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COILTRONICSDR125-221-R,or 데이터시트(PDF) 4 Page - Texas Instruments

부품명 COILTRONICSDR125-221-R,or
상세설명  SM74301 100V, 350 mA Constant On-Time Buck Switching Regulator
PDF  16 Pages
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제조업체  TI1 [Texas Instruments]
홈페이지  http://www.ti.com
Logo TI1 - Texas Instruments

COILTRONICSDR125-221-R,or 데이터시트(HTML) 4 Page - Texas Instruments

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SM74301
SNVS719A – JULY 2011
www.ti.com
Electrical Characteristics (continued)
Specifications with standard typeface are for TJ = 25°C, and those with boldface type apply over full Operating Junction
Temperature range. VIN = 48V, unless otherwise stated
(1).
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Switch Characteristics
Buckswitch Rds(on)
Itest = 200 mA
1.25
2.57
Ω
Gate Drive UVLO
Vbst – Vsw Rising
2.8
3.8
4.8
V
Gate Drive UVLO hysteresis
490
mV
Pre-charge switch voltage
At 1 mA
0.8
V
Pre-charge switch on-time
150
ns
Current Limit
Current Limit Threshold
0.41
0.51
0.61
A
Current Limit Response Time
Iswitch Overdrive = 0.1A Time
350
ns
to Switch Off
TOFF-1
OFF time generator
FB=0V, RCL = 100K
35
µs
TOFF-2
OFF time generator
FB=2.3V, RCL = 100K
2.56
µs
On Time Generator
TON - 1
Vin = 10V
2.15
2.77
3.5
µs
Ron = 200K
TON - 2
Vin = 95V
200
300
420
ns
Ron = 200K
Remote Shutdown Threshold
Rising
0.40
0.70
1.05
V
Remote Shutdown Hysteresis
35
mV
Minimum Off Time
Minimum Off Timer
FB = 0V
300
ns
Regulation and OV Comparators
FB Reference Threshold
Internal reference
2.445
2.5
2.550
V
Trip point for switch ON
FB Over-Voltage Threshold
Trip point for switch OFF
2.875
V
FB Bias Current
100
nA
Thermal Shutdown
Tsd
Thermal Shutdown Temp.
165
°C
Thermal Shutdown Hysteresis
25
°C
Thermal Resistance
DGK0008A Package
200
°C/W
θJA
Junction to Ambient
NGU0008B Package
40
°C/W
4
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Copyright © 2011, Texas Instruments Incorporated
Product Folder Links: SM74301



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