- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384655 > MAX1931EUB (MAXIM INTEGRATED PRODUCTS INC) Current-Limited Switch for Single USB Port PDF資料下載
參數(shù)資料
| 型號(hào)： | MAX1931EUB |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | Current-Limited Switch for Single USB Port |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO10 |
| 封裝： | MICRO MAX PACKAGE-10 |
| 文件頁數(shù)： | 6/8頁 |
| 文件大?。?/td> | 214K |
| 代理商： | MAX1931EUB |
M
Current-Limited Switch for Single USB Port
6
_______________________________________________________________________________________
_______________Detailed Description
The MAX1931 P-channel MOSFET power switch limits
output current to 0.64A (min) to 1.06A (max). When the
output current is increased beyond the current limit
(I
LIMIT
), the current also increases through the replica
switch (I
OUT
/ 6500). The current-limit error amplifier
compares the voltage to the internal 1.24V reference
and regulates the current back to the I
LIMIT
.
This switch is not bidirectional; therefore, the input volt-
age must be higher than the output voltage.
Continuous Short-Circuit Protection
The MAX1931 is a foldback short-circuit-protected
switch. In the event of an output short-circuit or current-
overload condition, the current through the switch is
foldback-current-limited to 500mA continuous.
Thermal Shutdown
The MAX1931 features thermal shutdown. The switch
turns off and the
FAULT
output goes low immediately
(no fault blanking) when the junction temperature
exceeds +165
°
C. When the MAX1931 cools 20
°
C, the
switch turns back on. If the fault short-circuit condition
is not removed, the switch cycles on and off, resulting
in a pulsed output.
FAULT Indicator
The MAX1931 provides a fault output (
FAULT
). A
100k
pullup resistor from
FAULT
to IN provides a
logic control signal. This open-drain output goes low
when any of the following conditions occur:
The input voltage is below the undervoltage lockout
(UVLO) threshold.
The die temperature exceeds the thermal shutdown
temperature limit of +165
°
C.
The device is in current limit and the 10ms fault-
blanking period is exceeded.
Fault Blanking
The MAX1931 features 10ms fault blanking. Fault
blanking allows current-limit faults, including momen-
tary short-circuit faults that occur when hot-swapping a
capacitive load, and also ensures that no fault is issued
during power-up. When a load transient causes the
device to enter current limit, an internal counter starts. If
the load fault persists beyond the 10ms fault-blanking
timeout, the
FAULT
output asserts low. Ensure that the
MAX1931
’
s input is adequately bypassed to prevent
input glitches from triggering spurious
FAULT
outputs.
Input voltage glitches less than 150mV do not cause a
Pin Description
NAME
FUNCTION
1, 3, 9
IN
Input. P-channel MOSFET source. Connect all IN pins together and bypass with a 1μF
ceramic capacitor to ground.
Switch Output. P-channel MOSFET drain. Connect all OUT pins together and bypass with a
0.1μF capacitor to ground.
PIN
2, 4, 8, 10
OUT
5
ON
GND
Active-Low Switch On Input. A logic low turns the switch on.
6
Ground
Fault-Indicator Output. This open-drain output goes low when the device is in thermal shut-
down, undervoltage lockout, or on a sustained (>10ms) current-limit condition.
7
FAULT
MAX1931
P
P
P
OUT
GND
1.24V
N
FAULT
ON
ON
CURRENT-LIMIT
AMPLIFIER
REPLICA
AMPLIFIER
ON
HOT
IN
CONTROL
CIRCUITRY
10ms
TIMER
Figure 1. Functional Diagram
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX1932 | Digitally Controlled, 0.5% Accurate, Safest APD Bias Supply |
| MAX1932ETC | Digitally Controlled, 0.5% Accurate, Safest APD Bias Supply |
| MAX1935ETA15 | 500mA, Low-Voltage Linear Regulator in Tiny QFN |
| MAX1935 | 500mA, Low-Voltage Linear Regulator in Tiny QFN |
| MAX1935ETA | Fixed-Point Digital Signal Processor 532-FCBGA |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1931EUB+ | 功能描述:電源開關(guān) IC - USB 1A Crnt-Ltd Switch for 2 USB Ports RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX1931EUB+T | 功能描述:電源開關(guān) IC - USB 1A Crnt-Ltd Switch for 2 USB Ports RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX1931EUB-T | 功能描述:電源開關(guān) IC - USB 1A Crnt-Ltd Switch for 2 USB Ports RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX1932ETC | 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
| MAX1932ETC/GG8 | 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。