参数资料
型号: LTC1232IN8#PBF
厂商: LINEAR TECHNOLOGY CORP
元件分类: 电源管理
英文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDIP8
封装: 0.300 INCH, PLASTIC, DIP-8
文件页数: 3/8页
文件大小: 97K
代理商: LTC1232IN8#PBF
3
LTC1232
1232fa
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VCC
Supply Voltage
4.5
5
5.5
V
VIH
ST and PB RST Input High Level
2VCC+0.3
V
VIL
ST and PB RST Input Low Level
– 0.3
0.8
V
DC ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
IIL
Input Leakage
(Note 3)
–1
1
A
IOH
Output Current at 2.4V
(Note 5)
–1
–13
mA
IOL
Output Current at 0.4V
(Note 5)
26
mA
ICC
Supply Current
(Note 4)
0.5
2
mA
VCCTP
VCC Trip Point
TOL = GND
4.5
4.62
4.74
V
VCCTP
VCC Trip Point
TOL = VCC
4.25
4.37
4.49
V
VHYS
VCC Trip Point Hysteresis
40
mV
VRST
RST Output Voltage at VCC = 1V
ISINK = 10A4
200
mV
The denotes the specifications which apply
over the full operating temperature. VCC = full operating range.
The denotes the specifications which apply over the full operating
temperature. VCC = full operating range.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
tPB
PB RST = VIL
40
ms
tRST
RESET Active Time
250
610
1000
ms
tST
ST Pulse Width
20
ns
tRPD
VCC Detect to RST and RST
100
ns
tf
VCC Slew Rate 4.75V–4.25V
300
s
tRPU
VCC Detect to RST and RST
tR = 5s
250
610
1000
ms
(Reset Active Time)
tR
VCC Slew Rate 4.25V–4.75V
0ns
tTD
ST Pin Detect to RST and RST
TD = GND
60
150
250
ms
(Watchdog Time-Out Period)
TD = Floating
250
610
1000
ms
TD = VCC
500
1200
2000
ms
CIN
Input Capacitance
5pF
COUT
Output Capacitance
5
pF
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: All voltage values are with respect to GND.
Note 3: The PB RST pin is internally pulled up to VCC with an internal
impedance of 10k typical. The TD pin has internal bias current.
Note 4: Measured with outputs open.
Note 5: The RST pin is an open drain output.
The denotes the specifications which apply over the full operating temperature.
VCC = full operating range.
AC CHARACTERISTICS
RECO
E DED OPERATI G CO DITIO S
UU
U
W
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