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参数资料
| 型号： | LTC4252-2CMS8#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | Negative Voltage Hot Swap Controllers; Package: MSOP; No of Pins: 8; Temperature Range: 0°C to +70°C |
| 中文描述： | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封装： | LEAD FREE, PLASTIC, MSOP-8 |
| 文件页数： | 23/36页 |
| 文件大小： | 336K |
| 代理商： | LTC4252-2CMS8#TRPBF |
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LTC4252-1/LTC4252-2
LTC4252A-1/LTC4252A-2
3
425212fc
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
LTC4252-1/-2
LTC4252A-1/-2
UNITS
MIN
TYP
MAX
MIN
TYP
MAX
VZ
VIN – VEE Zener Voltage
IIN = 2mA
l 11.5
13
14.5
11.5
13
14.5
V
rZ
VIN – VEE Zener Dynamic Impedance
IIN = 2mA to 30mA
5
Ω
IIN
VIN Supply Current
UV = OV = 4V, VIN = (VZ – 0.3V)
●
0.8
2
0.9
2
mA
VLKO
VIN Undervoltage Lockout
Coming Out of UVLO (Rising VIN)
●
9.2
11.5
9
10
V
VLKH
VIN Undervoltage Lockout Hysteresis
1
0.5
V
VCB
Circuit Breaker Current Limit Voltage
VCB = (VSENSE – VEE)
●
40
50
60
45
50
55
mV
VACL
Analog Current Limit Voltage
VACL = (VSENSE – VEE),
SS = Open or 2.2V
●
80
100
120
mV
VACL/
VCB
Analog Current Limit Voltage/
Circuit Breaker Voltage
VACL = (VSENSE – VEE),
SS = Open or 1.4V
●
1.05
1.20
1.38
V/V
VFCL
Fast Current Limit Voltage
VFCL = (VSENSE – VEE)
●
150
200
300
150
200
300
mV
VSS
SS Voltage
After End of SS Timing Cycle
2.2
1.4
V
RSS
SS Output Impedance
100
50
kΩ
ISS
SS Pin Current
UV = OV = 4V, VSENSE = VEE,
VSS = 0V (Sourcing)
22
28
μA
UV = OV = 0V, VSENSE = VEE,
VSS = 2V (Sinking)
28
mA
VOS
Analog Current Limit Offset Voltage
10
mV
VACL+VOS/
VSS
Ratio (VACL + VOS) to SS Voltage
0.05
V/V
IGATE
GATE Pin Output Current
UV = OV = 4V, VSENSE = VEE,
VGATE = 0V (Sourcing)
●
40
58
80
40
58
80
μA
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
10
12
VZ
V
VGATEH
Gate High Threshold
VGATEH = VIN – VGATE, IIN = 2mA,
for PWRGD Status (MS Only)
2.8
V
VGATEL
Gate Low Threshold
(Before Gate Ramp-Up)
0.5
V
VUVHI
UV Pin Threshold HIGH
● 3.075 3.225 3.375
V
VUVLO
UV Pin Threshold LOW
● 2.775 2.925 3.075
V
VUV
UV Pin Threshold
Low-to-High Transition
●
3.05
3.08
3.11
V
VUVHST
UV Pin Hysteresis
(● for LTC4252A Only)
●
300
292
324
356
mV
VOVHI
OV Pin Threshold HIGH
●
5.85
6.15
6.45
V
VOVLO
OV Pin Threshold LOW
●
5.25
5.55
5.85
V
VOV
OV Pin Threshold
Low-to-High Transition
●
5.04
5.09
5.14
V
VOVHST
OV Pin Hysteresis
(● for LTC4252A Only)
●
600
82
102
122
mV
ISENSE
SENSE Pin Input Current
UV = OV = 4V, VSENSE = 50mV
●
–15
–30
–15
–30
μA
IINP
UV, OV Pin Input Current
UV = OV = 4V
●
± 0.1
±1
± 0.1
±1
μA
VTMRH
TIMER Pin Voltage High Threshold
4
V
VTMRL
TIMER Pin Voltage Low Threshold
1
V
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4252-2CMSPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Negative Voltage Hot Swap Controllers |
| LTC4252-2CMSTR | 制造商:LINER 制造商全称:Linear Technology 功能描述:Negative Voltage Hot Swap Controllers |
| LTC4252-2CMSTRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Negative Voltage Hot Swap Controllers |
| LTC4252-2IMS | 功能描述:IC CNTRLR HOTSWAP NEGVOLT 10MSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 标准包装:50 系列:- 类型:热交换控制器 应用:-48V 远程电力系统，AdvancedTCA ? 系统，高可用性 内部开关:无 电流限制:可调 电源电压:11.5 V ~ 14.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-MSOP 包装:管件 |
| LTC4252-2IMS#PBF | 功能描述:IC CNTRLR HOTSWAP NEGVOLT 10MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 标准包装:50 系列:- 类型:热交换控制器 应用:-48V 远程电力系统，AdvancedTCA ? 系统，高可用性 内部开关:无 电流限制:可调 电源电压:11.5 V ~ 14.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-MSOP 包装:管件 |
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