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SWITCHING REGULATOR. UC1100 Datasheet

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SWITCHING REGULATOR. UC1100 Datasheet






UC1100 REGULATOR. Datasheet pdf. Equivalent




UC1100 REGULATOR. Datasheet pdf. Equivalent





Part

UC1100

Description

LOW-POWER HIGH PRECISION CC/CV PRIMARY SIDE SWITCHING REGULATOR



Feature


UNISONIC TECHNOLOGIES CO., LTD UC1100 Preliminary CMOS IC LOW-POWER HIGH PR ECISION CC/CV PRIMARY SIDE SWITCHING REGULATOR  DESCRIPTION The UTC UC11 00 is a primary control unit for switch mode charger and adapter applications. The controlled variable is transferred by an auxiliary winding from the secon dary to the primary side. The device us es Pulse Frequency M.
Manufacture

Unisonic Technologies

Datasheet
Download UC1100 Datasheet


Unisonic Technologies UC1100

UC1100; odulation (PFM) method to build disconti nuous conduction mode (DCM) flyback pow er supplies. The UTC UC1100 operates in primary-side sensing and regulation. O pto-coupler and TL431 could be eliminat ed. It also eliminates the need of loop compensation circuitry while maintaini ng stability. The UTC UC1100 achieves e xcellent regulation and high average ef ficiency, yet meet.


Unisonic Technologies UC1100

s the requirement for no-load consumptio n less than 30mW. The UTC UC1100 achiev es high precision CV/CC regulation and high power efficiency. It offers compre hensive protection coverage with auto-r ecovery features including Cycle-by-cyc le current limiting, output over voltag e protection, feedback loop open protec tion, short circuit protection, leading edge blanking, VC.


Unisonic Technologies UC1100

C under voltage lockout, etc. 54 6 1 23 SOT-26  FEATURES * Primary side c ontrol for rectangular constant current and * Random frequency modulation to r educe system EMI constant voltage outp ut * Flyback topology in DCM operation * 30mW no-load input power feasible * Open feedback protection * Tight CC regulation performance * Built-in soft start * Sub-microa.

Part

UC1100

Description

LOW-POWER HIGH PRECISION CC/CV PRIMARY SIDE SWITCHING REGULATOR



Feature


UNISONIC TECHNOLOGIES CO., LTD UC1100 Preliminary CMOS IC LOW-POWER HIGH PR ECISION CC/CV PRIMARY SIDE SWITCHING REGULATOR  DESCRIPTION The UTC UC11 00 is a primary control unit for switch mode charger and adapter applications. The controlled variable is transferred by an auxiliary winding from the secon dary to the primary side. The device us es Pulse Frequency M.
Manufacture

Unisonic Technologies

Datasheet
Download UC1100 Datasheet




 UC1100
UNISONIC TECHNOLOGIES CO., LTD
UC1100
Preliminary
CMOS IC
LOW-POWER HIGH PRECISION
CC/CV PRIMARY SIDE
SWITCHING REGULATOR
DESCRIPTION
The UTC UC1100 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 uses Pulse Frequency Modulation (PFM)
method to build discontinuous conduction mode (DCM) flyback
power supplies.
The UTC UC1100 operates in primary-side sensing and
regulation. Opto-coupler and TL431 could be eliminated. It also
eliminates the need of loop compensation circuitry while
maintaining stability. The UTC UC1100 achieves excellent
regulation and high average efficiency, yet meets the requirement
for no-load consumption less than 30mW.
The UTC UC1100 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, output over voltage protection, feedback loop open
protection, short circuit protection, leading edge blanking, VCC
under voltage lockout, etc.
54
6
1 23
SOT-26
FEATURES
* Primary side control for rectangular constant current and * Random frequency modulation to reduce system EMI
constant voltage output
* Flyback topology in DCM operation
* 30mW no-load input power feasible
* Open feedback protection
* Tight CC regulation performance
* Built-in soft start
* Sub-microampere start-up current
* Short circuit protection
* Eliminates control loop compensation circuitry
* Eliminates opto-coupler and secondary CV/CC control
circuitry
ORDERING INFORMATION
Ordering Number
UC1100G-AG6-R
Package
SOT-26
Packing
Tape Reel
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
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 UC1100
UC1100
MARKING INFORMATION
Preliminary
PIN CONFIGURATION
CMOS IC
PIN DESCRIPTION
PIN NO.
1
2, 5
3
4
6
PIN NAME
OUT
GND
VCC
CS
FB
DESCRIPTION
This pin drives the base of external power NPN switch
Ground
Supply voltage
The primary current sense
The voltage feedback from the auxiliary winding
BLOCK DIAGRAM
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 6
QW-R129-007.a




 UC1100
UC1100
Preliminary
CMOS IC
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
Voltage at CS, OUT to GND
VCC -0.3~36 V
-0.3~7
V
FB Input
-40~10
V
Output Current at OUT
Internally limited
A
ESD (Machine Model)
200 V
ESD (Human Body Model)
1000
V
Operating Junction Temperature
TOPR
150
°C
Storage Temperature
TSTG
-65~150
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
THERMAL RESISTANCES CHARACTERISTICS
PARAMETER
Junction to Ambient
SYMBOL
θJA
RATINGS
250
ELECTRICAL CHARACTERISTICS (VCC=15V, TA=25°C, unless otherwise specified.)
UNIT
°C/W
PARAMETER
SYMBOL
TEST CONDITIONS
UVLO SECTION
Start-Up Threshold
Minimal Operating Voltage
VTH (ST)
VOPR(min)
STANDBY CURRENT SECTION
Start-Up Current
Operating Current
IST VCC=VTH (ST)-0.5V, Before Start-Up
ICC(OPR) Static
DRIVE OUTPUT SECTION
OUT Maximum Current
Sink
Source
IOUT
CURRENT SENSE SECTION
Current Sense Threshold
VCS
Equivalent
Accuracy
Current
Sense
Voltage VCS, eq
VCS, eq
Note 1
Pre-Current Sense
VCS(PRE)
Leading Edge Blanking
FEEDBACK INPUT SECTION
Feedback Pin Input Leakage Current IFB VFB=4V
Feedback Threshold
VFB
Note:
The
output
current
is
given
by IOUT
=
VCS, eq
RCS
×
NP
NS
MIN TYP MAX UNIT
16 18.5 21
7.2 9 10.2
V
V
3
350 400
µA
µA
50 mA
40 60 80 mA
455 510 545 mV
3%
365 410 455 mV
500 ns
2.0 2.5 3.1
3.59 3.83 4.07
µA
V
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3 of 6
QW-R129-007.a



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