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參數資料
| 型號： | MC3425P1 |
| 廠商： | MOTOROLA INC |
| 元件分類： | 電源管理 |
| 英文描述： | Single Output LDO, 250mA, Fixed(2.85V), Low Noise, Fast Transient Response 6-SOT-223 |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDIP8 |
| 封裝： | PLASTIC, DIP-8 |
| 文件頁數： | 1/12頁 |
| 文件大?。?/td> | 170K |
| 代理商： | MC3425P1 |
Device
Operating
Temperature Range
Package
SEMICONDUCTOR
TECHNICAL DATA
POWER SUPPLY SUPERVISORY/
OVER AND UNDERVOLTAGE
PROTECTION CIRCUIT
ORDERING INFORMATION
MC3425P1
TA = 0
°
to +70
°
C
Plastic DIP
PIN CONNECTIONS
Order this document by MC3425/D
P1 SUFFIX
PLASTIC PACKAGE
CASE 626
1
8
1
2
3
4
5
6
7
8
O.V. DRV
Output
O.V. DLY
O.V. Sense
U.V. Sense
VCC
Gnd
U.V. IND
Output
U.V. DLY
(Top View)
1
MOTOROLA ANALOG IC DEVICE DATA
The MC3425 is a power supply supervisory circuit containing all the
necessary functions required to monitor over and undervoltage fault
conditions. These integrated circuits contain dedicated over and
undervoltage sensing channels with independently programmable time
delays. The overvoltage channel has a high current Drive Output for use in
conjunction with an external SCR Crowbar for shutdown. The undervoltage
channel input comparator has hysteresis which is externally programmable,
and an open–collector output for fault indication.
Dedicated Over and Undervoltage Sensing
Programmable Hysteresis of Undervoltage Comparator
Internal 2.5 V Reference
300 mA Overvoltage Drive Output
30 mA Undervoltage Indicator Output
Programmable Time Delays
4.5 V to 40 V Operation
MAXIMUM RATINGS
Rating
Symbol
VCC
VIR
IOS(DRV)
Value
40
Unit
Vdc
Power Supply Voltage
Comparator Input Voltage Range (Note 1)
–0.3 to +40
Vdc
Drive Output Short Circuit Current
Internally
Limited
mA
Indicator Output Voltage
VIND
IIND
0 to 40
Vdc
Indicator Output Sink Current
30
mA
Power Dissipation and Thermal Characteristics
Maximum Power Dissipation @ TA = 70
°
C
Thermal Resistance, Junction–to–Air
PD
R
θ
JA
TJ
TA
Tstg
1000
80
mW
°
C/W
Operating Junction Temperature
+150
°
C
°
C
°
C
Operating Ambient Temperature Range
0 to +70
Storage Temperature Range
–55 to +150
NOTE:
1. The input signal voltage should not be allowed to go negative by more than 300 mV
NOTE:
1.
or positive by more than 40 V, independent of VCC, without device destruction.
Simplified Application
Overvoltage Crowbar Protection, Undervoltage Indication
DC
Power
Supply
Vin
Vout
Undervoltage
Indication
MC3425
Cout
+
Motorola, Inc. 1996
Rev 2
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