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PWM Controller. BIT3267 Datasheet

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PWM Controller. BIT3267 Datasheet






BIT3267 Controller. Datasheet pdf. Equivalent




BIT3267 Controller. Datasheet pdf. Equivalent





Part

BIT3267

Description

High Performance PWM Controller



Feature


Beyond Innovation Technology Co., Ltd. High Performance PWM Controller Versio n: A3 Please read the notice stated in this preamble carefully before accessi ng any contents of the document attache d. Admission of BiTEK’s statement the rein is presumed once the document is r eleased to the receiver. 2013/01/06 T his is an ONE-TIME copy. Updates will n ot be provided Conf.
Manufacture

Beyond Innovation Technology

Datasheet
Download BIT3267 Datasheet


Beyond Innovation Technology BIT3267

BIT3267; idential page 1 of 8 Beyond Innovation Technology Co., Ltd. Notice: Firstly, the information furnished by Beyond Inn ovation Technology Co. Ltd. (BiTEK) in this document is believed to be accurat e and reliable and subject to BiTEK’s amendment without prior notice. And th e aforesaid information does not form a ny part or parts of any quotation or co ntract between BiTEK.


Beyond Innovation Technology BIT3267

and the information receiver. Further, no responsibility is assumed for the us age of the aforesaid information. BiTEK makes no representation that the inter connect of its circuits as described he rein will not infringe on exiting or fu ture patent rights, nor do the descript ions contained herein imply the grantin g of licenses to make, use or sell equi pment constructed .


Beyond Innovation Technology BIT3267

in accordance therewith. Besides, the pr oduct in this document is not designed for use in life support appliances, dev ices, or systems where malfunction of t his product can reasonably be expected to result in personal injury. BiTEK cus tomers’ using or selling this product for use in such applications shall do so at their own risk and agree to fully indemnify BiTEK for.

Part

BIT3267

Description

High Performance PWM Controller



Feature


Beyond Innovation Technology Co., Ltd. High Performance PWM Controller Versio n: A3 Please read the notice stated in this preamble carefully before accessi ng any contents of the document attache d. Admission of BiTEK’s statement the rein is presumed once the document is r eleased to the receiver. 2013/01/06 T his is an ONE-TIME copy. Updates will n ot be provided Conf.
Manufacture

Beyond Innovation Technology

Datasheet
Download BIT3267 Datasheet




 BIT3267
Beyond Innovation Technology Co., Ltd.
High Performance PWM Controller
Version: A3
Please read the notice stated in this preamble carefully before
accessing any contents of the document attached.
Admission of BiTEK’s statement therein is presumed once the
document is released to the receiver.
2013/01/06
Confidential
This is an ONE-TIME copy. Updates will not be provided
page 1 of 8




 BIT3267
Beyond Innovation Technology Co., Ltd.
Notice:
Firstly, the information furnished by Beyond Innovation Technology Co. Ltd. (BiTEK) in this document is believed to be
accurate and reliable and subject to BiTEK’s amendment without prior notice. And the aforesaid information does not
form any part or parts of any quotation or contract between BiTEK and the information receiver.
Further, no responsibility is assumed for the usage of the aforesaid information. BiTEK makes no representation that
the interconnect of its circuits as described herein will not infringe on exiting or future patent rights, nor do the
descriptions contained herein imply the granting of licenses to make, use or sell equipment constructed in accordance
therewith.
Besides, the product in this document is not designed for use in life support appliances, devices, or systems where
malfunction of this product can reasonably be expected to result in personal injury. BiTEK customers’ using or selling
this product for use in such applications shall do so at their own risk and agree to fully indemnify BiTEK for any damage
resulting from such improper use or sale.
At last, the information furnished in this document is the property of BiTEK and shall be treated as highly
confidentiality; any kind of distribution, disclosure, copying, transformation or use of whole or parts of this document
without duly authorization from BiTEK by prior written consent is strictly prohibited. The receiver shall fully compensate
BiTEK without any reservation for any losses thereof due to its violation of BiTEK’s confidential request. The receiver is
deemed to agree on BiTEK’s confidential request therein suppose that said receiver receives this document without making
any expressly opposition. In the condition that aforesaid opposition is made, the receiver shall return this document to
BiTEK immediately without any delay.
2013/01/06
Confidential
This is an ONE-TIME copy. Updates will not be provided
page 2 of 8




 BIT3267
Beyond Innovation Technology Co., Ltd.
Features:
Current mode PWM controller
8V ~ 28V operation voltage
Over current protection, OCP
Over voltage protection, OVP
Load short protection, LSP
Frequency selection
Internal soft-start
Over temperature protection, OTP
Internal under voltage lock out, UVLO
Totem pole output
SOP-8 package
Pin layout:
1 OUT
2 GND
3 OCP
4 OVP
VDD
EA
CMP
INN
8
7
6
5
General description:
The BIT3267 is a high frequency PWM
controller integrates required functions for boost
conversion in a small SOP-8 package. A low
0.21V feedback voltage, over voltage protection
and over current protection and load short
protection make BIT3267 to be an ideal
controller for LED backlight supplies. Frequency
selection is flexible in variable system design.
Internal soft start function can avoid inrush
current happened in the start up period. Over
temperature protection and UVLO make system
reliable. CMOS process greatly reduces the
operating current when comparing to similar
products
Functional block diagram:
OVP
2V +
-
EA
OCP
0.3V
+
-
CMP
Soft start
¡
0.21V
INN
+
-
LSP protection
Recommended operating condition:
Supply voltage……………………….8V ~ 28V
Operating
Operating
afrmeqbuieenntctye…m…pe…ra…tur.e2…2.0..k-H20z/1  10k~H8z5/55  kHz
Absolute ratings
VDD…………………………...…………-0.3 ~ +28 V
GND…………………..………….………±0.3 V
OISOntpppoeeurarrtaagvtteoiinnlttggeamgajuempn…ecbrti…ieaontnu…trttee…e…mm…p…pe…e…rraa.…t…tuur…r…ee……..….….…………....+...--1-20550.530~~~  18V55D0  D  +0.3 V
Frequency
selection
Digital
control
circuit
Over
temperature
protection
Buffer
OUT
2013/01/06
Confidential
This is an ONE-TIME copy. Updates will not be provided
page 3 of 8



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