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參數(shù)資料
| 型號： | MAX8531ETT |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Dual Low-Dropout Linear Regulators with RESETor Low-Noise Output in UCSP or QFN |
| 中文描述： | 雙低壓差線性穩(wěn)壓器與RESETor低噪聲的輸出UCSP或QFN封裝 |
| 文件頁數(shù)： | 6/12頁 |
| 文件大?。?/td> | 280K |
| 代理商： | MAX8531ETT |
M
Detailed Description
The MAX8530/MAX8531 are low-power, low-dropout,
low-quiescent current linear regulators with reset
designed primarily for battery-powered applications.
For preset output voltages, refer to the
Output Voltage
Selector Guide
. Other combinations between 1.5V and
3.3V are available in 50mV increments. This device
supplies loads up to 200mA for OUT1 and 150mA for
OUT2. The MAX8530/MAX8531 consist of a 1.25V ref-
erence, error amplifiers, P-channel pass transistors,
reset block, and internal feedback voltage-dividers.
The 1.25V bandgap reference is connected to the error
amplifier
’
s inverting input. The error amplifier compares
this reference with the feedback voltage and amplifies
the difference. If the feedback voltage is lower than the
reference voltage, the pass-transistor gate is pulled
lower, allowing more current to pass to the output and
increasing the output voltage. If the feedback voltage is
too high, the pass-transistor gate is pulled up, allowing
less current to pass to the output. The output voltage is
fed back through an internal resistor voltage-divider
connected to the OUT_ pin.
RESET
The reset circuit is active at power-up and power-down.
RESET
is held low at power-up. The reset timing starts
once the OUT1 voltage reaches 87% (typ) of its regula-
tion voltage. The
RESET
signal goes high 200ms (typ)
after the OUT1 voltage reaches 87% (typ) of its regulation
voltage. At power-off,
RESET
goes low when the OUT1
voltage is below 87% (typ) of its regulation voltage.
Dual Low-Dropout Linear Regulators
with
RESET
or Low-Noise Output in UCSP or QFN
6
_______________________________________________________________________________________
P
N
ERROR
AMP
IN
SHDN
GND
OUT1
RESET*
* MAX8530 ONLY
**MAX8531 ONLY
BP**
OUT2
MOS
DRIVER
WITH I
LIMIT
DELAY
THERMAL
SENSOR
LDO2
87%
REF
1.25V
REF
SHUTDOWN
AND
POWER-ON
CONTROL
MAX8530
MAX8531
Functional Diagram
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX8531ETTA8 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX8531ETTA8-T | 功能描述:低壓差穩(wěn)壓器 - LDO Dual Low-Dropout Linear Regulator RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MAX8531ETTGG | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX8531ETTGG-T | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX8531EUAA8 | 制造商:Maxim Integrated Products 功能描述: |
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