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參數(shù)資料
| 型號(hào)： | MAX1845ETX |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Dual, High-Efficiency, Step-Down Controller with Accurate Current Limit |
| 中文描述： | DUAL SWITCHING CONTROLLER, 620 kHz SWITCHING FREQ-MAX, QCC36 |
| 封裝： | 6 X 6 MM, 0.80 MM, MO220WJJD-1, TQFN-36 |
| 文件頁(yè)數(shù)： | 7/27頁(yè) |
| 文件大?。?/td> | 543K |
| 代理商： | MAX1845ETX |
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M
Dual, High-Efficiency, Step-Down
Controller with Accurate Current Limit
_______________________________________________________________________________________
7
0
4.5
3.0
1.5
6.0
7.5
9.0
10.5
12.0
13.5
15.0
5
15
10
20
25
30
M
SUPPLY VOLTAGE V+ (V)
S
NO-LOAD SUPPLY CURRENT
vs. INPUT VOLTAGE (SKIP = V
CC
)
I
CC
V
CC
= V
DD
= 5V
I
DD
I+ (25
μ
A TYP)
0
100
200
300
400
500
600
700
800
900
1000
1100
M
SUPPLY VOLTAGE V+ (V)
S
μ
A
5
10
15
20
25
30
NO-LOAD SUPPLY CURRENT
vs. INPUT VOLTAGE (SKIP = GND)
V
CC
= V
DD
= 5V
I
DD
(600nA typ)
I
CC
I+
10
0.01
10
1
0.1
LOAD CURRENT (A)
60
70
80
90
100
40
50
20
30
M
E
EFFICIENCY vs. LOAD CURRENT
(8A COMPONENTS, SKIP = V
CC
)
V+ = 7V
V+ = 20V
V+ = 12V
OUT1 = 1.8V
50
0.01
10
1
0.1
LOAD CURRENT (A)
75
80
85
90
95
100
65
60
70
55
M
E
EFFICIENCY vs. LOAD CURRENT
(8A COMPONENTS, SKIP = GND)
V+ = 7V
V+ = 20V
OUT1 = 1.8V
V+ = 12V
10
50
30
70
90
110
130
150
170
190
210
230
250
0
0.5
1.0
1.5
2.0
2.5
CURRENT-LIMIT TRIP POINT
vs. ILIM VOLTAGE
M
ILIM VOLTAGE (V)
C
10
0.01
10
1
0.1
LOAD CURRENT (A)
60
70
80
90
100
40
50
20
30
M
E
EFFICIENCY vs. LOAD CURRENT
(4A COMPONENTS, SKIP = V
CC
)
V+ = 7V
V+ = 20V
V+ = 12V
OUT2 = 2.5V
80
75
0.01
10
1
0.1
LOAD CURRENT (A)
95
100
90
85
M
E
EFFICIENCY vs. LOAD CURRENT
(4A COMPONENTS, SKIP = GND)
V+ = 7V
V+ = 12V
V+ = 20V
OUT2 = 2.5V
1.0
1.2
1.1
1.4
1.3
1.6
1.5
1.7
1.9
1.8
2.0
1.0
1.2
1.3
OVP VOLTAGE (V)
1.1
1.4
1.5
1.6
1.7
1.8
M
N
NORMALIZED OVERVOLTAGE PROTECTION
THRESHOLD vs. OVP VOLTAGE
I
2A/div
20μs/div
V
100mV/div
LOAD-TRANSIENT RESPONSE
(4A COMPONENTS, PWM MODE, V
OUT2
= 2.5V)
Typical Operating Characteristics (continued)
(Circuit of Figure 1, components from Table 1, V
IN
= 15V,
SKIP
= GND, TON = unconnected, T
A
= +25
°
C, unless otherwise noted.)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1845ETX+ | 功能描述:電流型 PWM 控制器 Step-Down Controller RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| MAX1845ETX+T | 功能描述:電流型 PWM 控制器 Step-Down Controller RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| MAX1845ETX-T | 功能描述:電流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| MAX1845ETX-TG068 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX1845EVKIT | 功能描述:電源管理IC開發(fā)工具 Evaluation Kit for the MAX1845 RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
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