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BD9874CP-V5 Datasheet (HTML) - Rohm

Part No. BD9874CP-V5
Description  Simple Step-down Switching Regulators with Built-in Power MOSFET
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Maker  ROHM [Rohm]
Homepage  http://www.rohm.com
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BD9873CP-V5,BD9874CP-V5
Technical Note
2/12
www.rohm.com
2009.07 - Rev.A
© 2009 ROHM Co., Ltd. All rights reserved.
Operating Conditions(Ta=-40~+85℃)
Parameter
Symbol
Limit
Unit
Conditions
MIN
TYP
MAX
Input Voltage
VCC
8.0
-
35.0
V
Output Voltage
Vo
1.0
-
0.8×
(VCC-Io×
Ron)
V
Electrical Characteristics(Unless otherwise noted, Ta=25℃,Vcc=12V,Vo=5V,STBY=3V)
Parameter
Symbol
Limit
Unit
Conditions
MIN
TYP
MAX
Output ON Resistance
Ron
-
1.0
1.5
Ω
BD9873
-
0.5
1.0
Ω
BD9874
Efficiency
η
80
88
-
Io=0.5A
Switching Frequency
fosc
99
110
121
kHz
Load Regulation
Δ
VOLOAD
-
5
40
mV
Vcc=20V,
Io=0.5~1.5A
BD9873
-
5
40
mV
Vcc=20V,
Io=1.0~3.0A
BD9874
Line Regulation
ΔVOLINE
-
5
25
mV
Vcc=10~30V,
Io=1.0A
Over Current Protection
Limit
Iocp
1.6
-
-
A
BD9873
3.2
-
-
A
BD9874
Over Current Protection
Limit
VINV
0.985
1.00
1.015
V
INV Pin Input Current
IINV
-
1
2
μ
A
VINV=1.0V
STBY
Pin
Threshold
Voltage
ON
VSTBYON
2.0
-
VCC
V
OFF
VSTBYOFF
-0.3
-
0.3
V
STBYPin Input Current
Istby
5
15
30
μA
STBY=3V
Circuit Current
Icc
-
5
12
mA
INV=2V
Stand-by Current
Ist
-
0
5
μ
A
STBY=0V
Soft Start Time
Tss
-
4
20
ms
STBY=0→3V
This product is not designed to be resistant to radiation.



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