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參數資料
| 型號： | MAX1842 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 1A/2.7A, 1MHz, Step-Down Regulators with Synchronous Rectification and Internal Switches |
| 中文描述： | 1A/2.7A、1MHz、降壓型穩(wěn)壓器，內置同步整流與開關 |
| 文件頁數： | 7/16頁 |
| 文件大?。?/td> | 597K |
| 代理商： | MAX1842 |
M
1A/2.7A, 1MHz, Step-Down Regulators with
Synchronous Rectification and Internal Switches
_______________________________________________________________________________________
7
Typical Operating Characteristics (continued)
(Circuit of Figure 1, T
A
= +25
°
C, unless otherwise noted.)
0.001
0.01
0.1
1
10
MAX1842
EFFICIENCY vs. OUTPUT CURRENT
(V
IN
= 5.0V, L = 2.5
μ
H)
M
OUTPUT CURRENT (A)
V
OUT
= 1.5V, R
TOFF
= 1OOk
,
f
PWM
= 770kHz
V
OUT
= 1.8V, R
TOFF
= 75k
,
f
PWM
= 910kHz
V
OUT
= 2.5V, R
TOFF
= 47k
,
f
PWM
= 1070kHz
100
95
90
85
80
70
65
60
55
50
75
E
0.001
0.01
0.1
1
10
MAX1842
EFFICIENCY vs. OUTPUT CURRENT
(V
IN
= 3.3V, L = 1.5
μ
H)
M
OUTPUT CURRENT (A)
MAX1842
NORMALIZED OUTPUT ERROR
vs. OUTPUT CURRENT
V
OUT
= 2.5V, R
TOFF
= 56k
,
f
PWM
= 1000kHz
V
OUT
= 2.5V, R
TOFF
= 39k
,
f
PWM
= 610kHz
V
OUT
= 1.8V, R
TOFF
= 43k
,
f
PWM
= 1050kHz
100
95
90
85
80
70
65
60
55
50
75
E
0.001
0.01
0.1
1
10
MAX1842
EFFICIENCY vs. OUTPUT CURRENT
(f
PWM
= 270kHz)
M
I
OUT
(A)
V
= 3.3V, V
OUT
= 1.8V,
L = 4.7
μ
H, R
TOFF
= 160k
100
95
90
85
80
70
65
60
55
50
75
E
V
IN
= 5V, V
OUT
= 1.8V, L = 5.6
μ
H,
R
TOFF
= 240k
M
0.001
0.01
0.1
1
10
OUTPUT CURRENT (A)
V
IN
= 3.3V, V
OUT
= 1.5V, L = 1.5
μ
H
V
IN
= 5V, V
OUT
= 1.5V, L = 2.5
μ
H
0.1
0
-0.1
-0.2
-0.3
-0.4
N
0
400
200
800
600
1000
1200
0
1.0
OUTPUT CURRENT (A)
1.5
0.5
2.0
2.5
3.0
MAX1842
SWITCHING FREQUENCY
vs. OUTPUT CURRENT
M
F
V
IN
= 5V, V
OUT
= 2.5V, L = 2.5
μ
H
V
IN
= 3.3V, V
OUT
= 1.5V, L = 1.5
μ
H
V
IN
= 5V, V
OUT
= 1.5V, L = 2.5
μ
H
0
0
0
0
MAX1842
STARTUP AND SHUTDOWN
V
2V/div
MAX1842 toc16
V
SHDN
5V/div
R
OUT
= 0.5
, R
TOFF
= 56k
V
IN
= 3.3V, V
OUT
= 1.5V
I
INPUT
1A/div
V
OUTPUT
1V/div
1ms/div
相關PDF資料 |
PDF描述 |
|---|---|
| MAX1742 | Replaced by TMS320C6410 : Digital Signal Processor 40-PDIP -40 to 85 |
| MAX1742-MAX1842 | Replaced by TMS320C6410 : Digital Signal Processor 40-PDIP 0 to 0 |
| MAX1742EEE | Replaced by TMS320C6410 : |
| MAX1843 | 2.7A, 1MHz, Low-Voltage, Step-Down Regulator with Internal Synchronous Rectification in QFN Package |
| MAX1843EGI | 2.7A, 1MHz, Low-Voltage, Step-Down Regulator with Internal Synchronous Rectification in QFN Package |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX1842EEE | 功能描述:直流/直流開關轉換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| MAX1842EEE+ | 功能描述:直流/直流開關調節(jié)器 1/2.7A 1MHz Step-Down RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MAX1842EEE+T | 功能描述:直流/直流開關調節(jié)器 1/2.7A 1MHz Step-Down RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MAX1842EEE-T | 功能描述:直流/直流開關轉換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| MAX1842EEE-TG074 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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