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Numéro de référence | MBI6703 | ||
Description | DC-DC Boost Controller | ||
Fabricant | Macroblock | ||
Logo | |||
Macroblock
Preliminary Datasheet
MBI6703
DC-DC Boost Controller with Min. Selector
Features
z 10V~30V wide input voltage range
z Adjustable switching frequency: 75KHz to 250KHz
z Peak current mode control
z External soft-start function
z Drive external power MOSFET
z Minimum selector supports up to 4 feedback inputs
z Full protections:
Under voltage lockout, UVLO
Over temperature protection, OTP
Over voltage protection, OVP
Over current protection, OCP
Input voltage protection, IVP
z TSSOP-24 package
Thin Shrink SOP
GTS: TSSOP24L-173-0.65
Product Description
MBI6703 is a frequency-adjustable, peak current mode step-up DC/DC controller to drive external constant current
LED drivers, ex. MBI1838, with multi-strings. It is designed for large LCD panels that employ an array of LEDs as the
light source. MBI6703 accepts wide input voltage range from 10V to 30V.
MBI6703 can receive external pulse width modulation (PWM) dimming control signal to turn on/off the output voltage
according to the dimming.
MBI6703 is built with complete protection features to protect the controller from fault situations. The soft-start
function eliminates the inrush current while the power is on. The integrated protections, UVLO, OVP, OCP, OTP, and
IVP, avoid MBI6703 from being damaged from fault conditions.
MBI6703 supports 4 external feedbacks from the external constant current LED drivers in parallel, and builds in a
minimum voltage selector to choose the lowest voltage to make sure all the arrays of LEDs are well controlled.
MBI6703 drives an external MOSFET, which provides good efficiency and maximizes operating voltage. The feature
of selectable switching frequency allows optimization of the component size and system efficiency.
MBI6703 is available in a TSSOP-24L-173-0.65 package.
Applications
z LCD TV
©Macroblock, Inc. 2010
Floor 6-4, No. 18, Pu-Ting Rd., Hsinchu, Taiwan 30077, ROC.
TEL: +886-3-579-0068, FAX: +886-3-579-7534, E-mail: [email protected]
- 1 - December 2010, V1.00
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Pages | Pages 19 | ||
Télécharger | [ MBI6703 ] |
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