- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377778 > LTC4252-1IMS (LINEAR TECHNOLOGY CORP) TRANS ARRAY NPN/NPN SSMINI-6 PDF資料下載
參數(shù)資料
| 型號(hào)： | LTC4252-1IMS |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | TRANS ARRAY NPN/NPN SSMINI-6 |
| 中文描述： | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO10 |
| 封裝： | PLASTIC, MSOP-10 |
| 文件頁(yè)數(shù)： | 8/32頁(yè) |
| 文件大?。?/td> | 327K |
| 代理商： | LTC4252-1IMS |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)當(dāng)前第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)
LTC4252-1/LTC4252-2
8
425212f
TYPICAL PERFOR AU
t
SS
vs Temperature
V
IN
(Pin 1/Pin 1):
Positive Supply Input. Connect this pin
to the positive side of the supply through a dropping
resistor. A shunt regulator clamps V
IN
at 13V. An internal
undervoltage lockout (UVLO) circuit holds GATE low until
the V
IN
pin is greater than V
LKO
(9.2V), overriding UV and
OV. If UV is high, OV is low and V
IN
comes out of UVLO,
TIMER starts an initial timing cycle before initiating a GATE
ramp-up. If V
IN
drops below approximately 8.2V, GATE
pulls low immediately.
PWRGD (Pin 2/Not Available):
Power Good Status Out-
put (MS only). At start-up, PWRGD latches low if DRAIN
is below 2.385V and GATE is within 2.8V of V
IN
. PWRGD
status is reset by UV, V
IN
(UVLO) or a circuit breaker fault
timeout. This pin is internally pulled high by a 58
μ
A current
source.
SS (Pin 3/Pin 2):
Soft-Start Pin. This pin is used to ramp
inrush current during start up, thereby effecting control
over di/dt. A 20x attenuated version of the SS pin voltage
is presented to the current limit amplifier. This attenuated
voltage limits the MOSFET’s drain current through the
sense resistor during the soft-start current limiting. At the
beginning of a start-up cycle, the SS capacitor (C
SS
) is
ramped by a 22
μ
A current source. The GATE pin is held
low until SS exceeds 20 V
OS
= 0.2V. SS is internally
shunted by a 100k resistor (R
SS
) which limits the SS pin
voltage to 2.2V. This corresponds to an analog current
limit SENSE voltage of 100mV. If the SS capacitor is
omitted, the SS pin ramps from 0V to 2.2V in about 220
μ
s.
The SS pin is pulled low under any of the following
conditions: in UVLO, in an undervoltage condition, in an
overvoltage condition, during the initial timing cycle or
when the circuit breaker fault times out.
SENSE (Pin 4/Pin 3):
Circuit Breaker/Current Limit Sense
Pin. Load current is monitored by a sense resistor R
S
connected between
SENSE and V
EE
, and controlled in
three steps.
If SENSE exceeds V
CB
(50mV), the circuit
breaker comparator activates a (230
μ
A+8I
DRN
) TIMER
pull-up current. If SENSE exceeds V
ACL
(100mV), the
analog current limit amplifier pulls GATE down to regulate
the MOSFET current at V
ACL
/R
S
. In the event of a cata-
strophic short-circuit, SENSE may overshoot 100mV. If
SENSE reaches V
FCL
(200mV), the fast current limit com-
parator pulls GATE low with a strong pull-down. To disable
the circuit breaker and current limit functions, connect
SENSE
to V
EE
.
PIU
I
PGH
vs Temperature
t
PLLUG
and t
PHLOG
vs Temperature
TEMPERATURE
°
(C)
–55 –35 –15
5
25
45
65
85 105 125
I
P
μ
A
4252-1/2 G38
62
61
60
59
58
57
56
55
V
PWRGD
= 0V
(MS ONLY)
TEMPERATURE (
°
C)
–55 –35 –15
5
25
45
65
85 105 125
t
S
μ
s
4252-1/2 G27
220
210
200
190
180
170
160
150
SS PIN FLOATING,
V
SS
RAMPS FROM 0.2V TO 2V
TEMPERATURE (
°
C)
–55
D
μ
s
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
–15
25
45
125
4252-1/2 G24
–35
5
65
85 105
t
PLLUG
t
PHLOG
(MS/MS8)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC4252-1IMS8 | TRANS ARRAY NPN/NPN SSMINI-6 |
| LTC4252-2CMS8 | Negative Voltage Hot Swap Controllers |
| LTC4252-2IMS | Negative Voltage Hot Swap Controllers |
| LTC4252-2CMS | Negative Voltage Hot Swap Controllers |
| LTC4252-2IMS8 | Negative Voltage Hot Swap Controllers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC4252-1IMS#PBF | 功能描述:IC CNTRLR HOTSWAP NEGVOLT 10MSOP 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(wú) 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 |
| LTC4252-1IMS#TR | 功能描述:IC CNTRLR HOTSWAP NEGVOLT 10MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:100 系列:- 類型:熱插拔開關(guān) 應(yīng)用:通用 內(nèi)部開關(guān):是 電流限制:可調(diào) 電源電壓:9 V ~ 13.2 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-TDFN-EP（3x3） 包裝:管件 |
| LTC4252-1IMS#TRPBF | 功能描述:IC CNTRLR HOTSWAP NEGVOLT 10MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:100 系列:- 類型:熱插拔開關(guān) 應(yīng)用:通用 內(nèi)部開關(guān):是 電流限制:可調(diào) 電源電壓:9 V ~ 13.2 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-TDFN-EP（3x3） 包裝:管件 |
| LTC4252-1IMS8 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Negative Voltage Hot Swap Controllers |
| LTC4252-1IMS8#PBF | 功能描述:IC CNTRLR HOTSWAP NEGVOLT 8-MSOP 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(wú) 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 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。