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SPI-8000A Datasheet, PDF (1/3 Pages) Sanken electric – Surface Mount, Separate Excitation Step-down Switching Mode Regulator ICs | |||
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1-1-2 Switching Mode Regulator ICs
SPI-8000A Series Surface Mount, Separate Excitation Step-down Switching Mode Regulator ICs
â Features
⢠Surface-mount 16 pin package
⢠Output current: 3.0A
⢠High efficiency: 91% (at VIN = 10V, lO = 1A, VO
= 5V)
⢠Capable of downsizing a choke-coil due to IC's
high switching frequency (125kHz). (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 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, *2
Tj
Tstg
θ j-c*2
θ j-a*2
Ratings
53
2.4
+125
â40 to +125
18
50
*1: Limited due to thermal protection.
*2: When mounted on glass-epoxy board 700cm2 (copper laminate area 30.8cm2).
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
SPI-8010A
(8 or Vo+3)*1 to 50
1 to 14
0.02 to 3.0
â30 to +125
â30 to +125
â Electrical Characteristics
Parameter
Symbol
min.
Reference Voltage
VADJ
Conditions
0.97
Efficiency
Oscillation Frequency
Line Regulation
Load Regulation
Eff
Conditions
FOSC
Conditions
âVOLINE
Conditions
âVOLOAD
Conditions
Temperature Coefficient of
Reference Voltage
âVADJ/âTa
Overcurrent Protection
IS
3.1
Starting Current
Conditions
Quiescent Circuit Current
Circuit Current at Output OFF
CE/SS
Terminal
Low Level Voltage
Outflow Current at
Low Voltage
Iq
Conditions
Iq(off)
Conditions
VSSL
ISSL
Conditions
Rating
SPI-8010A (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
VIN=12V
7
VIN=12V, IO=0A
VIN=12V, VON/OFF=0.3V
VSSL=0V
* Pin 4 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.
SPI-8000A
4 CE/SS
max.
1.03
40
30
400
0.5
50
SPI-8000A
4 CE/SS
C4
(Ta=25°C)
Unit
V
W
°C
°C
°C/W
°C/W
(Ta=25°C)
Unit
V
%
kHZ
mV
mV
mV/°C
A
mA
µA
V
µA
SPI-8000A
4 CE/SS
C4
VO. ON/OFF
Soft start
Soft start
+VO. ON/OFF
52 ICs
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