BP5302 [ROHM]
Power supply unit for LCDs; 用于LCD的电源单元
| 型号： | BP5302 |
| 厂家： | 
ROHM |
| 描述： | Power supply unit for LCDs |
| 文件： | 总4页 (文件大小：71K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Regulator ICs
Power supply unit for LCDs
BP5302 / BP5302F
The BP5302 and BP5302F are DC / DC converter units for supplying power to liquid crystal display (LCD) panels. The
ICs supply a negative voltage from a positive power supply. They are available in a single in-line package as an upright
(BP5302) or L-shaped lead (BP5302F) type.
FApplications
LCD panels in personal computers, word processors,
copiers and facsimiles
FFeatures
1) Wide input voltage range. ()5 to ) 14V)
2) Accurate output voltage. (*24 ± 0.75V)
3) High conversion efficiency. (typically 80%)
4) Built-in protection circuit.
5) Built-in ON / OFF switch.
6) Compact and light.
7) Available as an upright or L-shaped lead type.
FAbsolute maximum ratings
361
Regulator ICs
BP5302 / BP5302F
FElectrical characteristics (unless otherwise noted, Ta = 25_C and R1 and R2 resistors in the measurement circuit
FElectrical characteristics of Fig. 1 are disconnected)
FPin descriptions
362
Regulator ICs
BP5302 / BP5302F
FMeasurement circuit and application example
FOperation notes
(1) Place I / O external capacitors as near as possible
to the connection pins. In particular, make sure to mini-
mize the impedance between the input-side capacitor
(C1) and pin 9.
(2) Avoid frequent switching using the ON / OFF CTL
pin (5 times per second at the maximum).
(3) R1 and R2 resistors, which are used for changing
the output voltage, are usually not required.
(Reference valve: A length less than 50mm is recom-
mended for a copper foil of 1.0mm wide and 35µm thick.)
363
Regulator ICs
BP5302 / BP5302F
FElectrical characteristic curves
FExternal dimensions (Units: mm)
364
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