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U9751B の電気的特性と機能

U9751BのメーカーはUnisonic Technologiesです、この部品の機能は「DOUBLE CHANNELS PWM CONTROLLER」です。


製品の詳細 ( Datasheet PDF )

部品番号 U9751B
部品説明 DOUBLE CHANNELS PWM CONTROLLER
メーカ Unisonic Technologies
ロゴ Unisonic Technologies ロゴ 




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U9751B Datasheet, U9751B PDF,ピン配置, 機能
UNISONIC TECHNOLOGIES CO., LTD
U9751B
LINEAR INTEGRATED CIRCUIT
DOUBLE CHANNELS PWM
CONTROLLER
DESCRIPTION
The UTC U9751B consists of two PWM control circuits. Two
PWM controllers is independent each other. It is low cost in many
applications.
FEATURES
* Switch frequency: 400KHz
* ISINK =400mA
* Wide work voltage
* Programmable dead-time control
* UVLO protection
* SCP protection
* Lower static supply current
SOP -16
DIP-16
SSOP-16(150mil)
*Pb-free plating product number: U9751BL
APPLICATION
* DC/DC converters for video cameras backlight inwvwewr.DteatarShaenet4dU.com
notebook computers etc.
ORDER INFORMATION
Order Number
Normal
Lead Free Plating
U9751B-D16-T
U9751BL-D16-T
U9751B-S16-R
U9751BL-S16-R
U9751B-S16-T
U9751BL-S16-T
U9751B-R16-R
U9751BL-R16-R
U9751B-R16-T
U9751BL-R16-T
Package
DIP-16
SOP-16
SOP-16
SSOP-16
SSOP-16
Packing
Tube
Tape Reel
Tube
Tape Reel
Tube
U9751BL-D16-R
(1)Packing Type
(2)Package Type
(3)Lead Plating
(1) R: Tape Reel, T: Tube
(2) D16: DIP-16, S16: SOP-16, R16: SSOP-16
(3) L: Lead Free Plating, Blank: Pb/Sn
www.unisonic.com.tw
Copyright © 2005 Unisonic Technologies Co., Ltd
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U9751B pdf, ピン配列
U9751B
BLOCK DIAGRAM
16 15
Reference
Voltage
Iscp
UVLO
14 13
R
S
Shutdown
LINEAR INTEGRATED CIRCUIT
12 11 10 9
PWM
COMP
Oscillator
+-
+
1.2V VREF
+
-
PWM
COMP
1 2 34
5 678
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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U9751B 電子部品, 半導体
U9751B
LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION
Vin
R1
33k
C3
100uF
R2
33k
C1 330pF
R4 10k
C4
R3 C6
33k 0.027uF
IC1
CT REF
RT SCP
FB1 FB2
EAINV 1
EAINV 2
EAOUT1
DTC1
EAOUT 2
DTC2
OUT1
OUT2
GND
VCC
UTC U9751 B
R5 R8
C11
R6
10k
C12
R7
10k
R10 33k
C20 . 33uF
C5
R9 33k C7 0.027uF
R13
R121 k
R11
33 k
Q1
Q2
R15
1k
Q3
R14
Q4
R16
C8 1k
R18
M1
9435
C17
100 uF
L2 20uH
D1
SCD24
Vout1
R20
10k 1 %
R25
R21 C9
3.3k 1%
C10
220 uF/16 V
R17
C14 1k
R19
M2
9435
C13
100 uF
L3 20uH
D2
SCD24
Vout 2
R22
2k 1%
R24
R23 C15
1.21 k 1%
C16
220 uF/16 V
TIMING WAVEFORM
Typical Application
Error Amplifier Output
CT Waveform
Output Waveform
(H shutdown)
SCP Waveform
SCP Enabel Output
Timing Diagram
H
L
1.3V
0V
H
L
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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部品番号部品説明メーカ
U9751B

DOUBLE CHANNELS PWM CONTROLLER

Unisonic Technologies
Unisonic Technologies


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