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PDF UC1103 Data sheet ( Hoja de datos )
| Número de pieza | UC1103 | |
| Descripción | HIGH PRECISION CC/CV PRIMARY SIDE SWITCHING REGULATOR | |
| Fabricantes | Unisonic Technologies | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de UC1103 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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UNISONIC TECHNOLOGIES CO., LTD
UC1103
Preliminary
HIGH PRECISION CC/CV
PRIMARY SIDE SWITCHING
REGULATOR
CMOS IC
DESCRIPTION
The UTC UC1103 is a primary control unit for switch mode
charger and adapter applications. The controlled variable is
transferred by an auxiliary winding from the secondary to the
primary side. The device integrates PWM controller to enhance the
performance of discontinuous conduction mode (DCM) flyback
converters.
The UTC UC1103 operates in primary-side sensing and
regulation. Opto-coupler and TL431 could be eliminated. It also
provides off-time modulation to linearly decrease PWM frequency
under light-load conditions so that low standby power can be
achieved.
The UTC UC1103 achieves high precision CV/CC regulation
and high power efficiency. It offers comprehensive protection
coverage with auto-recovery features including Cycle-by-cycle
current limiting, VDD over voltage protection, VDD clamp, OTP,
leading edge blanking, VDD under voltage lockout, etc.
SOP-8
FEATURES
* High voltage startup
* ±5% constant voltage regulation at universal AC input
* High precision constant current regulation at universal AC input
* Primary side control without TL431 and opto-coupler
* Programmable CV and CC regulation
* Programmable cable compensation in CV mode
* Flyback topology in DCM operation
* Frequency hopping to reduce system EMI
ORDERING INFORMATION
* Driver MOSFET switch
* Built-in leading edge blanking
* Built-in primary winding inductance
compensation
* Gate output maximum voltage clamped at 15V
* Cycle-by-cycle current limiting
* Over voltage protection
* VDD under-voltage lockout
Ordering Number
UC1103G-S08-R
Package
SOP-8
Packing
Tape Reel
UC1103G-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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UC1103
Preliminary
CMOS IC
ELECTRICAL CHARACTERISTICS(Cont.)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNIT
GATE DRIVE SECTION
Output Voltage Low
Output Voltage High
Rising Time
Falling Time
Output Clamp Voltage
VOL
VOH
tR
tF
VCLAMP
VDD=15V, Io_sink=20mA
VDD=15V, Io_source=20mA
CL=1nF
CL=1nF
VDD=25V
1.5 V
5V
200 250 nS
60 100 nS
16 18 V
OTP SECTION
Threshold Temperature of OTP (Note)
TOTP
+150
°C
Note: When the over-temperature protection is activated, the power system enters auto restart mode and output is
disabled.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet UC1103.PDF ] | |
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