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What is BD9271KUT?

This electronic component, produced by the manufacturer "ROHM Semiconductor", performs the same function as "White LED Diver".


BD9271KUT Datasheet PDF - ROHM Semiconductor

Part Number BD9271KUT
Description White LED Diver
Manufacturers ROHM Semiconductor 
Logo ROHM Semiconductor Logo 


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Datasheet
LED Drivers for LCD Backlights
White LED Diver for
Backlight of Medium/Large-sized LCDs
BD9271KUT
General Description
BD9271KUT is a white LED diver used on backlight of
Medium/Large-sized LCDs. This IC can achieve
dimming function by SPI control. And through the SPI
correspondence, it can set the ON/OFF of each switch,
analog dimming and etc. The signals of PWM dimming
can set the frequency, ON time and delay of PWM by
inputting the external signals to the register.
BD9271KUT has equipped several protection functions
to deal with the abnormal states, including LED OPEN
protection, LED SHORT protection, external current
setting resistance SHORT protection, external MOS
transistor SHORT protection, etc. So it can be used in a
wide output voltage range and various load conditions.
Key Specifications
VCC power supply range
DVDD power supply range
CLK frequency setting range
Operating Circuit current range
Operating temperature range
9.0V35.0V
3.0V3.6V
10010000kHz
2.4mA(typ.)
-40℃~+85
Applications
TV, PC display
Other LCD backlight
Typical Application Circuit
Features
16-ch constant current driver (external FET(NMOSis
equipped.)
LED voltage can be set externally.
PWM dimming and Analogue dimming can be
controlled by SPI.
LED Abnormal operation detection circuit (OPEN
protection/ SHORT protection) is equipped.
LED SHORT protection detection voltage is adjustable
(LSP terminal)
LED SHORT protection detection CH
FAIL INDICATION function is equipped by ERR_DET
terminal.
3 lines serial interface
Package: TQFP64U
Package
TQFP64U
Pin Pitch
W(Typ.) D(Typ.) H(Max.)
9.00mm×9.00mm×1.20mm
0.4mm
Figure 1. TQFP64U
Figure 2. Typical Application Circuit
Product structureSilicon monolithic integrated circuit
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product is not designed protection against radioactive rays
1/34
TSZ02201-0F1F0C100260-1-2
22.Jul.2015 Rev.006

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BD9271KUT equivalent
BD9271KUT
Internal Equivalent Circuit Diagram
G1G16
VREF5V
COMP1, COMP2
Datasheet
D1D16
LSP
VREF5V
2MΩ
LSP
500kΩ
GND
CS, CLK, DI
DVDD
DVDD
CS,CLK,DI
10kΩ
S1~S16
S1S16
VREF5V
10kΩ
GND GND
GND
STB
STB
500k
1M
GND GND
GND
GND
DO
DVDD
DVDD
DO
50Ω
VSYNC, HSYNC
DGND
DGND
ERR_DET
DGND
GND
Figure 5. Pin ESD Type
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
5/34
TSZ02201-0F1F0C100260-1-2
22.Jul.2015 Rev.006


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Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for BD9271KUT electronic component.


Information Total 30 Pages
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Featured Datasheets

Part NumberDescriptionMFRS
BD9271KUTThe function is White LED Diver. ROHM SemiconductorROHM Semiconductor

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