參數(shù)資料
型號: MAX6730UTSD3+T
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: 電源管理
英文描述: Single-/Dual-/Triple-Voltage µP Supervisory Circuits with Independent Watchdog Output
中文描述: 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO6
封裝: ROHS COMPLIANT, SOT-23, 6 PIN
文件頁數(shù): 14/15頁
文件大?。?/td> 199K
代理商: MAX6730UTSD3+T
MAX6730–MAX6735
Detailed Description
Supply Voltages
The MAX6730–MAX6735 microprocessor (P) supervi-
sors maintain system integrity by alerting the P to fault
conditions. The MAX6730–MAX6735 monitor one to
three supply voltages in P-based systems and assert
an active-low reset output when any monitored supply
voltage drops below its preset threshold. The output
state remains valid for VCC1 or VCC2 greater than +0.8V.
Threshold Levels
The two-letter code in the Reset Voltage Threshold
Suffix Guide (Table 1) indicates the threshold level
combinations for VCC1 and VCC2.
Reset Output
The MAX6730–MAX6735 feature an active-low reset out-
put (RST). RST asserts when the voltage at either VCC1 or
VCC2 falls below the voltage threshold level, VRSTIN
drops below its threshold, or MR is driven low (Figure 1).
RST remains low for the reset timeout period (Table 2)
after VCC1, VCC2, and RSTIN increase above their
respective thresholds and after MR releases high.
Whenever VCC1, VCC2, or RSTIN go below the reset
threshold before the end of the reset timeout period, the
internal timer restarts. The MAX6730/MAX6732/ MAX6734
provide an open-drain RST output, and the MAX6731/
MAX6733/MAX6735 provide a push-pull RST output.
Single-/Dual-/Triple-Voltage P Supervisory
Circuits with Independent Watchdog Output
8
_______________________________________________________________________________________
Table 1. Reset Voltage Threshold Suffix Guide**
PART NO. SUFFIX
VCC1 NOMINAL
VOLTAGE
THRESHOLD(V)
VCC2 NOMINAL
VOLTAGE
THRESHOLD (V)
LT
4.625
3.075
MS
4.375
2.925
MR
4.375
2.625
TZ
3.075
2.313
SY
2.925
2.188
RY
2.625
2.188
TW
3.075
1.665
SV
2.925
1.575
RV
2.625
1.575
TI
3.075
1.388
SH
2.925
1.313
RH
2.625
1.313
TG
3.075
1.110
SF
2.925
1.050
RF
2.625
1.050
TE
3.075
0.833
SD
2.925
0.788
RD
2.625
0.788
ZW
2.313
1.665
YV
2.188
1.575
ZI
2.313
1.388
YH
2.188
1.313
ZG
2.313
1.110
YF
2.188
1.050
ZE
2.313
0.833
YD
2.188
0.788
WI
1.665
1.388
VH
1.575
1.313
WG
1.665
1.110
VF
1.575
1.050
WE
1.665
0.833
VD
1.575
0.788
**
Standard versions are shown in bold and are available in a
D3 timeout option only. Standard versions require 2500-piece
order increments and are typically held in sample stock. There
is a 10,000-piece order increment on nonstandard versions.
Other threshold voltages may be available; contact factory
for availability.
Table 2. Reset Timeout Period Suffix Guide
ACTIVE TIMEOUT PERIOD
TIMEOUT
PERIOD SUFFIX
MIN (ms)
MAX (ms)
D1
1.1
2.2
D2
8.8
17.6
D3
140
280
D5
280
560
D6
560
1120
D4
1120
2240
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