參數(shù)資料
型號： MAX1857
廠商： Maxim Integrated Products, Inc.
元件分類： 數(shù)字信號處理
英文描述： Replaced by TMS320C6202B : Fixed-Point Digital Signal Processor 352-FCBGA
中文描述： 500mA、具有紋波抑制的LDO，µMAX封裝
文件頁數(shù)： 2/10頁
文件大小： 245K
代理商： MAX1857
M
500mA, Low-Dropout,
Ripple-Rejecting LDO in μMAX
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
IN,
SHDN
,
RST
, SET to GND....................................-0.3V to +6V
OUT to GND ................................................-0.3V to (V
IN
+ 0.3V)
Output Short-Circuit Duration........................................Indefinite
Continuous Power Dissipation (T
A
= +70°C)
8-Pin μMAX (derate 4.5mW/°C above +70°C).............362mW
ELECTRICAL CHARACTERISTICS
(V
IN
= +5.25V, V
OUT
= 4.75V,
SHDN
= IN, SET = GND,
T
A
= 0°C to +85°C
, unless otherwise noted. Typical values are at T
A
= +25°C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
PARAMETER
SYMBOL
V
IN
V
UVLO
CONDITIONS
MIN
2.5
2.0
-1
-1.5
-2
TYP
MAX
5.5
2.3
+1
+1.5
+2
UNITS
V
V
Input Voltage
Input Undervoltage Lockout
Rising, 75mV hysteresis
2.15
V
OUT
≥
2.5V
V
OUT
< 2.5V
I
OUT
= 100mA,
T
A
= +85
°
C
I
OUT
= 100mA, T
A
= 0
°
C to +85
°
C
%
Output Voltage Accuracy
(Preset Mode)
V
OUT
I
OUT
= 1mA to 500mA, V
IN
> V
OUT
+ 0.5V,
T
A
= 0
°
C to +85
°
C
-3
+3
%
Adjustable Output Voltage
Range
V
SET
= 1.25V
1.25
5
V
T
A
= +85
°
C
1.229
1.250
1.271
SET Voltage Threshold
(Adjustable Mode)
V
SET
V
IN
= +2.7V,
V
OUT
set to 2.0V,
I
OUT
= 100mA
T
A
= 0
°
C to +85
°
C
1.219
1.281
V
Maximum Output Current
Short-Circuit Current Limit
In-Regulation Current Limit
SET Dual Mode
Threshold
SET Input Bias Current
I
OUT
I
LIM
V
IN
≥
2.7V
V
OUT
= 0, V
IN
≥
2.7V
V
OUT
> 96% of nominal value, V
IN
≥
2.7V
500
0.55
mA
RMS
A
A
mV
nA
1.2
2.0
100
2.2
50
-100
150
+100
250
I
SET
V
SET
= 1.25V
I
OUT
= 1mA
I
OUT
= 500mA
135
175
Ground-Pin Current
I
Q
μ
A
Dropout Voltage (Note 1)
V
IN
-
V
OUT
I
OUT
= 500mA
120
175
mV
Line Regulation
V
LNR
V
IN
from (V
OUT
+ 100mV) to 5.5V,
I
LOAD
= 5mA
I
OUT
= 1mA to 500mA
10Hz to 1MHz, C
OUT
= 3.3
μ
F (ESR < 0.1
)
-0.15
0
+0.15
%/V
Load Regulation
Output Voltage Noise
SHUTDOWN
Shutdown Supply Current
V
LDR
0.4
115
1.0
%
μ
V
RMS
I
OFF
V
IH
V
IL
SHDN
= GND, V
IN
= 5.5V
2.5V < V
IN
< 5.5V
2.5V < V
IN
< 5.5V
SHDN
= IN or GND
0.1
15
μ
A
1.6
SHDN
Input Threshold
0.6
100
V
SHDN
Input Bias Current
10
nA
Dual Mode is a trademark of Maxim Integrated Products.
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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(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
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(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
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(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
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(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
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
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