USL1601 반도체 회로 부품 판매점
CONSTANT CURRENT CONTROLLER
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 Unisonic Technologies |
UNISONIC TECHNOLOGIES CO., LTD
USL1601
Preliminary
CONSTANT CURRENT
CONTROLLER FOR
NON-ISOLATED BUCK LED
DRIVER
CMOS IC
DESCRIPTION
The UTC USL1601 is a high precision constant current
non-isolated buck LED driver controller. It can operate under
universal AC input, also can operate 12V~600V DC input. The UTC
USL1601 integrates 600V power MOSFET, so it can use very few
external components achieve excellent constant current
performance.
The UTC USL1601 uses high precision current sense circuit and
patent method for constant current control, to achieve high precision output current and excellent line regulation.
The UTC USL1601 operates in inductor current critical mode. The LED current is constant over wide range of
inductance variation and the LED output voltage, so the load regulation is excellent.
The UTC USL1601 operation current is 200µA only, so the auxiliary winding is not needed. It can simplify the
system design and reduce the system cost.
The UTC USL1601 offers rich protection functions, including LED short circuit protection, current sense resistor
short circuit protection and over temperature protection.
FEATURES
* Inductor current critical mode, No need to compensate the
inductance variation
* 600V MOSFET integrated
* ±3% LED current accuracy
* Source driver structure, Not need the auxiliary winding for VCC
ORDERING INFORMATION
* LED short circuit protection
* Up to 93% system efficiency
* Current sense resistor short circuit protection
* Over temperature protection
Ordering Number
USL1601G-S08-R
Package
SOP-8
Packing
Tape Reel
MARKING
www.unisonic.com.tw
Copyright © 2014 Unisonic Technologies Co., Ltd
1 of 6
QW-R125-033.a
USL1601
PIN CONFIGURATION
Preliminary
CMOS IC
PIN DESCRIPTION
PIN NO.
1
2
3
4
5, 6
7, 8
PIN NAME
GND
LN
VCC
SOURCE
DRAIN
CS
DESCRIPTION
Ground
Line compensation sense input
Power supply, clamp to 12.5V by internal Zener diode
Internal HV power MOSFET source
Internal HV power MOSFET drain
Current sense input, the sense resistor is connected from CS to ground
BLOCK DIAGRAM
DRAIN
VCC
GND
+
8V -
7V -
OTP
SCP
UVLO
Restart
Constant
Current &
Logic
Control
Line
Compensation
LN
LEB
+
Current
Sense-
400mV +-
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
SOURCE
CS
2 of 6
QW-R125-033.a
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제조업체: Unisonic Technologies
( unisonic )
USL1601 controller
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[ USL1601.PDF ]
[ USL1601 다른 제조사 검색 ]
국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
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