ta=25°C)
Parameter
Symbol
SAI01
SAI02
SAI03
SAI04
SAI06
Unit
min. typ. max. min. typ. max. min. typ. max. min. typ. max. min. typ. max.
Output Voltage
VO 4.80 5.00 5.20 3.17 3.30 3.43 11.40 12.00 12.60 14.25 15.00 15.75 8.55 9.00 9.45
Conditions VIN=20V, IO=0.3A
VIN=15V, IO=0.3A
VIN=24V, IO=0.3A
VIN=27V, IO=0.3A
VIN=21V, IO=0.3A
V
Efficiency
η 80
Conditions VIN=20V, IO=0.3A
75
VIN=15V, IO=0.3A
88
VIN=24V, IO=0.3A
89
VIN=27V, IO=0.3A
86
VIN=21V, IO=0.3A
%
Switching Frequency
f 60
Conditions VIN=20V, IO=0.3A
60
VIN=15V, IO=0.3A
60
VIN=24V, IO=0.3A
60
VIN=27V, IO=0.3A
60
VIN=21V, IO=0.3A
kHZ
Line Regulation
VOLINE
80 100
60 80
100 130
100 130
90 110
mV
Conditions VIN=10 to 30V, IO=0.3A VIN=8 to 28V, IO=0.3A VIN=18 to 30V, IO=0.3A VIN=21 to 30V, IO=0.3A VIN=15 to 30V, IO=0.3A
Load Regulation
VOLOAD
30 40
20 30
70 95
90 120
50 80
mV
Conditions VIN=20V, IO=0.1 to 0.4A VIN=15V, IO=0.1 to 0.4A VIN=24V, IO=0.1 to 0.4A VIN=27V, IO=0.1 to 0.4A VIN=21V, IO=0.1 to 0.4A
Temperature Coefficient of Output Voltage VO/Ta
±0.5
±0.5
±1.5
±1.5
±1.0 mV/°C
Ripple Rejection
RREJ
Conditions
45
f=100 to 120HZ
45
f=100 to 120HZ
45
f=100 to 120HZ
45
f=100 to 120HZ
45
f=100 to 120HZ
dB
Overcurrent Protection
Starting Current
IS1 0.55
Conditions
VIN=10V
0.55
VIN=8V
0.45
VIN=18V
0.45
VIN=21V
0.45
VIN=15V
A
sOutline Drawing
(unit: mm)
3VOS
4
.GND
a
2 SW
b 1VIN
6.8max.
A 8.0±0.5
6.3±0.2
1.0±0.3
0~0.15
3.0±0.2
9.8±0.3
3.6±0.2
4.0max.
1.4±0.2
a. Part Number
b. Lot Number
A Case temperature measuring point
q VIN
w SWOUT
e VOS
r GND
Plastic Mold Package Type
Flammability: UL94V-0
Weight: Approx. 0.22g
sBlock Diagram
VIN 1
Reg.
OCP
OSC
Reset
Comp.
Drive
Amp.
4
GND
VREF
2 SWOUT
TSD
3 VOS
sStandard External Circuit
1
VIN VIN
C1
100µF
+
GND
SAI
GND
4
L1
2
SWOUT
3.3V 5V : 200µH
9V 12V 15V : 300µH
VO
3
VOS
SFPB54
(Sanken)
D1
+
C2
330µF
GND
73









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SAI01 Даташит, Описание, Даташиты
qSAI Series
sExample of Printed Circuit Board
SW
L1 DI1
21
SAI
+
34
VIN
C1
GND
C2
VO
sTa-PD Characteristics
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
–30
• Glass epoxy
substrate
(95×69×1.2)
• Natural cooling
0 25 50 75 100 125
Ambient Temperature Ta (°C)
a) For optimum operation, there must be only
one GND line originating from terminal 4
and each component must be connected
with the shortest possible wiring.
b) To prevent heating of the IC, it is best to
make the GND pattern as large as pos-
sible since the internal frame and termi-
nal 4 (GND) are connected to each other.
PD=VO•IO
100 VO
–1 –VF•IO 1–
ηχ VIN
The efficiency depends on the input voltage and the out-
put current. Thus, obtain the value from the efficiency
graph on page 75 and substitute the percentage in the
formula above.
VO:Output voltage
IO :Output current
ηx :Efficiency (%)
VF :Diode forward voltage
SFPB54-0.3V
Thermal design for D1 must be considered separately.
sSelecting External Components
1. Inductor L1
1) It must be suited for switching regulators.
Do not use inductors as noise filters as they generate excessive heat.
2) It must have the appropriate inductance value.
If the inductance is too small (150µH or lower), abnormal oscillation may occur causing operation problems in the overcurrent protection
circuit within the rated current range.
3) The rated current must be satisfied.
If the rated current is exceeded, magnetic saturation leads to overcurrent.
2. Capacitors C1 and C2
1) They must satisfy the withstand voltage and allowable ripple current.
Exceeding the ratings of these capacitors or using them without derating shortens their service lives and may also cause abnormal
oscillation of the IC.
2) C2 must be a low-impedance type capacitor.
A low-impedance type capacitor is recommended for C2 to ensure minimum ripple voltage and stable switching operation.
3. Diode D1
The Sanken SFPB54 diode is recommended for D1. If you intended to use an equivalent diode, be sure to use a Schottky Barrier diode and
make sure that the reverse voltage applied to terminal 2 of the IC does not exceed the value (–1V) given in the absolute maximum ratings. If
you use a fast recovery diode or any other diode, application of a reverse voltage generated from the recovery or ON voltage of the diode may
damage the IC.
Application
Variable output voltage
Output voltage can be adjusted in the same way as SI-8000S in page 85.
74










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