SI-8100QL Datasheet, PDF (1/2 Pages) Sanken electric – Current Mode Control Step-down Switching Mode Regulator ICs

1-1-2 Switching Mode Regulator ICs
SI-8100QL Series Current Mode Control Step-down Switching Mode Regulator ICs
■Features
• DIP8 package
• Introduction of current mode control method
• Output current: 3.5A
• High efficiency: 90% (Vo=5V)
• Built-in reference oscillator (350kHz)
• Built-in drooping-type overcurrent and thermal
protection circuits
• Built-in soft start circuit
• Built-in on/off function (Active Hi)
• Low current consumption during off
■Applications
• DVD recorder, FPD-TV
• Onboard local power supplies
• OA equipment
■Electrical Characteristics
Parameter
Reference Voltage
Temperature Coefficient of Reference Voltage
Efficiency
Oscillation Frequency
Line Regulation
Load Regulation
Overcurrent Protection Starting Current
Quiescent Circuit Current
SS Pin
Outflow Current at Low Voltage
High Level Voltage
EN Pin
Low Level Voltage
Inflow Current at Low Voltage
Error Amplifier Voltage Gain
Error Amplifier Transformer Conductance
Current Sense Amplifier Impedance
Maximum ON Duty
Minimum ON Time
■Absolute Maximum Ratings
Parameter
Symbol
Input Voltage
VIN
Power Dissipation^*1
PD
Junction Temperature^*2
Tj
Storage Temperature
Tstg
Thermal Resistance (Junction to Case) θj-c
Thermal Resistance (Junction to Ambient Air) θj-a
Ratings
30
1.56
–30 to +150
–40 to +150
25
64
Unit
V
W
°C
°C
°C/W
°C/W
Conditions
When mounted on glass-epoxy board measuring 70×60 mm (copper laminate area: 1310 mm²)
When mounted on glass-epoxy board measuring 70×60 mm (copper laminate area: 1310 mm²)
*1: Limited by thermal protection circuit
*2: Note that the detect temperature for thermal protection is about 140°C.
■Recommended Operating Conditions
Parameter
Symbol
Ratings
Unit
SI-8105QL
Input Voltage Range
VIN
Vo+1^*1 to 28
V
Output Voltage Range
Vo
0.5 to 24
V
Output Current Range
Io
0 to 3.5
A
Operating Junction Temperature Range Tjop
–30 to +125
°C
Operating Temperature Range Top
–30 to +85
°C
*1: The minimum value of the input voltage range is 4.75 V or Vo +1 V, whichever is higher.
Symbol
VADJ
Conditions
(∆VADJ/∆T)
Conditions
η
Conditions
fo
Conditions
∆VoLINE
Conditions
∆VoLOAD
Conditions
Is
Conditions
Iq
Conditions
Iq(OFF)
Conditions
ISSL
Conditions
VC/EH
Conditions
VC/EL
Conditions
IC/EH
Conditions
AEA
GEA
1/GCS
DMAX
DMIN
min.
0.485
315
3.6
2.8
Ratings
SI-8105QL
typ.
0.500
VIN=12V, Io=1A
0.05
VIN=12V, Io=1A, Ta=–40 to +85°C
90
VIN=12V, Io=1A
350
VIN=16V, Io=1A
30
VIN=8 to 28V, Io=1A
30
VIN=12V, Io=0.1 to 3.5A
VIN=12V
18
VIN=12V, Io=0A, VEN=open
VIN=12V, Io=0A, VEN=0V
5
VIN=12V, VSSL=0V
VIN=12V
VIN=12V
5
VEN=0V
1000
800
0.35
92
100
max.
0.515
385
60
60
6.0
20
2.2
Conditions
(When Ta=25°C and Vo=5V)
Unit
V
mV/ °C
%
kHz
mV
mV
A
mA
µA
µA
V
V
µA
V/V
µA/V
V/A
%
nsec.
*: Pin 8 is the SS pin. Soft start at power on can be performed with a capacitor connected to this pin.
The SS pin is pulled up to the power supply in the IC, so applying the external voltage is prohibited.
SI-8100QL
8 SS
C5
Soft start
72 ICs