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PDF BD3925FP-C Data sheet ( Hoja de datos )
| Número de pieza | BD3925FP-C | |
| Descripción | Voltage Tracker | |
| Fabricantes | ROHM Semiconductor | |
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Datasheet
Voltage Tracker
BD3925FP-C BD3925HFP-C
General Description
BD3925FP-C and BD3925HFP-C are voltage trackers
for automotive use which have high withstand-voltage of
up to 50V. They offer an output current loading of up to
500mA while limiting the quiescent current to 45µA
(Typ).
BD3925FP-C and BD3925HFP-C are suited for
systems that are permanently connected to the car
battery and require low-current-consumption. The offset
is ±10mV (for 5V output, 6V < VCC < 36V, 5mA < lOUT <
200mA). They integrate folded–type over-current
protection to minimize heat dissipation when
accidentally shorted, thus offering the most robust
power-supply design under harsh automotive
environment.
Features
■ Low-Saturation Voltage Type P-Channel DMOS
Output Transistors
■ Low Offset Voltage: ± 10mV(for 5V Output,
6V< VCC <36V, 5mA<lOUT<200mA)
■ VCC Power Supply Voltage = 50 V
■ Integrated Over-Current Protection Circuit and
Thermal Shutdown Circuit
Applications
Onboard vehicle devices (body-control, car stereos,
satellite navigation systems, etc.)
Key Specifications
Input Supply Voltage Range:
Ultra-Low Quiescent Current:
Operating Temperature Range:
4.5V to 36V
45µA (Typ)
-40°C to +125°C
Packages
W(Typ) x D(Typ) x H(Max)
TO252-5
HRP5
6.50mm x 9.50mm x 2.50mm 9.395mm x 10.540mm x 2.005mm
Ordering Information
BD3 9 2 5 x x x-
Cxx
Part Number
Package
HFP :HRP5
FP :TO252-5
Packaging and forming specification
TR: Embossed tape and reel
(HRP5)
E2: Embossed tape and reel
(TO252-5)
Lineup
Package
TO252-5
Reel of 2000
HRP5
Reel of 2000
Orderable Part Number
BD3925FP-CE2
BD3925HFP-CTR
○Product structure：Silicon monolithic integrated circuit
.www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product has no designed protection against radioactive rays
1/15
TSZ02201-0G1G0AN00430-1-2
20.Oct.2014 Rev.001
1 page  
BD3925FP-C BD3925HFP-C
Typical Performance Curves – continued
Unless otherwise specified, VCC=13.2V, VADJ=5V, VSW=3V, Ta=25°C
70
Ta=125°C
60
Ta=25°C
50
40 Ta=-40°C
30
20
10
0
10 100 1000 10000 100000 1000000
FFRrEeqQuUeEnNcyCY: f: f[H[Hzz]]
Figure 7. Ripple Rejection vs Frequency
6
5
4
Ta=-40°C
3
2 Ta=25°C
1 Ta=125°C
0
01 23
SUSPupPpLYlyVVOoLltTaAgGe E: :VVSSWW [[VV]]
Figure 8. Output Voltage vs SW Input Voltage
140
120
Ta=125°C
100
80 Ta=25°C
60
Ta=-40°C
40
20
0
0 100 200 300 400 500
OOUuTtpPuUtTCCurUreRnRtE: NIOTU:TIo[m[mAA] ]
Figure 9. Circuit Current vs Output Current
(Circuit Current Classified by Load)
6
5
4
3
2
1
0
100 120 140 160 180 200
AAMmBbIEieNnTt TTeEmMpPeErRatAuTreUR: TEa: T[°aC[]℃]
Figure 10. Output Voltage vs Ambient Temperature
(Thermal Shutdown Circuit)
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/15
TSZ02201-0G1G0AN00430-1-2
20.Oct.2014 Rev.001
5 Page 
BD3925FP-C BD3925HFP-C
Operational Notes – continued
16. About Positive Surge Voltage
To protect against a surge voltage that exceeds 50V between VCC and GND please insert a power zener diode
between VCC terminal and GND.
VCC
D1
GND
17. Negative Voltage Surges on VCC Pin
A schottky barrier diode should be inserted between VCC and GND for protection against voltages lower than GND at
the VCC pin.
VCC
D1
GND
18. For Very Small Fluctuations of Output Voltage
When the application is used where very small fluctuations of output voltage caused by some factors (e.g.
disturbance noise, input voltage fluctuations, load fluctuations, etc.), please take enough measures to avoid some
influence (e.g. insert the filter, etc.).
19. Output Protection Diode
Output loads with large inductive component may cause reverse current flow to the output pin during startup or
shutdown. In such cases, a protection diode should be inserted at the output to protect the IC.
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/15
TSZ02201-0G1G0AN00430-1-2
20.Oct.2014 Rev.001
11 Page | ||
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| PDF Descargar | [ Datasheet BD3925FP-C.PDF ] | |
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