參數(shù)資料
型號(hào): LTC4251CS6
廠商: LINEAR TECHNOLOGY CORP
元件分類: 電源管理
英文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6
封裝: 1 MM HEIGHT, PLASTIC, MO-193, TSOT-23, 6 PIN
文件頁(yè)數(shù): 12/20頁(yè)
文件大?。?/td> 235K
代理商: LTC4251CS6
LTC4251/LTC4251-1/
LTC4251-2
2
425112fa
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VZ
VIN to VEE Zener Voltage
IIN = 2mA
11.5
13
14.5
V
rZ
VIN to VEE Zener Dynamic Impedance
IIN = 2mA to 30mA
5
IIN
VIN Supply Current
UV/OV = 4V, VIN = (VZ – 0.3V)
0.8
2
mA
VLKO
VIN Undervoltage Lockout
Coming out of UVLO (Rising VIN)
9.2
11.5
V
VLKH
VIN Undervoltage Lockout Hysteresis
1V
VCB
Circuit Breaker Current Limit Voltage
VCB = (VSENSE – VEE)
40
50
60
mV
VACL
Analog Current Limit Voltage
VACL = (VSENSE – VEE)
80
100
120
mV
VFCL
Fast Current Limit Voltage
VFCL = (VSENSE – VEE)
150
200
300
mV
IGATE
GATE Pin Output Current
UV/OV = 4V, VSENSE = VEE, VGATE = 0V (Sourcing)
40
58
80
A
UV/OV = 4V, VSENSE – VEE = 0.15V, VGATE = 3V (Sinking)
17
mA
UV/OV = 4V, VSENSE – VEE = 0.3V, VGATE = 1V (Sinking)
190
mA
VGATE
External MOSFET Gate Drive
VGATE – VEE, IIN = 2mA
10
12
VZ
V
VGATEL
Gate Low Threshold
(Before Gate Ramp-Up)
0.5
V
VUVHI
UV Threshold High
LTC4251/LTC4251-2
3.075
3.225
3.375
V
LTC4251-1
2.300
2.420
2.540
V
VUVLO
UV Threshold Low
LTC4251/LTC4251-2
2.775
2.925
3.075
V
LTC4251-1
2.050
2.160
2.270
V
VUVHST
UV Hysteresis
LTC4251/LTC4251-2
0.30
V
LTC4251-1
0.26
V
VOVHI
OV Threshold High
LTC4251
5.85
6.15
6.45
V
LTC4251-1
5.86
6.17
6.48
V
ABSOLUTE
AXI U
RATI GS
W
WW
U
PACKAGE/ORDER I FOR ATIO
UU
W
Current into VIN (100s Pulse) ........................... 100mA
Minimum VIN Voltage ........................................... –0.3V
Gate, UV/OV, Timer Voltage .......................– 0.3V to 16V
Sense Voltage ............................................– 0.6V to 16V
Current Out of Sense Pin (20
s Pulse) ............. –200mA
Maximum Junction Temperature .......................... 125
°C
Operating Temperature Range
LTC4251C/LTC4251-1C/LTC4251-2C ...... 0
°C to 70°C
LTC4251I/LTC4251-1I/LTC4251-2I .... – 40
°C to 85°C
Storage Temperature Range ................. – 65
°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300
°C
(Note 1), All Voltages are Referred to VEE
ELECTRICAL CHARACTERISTICS The denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Notes 2, 3)
TJMAX = 125°C, θJA = 256°C/W
SENSE 1
VEE 2
VIN 3
6 GATE
5 UV/OV*
4 TIMER
TOP VIEW
S6 PACKAGE
6-LEAD PLASTIC SOT-23
*UV FOR LTC4251-2
ORDER PART NUMBER
S6 PART MARKING
Consult LTC Marketing for parts specified with wider operating temperature ranges.
LTC4251CS6
LTC4251IS6
LTC4251-
1CS6
LTC4251-1IS6
LTC4251-
2CS6
LTC4251-2IS6
LTUQ
LTUR
LTQU
LTQV
LTK6
LTAAZ
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF
Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
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