UC3658 반도체 회로 부품 판매점
HIGH EFFICIENCY
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 Unisonic Technologies |
UNISONIC TECHNOLOGIES CO., LTD
UC3658
Preliminary
3A, 1MHz, HIGH EFFICIENCY
DESCRIPTION
The UTC UC3658 is a high-efficiency 1MHz synchronous
step-down DC-DC regulator IC capable of delivering up to 3A
output current. The UTC UC3658 operates over a wide input
voltage ranging form 3~5.5V and integrate main switch and
synchronous switch with very low RDS(ON) to minimize the
conduction loss.
Low output voltage ripple and small external inductor and
capacitor sizes are achieved with 1MHz switching provides the
system reset function and facilitates the output sequencing design.
FEATURES
* Low RDS(ON) for internal switches (top/bottom) 100mΩ/70mΩ, 3A
* 3~5.5V input voltage range
* 1MHz switching frequency minimizes the external components
* Internal softstart limits the inrush current
*100% dropout operation
* Output power good indicator
* RoHS compliant and halogen free
* Compact and thermally enhanced SO8 package with exposed
paddle
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
UC3658L-SH2-R
UC3658G-SH2-R
Package
HSOP-8
CMOS IC
Packing
Tape Reel
MARKING INFORMATION
PACKAGE
HSOP-8
MARKING
www.unisonic.com.tw
Copyright © 2014 Unisonic Technologies Co., Ltd
1 of 4
QW-R502-A75.a
Free Datasheet http://www.Datasheet4U.com
UC3658
PIN CONFIGURATION
Preliminary
NC 1
IN 2
LX 3
GND 4
GND
8 PG
7 EN
6 NC
5 FB
CMOS IC
PIN DESCRIPTION
PIN NO.
1, 6
2
3
4, paddle
PIN NAME
NC
IN
LX
GND
5 FB
7 EN
8 PG
DESCRIPTION
No connections
Input pin. Decouple this pin to GND pin with at test 1μF ceramic cap
Inductor pin. Connect this pin to the switching node of inductor
Ground pin
Output feedback pin. Connect this pin to the center point of the output resistor
divide (as shown in figure 1)to program the output voltage: VOUT=0.6*(1+R1/R2)
Enable control. Pull high to turn on. Do not float
Power good indicator. When the output voltage exceeds 90% of regulation point,
it becomes open drain; low otherwise
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 4
QW-R502-A75.a
Free Datasheet http://www.Datasheet4U.com
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제조업체: Unisonic Technologies
( utc )
UC3658 data
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[ UC3658.PDF ]
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국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
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