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參數(shù)資料
| 型號(hào)： | LTC4216 |
| 廠商： | Linear Technology Corporation |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Ultralow Voltage Hot Swap Controller |
| 中文描述： | 超低電壓熱插拔控制器 |
| 文件頁數(shù)： | 7/24頁 |
| 文件大?。?/td> | 277K |
| 代理商： | LTC4216 |
LTC4216
7
The LTC4216 is a Hot Swap controller residing either on
a removable circuit board or on the backplane. It moni-
tors the current and protects the load with an external
N-channel MOSFET and a current sensing resistor (see
Typical Application). Both inrush current limiting and
short-circuit protection are provided by the LTC4216. The
device is powered via the bias supply input (V
CC
) and it
has a separate sense pin, SENSEP, to monitor the load
supply (V
IN
). The load supply can extend from 0V to 6V,
with a minimum bias supply voltage of 2.3V.
When the ON pin is pulled from low to high, TIMER begins
the first timing cycle by sourcing 2μA into C1 once these
conditions are met: bias supply voltage out of undervolt-
age lockout (> 2.12V); TIMER, SS, FILTER and GATE
pin voltages < 0.2V. When the C1 voltage rises above
the TIMER pin threshold (1.253V), TIMER pulls low and
releases both the SS and GATE pins. C2 starts to ramp
up at the SS pin, controlling the rate of GATE ramp. This
limits the rate of change of the inrush current flowing into
the output load capacitance.
R
E
S
E
T pin goes high after
the second timing cycle when the FB pin voltage exceeds
0.6V and its hysteresis.
When the external MOSFET is fully turned on, the output
will ramp to load supply voltage if the inrush into the load
capacitance is low. However, if the inrush current exceeds
the analog current limit of
Δ
V
ACL(TH)
/R
SENSE
, the LTC4216
will ramp the output by sourcing the limited current into
the load capacitance.
The LTC4216 provides protection against output short-
circuits or current overload through an internal electronic
circuit breaker with trip threshold of 25mV and an analog
current limit circuit. The circuit breaker response time is
set by C3 at the FILTER pin.
–
+
–
+
–
+
–
+
–
+
–
+
+
–
–
+
–
+
–
+
0.2V
2.12V
0.4V
0.8V
0.6V
2
μ
A
2.4
μ
A
1.253V
CP1
CP6
CP7
CP5
CP4
V
CC
V
CC
V
CC
SENSEP
SENSEN
GATE
SS**
RESET
ON
FB
4216 BD
FAULT**
GND
TIMER
FILTER
NORMAL
UVLO
ECB
ACL
NOTE 1: FILTER DELAY IS SET BY FILTER PIN CAPACITOR
** ONLY AVAILABLE IN THE DE12 PACKAGE
V
CC
V
CC
CP2
CP3
1.253V
1.253V
6
μ
s
DELAY
FAULT LATCH
RESET
DEVICE
RESET
FAULT LATCH-OFF
OUT OF UVLO
CB TRIPS
OR UVLO
GATE
ON
GATE
OFF
M4
M3
M2
M1
M5
M6
R1
M7
M9
M10
M8
Z1
D1
D2
CHARGE
PUMP
100
μ
A
20
μ
A
40mV
25mV
10
μ
A
1
μ
A
5
μ
A
GATE ON
GATE OFF
DEVICE RESET, UVLO
OR POWER BAD
CB
TRIPS
FILTER
FUNCTION OF
OVERDRIVE
FILTER DELAY
(SEE NOTE 1)
30
μ
s
DELAY
60
μ
A
V
CC
LOGIC
3
μ
s
DELAY
+
+
BLOCK DIAGRA
W
OPERATIOU
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC4216CDE | 制造商:Linear Technology 功能描述:Hot Swap Controller 1-CH 6V 12-Pin DFN EP |
| LTC4216CDE#PBF | 功能描述:IC CTLR HOT SWAP 12-DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 類型:熱交換控制器 應(yīng)用:-48V 遠(yuǎn)程電力系統(tǒng)，AdvancedTCA ? 系統(tǒng)，高可用性 內(nèi)部開關(guān):無 電流限制:可調(diào) 電源電壓:11.5 V ~ 14.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:10-MSOP 包裝:管件 |
| LTC4216CDE#TR | 制造商:Linear Technology 功能描述:Hot Swap Controller 1-CH 6V 12-Pin DFN EP T/R |
| LTC4216CDE#TRPBF | 功能描述:IC CNTRLR HOT SWAP 12-DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 類型:熱交換控制器 應(yīng)用:-48V 遠(yuǎn)程電力系統(tǒng)，AdvancedTCA ? 系統(tǒng)，高可用性 內(nèi)部開關(guān):無 電流限制:可調(diào) 電源電壓:11.5 V ~ 14.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:10-MSOP 包裝:管件 |
| LTC4216CMS | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Ultralow Voltage Hot Swap Controller |
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