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参数资料
| 型号： | LTC4210-3IS6 |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6 |
| 封装： | PLASTIC, MO-193, TSOT-23, 6 PIN |
| 文件页数： | 5/16页 |
| 文件大小： | 216K |
| 代理商： | LTC4210-3IS6 |
13
LTC4210-3/LTC4210-4
421034fa
APPLICATIO S I FOR ATIO
WU
UU
Latch-Off After Current Fault (LTC4210-4)
Figure 9 shows the waveforms of the LTC4210-4 (latch-off
version) during a circuit breaker fault. At time point B, the
TIMER trips the COMP2 threshold. The GATE pin pulls to
ground while the TIMER pin is latched high by a 5
A pull-
up. The TIMER pin eventually reaches the soft-clamped
voltage (VCLAMP) of 2.3V. To clear the latchoff mode, the
user can either pull the TIMER pin to below 0.2V externally
or cycle the ON pin low for more than 30
s.
Autoretry After Current Fault (LTC4210-3)
Figure 8 shows the waveforms of the LTC4210-3 (autoretry
version) during a circuit breaker fault. At time point B1, the
TIMER trips the COMP2 threshold of 1.3V. The GATE pin
pulls to ground while TIMER begins a “cool-off” cycle with
a 2
A pull-down to the COMP1 threshold of 0.2V. At time
point C1, the TIMER pin pulls down with approximately a
7k resistor to ground and a GATE start-up cycle is initiated.
If the fault persists, the fault autoretry duty cycle is
approximately 3.8%. Pulling the ON pin low for more than
30
s will stop the autoretry function and put the LTC4210
in reset mode.
Figure 8. Automatic Retry After Overcurrent Fault
A1
VTIMER
VGATE
VOUT
ILOAD
4210 F08
B1
C1
A2 B2
COMP2
COMP1
CB
FAULT
CB
FAULT
NORMAL
MODE
COOL OFF
CYCLE
COOL OFF
CYCLE
60
A
100
A
2
A
2
A
60
A
REGULATING AT 50mV/RSENSE
Normal Mode/External Timer Control
Whenever the TIMER pin voltage drops below the COMP1
threshold, but is not in reset mode, the TIMER enters
normal (100
A source) mode with an equivalent 7k resis-
tive pull-down. Table 1 shows the relationship of tINITIAL,
tCBDELAY, tCOOLOFF vs CTIMER.
If the TIMER pin is pulled beyond the COMP2 threshold,
the GATE pin is pulled to ground immediately. This allows
the TIMER pin to be used for overvoltage detection, see
Figure 11.
Externally forcing the TIMER pin below the COMP1 thresh-
old will reset the TIMER to normal mode. During over-
voltage detection, the TIMER’s 100
A pull-down current
will continue to be on if (VCC – SENSE) voltage is below
50mV. If the (VCC – SENSE) voltage exceeds 50mV during
the overvoltage detection, the TIMER current will be the
same as described for latched-off or autoretry mode. See
the section OVERVOLTAGE DETECTION USING TIMER
PIN for details of the application.
NORMAL
MODE
LATCHED OFF CYCLE
CB
FAULT
60
A
VTIMER
VGATE
VOUT
ILOAD
AB
C
VCLAMP
COMP2
COMP1
0V
2410 F09
REGULATING AT 50mV/RSENSE
Figure 9. Latchoff After Overcurrent Fault
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4210-3IS6#PBF | 制造商:Linear Technology 功能描述:Hot Swap Controller 1-CH 7V 6-Pin TSOT-23 |
| LTC4210-3IS6#TRMPBF | 功能描述:IC CONTROLLER HOT SWAP TSOT23-6 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 |
| LTC4210-3IS6#TRPBF | 功能描述:IC CONTROLLER HOT SWAP TSOT23-6 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 |
| LTC4210-4 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Hot Swap Controller in 6-Lead SOT-23 Package |
| LTC4210-4CS6 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Hot Swap Controller in 6-Lead SOT-23 Package |
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