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PDF BP5293-50 Data sheet ( Hoja de datos )
| Número de pieza | BP5293-50 | |
| Descripción | 3 terminals DC/DC Regulator | |
| Fabricantes | ROHM Semiconductor | |
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Smart Regulator Series
7 to 26V Input, 1.0A, Fixed Output Voltage
3 terminals DC/DC Regulator
BP5293-xx Series
●General Description
The BP5293-xx series is one packaged 3terminals Buck
type DC/DC Converter built-in all parts of DC/DC
converter.
High efficiency compared with 3 terminals regulator, and
not necessary to heat sink. It’s able to rearrange without
redesign PCB, because of pin compatible. The built in
input/output capacitors and coil is contribute to compact
design.
Supplied DC7V~26V output fixed voltage which is 1.8V,
3.3V, 5.0V, 12.0V line up. The output max current is 1A.
High efficiency at light load with a SLLMTM. It is most
suitable for use in the equipment to reduce the standby
power is required.
●Features
■ 1ch Buck DC/DC Converter
■ SLLMTM control(Simple Light Load Mode)
■ Efficiency=70%(@IOUT=2mA)
■ Over current protection
■ Under voltage lockout protection
■ Soft start
■ Not need to externals parts
■ Small Package
●Applications
■ Consumer applications such as Communication, AV
appliances etc.
■ Industrial equipment
■ Amusement device
etc.
●Key Specifications
■ Input voltage range:
7V to 26 V
■ Precision voltage
±2%
■ Maximum output current
1A (Max.)
■ Operating temperature
-25°C to 85°C
●Appearance
W: 17.0mm x H: 17.8mm x T: 7.2mm (Max.)
●Line up
Output Voltage Typ.
Vo(T)
3.3V
5.0V
12.0V
Product Name
BP5293-33
BP5293-50
BP5293-12
●Typical Application Circuit
Battery
etc.
BP5293-xx
Series
VIN GND VOUT
Fuse Iout
Vout :
3.3/5.0/12.0V
VCC
Device
Fig.1 Application circuit
○Product structure : Assemble production using printed circuit board ○This product is not design for protection against radioactive rays
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
1/18
2015.07.09 Rev.001
1 page  
BP5293-xx Series
Datasheet
2) Protection circuit
The protective circuits are intended for prevention of damage caused by unexpected accidents. Do not use them
for continuous protective operation.
2-1) Short Circuit Protection Function (SCP)
The short circuit protection circuit compares the VOUT terminal voltage with internal standard voltage VSCP. When the
VOUT terminal voltage has fallen below VSCP and remained there for 0.9 msec (typ.), SCP stops the operation for
14.4 msec (typ.) and subsequently initiates a restart.
Table.1 SCP detection voltage
Product No.
SCP Detection Voltage
VSCP
BP5293-33
2.3V typ.
BP5293-50
3.5V typ.
BP5293-12
8.5V typ.
VOUT
SCP Detection Time
0.9msec(typ.)
SCP Detection Time
0.9msec(typ.)
SCP Time
14.4msec(typ.)
SCP Masking Time
2.5msec(typ.)
SCP Detection Voltage
VSCP
SCP Un-detection
STATE
Normal
Normal
(SCP detection time
count-up)
Normal
Detected
Normal
(SCP detection time
count-up)
STOP
(SCP Detected &
SCP time count-up)
Fig.6 SCP Timing Chart
Recovery
Normal
(SCP Mask time)
Normal
In the case of using big capacitor (330µF typ. Over), The VOUT rising is slow, the short protection function is maybe
available, then take care of output normally.
2-2) Under Voltage Lockout Protection (UVLO)
The under voltage lockout protection circuit monitors the VIN terminal voltage.The operation enters standby when the
VIN terminal voltage is 6.4V(typ.) or lower.The operation starts when the VIN terminal voltage is 6.6V(typ.) or higher.
Soft Start Time
2.5msec(typ.)
VIN
hys
VOUT
STATE
Un-Detected
STOP
(UVLO Detetion)
Soft Start
Detected
Un-Detected
Normal
STOP
(UVLO Detected)
Soft Start
Normal
Fig.7 UVLO Timing Chart
2-3) Over Current Protection Function (OCP)
The over current protection function is monitoring every switching terms of input current, protect by dropping output
voltage when over current detection.
2-4) Over Voltage Protection Function (OVP)
The over voltage protection function (OVP) compares VOUT terminal voltage with internal standard voltage VOVP and
when VOUT terminal voltage exceeds VOVP it turns off output. After output voltage drop it returns with hysteresis.
Table.2 OVP detection voltage
Product No.
OVP Detection Voltage
VOVP
BP5293-33
4.3V typ.
BP5293-50
6.5V typ.
BP5293-12
15.9V typ.
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
5/18
2015.07.09 Rev.001
5 Page 
BP5293-xx Series
14.0
12.0
10.0
8.0
6.0
4.0
2.0
0.0
0
Vin=17V
Vin=20V
Vin=24V
Vin=26V
500
1000
1500
Output Current [mA]
2000
On/Off continuously
Fig.21 Over Current Limit (Vout : BP5293-12)
Datasheet
7.0
6.8
6.6
6.4
6.2
6.0
-30 -20 -10 0
10 20 30 40 50 60 70 80 90
Temparature [deg]
Fig.22 UVLO Voltage (Efficiency : BP5293-12)
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
11/18
2015.07.09 Rev.001
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet BP5293-50.PDF ] | |
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