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参数资料
| 型号： | TC71COA |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
| 封装： | SO-8 |
| 文件页数： | 3/9页 |
| 文件大小： | 67K |
| 代理商： | TC71COA |
3
TC70
TC71
MICROMASTER – SYSTEM
SUPERVISOR WITH POWER SUPPLY
MONITOR, WATCHDOG AND
BATTERY BACKUP
ELECTRICAL CHARACTERISTICS: (Cont.)
DC: Battery Backup and Threshold Detector: TA = TMIN to TMAX, VCC = 4.5V to 5.5V, unless otherwise specified.
Symbol
Parameter
Test Conditions
Min
Typ
Max
Unit
IOUT2
VCCO Output Current in
VCCO = VBATT – 0.3V
500
—
A
Battery Backup Mode
VBATT = 2.8V
VSW
Battery Switchover Threshold
—
VBATT – 0.01
—V
(VCC Falling)
VHYST
Battery Switchover Hysteresis
—
20
—
mV
VOHCEO
CEO Output Voltage in
VCC < VBATT – 0.2, VBATT = 2.8V
VBATT – 0.2
—
V
Battery Backup Mode
IOH = 10A
VTDI
Threshold Detector Trip Voltage
1.2
—
1.4
V
ITDI
Threshold Detector Input Current
TA = 25°C
–25
—
+25
nA
VTDI (HYST)
Threshold Detector Hysteresis
—
10
—
mV
ELECTRICAL CHARACTERISTICS:
AC: Power Supply Monitor, EXT. RESET and Watchdog: TA = TMIN to TMAX, VCC = 4.5V to 5.5V, unless otherwise
specified.
Symbol
Parameter
Test Conditions
Min
Typ
Max
Unit
tPBH
PB Hold Time
Figure 4 (Note 4)
20
—
msec
tRST
Reset Active Time
Figure 6
500
—
900
msec
tST
RS STROBE Pulsewidth
Figure 3
500
—
nsec
tTD
Watchdog Timeout Period
Figure 3
500
700
900
msec
tRPD
VCC Detect to RS LOW
Figure 6
—
100
nsec
ELECTRICAL CHARACTERISTICS:
AC: Battery Backup and Threshold Detector: TA = TMIN to TMAX, VCC = 4.5V to 5.5V, unless otherwise specified.
Symbol
Parameter
Test Conditions
Min
Typ
Max
Unit
tPD
CE Propagational Delay
Figure 7
—
50
nsec
ELECTRICAL CHARACTERISTICS:
AC: TA = TMIN to TMAX.
Symbol
Parameter
Test Conditions
Min
Typ
Max
Unit
tF
VCC Fall Time From
Figure 5 (Note 1)
10
—
sec
4.25V to 3.0V
tR
VCC Rise Time From
Figure 5 (Note 1)
0
—
sec
3.0V to 4.25V
NOTES: 1. All voltages referenced to ground.
2. No output load.
3
Measured with VCCO and CEO open.
4. The RS output must be held low for a minimum of 20msec to guarantee a reset.
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