參數(shù)資料
型號： MAX1857EUA47
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 基準電壓源/電流源
英文描述： 500mA, Low-Dropout, Ripple-Rejecting LDO in MAX
中文描述： FIXED/ADJUSTABLE POSITIVE LDO REGULATOR, 0.175 V DROPOUT, PDSO8
封裝： MICRO MAX PACKAGE-8
文件頁數(shù)： 9/10頁
文件大?。?/td> 245K
代理商： MAX1857EUA47
nents of the output response: a DC shift from the output
impedance due to the load current change, and the
transient response. A typical transient response for a
step change in the load current from 5mA to 500mA is
18mV. Increasing the output capacitor
’
s value and
decreasing the ESR attenuates the overshoot.
Input-Output (Dropout) Voltage
A regulator
’
s minimum input-to-output voltage differen-
tial (dropout voltage) determines the lowest usable sup-
ply voltage. In battery-powered systems, this
determines the useful end-of-life battery voltage.
Because the MAX1857 uses a P-channel MOSFET pass
transistor, its dropout voltage is a function of drain-to-
source on-resistance (R
DS(ON)
) multiplied by the load
current (see
Typical Operating Characteristics
):
V
DROPOUT
= V
IN
- V
OUT
= R
DS(ON)
x I
OUT
The MAX1857 ground current remains below 150μA in
dropout.
M
500mA, Low-Dropout,
Ripple-Rejecting LDO in μMAX
_______________________________________________________________________________________
9
Chip Information
TRANSISTOR COUNT: 845
相關(guān)PDF資料
PDF描述
MAX1857 Replaced by TMS320C6202B : Fixed-Point Digital Signal Processor 352-FCBGA
MAX1858 Dual 180∑ Out-of-Phase Buck Controllers with Sequencing/Prebias Startup and POR
MAX1858EEG Dual 180∑ Out-of-Phase PWM Step-Down Controller with Power Sequencing and POR
MAX1858A-MAX1876A Dual 180∑ Out-of-Phase Buck Controllers with Sequencing/Prebias Startup and POR
MAX1858A Dual 180?Out-of-Phase Buck Controllers with Sequencing/Prebias Startup and POR
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1857EUA47+ 功能描述:低壓差穩(wěn)壓器 - LDO 500mA Ripple-Rejecting 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
MAX1857EUA47+T 功能描述:低壓差穩(wěn)壓器 - LDO 500mA Ripple-Rejecting 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
MAX1857EUA47-T 功能描述:低壓差穩(wěn)壓器 - LDO 500mA Ripple-Rejecting 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
MAX1858AEEG 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
MAX1858AEEG+ 功能描述:電壓模式 PWM 控制器 Dual 180 Out Buck Controllers RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓撲結(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
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