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PDF SI-8120JF Data sheet ( Hoja de datos )
| Número de pieza | SI-8120JF | |
| Descripción | Separate Excitation Step-down Switching Mode | |
| Fabricantes | ETC | |
| Logotipo |  |
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1-1-3 DC/DC Converter ICs
SI-8000JF Series Full-Mold, Separate Excitation Step-down Switching Mode
■Features
• Compact full-mold package (equivalent to
TO220)
• Output current: 1.5A
• High efficiency: 67 to 88%
• Requires only 4 discrete components
• Internally-adjusted phase correction and
output voltage
• Capable of downsize a choke-coil due to IC's
high switching frequency (125kHz).
(Compared with conventional Sanken devices)
• Built-in foldback-overcurrent and thermal
protection circuits
• Output ON/OFF available (circuit current at
output OFF: 200µA max.)
• Soft start available by ON/OFF pin
■Lineup
Part Number
VO (V)*
IO (A)
* VREF(V) for SI-8015JF
SI-8015JF
1.59
■Absolute Maximum Ratings
Parameter
DC Input Voltage
Power Dissipation
Junction Temperature
Storage Temperature
Thermal Resistance (Junction to Case)
Symbol
VIN
PD1
PD2
Tj
Tstg
θj-c
SI-8033JF
3.3
1.5
SI-8050JF
5.0
Ratings
43
16.6 (with infinite heatsink)
1.5 (without heatsink, standalone operation)
+125
–40 to +125
6.0
SI-8120JF
12.0
Unit
V
W
W
°C
°C
°C/W
■Applications
• Power supplies for telecommunication equipment
• Onboard local power supplies
■Recommended Operating Conditions
Parameter
DC Input Voltage Range
Output Current Range
Operating Junction Temperature Range
Symbol
VIN1
VIN2
IO
Tjop
SI-8015JF*
VO+2 to 40
VO+3 to 40
Ratings
SI-8033JF
SI-8050JF
5.3 to 40
7 to 40
6.3 to 40
8 to 40
0 to 1.5
–30 to +125
SI-8120JF
14 to 40
15 to 40
Unit
V
V
A
°C
Conditions
IO=0 to 1A
IO=0 to 1.5A
VIN≥VO+3V
* SI-8015JF is a variable output voltage type. The variable output voltage range is from 2.5 V to 24 V.
■Electrical Characteristics
Parameter
Output Voltage*1
Efficiency
Oscillation Frequency
Line Regulation
Load Regulation
Temperature Coefficient of
Output Voltage*3
Overcurrent Protection
Starting Current
Low Level Voltage
ON/OFF*5
Outflow Current
Terminal
at Low Voltage
Quiescent Circuit
Current
Symbol
VO*2
Conditions
η
Conditions
f
Conditions
∆VOLINE
Conditions
∆VOLOAD
Conditions
∆VO/∆Ta*4
IS1
Conditions
VSSL
ISSL
Conditions
Iq
Conditions
Iq(OFF)
Conditions
SI-8015JF
min. typ. max.
1.558 1.59 1.622
VIN=12V, IO=0.5A
67
VIN=12V, IO=0.5A
125
VIN=12V, IO=0.5A
25 80
VIN=8 to 30V, IO=0.5A
10 30
VIN=12V, IO=0.2 to 0.8A
±0.5
1.6
VIN=12V
0.5
100
VSSL=0V
7
VIN=12V, IO=0A
200
VIN=12V, VON/OFF=0.3V
Ratings
SI-8033JF
SI-8050JF
min. typ. max. min. typ. max.
3.234 3.30 3.366
4.90 5.00
5.10
VIN=15V, IO=0.5A
VIN=20V, IO=0.5A
77 82
VIN=15V, IO=0.5A
VIN=20V, IO=0.5A
125 125
VIN=15V, IO=0.5A
VIN=20V, IO=0.5A
25 80
40 100
VIN=8 to 30V, IO=1.0A
VIN=10 to 30V, IO=1.0A
10 30
10 40
VIN=15V, IO=0.5 to1.5A
VIN=20V, IO=0.5 to 1.5A
±0.5 ±0.5
1.6
VIN=15V
0.5
100
VSSL=0V
7
VIN=15V, IO=0A
200
VIN=15V, VON/OFF=0.3V
1.6
VIN=20V
0.5
100
VSSL=0V
7
VIN=20V, IO=0A
200
VIN=20V, VON/OFF=0.3V
SI-8120JF
min. typ. max.
11.76 12.00 12.24
VIN=24V, IO=0.5A
88
VIN=24V, IO=0.5A
125
VIN=24V, IO=0.5A
60 130
VIN=18 to 30V, IO=1.0A
10 40
VIN=24V, IO=0.5 to 1.5A
±1.0
1.6
VIN=24V
0.5
100
VSSL=0V
7
VIN=24V, IO=0A
200
VIN=24V, VON/OFF=0.3V
*1: Reference voltage for SI-8015JF
*3: Temperature Coefficient of Reference Voltage for SI-8015JF
*2: VREF for SI-8015JF
*4: ∆VREF/∆Ta for SI-8015JF
*5: Pin 5 is the ON/OFF pin. Soft start at power on can be performed with a capacitor connected
to this pin.
The output can also be turned ON/OFF with this pin. The output is stopped by setting the
SI-8000JF
voltage of this pin to VSSL or lower. ON/OFF-pin voltage can be changed with an open-collec-
tor drive circuit of a transistor. When using both the soft-start and ON/OFF functions together,
the discharge current from C3 flows into the ON/OFF control transistor. Therefore, limit the
current securely to protect the transistor if C3 capacitance is large. The ON/OFF pin is pulled
up to the power supply in the IC, so applying the external voltage is prohibited. If this pin is not
5 ON/OFF
used, leave it open.
SI-8000JF
5 ON/OFF
C3
(Ta=25°C)
Unit
V
%
kHZ
mV
mV
mV/ °C
A
V
µA
mA
µA
SI-8000JF
5 ON/OFF
C3
VOUT. ON/OFF
Soft start
Soft start
+VOUT. ON/OFF
34 ICs
1 page | ||
| Páginas | Total 2 Páginas | |
| PDF Descargar | [ Datasheet SI-8120JF.PDF ] | |
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