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參數(shù)資料
| 型號(hào)： | MAX6331TUR-T |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | VOLT REGULATOR|FIXED|+3.3V|TO-236|3PIN|PLASTIC |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 |
| 封裝： | SOT-23, 3 PIN |
| 文件頁數(shù)： | 5/8頁 |
| 文件大?。?/td> | 223K |
| 代理商： | MAX6331TUR-T |
MAX6330/MAX6331
Precision Shunt Regulators with Reset
in SOT23-3
_______________________________________________________________________________________
5
______________________________________________________________Pin Description
PIN
FUNCTION
1
Ground
2
—
Inverting Reset Output. RESET remains low while VSHUNT is below the reset threshold and
for 140ms after VSHUNT rises above the threshold.
—
2
Noninverting Reset Output. RESET remains high while VSHUNT is below the reset threshold
and for 140ms after VSHUNT rises above the threshold.
3
Regulated Shunt Voltage (+5V, +3.3V, or +3.0V)
NAME
GND
RESET
SHUNT
MAX6331
MAX6330
_______________Detailed Description
Reset Output
A microprocessor’s (P’s) reset input starts the P in a
known state. The MAX6330/MAX6331 P supervisory
circuits assert reset to prevent code-execution errors
during power-up, power-down, or brownout conditions.
RESET is guaranteed to be a logic low for VSHUNT >
1V. Once VSHUNT exceeds the reset threshold, an
internal timer keeps RESET low for the reset timeout
period; after this interval, RESET goes high.
If a brownout condition occurs (VSHUNT dips below the
reset threshold), RESET goes low. When VSHUNT falls
below the reset threshold, the internal timer resets to
zero and RESET goes low. The internal timer starts after
VSHUNT returns above the reset threshold, and RESET
then remains low for the reset timeout period.
The MAX6331 has an active-high RESET output that is
the inverse of the MAX6330’s RESET output.
Shunt Regulator
The shunt regulator consists of a pass device and a
controlling circuit, as illustrated in Figure 1. The pass
device allows the regulator to sink current while regu-
lating the desired output voltage within a ±1.5% toler-
ance. The shunt current range (ISHUNT) is 100A to
50mA.
The pass transistor in the MAX6330/MAX6331 main-
tains a constant output voltage (VSHUNT) by sinking the
necessary amount of shunt current. When ILOAD (see
Typical Operating Circuit) is at a maximum, the shunt
current is at a minimum, and vice versa:
IIN = ISHUNT + ILOAD = (VIN - VSHUNT) / RS
Consider the following information when choosing the
external resistor RS:
1) The input voltage range, (VIN)
2) The regulated voltage, (VSHUNT)
3) The output current range, (ILOAD)
Choose RS as follows:
(VIN(max) - VSHUNT (min)) / (50mA + ILOAD(min))
≤ RS ≤
(VIN(min) - VSHUNT (max)) / (100A + ILOAD(max))
Choose the largest nominal resistor value for RS that
gives the lowest current consumption. Provide a safety
margin to incorporate the worst-case tolerance of the
MAX6330
MAX6331
VIN
RS
VSHUNT
ILOAD
ISHUNT
IIN
CL
SHUNT
RESET
GENERATOR
140ms
TIMEOUT
RESET
(RESET)
1.2V
GND
( ) ARE FOR MAX6331
Figure 1. Functional Diagram
相關(guān)PDF資料 |
PDF描述 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX6332_V3 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:3-Pin, Ultra-Low-Voltage, Low-Power ??P Reset Circuits |
| MAX6332UR | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:3-Pin, Ultra-Low-Voltage, Low-Power uP Reset Circuits |
| MAX6332UR16D1 | 制造商:Maxim Integrated Products 功能描述:3-PIN ULTRA-LOW-VOLTAGE LOW-POWER - Rail/Tube |
| MAX6332UR16D1+ | 制造商:Maxim Integrated Products 功能描述:PROCESSOR SUPERVISOR 1.6V 3.3UA 3PIN SOT-23 - Rail/Tube |
| MAX6332UR16D1+T | 功能描述:監(jiān)控電路 3-Pin uPower Reset Circuit RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
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