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參數(shù)資料
| 型號： | MAX4945BELA+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 4/10頁 |
| 文件大小： | 0K |
| 描述： | IC CTLR OVP W/FET 5.80V 8-UDFN |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 類型： | 過壓保護(hù)控制器 |
| 應(yīng)用： | 手機(jī)，數(shù)碼相機(jī)，媒體播放器 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-WFDFN |
| 供應(yīng)商設(shè)備封裝： | 8-uDFN（2x2） |
| 包裝： | 帶卷 (TR) |
MAX4943–MAX4946/MAX4944L/MAX4945A/MAX4945L/MAX4949
Overvoltage-Protection Controllers with
Internal FET
_______________________________________________________________________________________
3
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
ACOK Output-Low Voltage
VOL
ISINK = 1mA
0.4
V
ACOK High-Leakage Current
VACOK = 5.5V
1
A
Thermal Shutdown
+175
°C
Thermal-Shutdown Hysteresis
40
°C
Load Capacitor
300
F
TIMING CHARACTERISTICS (Figure 2)
Debounce Time
tINDBC
Time from VUVLO < VIN < VOVLO to charge-
pump enable
15
ms
Switch Turn-On Time
tON
VUVLO < VIN < VOVLO, RLOAD = 100
Ω,
CLOAD = 300F, VOUT = from 10% of VOUT
to 80% of VOUT
6ms
ACOK Assertion Time
t ACOK
VUVLO < VIN < VOVLO, to ACOK low
30
ms
VIN < VUVLO or VIN > VOVLO, to internal
switch off
220s
Switch Turn-Off Time
tOFF
Overcurrent fault to internal switch turn-off
10
s
Autoretry Time
tRETRY
From overcurrent fault to internal switch
turn-on
15
ms
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)
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.
Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
0
90
60
30
120
150
180
210
240
270
300
210
614
18
22
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX4943
toc01
SUPPLY VOLTAGE (V)
SUPPLY
CURRENT
(nA)
26
MAX4944
0
60
40
20
80
100
120
140
RON
vs. TEMPERATURE
MAX4943
toc02
TEMPERATURE (
°C)
R
ON
(m
Ω
)
-40
10
-15
356085
0.990
0.996
0.994
0.992
0.998
1.000
1.002
1.004
1.006
1.008
1.010
-40
10
-15
35
60
85
NORMALIZED UVLO THRESHOLD
vs. TEMPERATURE
MAX4943
toc03
TEMPERATURE (
°C)
NORMALIZED
UVLO
THRESHOLD
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