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)： 5/10頁
文件大?。?/td> 245K
代理商： MAX1857
M
500mA, Low-Dropout,
Ripple-Rejecting LDO in μMAX
_______________________________________________________________________________________
5
80
70
60
50
40
30
20
10
0
0.01
1
10
0.1
100
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
M
FREQUENCY (kHz)
P
1000
C
OUT
= 3.3
μ
F
I
OUT
= 50mA
LOAD-TRANSIENT RESPONSE
MAX1857 toc05
10
μ
s/div
4.80V
0
600mA
4.75V
4.70V
400mA
200mA
A: V
OUT
= 4.75V, 50mV/div
B: I
= 5mA TO 500mA, 200mA/div
V
IN
= 5.25V, C
IN
= 10
μ
F
SWITCHING POWER-SUPPLY
RIPPLE REJECTION
A
B
LOAD-TRANSIENT RESPONSE
NEAR DROPOUT
MAX1857 toc06
10
μ
s/div
0
4.80V
4.75V
4.70V
4.65V
400mA
200mA
A: V
OUT
= 4.75V, 50mV/div
B: I
= 5mA TO 500mA, 200mA/div
V
IN
= V
OUT
+ 100mV = 4.85V, C
IN
= 10
μ
F
A
B
MAX1857 toc07
2
μ
s/div
5.0V
4.75V
A: MAX1632: V
IN
= 9V, V
OUT
= 5.0V, 20mV/div
B: MAX1857: V
OUT
= 4.75V, I
OUT
= 500mA, 2mV/div
OUT
MAX1632
= IN
MAX1857
A
B
RST WAVEFORM
MAX1857 toc09
20ms/div
A: V
IN
= 0 TO 5.5V, 2V/div
B: V
OUT
= 4.75V, R
OUT
= 95
, 2V/div
C: V
RST
, 100k
TO OUT, 2V/div
A
B
0
0
0
C
Typical Operating Characteristics (continued)
(V
IN
= +5.25V, V
OUT
= 4.75V,
SHDN
= IN, SET = GND, C
IN
= 1μF, C
OUT
= 3.3μF, T
A
= +25
°
C, unless otherwise noted.)
SHUTDOWN WAVEFORM
MAX1857 toc08
40
μ
s/div
6V
2V
A: V
SHDN
= 0 TO 2V, 1V/div
B: V
OUT
= 4.75V, 2V/div
R
OUT
= 9.5
(500mA)
A
B
2V
1V
0
4V
0
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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 安裝風格: 封裝 / 箱體:CPAK
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