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SPI-8000A Datasheet(PDF) 1 Page - Sanken electric

Part # SPI-8000A
Description  Surface Mount, Separate Excitation Step-down Switching Mode Regulator ICs
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Manufacturer  SANKEN [Sanken electric]
Direct Link  http://www.sanken-ele.co.jp/en
Logo SANKEN - Sanken electric

SPI-8000A Datasheet(HTML) 1 Page - Sanken electric

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52
ICs
■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
■Absolute Maximum Ratings
Unit
V
W
°C
°C
°C/W
°C/W
Ratings
53
2.4
+125
–40 to +125
18
50
Symbol
VIN
PD*1, *2
Tj
Tstg
θj-c*2
θj-a*2
Parameter
DC Input Voltage
Power Dissipation
Junction Temperature
Storage Temperature
Thermal Resistance (junction to case)
Thermal Resistance (junction to ambient air)
(Ta=25
°C)
Parameter
DC Input Voltage Range
Output Voltage Range
Output Current Range
Operating Junction Temperature Range
Operating Temperature Range
Symbol
VIN
VO
IO
Tjop
Top
Ratings
SPI-8010A
(8 or Vo+3)*1 to 50
1 to 14
0.02 to 3.0
–30 to +125
–30 to +125
*1: The minimum value of an input voltage range is the higher of either 8V or VO+3V.
■Recommended Operating Conditions
*1: Limited due to thermal protection.
*2: When mounted on glass-epoxy board 700cm2 (copper laminate area 30.8cm2).
■Electrical Characteristics
Unit
V
%
kHZ
mV
mV
mV/
°C
A
mA
µA
V
µA
Parameter
Reference Voltage
Efficiency
Oscillation Frequency
Line Regulation
Load Regulation
Temperature Coefficient of
Reference Voltage
Overcurrent Protection
Starting Current
Quiescent Circuit Current
Circuit Current at Output OFF
CE/SS
Low Level Voltage
Terminal
Outflow Current at
Low Voltage
Symbol
VADJ
Conditions
Eff
Conditions
FOSC
Conditions
∆VOLINE
Conditions
∆VOLOAD
Conditions
∆VADJ/∆Ta
IS
Conditions
Iq
Conditions
Iq(off)
Conditions
VSSL
ISSL
Conditions
(Ta=25
°C)
* 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.
Rating
SPI-8010A (Variable type)
min.
typ.
max.
0.97
1.00
1.03
VIN=12V, IO=1A
86
VIN=20V, IO=1A, VO=5V
250
VIN=12V, IO=1A
20
40
VIN=10 to 30V, IO=1A
10
30
VIN=12V, IO=0.1 to 1.5A
±0.5
3.1
VIN=12V
7
VIN=12V, IO=0A
400
VIN=12V, VON/OFF=0.3V
0.5
50
VSSL=0V
Surface Mount, Separate Excitation Step-down Switching Mode Regulator ICs
SPI-8000A Series
■Applications
• Onboard local power supplies
•OA equipment
•For stabilization of the secondary-side output voltage of switching power supplies
SPI-8000A
SPI-8000A
CE/SS
4
CE/SS
4
CE/SS
C4
C4
4
VO. ON/OFF
Soft start
Soft start
+VO. ON/OFF
SPI-8000A
1-1-2 Switching Mode Regulator ICs


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