BD9271KUT Datasheet PDF - ROHM Semiconductor
Part Number | BD9271KUT | |
Description | White LED Diver | |
Manufacturers | ROHM Semiconductor | |
Logo | ||
There is a preview and BD9271KUT download ( pdf file ) link at the bottom of this page. Total 30 Pages |
Preview 1 page No Preview Available ! 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:
9.0V~35.0V
3.0V~3.6V
100~10000kHz
2.4mA(typ.)
-40℃~+85℃
Applications
TV, PC display
Other LCD backlight
Typical Application Circuit
Features
■ 16-ch constant current driver (external FET(NMOS)is
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 structure:Silicon monolithic integrated circuit
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product is not designed protection against radioactive rays
1/34
TSZ02201-0F1F0C100260-1-2
22.Jul.2015 Rev.006
|
|
BD9271KUT
Internal Equivalent Circuit Diagram
G1~G16
VREF5V
COMP1, COMP2
Datasheet
D1~D16
LSP
VREF5V
2MΩ
LSP
500kΩ
GND
CS, CLK, DI
DVDD
DVDD
CS,CLK,DI
10kΩ
S1~S16
S1~S16
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.
TSZ22111・15・001
5/34
TSZ02201-0F1F0C100260-1-2
22.Jul.2015 Rev.006
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for BD9271KUT electronic component. |
Information | Total 30 Pages | |
Link URL | [ Copy URL to Clipboard ] | |
Download | [ BD9271KUT.PDF Datasheet ] |
Share Link :
Electronic Components Distributor
An electronic components distributor is a company that sources, stocks, and sells electronic components to manufacturers, engineers, and hobbyists. |
SparkFun Electronics | Allied Electronics | DigiKey Electronics | Arrow Electronics |
Mouser Electronics | Adafruit | Newark | Chip One Stop |
Featured Datasheets
Part Number | Description | MFRS |
BD9271KUT | The function is White LED Diver. ROHM Semiconductor | |
Semiconductors commonly used in industry:
1N4148 |  
BAW56 |
1N5400 |
NE555 | | ||
Quick jump to:
BD92
1N4
2N2
2SA
2SC
74H
BC
HCF
IRF
KA |