SI-8205NHD_11 Datasheet, PDF (1/2 Pages) Sanken electric – Surface-Mount, Current Mode Control, Synchronous Rectifier Step-down Switching Mode Regulator ICs

1-1-3 DC/DC Converter ICs
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■Features
• Compact surface-mount (HSOP8) package
• Wide input voltage range (VIN): Vo + 3 to 43 V
• Synchronous rectifier mode
• Output current: 3 A
• Reference voltage and accuracy of 0.5 V ±1%
• Oscillation frequency: 200 kHz to 1 MHz
• A ceramic capacitor can be used for output
• Output can be disabled
• Undervoltage Lock Out
• Soft start function
■Applications
• Power supply for LCD module
• Power supply for notebook PC
• Onboard local power supplies
• Power supply for LBP/PPC
■Electrical Characteristics
1BSBNFUFS
Reference Voltage
Temperature Coefficient of Reference Voltage
Efficiency
Oscillation Frequency 1
Oscillation Frequency 2
Line Regulation
Load Regulation
Overcurrent Protection Starting Current
Quiescent Circuit Current
Outflow Current at Low Voltage
EN/SS Pin
Open Voltage
On Threshold Voltage
OVP Start Voltage
Thermal Protection Start Temperature
Error Amplifier Voltage Gain
Error Amplifier Transformer Conductance
Current Sense Amplifier Impedance
Maximum ON Duty
Minimum ON Time
■Absolute Maximum Ratings
Parameter
Input Voltage (VIN Pin)
Power Dissipation
Junction Temperature
Storage Temperature
Thermal Resistance (Junction to Lead <1 pin>)
Thermal Resistance (Junction to Ambient Air)
Symbol
VIN
PD
Tj
Tstg
θj-c
θj-a
Ratings
46
1.35
–40 to +150
–40 to +150
40
74
Unit
V
W
°C
°C
°C/W
°C/W
Conditions
When mounted on a 30 × 30 mm glass-epoxy board (with a 25 × 25 mm copper area)
When mounted on a 30 × 30 mm glass-epoxy board (with a 25 × 25 mm copper area)
■Recommended Operating Conditions
Parameter
4ZNCPM
Ratings
Unit
Input Voltage Range
7*/
8 or Vo+3 to 43
V
Output Current Range
*P
0
UP
3.0
A
Output Voltage Range
7P
0.5
UP
24
V
Operating Junction Temperature Range
5KPQ
–40 to +125
°C
Operating Temperature Range
5PQ
–40 to +85
°C
*: The minimum value of the input voltage range is 8 V or Vo + 3V, whichever is higher.
Symbol
Vref
∆VREF/∆T
η
fo1
fo2
∆VoLINE
∆VoLOAD
Is
IIN
IIN(OFF)
IEN/SS
VSSH
VC/EH
Vovp
Tj
AEA
GEA
GCS
DMAX
DMIN
min.
0.495
3.1
3.0
0.6
0.57
151
80
Ratings
typ.
0.500
±0.05
90
200
1
50
50
8
5
4.5
1.3
0.60
160
800
800
3.33
90
150
max.
0.505
6.0
40
6.0
2.0
0.63
Unit
V
mV/°C
%
kHz
MHz
mV
mV
A
mA
µA
µA
V
V
V
°C
V/V
µ"/V
A/V
%
nsec
(Ta = 25°C and fo = 500kHz, unless otherwise specified)
Conditions
VIN=12V, Io=1.0A
VIN=12V, Io=1.0A, Ta=–40 to +85°C
VIN=12V, Vo=5V, Io=1.0A
VIN=12V, Vo=5V, Io=1A, Rfset=375kΩ
VIN=12V, Vo=5V, Io=1A, Rfset=75kΩ
VIN=8 to 43V, Vo to 5V, Io=1A
VIN=12V, Vo=5V, Io=0.1 to 3.0A
VIN=12V, Vo=5V
VIN=12V, Vcomp=0V
VIN=12V, VEN/ss=0V
VEN/SS=0V, VIN=12V
VIN=12V
VIN=12V
VIN=12V
VIN=12V
50 ICs