BD7957FS-E2 Datasheet, PDF (3/17 Pages) Rohm – Simple Step-down Switching Regulators with Built-in Power MOSFET

BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5 Technical Note
●Electrical Characteristics
○BD9703FP/CP-V5/T/T-V5 (Unless otherwise noted, Ta=25℃,VCC=12V,Vo=5V,STBY=3V)
Parameter
Symbol
Limit
Unit
MIN TYP MAX
Conditions
Output ON Resistance
Ron
-
1.0
1.5
Ω design guarantee
Efficiency
η
-
86
-
% Io＝0.5A design guarantee
Switching Frequency
Load Regulation
Line Regulation
fosc
270
300
330 kHz
ΔVOLOAD
-
10
40
mV VCC=20V,Io=0.5～1.5A
ΔVOLINE
-
40
100 mV VCC=10～30V,Io=1.0A
Over Current Protection Limit
Iocp
1.6
-
-
A
INV Pin Threshold Voltage
INV Pin Threshold Voltage
Thermal Variation
INV Pin Input Current
VINV
ΔVINV
IINV
0.98 1.00 1.02 V
-
±0.5
-
% Tj=0～85℃ design guarantee
-
1
-
μA VINV=1.0V
STBY Pin
Threshold Voltage
ON
VSTBYON
2.0
-
36
V
OFF
VSTBYOFF -0.3
-
0.3
V
STBY Pin Input Current
Istby
5
25
50
μA STBY=3V
Circuit Current
Stand-by Current
Icc
-
5
12
mA
Ist
-
0
5
μA STBY＝0V
●Electrical Characteristics
○BD9702FP/CP-V5/T/T-V5 (Unless otherwise noted, Ta=25℃,VCC=12V,Vo=5V,STBY=3V)
Parameter
Symbol
Limit
Unit
MIN TYP MAX
Conditions
Output ON Resistance
Ron
-
0.5
1.5
Ω design guarantee
Efficiency
η
-
86
-
% Io＝1A design guarantee
Switching Frequency
Load Regulation
Line Regulation
fosc
88
110
132 kHz
ΔVOLOAD
-
10
40
mV VCC=20V,Io=1～3A
ΔVOLINE
-
40
100 mV VCC=10～30V,Io=1.0A
Over Current Protection Limit
Iocp
3.2
-
-
A
INV Pin Threshold Voltage
INV Pin Threshold Voltage
Thermal Variation
INV Pin Input Current
VINV
ΔVINV
IINV
0.98 1.00 1.02 V
-
±0.5
-
% Tj=0～85℃ design guarantee
-
1
-
μA VINV=1.0V
STBY Pin
Threshold Voltage
ON
VSTBYON
2.0
-
36
V
OFF
VSTBYOFF -0.3
-
0.3
V
STBY Pin Input Current
Istby
5
25
50
μA STBY=3V
Circuit Current
Stand-by Current
Icc
-
4
12
mA
Ist
-
0
5
μA STBY＝0V
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3/16
2009.04- Rev.B