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参数资料
| 型号： | MAX1848 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | Replaced by TMS320VC5506 : DSP (DSP Only) for Embedded V90 Modem Solution [Not Recommended For New Designs (NRND)] 144-LQFP |
| 中文描述： | 白光LED升压型转换器，SOT23封装 |
| 文件页数： | 4/9页 |
| 文件大小： | 323K |
| 代理商： | MAX1848 |
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
相关PDF资料 |
PDF描述 |
|---|---|
| MAX1848ETA | Replaced by TMS320VC5506 : DSP (DSP Only) for Embedded V90 Modem Solution [Not Recommended For New Designs (NRND)] 144-BGA MICROSTAR |
| MAX1848EKA | White LED Step-Up Converter in SOT23 |
| MAX1855 | Fixed-Point Digital Signal Processor 352-FC/CSP 0 to 0 |
| MAX1854EEG | High-Speed, Adjustable, Synchronous Step-Down Controllers with Integrated Voltage Positioning |
| MAX1855EEG | Replaced by TMS320C6202B : Fixed-Point Digital Signal Processor 352-FCBGA |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1848EKA | 制造商:Maxim Integrated Products 功能描述:HIGH-EFFICIENCY UNIFORM-BRIGHTNESS - Rail/Tube |
| MAX1848EKA-T | 功能描述:LED照明驱动器 White LED Step-Up RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体: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照明驱动器 White LED Step-Up RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
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