參數(shù)資料
型號： MAX887HESA
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 穩(wěn)壓器
英文描述： 100% Duty Cycle, Low-Noise, Step-Down, PWM DC-DC Converter
中文描述： 1.5 A SWITCHING REGULATOR, 350 kHz SWITCHING FREQ-MAX, PDSO8
封裝： 0.150 INCH, SOP-8
文件頁數(shù)： 4/12頁
文件大?。?/td> 146K
代理商： MAX887HESA
M
100% Duty Cyc le, Low-Noise,
S tep-Down, PWM DC-DC Converter
4
_______________________________________________________________________________________
____________________________Typic al Operating Charac teristic s (c ontinued)
(Circuit of Figure 2, T
A
= +25°C, unless otherwise noted.)
0
10
20
30
40
50
60
70
80
90
100
0.0001
0.001
OUTPUT CURRENT (A)
0.01
0.1
0.6
E
EFFICIENCY vs. OUTPUT CURRENT
M
IDLE MODE
(SYNC = GND)
V
OUT
= 3.3V
V
IN
= 5V
V
IN
= 7V
V
IN
= 9V
V
IN
= 11V
V
IN
= 4V
0
10
20
30
40
50
60
70
80
90
100
0.0001
0.001
OUTPUT CURRENT (A)
0.01
0.1
0.6
E
EFFICIENCY vs. OUTPUT CURRENT
M
IDLE MODE
(SYNC = GND)
V
OUT
= 5V
V
IN
= 5.5V
V
IN
= 9V
V
IN
= 7V
V
IN
= 11V
0
200
400
600
800
1000
1200
3
5
7
SUPPLY VOLTAGE (V)
9
11
13
15
17
M
MAXIMUM OUTPUT CURRENT
vs. SUPPLY VOLTAGE
M
GUARANTEED OUTPUT CURRENT
OF FIGURE 2 IS 600mA
3.3V SETTING, V
OUT
= 3.135V
5V SETTING, V
OUT
= 4.75V
0
200
400
600
800
1000
1200
0
100
200
300
400
500
600
M
SYNC FREQUENCY (kHz)
MAXIMUM OUTPUT CURRENT
vs. SYNC FREQUENCY
M
C2, C3 = 47μF
L1 = 33μH
V
IN
= 5V
V
OUT
= 3.3V
V
OUT
= -5% at I
OUT(MAX)
250
260
270
280
290
300
310
320
330
340
350
0
2
4
6
8
10
12
14
16
18
S
SUPPLY VOLTAGE (V)
SWITCHING FREQUENCY
vs. SUPPLY VOLTAGE
M
V
OUT
= 3.3V
0
0.5
1.5
2.5
3.5
3.0
2.0
1.0
Q
SUPPLY VOLTAGE (V)
QUIESCENT SUPPLY CURRENT
vs. SUPPLY VOLTAGE
M
A
A
A: V
OUT
= 3.3V, PWM MODE
B: V
OUT
= 3.3V, PFM MODE
0
2
4
6
8
10
12
14
16
18
C
B
0
0.5
1.0
1.5
2.0
2.5
3.0
-60 -40 -20 0
20 40 60 80 100 120 140
TEMPERATURE (°C)
Q
QUIESCENT CURRENT
vs.TEMPERATURE
M
PWM MODE
V
IN
= 5.3V
V
OUT
= 3.3V
PFM MODE
250
260
270
280
290
300
310
320
330
340
350
F
TEMPERATURE (°C)
SWITCHING FREQUENCY
vs. TEMPERATURE
M
V
OUT
= 3.3V
-60 -40 -20
0
20 40 60 80 100 120 140
4
-1
10k
10M
OUTPUT RIPPLE AND HARMONICS
0
2
3
1
M
FREQUENCY (Hz)
O
100k
1M
V
IN
= 5V
V
OUT
= 3.3V
I
= 500mA
PWM MODE
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX887HESA+ 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 100% Duty Step-Down DC/DC Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX887HESA+T 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 100% Duty Step-Down DC/DC Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX887HESA-T 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 100% Duty Step-Down DC/DC Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX8880ETT 制造商:Maxim Integrated Products 功能描述:- Rail/Tube
MAX8880ETT+ 制造商:Maxim Integrated Products 功能描述:LDO REG 1.25V TO 5V 0.4A 6TDFN EP - Rail/Tube
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