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参数资料
| 型号： | LX7001ILP-TR |
| 厂商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PBCY3 |
| 封装： | ROHS COMPLIANT, PLASTIC, TO-92, 3 PIN |
| 文件页数： | 8/9页 |
| 文件大小： | 166K |
| 代理商： | LX7001ILP-TR |
TRANSIENT IMMUNE UNDERVOLTAGE SENSING CIRCUIT
LX7001
PRODUCT DA T ABOOK 1996/1997
Copyright 1999
Rev. 1.2a 10/04
8
P RODUCTION
D AT A
S HEET
TYPICAL APPLICATION CIRCUITS
FIGURE 13. — LOW VOLTAGE MICROPROCESSOR RESET.
A time delayed reset can be accomplished with the addition of C
DLY.
For systems with extremely fast power supply rise times (< 500ns) it
is recommended that the RC
DLY time constant be greater than 5.0s.
V
TH(MPU) is the microprocessor reset input threshold.
Overheating of the logic level power MOSFET due to insufficient gate
voltage can be prevented with the above circuit. When the input signal is
below the 4.3 volt threshold of the LX7001C, its output grounds the gate
of the L2 MOSFET.
FIGURE 15. — VOLTAGE MONITOR.
FIGURE 16. — MOSFET LOW VOLTAGE GATE DRIVE PROTECTION.
V
TH(MPU)
V
IN
1 -
t
DLY = R CDLY In
1
FIGURE 14. — SWITCHING THE LOAD OFF WHEN
BATTERY REACHES BELOW 4.3V.
POWER
SUPPLY
1.2 V
REF
MICROPROCESSOR
CIRCUIT
RESET
C
DLY
R
V
IN
1.2 V
REF
LOAD
RESET
V
IN
POWER
SUPPLY
1.2 V
REF
RESET
V
IN
1.0k
1.2 V
REF
RESET
V
IN
270
4.3V
V
CC
R
L
SMP60N03-10L
O
B
SO
LETE
PRO
D
UCT
NOT
RECOMMENDED
FOR
NEW
DESIGNS
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