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US3702 Datasheet(PDF) 4 Page - Unisonic Technologies

Part # US3702
Description  HIGH PERFORMANCE CURRENT MODE POWER SWITCH
PDF  9 Pages
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Manufacturer  UTC [Unisonic Technologies]
Direct Link  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

US3702 Datasheet(HTML) 4 Page - Unisonic Technologies

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US3702
Preliminary
LINEAR INTEGRATED CIRCUIT
UNISONICTECHNOLOGIESCO.,LTD
4 of 9
www.unisonic.com.tw
QW-R119-022.c
Feedback Source Current
IFB
VFB=0
2
mA
VFB Open Level
VFBMAX
5.0
V
Burst-Mode Out FB Voltage
VFB(OUT) VCS =0
1.2
V
Reduce-Frequency end FB Voltage
VFB(END) VCS =0
2.4
V
Burst-Mode Enter FB Voltage
VFB(IN)
VCS =0
1.0
V
Switching
frequency
Normal initial
F(SW)
VFB=4V
69
75
81
kHz
Power-Saving
Before enter burst mode
20
kHz
Duty Cycle
DMAX
VFB=4V，vCS=0
70
75
80
%
Frequency Hopping
△
FJ(SW)
±3
±4.5
±6
%
Frequency Variation VS VCC Deviation
FDV
VCC=10~20V
5
%
Frequency
Variation
VS
Temperature
Deviation
FDT
T=-25~105°C
5
%
Soft-Start Time
TSoftS
2
4
6
ms
PROTECTION SECTION
OVP threshold
VOVP
VFB=4V
23
V
OLP threshold
VFB(OLP)
VCS=0
4.7
V
Delay Time Of OLP
TD-OLP
35
65
95
ms
OTP threshold
T(THR)
130
145
°C
CURRENT LIMITING SECTION
Peak Current Limitation
ILIM
VFB=4.4V
1.06
1.2
1.34
A
Threshold Voltage For Valley
ILIM-L
VFB=4.4V
1.14
A



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