MAX4945BELAT データシートの表示（PDF） - Maxim Integrated
部品番号
コンポーネント説明
メーカー
MAX4945BELAT Datasheet PDF : 10 Pages
| |||
Overvoltage-Protection Controllers with
Internal FET
ELECTRICAL CHARACTERISTICS (continued)
(VIN = +5V (MAX4943/MAX4944_/MAX4945_/MAX4949), VIN = +3V (MAX4946), TA = -40°C to +85°C, unless otherwise noted.
Typical values are at TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
ACOK Output-Low Voltage
VOL
ACOK High-Leakage Current
Thermal Shutdown
Thermal-Shutdown Hysteresis
Load Capacitor
TIMING CHARACTERISTICS (Figure 2)
CONDITIONS
ISINK = 1mA
V ACOK = 5.5V
MIN TYP MAX UNITS
0.4
V
1
µA
+175
°C
40
°C
300
µF
Debounce Time
Switch Turn-On Time
ACOK Assertion Time
Switch Turn-Off Time
tINDBC
tON
t ACOK
tOFF
Time from VUVLO < VIN < VOVLO to charge-
pump enable
VUVLO < VIN < VOVLO, RLOAD = 100Ω,
CLOAD = 300µF, VOUT = from 10% of VOUT
to 80% of VOUT
VUVLO < VIN < VOVLO, to ACOK low
VIN < VUVLO or VIN > VOVLO, to internal
switch off
Overcurrent fault to internal switch turn-off
15
ms
6
ms
30
ms
2
20
µs
10
µs
Autoretry Time
tRETRY
From overcurrent fault to internal switch
turn-on
15
ms
Note 1: All specifications are 100% production tested at TA = +25°C, unless otherwise noted. Specifications are over -40°C to +85°C
and are guaranteed by design.
(TA = +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
300
MAX4944
270
240
210
180
150
120
90
60
30
0
2 6 10 14 18 22 26
SUPPLY VOLTAGE (V)
Typical Operating Characteristics
RON
vs. TEMPERATURE
140
120
100
80
60
40
20
0
-40 -15
10
35
60
85
TEMPERATURE (°C)
NORMALIZED UVLO THRESHOLD
vs. TEMPERATURE
1.010
1.008
1.006
1.004
1.002
1.000
0.998
0.996
0.994
0.992
0.990
-40 -15
10
35
60
85
TEMPERATURE (°C)
_______________________________________________________________________________________ 3
Share Link: 