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參數(shù)資料
| 型號： | MAX6749KA+T |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | µP Reset Circuits with Capacitor-Adjustable Reset/Watchdog Timeout Delay |
| 中文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
| 封裝： | ROHS COMPLIANT, SOT-23, 8 PIN |
| 文件頁數(shù)： | 8/14頁 |
| 文件大?。?/td> | 170K |
| 代理商： | MAX6749KA+T |
MAX6746–MAX6753
P Reset Circuits with Capacitor-Adjustable
Reset/Watchdog Timeout Delay
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(VCC = +1.2V to +5.5V, TA = TMIN to TMAX, unless otherwise specified. Typical values are at VCC = +5V and TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
CSWT = 1500pF
11.38
15.18
18.98
Fast Watchdog Timeout Period,
SET Ratio = 64,
(MAX6752/MAX6753)
tWD1
CSWT = 100pF
1.01
ms
Fast Watchdog Minimum Period
(MAX6752/MAX6753)
2000
ns
SWT Ramp Current
IRAMP
VSWT = 0 to 1.23V, VCC = 1.6V to 5V
200
250
300
nA
SWT Ramp Threshold
VRAMP
VCC = 1.6V to 5V (VRAMP rising)
1.173
1.235
1.297
V
VCC
≥ 1.0V, ISINK = 50A
0.3
VCC
≥ 2.7V, ISINK = 1.2mA
0.3
RESET Output-Voltage LOW
Open-Drain, Push-Pull
(Asserted)
VOL
VCC
≥ 4.5V, ISINK = 3.2mA
0.4
V
VCC
≥ 1.8V, ISOURCE = 200A
0.8 x VCC
VCC
≥ 2.25V, ISOURCE = 500A
0.8 x VCC
RESET Output-Voltage HIGH,
Push-Pull (Not Asserted)
VOH
VCC
≥ 4.5V, ISOURCE = 800A
0.8 x VCC
V
RESET Output Leakage Current,
Open Drain
ILKG
VCC > VTH, reset not asserted,
V
RESET = 5.5V
1.0
A
DIGITAL INPUTS (
MR, SET0, SET1, WDI, WDS)
VIL
0.8
VIH
VCC
≥ 4.0V
2.4
VIL
VCC < 4.0V
0.3 x VCC
Input Logic Levels
VIH
0.7 x VCC
V
MR Minimum Pulse Width
1s
MR Glitch Rejection
100
ns
MR to RESET Delay
200
ns
MR Pullup Resistance
Pullup to VCC
12
20
28
k
Ω
WDI Minimum Pulse Width
300
ns
RESET IN
RESET IN Threshold
VRESET IN
TA = -40°C to +125°C
1.216
1.235
1.254
V
RESET IN Leakage Current
IRESET IN
-50
±1
+50
nA
RESET IN to RESET Delay
RESET IN falling at 1mV/s
20
s
Note 1: Production testing done at TA = +25°C. Over temperature limits are guaranteed by design.
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