Power-On Reset or Disconnect Using a TimerBlox
參數(shù)資料
型號(hào): LT6109IMS-2#TRPBF
廠商: Linear Technology
文件頁(yè)數(shù): 17/28頁(yè)
文件大?。?/td> 0K
描述: IC AMP CURRENT SENSE 10MSOP
標(biāo)準(zhǔn)包裝: 2,500
類(lèi)型: 放大器,比較器,參考
應(yīng)用: 電流感測(cè),電源管理
安裝類(lèi)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: 帶卷 (TR)
LT6109-1/LT6109-2
24
610912fa
TYPICAL APPLICATIONS
Power-On Reset or Disconnect Using a TimerBlox Circuit
+
+
V
V+
V
+
V
5
INC1
610912 TA06
V+
400mV
REFERENCE
V+
RIN
100
RSENSE
ILOAD
R5
10k
INC2
OUTA
6
7
8
9
SENSEHI
LT6109-1
5V
SENSELO
OUTC2
OUTC1
EN/RST
10
1
3
4
2
R1
8.06k
R2
1.5k
R3
499
R4
10k
R7
1M
R6
487k
R8
30k
TRIG
C1
0.1F
Q1
2N2222
OUT
GND
V+
SET
DIV
LTC6993-3
5V
CREATES A DELAYED
10s RESET PULSE
ON START-UP
OPTIONAL:
DISCHARGES C1
WHEN SUPPLY
IS DISCONNECTED
TheLTC6993-1providesa10SresetpulsetotheLT6109-1.
TheresetpulseisdelayedbyR7andC1whosetimeconstant
must be greater than 10ms and longer than the supply
turn-on time. Optional components R8 and Q1 discharge
capacitor C1 when the supply and/or ground are discon-
nected. This ensures that when the power supply and/or
ground are restored, capacitor C1 can fully recharge and
triggertheLTC6993-3toproduceanothercomparatorreset
pulse. These optional components are particularly useful
if the power and/or ground connections are intermittent,
as can occur when PCB are plugged into a connector.
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