BP5250 Datasheet, PDF (1/12 Pages) Rohm – DC/DC converter

DC/DC converter
BP5250/BP5250-24
The BP5250/BP5250-24 are DC/DC converters for step-down that can drive PchFET using PWM system.
The voltage setting resistor and the combination of external power elements enable you to make any power
circuit to your liking. High-efficient DC/DC converter can be made easy by adding external components such
as I/O smoothing capacitor without designing circuit.
Applications
OA appliances(copy machine,personal computer, facsimile), AV appliances (car navigation, DVD etc.),
and industrial appliances.
Features
1) High power conversion(η=90% Vin=12V 5V/2A)
2) Power save pin(Leakage current at OFF mode : IR=10µAMAX)
3) Output voltage can be established from 1.5V to 9V in the VADJ pin.(For BP5250, however, output voltage is
limted by input voltage.)
4) With recovery type overcurrent protection function (Detection current can be established by the external
current detection resistance.)
5) Power circuit can be made easy by adding external smoothing capacitor and power element.
6) Reference voltage accuracy 1.25V±1%
Absolute maximum ratings (Ta=25°C)
Parameter
Symbol
Limits
Unit
BP5250 BP5250-24
Condition
Input voltage
Vi
24
30
V DC
ESD endurance
Vsurge
1
kV (EIAJ ED4701-1C-111A)
Operating temperature range
Topr
−40 ∼ +85
°C
Storage temperature range
Tstg
−50 ∼ +100
°C
Allowable max surface temperature Tfmax
100
°C Ambient temperature+The module self-heating ≤ Tfmax
The power saving terminal voltage
VCTL
24
30
V Vi ≥ VCTL
Recommended operating conditions (Ta=25°C)
Parameter
Symbol Min. Typ. Max.
Unit
BP5250
8
12
16
V
Input voltage
Vi
BP5250-24
20
24
27
V
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