Sanken Electric Co SI-8911L Datasheet
●SI-8800L/8900L Series
SI-8800L/8900L Series
Separate Excitation Switching Type with Transformer
■Features
• Integrated switching IC and transformer construction
• Requires only input/output and soft start capacitors as external components
• Low switching noise
• Heatsink not required
• Built-in overcurrent protection circuit (+5V)
• ±2–output lineup (SI-8811L, SI-8911L)
■Applications
• Telephone power supplies
• Onboard local power supplies
■Lineup
Part Number
SI-8811L
SI-8911L
SI-8921L/8922L
VO(V) IO(A) VO(V) IO(A)
+5 0.45 –5 0.05
+5 0.3 –5 0.1
+5 0.6
Ch1 Ch2
■Absolute Maximum Rating
Parameter
DC Input Voltage
Power Dissipation
Junction Temperature
Storage T emperature
Symbol
VIN
PD
Tj
Tstg
SI-8811L SI-8911L SI-8921L SI-8922L
35 60
1.15 1.3 1.67 1.67
■Recommended Operating Conditions
Parameter
DC Input Voltage Range
Output Current Range 1
Output Current Range 2
Operating T emperature Range
*1: Output current 2 depends on the input/output conditions
*2: If IO2=50mA or more, the condition IO1>0.5×IO2 is recommended.
Symbol
VIN
IO1
IO2
Top
SI-8811L SI-8911L SI-8921L SI-8922L
min. typ. max. min. typ. max. min. typ. max. min. typ. max.
12 20 30 24 40 55 24 40 55 20 40 55
50 250 450 20 150 300
0 –20 –50
–10 +70 –10 +60 –10 +65 –10 +65
*1
Ratings
+100
–25 to +85
Ratings
0 –50 –100
*2
0 300 600 0 300 600
Unit
V
W
°C
°C
Unit
V
mA
mA
°C
102
●SI-8800L/8900L Series
■Electrical Characteristics
Parameter
Output Voltage 1
Output Voltage 2
Efficiency
Switching Frequency
Switching Ripple
Voltage 1
Switching Ripple
Voltage 2
Operation Starting
Voltage
Symbol
VO1
Conditions
VO2
Conditions
Conditions
∆Vr1
Conditions
∆Vr2
Conditions
VSt
Conditions
η
f
■Outline Drawing
SI-8811L, 8911L, 8921L, 8922L
oy
Ratings
SI-8811L SI-8911L SI-8921L SI-8922L
min. typ. max. min. typ. max. min. typ. max. min. typ. max.
4.75 5.00 5.25 4.75 5.00 5.25 4.95 5.10 5.20 4.95 5.10 5.20
Recommended operating conditions
–4.75 –5.00 –5.25 –4.75 –5.00 –5.25
Recommended operating conditions
72 65 72 72
Recommended operating conditions (typ.)
50 68 60 68 80 60 68 80
50 50 50 80 50 80
Recommended operating conditions (typ.)
50 50
Recommended operating conditions (typ.)
22 24 22 24 17 20
Recommended operating conditions (typ.)
(Ta=25°C)
Unit
V
%
kHZ
mVp-p
mVp-p
V
(unit: mm)
a
b
SK
qt
±0.2
16.8
±0.2
22
Terminal 1 marking
0.8max.
(4×P3.175=12.7)
±0.2
±0.2
19
22
a. Part Number
b. Lot Number
Open Air Type
Weight: Approx. 9.3g
±0.6
18
±0.6
4
(16.5)
±0.1
1
103
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