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參數(shù)資料
| 型號： | LTC690M |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Microprocessor Supervisory Circuits |
| 中文描述： | 微處理器監(jiān)控電路 |
| 文件頁數(shù)： | 5/16頁 |
| 文件大?。?/td> | 141K |
| 代理商： | LTC690M |
5
LTC 690/LTC 691
LTC 694/LTC 695
V
CC
:
5V Supply Input. The V
CC
pin should be bypassed
with a 0.1
μ
F capacitor.
V
OUT
:
Voltage Output for Backed Up Memory. Bypass with
a capacitor of 0.1
μ
F or greater. During normal operation,
V
OUT
obtains power from V
CC
through an NMOS power
switch, M1, which can deliver up to 50mA and has a typical
on resistance of 5
. When V
CC
is lower than V
BATT
, V
OUT
is internally switched to V
BATT
. If V
OUT
and V
BATT
are not
used, connect V
OUT
to V
CC
.
V
BATT
:
Back-Up Battery Input. When V
CC
falls below V
BATT
,
auxiliary power, connected to V
BATT
, is delivered to V
OUT
through PMOS switch, M2. If back-up battery or auxiliary
power is not used, V
BATT
should be connected to GND.
W
I
DAGRA
BLOCK
GND:
Ground pin.
BATT ON:
Battery On Logic Output from Comparator C2.
BATT ON goes low when V
OUT
is internally connected to
V
CC
. The output typically sinks 35mA and can provide base
drive for an external PNP transistor to increase the output
current above the 50mA rating of V
OUT
. BATT ON goes
high when V
OUT
is internally switched to V
BATT
.
PFI:
Power Failure Input. PFI is the noninverting input to
the power-fail comparator, C3. The inverting input is
internally connected to a 1.3V reference. The power failure
output remains high when PFI is above 1.3V and goes low
when PFI is below 1.3V. Connect PFI to GND or V
OUT
when
C3 is not used.
PI FU CTIO S
CHARGE
PUMP
M2
M1
VBATT
VCC
CE IN
PFI
OSC IN
OSC SEL
WDI
RESET PULSE
GENERATOR
WATCHDOG
TIMER
RESET
BATT ON
VOUT
C1
–
1.3V
GND
–
+
+
C2
OSC
TRANSITION
DETECTOR
–
+
C3
WDO
RESET
PFO
LOW LINE
CE OUT
690 BD
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PDF描述 |
|---|---|
| LTC691C | Microprocessor Supervisory Circuits |
| LTC691CN | Microprocessor Supervisory Circuits |
| LTC691I | Microprocessor Supervisory Circuits |
| LTC691ISW | Microprocessor Supervisory Circuits |
| LTC690MJ8 | OSCILLATOR 27.00MHZ SMD |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC690MJ8 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Microprocessor Supervisory Circuits |
| LTC691 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Microprocessor Supervisory Circuits |
| LTC6910-1 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Digitally Controlled Programmable Gain Amplifiers in SOT-23 |
| LTC6910-1CTS8 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Digitally Controlled Programmable Gain Amplifiers in SOT-23 |
| LTC6910-1CTS8#PBF | 制造商:Linear Technology 功能描述:SP Amp Variable Gain Amp Single R-R I/O 制造商:Linear Technology 功能描述:1 Programmable Gain Amplifier Bulk 制造商:Linear Technology 功能描述:AMPLIFIER, PROG GAIN, 11MHZ, TSOT-23-8; No. of Amplifiers:1; Bandwidth:11MHz; Supply Voltage Range:2.7V to 10.5V; Amplifier Case Style:TSOT-23; No. of Pins:8; No. of Channels:1; Rail To Rail I/O Type:Rail-Rail I/O ;RoHS Compliant: Yes |
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