SI-8000JD Datasheet, PDF (1/2 Pages) Sanken electric – Surface-Mount Separate Excitation Step-down Switching Mode Regulator ICs

1-1-2 Switching Mode Regulator ICs
SI-8000JD Series Surface-Mount, Separate Excitation Step-down Switching Mode Regulator ICs
■Features
• Surface-mount package (TO263-5)
• Output current: 1.5A
• High efficiency: 77 to 88%
• Requires only 4 discrete components
• Internally-adjusted phase correction and
output voltage
• Capable of downsizing a choke-coil due to IC's
high switching frequency (125 kHz). (Com-
pared 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 Conditions
■Lineup
Part Number
VO(V)
IO(A)
SI-8033JD
3.3
SI-8050JD
SI-8090JD
5.0
9.0
1.5
SI-8120JD
12.0
■Absolute Maximum Ratings
Parameter
DC Input Voltage
Output Current
Symbol
VIN
IO
Ratings
43
1.5
Power Dissipation^*
PD
3
Junction Temperature
Tj
Storage Temperature
Tstg
Thermal Resistance (Junction to Case)
θ j-c
Thermal Resistance (Junction to
Ambient Air)
θ j-a
*: Limited by thermal protection circuit
+125
–40 to +125
3
33.3
Unit
V
A
W
°C
°C
°C/W
°C/W
Conditions
When mounted on glass-epoxy board 40 × 40 mm (copper
area 100%)
When mounted on glass-epoxy board 40 × 40 mm (copper
area 100%)
■Applications
• Power supplies for telecommunication equipment
• Onboard local power supplies, etc.
■Recommended Operating Conditions
Parameter
DC Input Voltage Range
DC Output Current Range^*
Operating Junction Temperature Range
Operating Temperature Range*
Ratings
Symbol
SI-8033JD
SI-8050JD
SI-8090JD
SI-8120JD
Unit
VIN1
5.3 to 40
7 to 40
11 to 40
14 to 40
VIN2
6.3 to 40
8 to 40
12 to 40
15 to 40
V
IO
0 to 1.5
A
Tjop
–30 to +125
°C
Top
–30 to +125
°C
*: Limited by Ta–PD characteristics
Conditions
IO=0 to 1A
IO=0 to 1.5A
VIN≥VO+3V
■Electrical Characteristics
Parameter
Output Voltage
Efficiency
Oscillation Frequency
Line Regulation
Load Regulation
Temperature Coefficient of Output Voltage
Overcurrent Protection
Starting Current
ON/OFF^*
Pin
Low Level Voltage
Outflow Current
at Low Voltage
Quiescent Circuit Current
Symbol
VO
Conditions
η
Conditions
f
Conditions
∆VOLINE
Conditions
∆VOLOAD
Conditions
∆VO/∆Ta
IS1
Conditions
VSSL
ISSL
Conditions
Iq
Conditions
Iq(oFF)
Conditions
SI-8033JD
min.
typ.
max.
3.234 3.30 3.366
VIN=15V, IO=0.5A
77
VIN=15V, IO=0.5A
125
VIN=15V, IO=0.5A
25
80
VIN=8 to 30V, IO=0.5A
10
30
VIN=15V, IO=0.2 to 0.8A
±0.5
1.6
VIN=15V
0.5
100
7
VIN=15V, Io=0A
200
VIN=15V, VON/OFF=0.3V
Ratings
SI-8050JD
SI-8090JD
min.
typ.
max.
min.
typ.
max.
4.90
5.00
5.10
8.82
9.00
9.18
VIN=20V, IO=0.5A
VIN=21V, IO=0.5A
82
86
VIN=20V, IO=0.5A
VIN=21V, IO=0.5A
125
125
VIN=20V, IO=0.5A
VIN=21V, IO=0.5A
40
100
50
120
VIN=10 to 30V, IO=0.5A
VIN=15 to 30V, IO=0.5A
10
40
10
40
VIN=20V, IO=0.2 to 0.8A
VIN=21V, IO=0.2 to 0.8A
±0.5
±1.0
1.6
1.6
VIN=20V
VIN=21V
0.5
0.5
100
100
VSSL=0V
7
7
VIN=20V, Io=0A
VIN=21V, Io=0A
200
200
VIN=20V, VON/OFF=0.3V
VIN=21V, VON/OFF=0.3V
SI-8120JD
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=0.5A
10
40
VIN=24V, IO=0.2 to 0.8A
±1.0
1.6
VIN=24V
0.5
100
7
VIN=24V, Io=0A
200
VIN=24V, VON/OFF=0.3V
(Ta=25°C)
Unit
V
%
kHZ
mV
mV
mV/ °C
A
V
µA
mA
µA
*: 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 voltage of this pin to VSSL or lower.
ON/OFF-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 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.
SI-8000JD
5 ON/OFF
SI-8000JD
5 ON/OFF
C3
SI-8000JD
5 ON/OFF
C3
VOUT. ON/OFF
Soft Start
Soft Start
+VOUT. ON/OFF
46 ICs