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P1482 PDF даташит

Спецификация P1482 изготовлена ​​​​«Unisonic Technologies» и имеет функцию, называемую «SYNCHRONOUS RECTIFIED STEP-DOWN CONVERTER».

Детали детали

Номер произв P1482
Описание SYNCHRONOUS RECTIFIED STEP-DOWN CONVERTER
Производители Unisonic Technologies
логотип Unisonic Technologies логотип 

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P1482 Даташит, Описание, Даташиты
UNISONIC TECHNOLOGIES CO., LTD
P1482
LINEAR INTEGRATED CIRCUIT
2A, 23V, 340KHZ
SYNCHRONOUS RECTIFIED
STEP-DOWN CONVERTER
„ DESCRIPTION
The UTC P1482 is a synchronous buck regulator. The device
provides 2A of continuous load current over a wide input voltage
of 6V~24V. Current mode control provides fast transient response
and cycle-bycycle current limit. An adjustable soft-start prevents
inrush current at turn-on.
The UTC P1482 can provide low-ripple power, high efficiency,
and perfect transient characteristics. The duty ratio varies linearly
from 0% to 92% in the PWM control. The error amplifier circuit
and soft-start circuit included in this device can prevent overshoot
at startup. An enable function, an over current protect (OCP)
function and short circuit protect (SCP) are also build inside, and
when OCP happens, the operation frequency will be reduced.
„ FEATURES
* 2A Output Current
* Wide 6V~23V Operating Input Range
* Integrated Power MOSFET Switches
* Programmable Soft-Start
* Stable with Low ESR Ceramic Output Capacitors
* Fixed 340KHz Frequency
* Cycle-by-Cycle Over Current Protection
„ ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
P1482L-S08-R
P1482G-S08-R
P1482L-S08-T
P1482G-S08-T
Package
SOP-8
SOP-8
SOP-8
Packing
Tape Reel
Tube
www.unisonic.com.tw
Copyright © 2013 Unisonic Technologies Co., Ltd
1 of 5
QW-R103-057.E
Free Datasheet http://www.Datasheet4U.com









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P1482 Даташит, Описание, Даташиты
P1482
„ PIN CONFIGURATION
LINEAR INTEGRATED CIRCUIT
„ PIN DESCRIPTION
PIN NO.
1
2
3
4
5
6
7
8
PIN NAME
NC
VIN
SW
GND
FB
COMP
EN
SS
No Bonding
IC power supply pin.
Power Switching Output.
Ground.
Feedback Input.
Compensation Node.
Enable Input.
Soft-Start Control Input.
„ BLOCK DIAGRAM
DESCRIPTION
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 5
QW-R103-057.E
Free Datasheet http://www.Datasheet4U.com









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P1482 Даташит, Описание, Даташиты
P1482
LINEAR INTEGRATED CIRCUIT
„ ABSOLUTE MAXIMUM RATING (TA=25°C, unless otherwise specified)
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
Switch Node Voltage
VIN -0.3~+23 V
VSW 23 V
All Other Pins
-0.3~+6
V
Continuous Power Dissipation
PD
1.4 W
Junction Temperature
Storage Temperature
TJ
TSTG
150
-65~+150
°C
°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 DATA
PARAMETER
Junction to Ambient
Junction to Case
SYMBOL
θJA
θJC
RATING
90
45
UNIT
°C/W
°C/W
„ RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
RATING
Input Voltage
VIN 6~23
Output Voltage
VOUT
0.923~20
Ambient Operating Temperature
TOPR
-40~+85
Note: The device is not guaranteed to function outside of its operating conditions.
UNIT
V
V
°C
„ ELECTRICAL CHARACTERISTICS (VIN=12V, TA=25°C, unless otherwise specified)
PARAMETER
Supply Current
Feedback Voltage
High-Side Switch On Resistance (Note 1)
Low-Side Switch On Resistance (Note 1)
High-Side Switch Leakage Current
Upper Switch Current Limit
Lower Switch Current Limit
COMP to Current Sense
Transconductance
Oscillation Frequency
Short Circuit Oscillation Frequency
Maximum Duty Cycle
EN Shutdown Threshold Voltage
Input Under Voltage Lockout Threshold
Soft-Start Current
Thermal Shutdown (Note)
Note: Guaranteed by design, not tested.
SYMBOL
VFB
RDS(ON)1
RDS(ON)2
GCS
FOSC1
FOSC2
DMAX
TEST CONDITIONS
VEN=2.0V, VFB=1.0V
6V VIN 23V
VEN=0V, VSW=0V
Minimum Duty Cycle
From Drain to Source
VFB=0V
VFB=1.0V
VEN Rising
VIN Rising
VSS=0V
MIN TYP MAX UNIT
3.5 5 mA
0.900 0.923 0.946 V
110 m
100 m
10 μA
2.4 3.4
A
1.1 A
5 A/V
305 340 375 KHz
40 KHz
92 %
0.7 0.9 2.0 V
4V
15 μA
160 °C
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3 of 5
QW-R103-057.E
Free Datasheet http://www.Datasheet4U.com










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