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P1786G-S08-R Datasheet(PDF) 4 Page - Unisonic Technologies

Part # P1786G-S08-R
Description  PWM CONTROL 3A STEP-DOWN CONVERTER
PDF  8 Pages
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Manufacturer  UTC [Unisonic Technologies]
Direct Link  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

P1786G-S08-R Datasheet(HTML) 4 Page - Unisonic Technologies

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P1786
LINEAR INTEGRATED CIRCUIT
UNISONICTECHNOLOGIESCO.,LTD
4 of 8
www.unisonic.com.tw
QW-R103-038.C
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
RATING
UNIT
VCC Pin Voltage
VCC
VSS - 0.3 ~ VSS + 25
V
Feedback Pin Voltage
VFB
VSS - 0.3 ~ VCC
V
EN Pin Voltage
VEN
VSS - 0.3 ~ VIN + 0.3
V
Switch Pin Voltage
VOUT
VSS - 0.3 ~ VIN + 0.3
V
Power Dissipation
PD
Internally limited
Operating Temperature
TOPR
-20 ~ +125
°C
Storage Temperature
TSTG
-40 ~ +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 DATA
PARAMETER
SYMBOL
RATING
UNIT
Junction to Ambient
θJA
65
°C/W
ELECTRICAL CHARACTERISTICS (VIN = 12V, TA=25°C, unless otherwise specified)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNIT
Input Voltage
VIN
4
23
V
Feedback Voltage
VFB
IOUT=0.1A
0.784 0.8 0.816
V
Feedback Bias Current
IFB(BIAS)
IOUT=0.1A
0.1
0.5
μA
Switch Current
ISC
3.5
A
Standby Current
ISTN-BY
VEN =0V
10
μA
Line Regulation
OUT
OUT
V
V
Δ
VIN = 5V~23V, IOUT=0.2A
1
2
%
Load Regulation
OUT
OUT
V
V
Δ
IOUT = 0.1 to 3A
0.2
0.5
%
Oscillation Frequency
fOSC
Measure waveform at SW pin
240
300
360
KHz
Frequency of Current Limit or Short
Circuit Protect
fOSC1
Measure waveform at SW pin
10
30
60
KHz
EN Pin Input Voltage
VSH
Evaluate oscillation at SW pin
2.0
V
VSL
Evaluate oscillation stop at SW pin
0.7
V
EN Pin Input Leakage Current
ISH
20
μA
ISL
-10
μA
OCSET Pin Bias Current
IOCSET
75
90
105
μA
Soft-Start Time
TSS
0.3
2
5
ms
Internal MOSFET RDS(ON)
RDS(ON)
VIN=5V, VFB=0V
110
150
mΩ
VIN=12V, VFB=0V
70
100
mΩ
Efficiency
η
VIN = 12V, VOUT = 5V, IOUT = 3A
91
%



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