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SI-8000GL Datasheet, PDF (1/4 Pages) Sanken electric – Series Compact Separate Excitation Step-down Switching Mode Regulator ICs | |||
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1-1-2 Switching Mode Regulator ICs
SI-8000GL Series Compact, Separate Excitation Step-down Switching Mode Regulator ICs
â Features
⢠DIP 8 pin package
⢠Output current: 1.5A
⢠High efficiency: 86% (at VIN = 20V, lO = 1A, VO
= 5V)
⢠Capable of downsize a choke-coil due to IC's
high switching frequency (250kHz). (Com-
pared with conventional Sanken devices)
⢠The output-voltage-variable type can vary its
output voltage from 1V to 14V because of its
low reference voltage (Vref) of 1V.
⢠Wide Input Voltage Range (8 to 50V)
⢠Output ON/OFF available
⢠Built-in overcurrent protection and thermal
protection circuits
â Absolute Maximum Ratings
Parameter
DC Input Voltage
Power Dissipation
Junction Temperature
Storage Temperature
Thermal Resistance (junction to case)
Thermal Resistance (junction to ambient air)
Symbol
VIN
PD*1
Tj
Tstg
θ j-c
θ j-a
*1: Limited by thermal protection.
â Applications
⢠Onboard local power supplies
⢠OA equipment
⢠For stabilization of the secondary-side output voltage of switching power supplies
â Recommended Operating Conditions
Parameter
Symbol
DC Input Voltage Range
VIN
Output Voltage Range
VO
Output Current Range
IO
Operating Junction Temperature Range
Tjop
Operating Temperature Range
Top
*1: The minimum value of an input voltage range is the higher of either 8V or VO+3V.
Ratings
53
1
+125
â40 to +125
28
100
Ratings
SI-8010GL
(8 or VO+3)*1 to 50
1 to 14
0.02 to 1.5
â30 to +125
â30 to +125
â Electrical Characteristics
Parameter
Symbol
min.
Reference Voltage
VREF
Conditions
0.97
Efficiency
Eff
Conditions
Oscillation Frequency
FOSC
Conditions
Line Regulation
âVOLINE
Conditions
Load Regulation
âVOLOAD
Conditions
Temperature Coefficient
of Reference Voltage
âVREF/âTa
Ratings
SI-8010GL (Variable type)
typ.
1.00
VIN=12V, IO=1A
86
VIN=20V, IO=1A, VO=5V
250
VIN=12V, IO=1A
20
VIN=10 to 30V, IO=1A
10
VIN=12V, IO=0.1 to 1.5A
±0.5
Overcurrent Protection
IS
1.6
Starting Current
Conditions
Quiescent Circuit Current
Iq
Conditions
Circuit Current at Output OFF
Iq(OFF)
Conditions
CE/SS*
Terminal
Low Level Voltage
Terminal Outflow
Current at Low Voltage
VSSL
ISSL
Conditions
VIN=12V
7
VIN=12V, IO=0A
VIN=12V, VON/OFF=0.3V
VSSL=0V
*: Pin 2 is the CE/SS 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 voltage of this pin to VSSL or lower. CE/SS-pin voltage can be
changed with an open-collector drive circuit of a transistor.
When using both the soft-start and ON/OFF functions together, the discharge current
from C4 flows into the ON/OFF control transistor. Therefore, limit the current securely to
protect the transistor if C3 capacitance is large. The CE/SS pin is pulled up to the power
supply in the IC, so applying the external voltage is prohibited.
SI-8000GL
2 CE/SS
max.
1.03
40
30
400
0.5
50
SI-8000GL
2 CE/SS
C4
Unit
V
W
°C
°C
°C/W
°C/W
(Ta=25°C)
Unit
V
%
kHZ
mV
mV
mV/°C
A
mA
µA
V
µA
SI-8000GL
2 CE/SS
C4
VO. ON/OFF
Soft start
Soft start
+VO. ON/OFF
68 ICs
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