SI-8033JF Datasheet

1-1-3 DC/DC Converter ICs
SI-8000JF Series Full-Mold, Separate Excitation Step-down Switching Mode
■Features
■Lineup
• 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
Part Number
SI-8015JF
SI-8033JF
SI-8050JF
SI-8120JF
VO (V)*
1.59
3.3
5.0
12.0
IO (A)
1.5
* VREF(V) for SI-8015JF
■Absolute Maximum Ratings
Parameter
Symbol
Ratings
VIN
43
V
PD1
16.6 (with infinite heatsink)
W
DC Input Voltage
Power Dissipation
Unit
PD2
1.5 (without heatsink, standalone operation)
W
Junction Temperature
Tj
+125
°C
Storage Temperature
Tstg
–40 to +125
°C
Thermal Resistance (Junction to Case)
θ j-c
6.0
°C/W
■Applications
• Power supplies for telecommunication equipment
• Onboard local power supplies
■Recommended Operating Conditions
Ratings
Parameter
Symbol
DC Input Voltage Range
Unit
Conditions
SI-8015JF*
SI-8033JF
SI-8050JF
SI-8120JF
VIN1
VO+2 to 40
5.3 to 40
7 to 40
14 to 40
V
IO=0 to 1A
VIN2
VO+3 to 40
6.3 to 40
8 to 40
15 to 40
V
IO=0 to 1.5A
VIN≥VO+3V
Output Current Range
Operating Junction Temperature Range
IO
0 to 1.5
A
Tjop
–30 to +125
°C
* SI-8015JF is a variable output voltage type. The variable output voltage range is from 2.5 V to 24 V.
■Electrical Characteristics
(Ta=25°C)
Ratings
Parameter
Output Voltage*1
Line Regulation
Load Regulation
Temperature Coefficient of
Output Voltage*3
Overcurrent Protection
typ.
max.
min.
typ.
max.
min.
typ.
max.
1.558
1.59
1.622
3.234
3.30
3.366
4.90
5.00
5.10
11.76
12.00
12.24
VIN=12V, IO=0.5A
Starting Current
VIN=12V, IO=0.5A
VIN=20V, IO=0.5A
VIN=24V, IO=0.5A
77
82
88
VIN=15V, IO=0.5A
VIN=20V, IO=0.5A
VIN=24V, IO=0.5A
125
125
125
125
Conditions
VIN=12V, IO=0.5A
25
10
VIN=20V, IO=0.5A
VIN=24V, IO=0.5A
25
40
60
80
VIN=10 to 30V, IO=1.0A
VIN=18 to 30V, IO=1.0A
10
10
30
VIN=15V, IO=0.5 to 1.5A
VIN=20V, IO=0.5 to 1.5A
±0.5
±1.0
1.6
VIN=15V
VIN=20V
0.5
0.5
0.5
0.5
ISSL
100
100
100
100
Quiescent Circuit
Current
Conditions
Iq(OFF)
Conditions
*1: Reference voltage for SI-8015JF
*2: VREF for SI-8015JF
VSSL=0V
VSSL=0V
VSSL=0V
7
7
7
7
VIN=12V, IO=0A
VIN=15V, IO=0A
VIN=20V, IO=0A
VIN=24V, IO=0A
200
VIN=12V, VON/OFF=0.3V
200
VIN=15V, VON/OFF=0.3V
VSSL=0V
200
VIN=20V, VON/OFF=0.3V
VIN=24V, VON/OFF=0.3V
mA
µA
SI-8000JF
SI-8000JF
SI-8000JF
5 ON/OFF
5 ON/OFF
5 ON/OFF
C3
VOUT. ON/OFF
ICs
200
V
µA
*3: Temperature Coefficient of Reference Voltage 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
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. If this pin is not
used, leave it open.
34
mV
A
VIN=24V
VSSL
Iq
mV
mV/ °C
Outflow Current
Conditions
kHZ
1.6
Low Level Voltage
at Low Voltage
%
40
VIN=24V, IO=0.5 to 1.5A
±0.5
1.6
VIN=12V
40
V
130
10
±0.5
1.6
100
VIN=8 to 30V, IO=1.0A
30
VIN=12V, IO=0.2 to 0.8A
∆VO/∆Ta*4
VIN=15V, IO=0.5A
80
VIN=8 to 30V, IO=0.5A
∆VOLOAD
Conditions
VIN=15V, IO=0.5A
67
∆VOLINE
IS1
Unit
SI-8120JF
min.
f
Conditions
SI-8050JF
max.
Conditions
Conditions
SI-8033JF
typ.
Conditions
Oscillation Frequency
Terminal
VO*2
SI-8015JF
min.
η
Efficiency
ON/OFF*5
Symbol
Soft start
C3
Soft start
+VOUT. ON/OFF
SI-8000JF Series
■External Dimensions (TO220F-5)
4.2±0.2
±0.2
2.8
±0.2
(17.9)
16.9±0.3
4.0±0.2
7.9±0.2
0.5
10.0
φ 3.2±0.2
(Unit : mm)
Pin Assignment
q VIN
w SWOUT
e GND
r VOS
t ON/OFF
(2.0)
2.6±0.1
±0.15
0.95
(8.0)
(4.6)
+0.2
0.85 –0.1
+0.2
0.45 –0.1
±0.7
P1.7
×4=6.8
±0.7
3.9±0.7
Plastic Mold Package Type
Flammability: UL94V-0
Product Mass: Approx. 2.3g
(4.3)
8.2±0.7
Forming No.1101
1 2 3 4 5
■Block Diagram
SI-8015JF
8033JF, 8050JF, 8120JF
SW OUT
VIN
1
PReg.
2
1
SW OUT
VIN
PReg.
OCP
5 ON/OFF
2
OCP
5 ON/OFF
ON/OFF
Soft
Start
Latch&
Drive
Reset
ON/OFF
Soft
Start
OSC
+
–
VREF
TSD
Comp.
Error Amp.
Latch&
Drive
Reset
OSC
+
–
4
TSD
Comp.
Error Amp.
+
–
4
+
–
VREF
VREF
GND
GND
3
3
■Typical Connection Diagram
SI-8015JF
8033JF, 8050JF, 8120JF
L1
1
VIN
SW
VIN
SI-8015JF
+
220µF
VREF
L1
2
VOUT
C4
R1
4
R2
SW
VIN
SI-8000JF
+
ON/OFF GND
5
3
1
VIN
470µF
+
C1
Di
ON/OFF GND
5
3
VS
2
VOUT
4
+
Di
C2
REF
C3
GND
GND
GND
GND
IREF
IREF shall be approx. 2mA.
C1 :
C2 :
C3 :
C4 :
L1 :
Di :
50V/220µF
25V/470µF
10V/0.47µF (Only when using soft-start function)
6800pF
VREF × (R1+R2)
100µH
VOUT=
RK16 (Sanken)
R2
C1
C2
C3
L1
Di
:
:
:
:
:
50V/220µF
25V/470µF
10V/0.47µF (Only when using soft-start function)
100µH
RK16 (Sanken)
ICs
35