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SI-8010GL 数据表(PDF) 2 Page - Sanken electric

部件名 SI-8010GL
功能描述  Series Compact Separate Excitation Step-down Switching Mode Regulator ICs
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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-8010GL 数据表(HTML) 2 Page - Sanken electric

  SI-8010GL Datasheet HTML 1Page - Sanken electric SI-8010GL Datasheet HTML 2Page - Sanken electric SI-8010GL Datasheet HTML 3Page - Sanken electric SI-8010GL Datasheet HTML 4Page - Sanken electric  
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69
ICs
SI-8000GL Series
■External Dimensions (DIP8)
(Unit: mm)
■Block Diagram
CE/SS
UVLO
OCP
P.REG
OSC
PWM
LOGIC
CE/SS
TSD
Reg
Comp
GND
1V
Boot REG
DRIVE
BS
SWOUT
VREF
VIN
+
-
+
-
Amp
Pin Assignment
1. GND
2. CE/SS
3. Reg
4. SWOUT
5. VIN
6. B.S
7. Comp
8. VREF
Plastic Mold Package Type
Flammability: UL 94V-0
Product Mass: Approx. 0.49 g
SI-8010GL
7
8
2
1
5
4
6
3
a
SK
b
9.4
±0.3
0.5
±0.1
0
°∼15°
c
8010GL
1.0
+0.3
-0.05
1.5
+0.3
-0.05
0.25+0.1
-0.05
2.54
7.6
0.25 M
0.89 TYP
2
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
–25
0
25
50
75
100
125
Ambient Temperature Ta (
°C)
j-a:100
°C/W
θ
■Ta-PD Characteristics
Note 1: The efficiency depends on the input volt-
age and the output current. Therefore, ob-
tain the value from the efficiency graph and
substitute the percentage in the formula
above.
Note 2: Thermal design for D1 must be considered
separately.
VO : Output voltage
VIN : Input voltage
IO : Output current
ηχ : Efficiency
VF : Diode D1 forward voltage
RK16···0.4V(IO=1A)
■Typical Connection Diagram
C1: 220
µF/63V
C2: 470
µF/25V
C3: 0.1
µF
C4: 1000pF
C5: 0.1
µF
C6: 0.047
µF
C7: 0.1
µF
Diode D1
• Be sure to use a Schottky-barrier diode as D1. If other diodes like fast recovery diodes are used, IC may be destroyed because of the reverse voltage generated
by the recovery voltage or ON voltage.
Choke coil L1
• If the winding resistance of the choke coil is too high, the efficiency may drop below the rated value.
• As the overcurrent protection starting current is approx. 2.5 A, take care concerning heat radiation from the choke coil caused by magnetic saturation due to
overload or short-circuited load.
Capacitor C1, C2
• As large ripple currents flow through C1 and C2, use high-frequency and low-impedance capacitors aiming for switching-mode-power-supply use. Especially
when the impedance of C2 is high, the switching waveform may become abnormal at low temperatures. For C2, do not use a capacitor with an extremely low
equivalent series resistance (ESR) such as an OS capacitor or a tantalum capacitor, which may cause an abnormal oscillation.
Resistors R2, R3
• R2 and R3 are the resistors to set the output voltage. Set their values so that IREF becomes approx. 2 mA. Obtain R2 and R3 values by the following formula above.
* To create the optimum operating conditions, place the components as close as possible to each other.
SI-8010GL
Reg
CE/SS
3
2
VIN
SWOUT
VREF
VIN
GND
V0
GND
5
C5
Comp
7
6
C6
C3
D1
L1
R2
R3
IREF
GND
B.S
SI-8010GL
1
8
4
R1
C4
C1
C7
+
C2
C8
+
C8: 0.1
µF
R1: 47
L1: 47
µH
D1: RK16
(Sanken)
PD=VO • IO
100
–1 –VF • IO 1–
VO
ηχ
VIN
R2=
(VOUT–VREF)
=
(VOUT–1)
(
Ω), R3 =
VREF
=
1
500(
Ω)
IREF
2
×10–3
IREF
2
×10–3
=
.
.


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