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BP5311A

Rohm
Part Number BP5311A
Manufacturer Rohm
Description DC / DC converter
Published Jan 12, 2014
Detailed Description DC / DC converter for LCDs BP5311A / BP5311XA The BP5311A and BP5311XA are DC / DC converters for supplying power to liq...
Datasheet PDF File BP5311A PDF File

BP5311A
BP5311A

Overview
DC / DC converter for LCDs BP5311A / BP5311XA The BP5311A and BP5311XA are DC / DC converters for supplying power to liquid crystal display (LCD) panels.
The modules supply a positive voltage for LCDs from a logic circuit power supply (+5).
They are available in a single in-line package as an upright (BP5311A) or L-shaped lead (BP5311XA) type.
Applications LCD panels in personal computers and word processors.
Features 1) High conversion efficiency 2) Built-in protection circuit 3) Built-in ON/OFF switch.
4) Compact and light.
5) Surface mounting is possible because parts are concentrated on one side.
6) Available as an upright or L-shaped lead type.
Absolute maximum ratings (Ta=25°C) Parameter Power supply voltage Operating temperature range Storage temperature range Symbol VIN Topr Tstg Limits 7 0~60 −30~+85 Unit V °C °C Block diagram TRANSFORMER CURRENT SENSOR SW CTRL CONTROL CIRCUIT ON / OFF 9 VIN 8 VCTL 7 GND 4 GND 3 Vref 2 VOUT 1 Co 1/4 Free Datasheet http://www.
datasheet4u.
com/ BP5311A / BP5311XA Pin descriptions Pin No.
1 2 3 4, 7 8 Pin name Co VOUT Vref GND VCTL Function Output smoothing capacitor connection pin ; connect a low-impedance capacitor with a recommended capacitance of 47µF between this and GND.
Output pin.
Output voltage adjustment pin for contrast ; output voltage is adjusted by connecting a resistor between pins 2 and 3 or pins 3 and 4.
Ground pin.
Output ON/OFF control pin ; output starts when the pin is HIGH level, and stops when the pin is LOW or OPEN.
Input pin ; connect a low-impedance capacitor with a recommended capacitance of 100µF between this pin and GND.
9 VIN Electrical characteristics Parameter Input voltage Output current Output voltage Output voltage when OFF Ripple noise voltage Efficiency ON / OFF CTL voltage when ON ON / OFF CTL voltage when OFF ON / OFF CTL current Current consumption when OFF (unless otherwise noted, Ta=25°C, VCTL=5V, R1~R2 resistors are disconnected) Symbol VIN IOUT VOUT1 VOUT2 ν1 η...


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