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參數(shù)資料
| 型號： | MAX1848EKA |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | White LED Step-Up Converter in SOT23 |
| 中文描述： | 0.85 A SWITCHING REGULATOR, 1600 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | SOT-23, 8 PIN |
| 文件頁數(shù)： | 4/9頁 |
| 文件大?。?/td> | 323K |
| 代理商： | MAX1848EKA |
M
White LED Step-Up Converter in SOT23
4
_______________________________________________________________________________________
Typical Operating Characteristics
(See
Typical Application Circuit
, V+ = 3V, I
LED
= 15mA, L = 33μH, C
OUT
= 1μF, C
COMP
= 0.15μF, R
SENSE
= 5
, CTRL = 1V, 2 LEDs,
T
A
= +25
°
C, unless otherwise noted.)
80
82
86
84
88
90
2.5
3.5
SUPPLY VOLTAGE (V)
3.0
4.0
4.5
5.0
5.5
EFFICIENCY vs. SUPPLY VOLTAGE
M
E
2 LEDs
3 LEDs
I
OUT
= 15mA
90
85
80
75
70
0
30
10
20
40
50
60
EFFICIENCY vs. LOAD CURRENT
M
LOAD CURRENT (mA)
E
2 LEDs
3 LEDs
SWITCHING FREQUENCY
vs. SUPPLY VOLTAGE
M
SUPPLY VOLTAGE (V)
S
1.1
1.2
1.3
1.4
2.5
3.5
3.0
4.0
4.5
5.0
5.5
T
A
= +85
°
C
T
A
= +25
°
C
T
A
= -40
°
C
50ms/div
POWER-UP WAVEFORMS
V
CTRL
I
IN
I
LED
0
1V
38mA
0
15mA
MAX1848 toc04
0
t
RISE
= 15ms
C
COMP
= 0.15
μ
F
50ms/div
POWER-UP WAVEFORMS
V
CTRL
I
IN
I
LED
0
1V
38mA
0
MAX1848 toc05
15mA
0
t
RISE
= 110ms
C
COMP
= 1
μ
F
20
μ
s/div
SHUTDOWN WAVEFORMS
V
CTRL
I
IN
I
LED
0
1V
38mA
0
MAX1848 toc06
15mA
0
2
μ
s/div
SHUTDOWN WAVEFORMS
V
CTRL
V
OUT
V
COMP
0
1V
6.3V
4.9V
MAX1848 toc07
1.5V
0
V
EVENTUALLY
DECAYS TO V+ = 3V
5ms/div
LINE-TRANSIENT RESPONSE
V
IN
V
OUT
I
LED
3.00V
3.50V
6.25V
500mV/div
15mA
10mA/div
C
COMP
= 0.15
μ
F
20ms/div
V
CTRL
TRANSIENT RESPONSE
V
CTRL
V
OUT
I
LED
1.0V
2.0V
6.7V
6.3V
30mA
15mA
C
COMP
= 0.15
μ
F
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1848EKA-T | 功能描述:LED照明驅(qū)動器 White LED Step-Up RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| MAX1848ETA | 制造商:Maxim Integrated Products 功能描述:HIGH-EFFICIENCY, UNIFORM-BRIGHTNESS, WHITE LE - Rail/Tube |
| MAX1848ETA+ | 制造商:Maxim Integrated Products 功能描述:LED DRVR 3SEGMENT 2.6V TO 5.5V 8PIN SOT-23 - Rail/Tube |
| MAX1848ETA+T | 功能描述:LED照明驅(qū)動器 White LED Step-Up RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| MAX1848ETA-T | 功能描述:LED照明驅(qū)動器 White LED Step-Up RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
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