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US3602 の電気的特性と機能

US3602のメーカーはUnisonic Technologiesです、この部品の機能は「HIGH PRECISION PSR CONSTANT CURRENT LED DRIVER」です。


製品の詳細 ( Datasheet PDF )

部品番号 US3602
部品説明 HIGH PRECISION PSR CONSTANT CURRENT LED DRIVER
メーカ Unisonic Technologies
ロゴ Unisonic Technologies ロゴ 




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US3602 Datasheet, US3602 PDF,ピン配置, 機能
UNISONIC TECHNOLOGIES CO., LTD
US3602
Preliminary
HIGH PRECISION PSR
CONSTANT CURRENT
LED DRIVER
CMOS IC
DESCRIPTION
The UTC US3602 is a primary side control offline LED lighting
controller. It operates in inductor current DCM mode and can
achieve accurate constant current.
The UTC US3602 integrates 600V power MOSFET and
simplifies the LED lighting system design by eliminating the
secondary side feedback components and the opto-coupler. The
loop compensation components are also removed while
maintaining stability overall operating conditions.
The LED current can be adjusted externally by the sense
resistor RCS at CS pin. The UTC US3602 achieves ±3% accuracy
of LED current along with excellent line regulation and load
regulation.
The UTC US3602 offers comprehensive protection coverage
with auto-recovery features including LED short circuit protection,
LED open circuit protection, Cycle-by-cycle current limiting, OTP,
VCC over voltage protection, leading edge blanking, VCC under
voltage lockout, etc.
FEATURES
* Built-in 600V Power MOSFET
* ±3% constant current regulation at universal AC input
* Primary side control without TL431 and opto-coupler
* Programmable CC regulation
* Flyback topology in DCM operation
* Low operating current to improve efficiency
* High resistance feedback resistor to improve efficiency
* LED short and open circuit protection
* Cycle-by-cycle current limiting
* Built-in leading edge blanking
* VCC over voltage protection
* VCC under-voltage lockout
* Feedback loop short circuit protection
* Current sense resistor open circuit protection
ORDERING INFORMATION
Ordering Number
US3602G-S08-R
Package
SOP-8
Packing
Tape Reel
US3602G-S08-R
(1)Packing Type
(2)Package Type
(3)Green Package
(1) R: Tape Reel
(2) S08: SOP-8
(3) G: Halogen Free and Lead Free
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
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US3602 pdf, ピン配列
US3602
BLOCK DIAGRAM
Preliminary
CMOS IC
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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US3602 電子部品, 半導体
US3602
Preliminary
CMOS IC
FUNCTION DESCRIPTION(Cont.)
Operation Switching Frequency
The UTC US3602 is designed to work in DCM flyback topology and no external loop compensation component is
required while maintaining stability. The maximum duty cycle is limited to 50%. The maximum switching frequency
should be set to less than 100KHz and the minimum switching frequency should be set to more than 20KHz. The
maximum and minimum switching frequency is limited in UTC US3602 to ensure the stability of system.
The switching frequency can be set by the formula:
f
=
Np2 × VLED
8 × Ns2 × Lp ×ILED
Where, LP is the primary winding inductance of transformer.
Protection Control
Good power supply system reliability is achieved with its comprehensive protection features including VCC
over-voltage protection, VCC Clamp, GATE Clamp, Cycle-by-cycle current limiting, LED short circuit protection, LED
open circuit protection, leading edge blanking, OTP and UVLO, etc.
VCC is supplied by transformer auxiliary winding output. The output of UTC US3602 is shutdown when VCC drops
below VTH(OFF) and the power converter enters power on start-up sequence thereafter.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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部品番号部品説明メーカ
US3602

HIGH PRECISION PSR CONSTANT CURRENT LED DRIVER

Unisonic Technologies
Unisonic Technologies


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