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BP5319

Rohm
Part Number BP5319
Manufacturer Rohm
Description DC/DC converter for LCDs
Published Mar 23, 2005
Detailed Description BP5319 / BP5319X Power Module DC/DC converter for LCDs BP5319 / BP5319X The BP5319, BP5319X is a DC/DC converter design...
Datasheet PDF File BP5319 PDF File

BP5319
BP5319

Overview
BP5319 / BP5319X Power Module DC/DC converter for LCDs BP5319 / BP5319X The BP5319, BP5319X is a DC/DC converter designed for driving liquid crystal displays(LCDs).
If this module is used, a negative power supply for LCD can be made of the power supply easily 5V.
!Applications A power supply for the LCD panels in copiers, facsimile, personal computers, word processors, musical instrument, and units.
!Features 1) High accurate output voltage (-24V±0.
75V).
2) High conversion efficiency (75%Typ).
3) An output voltage can be changed by the external resistor.
4) Built-in protect circuit.
5) Built-in ON/OFF switch.
6) Compact and light.
7) Available as an upright or L-shaped lead type.
!Absolute maximum ratings (Ta=25°C) Parameter Symbol Input voltage VIN Output current Io ON/OFF control voltage VCTL Operating temperature Topr Storage temperature Tstg Limits 7 30 7 -10∼+60 -30∼+85 Unit V mA V °C °C BP5319 / BP5319X Power Module !Electrical characteristics (Unless otherwise noted, Ta=25°C) Symbol Parameter Min.
Typ.
Input voltage VIN 4.
5 Output current IOUT Out put voltage VOUT -24.
75 -24.
00 Line regulation ∆V1 Load regulation ∆V2 Output voltage temperature -10 ∆Vt Coefficient Ripple noise voltage ν1 Conversion efficiency 70 75 η ON/OFF CTL voltage when OFF VCTL 2.
0 ON/OFF CTL voltage when ON VCTL ON/OFF CTL input current Current consumption when OFF Max.
5.
5 30 -23.
25 0.
24 0.
24 150 0.
5 150 0.
5 ∞ ∞ Unit V mA V V V mV/°C mVP-P % V V µA mA kΩ kΩ Conditions VIN=5V, IOUT=25mA VIN=4.
5∼5.
5V, IOUT=25mA VIN=5V, IOUT=0∼25mA VIN=5V, IOUT=25mA*2 VIN=5V, IOUT=25mA*1 VIN=5V, IOUT=25mA VIN=5V VIN=5V VIN=4.
5∼5.
5V, VCTL=5V*2 VIN=4.
5∼5.
5V, VCTL=5V*2 VIN=4.
5∼5.
5V, VCTL=5V*2 VIN=4.
5∼5.
5V, VCTL=5V*2 (Alternatively, when Open) ICTL IOFF R1 R2 50 50 100 - R1 resistance R2 resistance *1 Measured with a bandwidth of 20MHz.
*2 Ta = -10~60°C !Pin descriptions Pin No, Pin name 1 Co 2 3 4.
7 8 9 VOUT Vref GND VCTL VIN Function Output smoothing capacitor connection pin; connect a low-...


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