bd9211f ROHM Co. Ltd., bd9211f Datasheet

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bd9211f

Manufacturer Part Number
bd9211f
Description
Led Driver Control Ic
Manufacturer
ROHM Co. Ltd.
Datasheet

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Part Number
Manufacturer
Quantity
Price
Part Number:
BD9211F
Manufacturer:
ROHM/罗姆
Quantity:
20 000
○Absolute Maximum Ratings (Ta=25℃)
〇Recommended Operation Ranges
STRUCTURE
NAME OF PRODUCT
TYPE
FEATURE
*
It reduces gradually by 5.5 mW/℃ if above Ta= 25℃ (when mounting the board of 70.0mm×70.0mm×1.6mm)
Power supply voltage
Driver Output
Operating temperature
Storage temperature range
Maximum Junction Temperature
Power Dissipation
Power Supply
PWMIN input frequency range
Output frequency
・ Using 20V high-voltage-withstand process
・ 1Channel Push-Pull control
・ Current and voltage feedback is controlled
・ Built-in soft start circuit
・ Built-in timer latch circuit
・ Built-in shut down protection
・ Built-in UVLO detection circuit
・ Output Over Voltage Protection
・ Built-in error signal output function
・ Switching to current consumption save mode through STB pin
・ Possible to control the burst by external PWM
Silicon Monolithic Integrated Circuit
LED Driver control IC
BD9211F
Item
Item
by drive frequency modulation
F_PWMIN
Symbol
Symbol
FOUT
N1,N2
Tjmax
VCC
VCC
Topr
Tstg
Pd
REV. A
Rated voltage
-55~+150
8.0~18.0
-40~+85
60~500
25~200
Range
+150
687*
20
20
Unit
kHz
Unit
mW
Hz
V
V
V
1/4

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bd9211f Summary of contents

Page 1

Silicon Monolithic Integrated Circuit STRUCTURE LED Driver control IC NAME OF PRODUCT BD9211F TYPE ・ Using 20V high-voltage-withstand process FEATURE ・ 1Channel Push-Pull control ・ Current and voltage feedback is controlled ・ Built-in soft start circuit ・ Built-in timer latch ...

Page 2

Electrical Characteristics (VCC=12V, Ta=25℃) Parameter ( (WHOLE DEVICE) ) Circuit current during operation Circuit current during stand by operation ( (STAND BY CONTROL) ) Stand-by voltage H Stand-by voltage L ( (VCC UVLO BLOCK) ) Operating voltage (VCC) Hesteresis ...

Page 3

... Error amp input pin for lamp voltage feedback the opening time. PWM comparator input pin which controls PWM 8 PWMCMP operation during brightness adjustment Timer latch-setting pin BD9211F Lot No. SOP18 (Unit:mm) Pin Pin No name PWM signal input pin for burst bright adjustment 10 PWMIN control ...

Page 4

... About the external FET, the parasitic Capacitor may cause the gate voltage to change, when the drain voltage is switching. Make sure to leave adequate margin for this IC variation. 10. By STB voltage, BD9211F are changed to 2 states. Therefore, do not input STB pin voltage between one state and the other state (0.8~2.0V). 11. ...

Page 5

No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose ...

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