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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： | 2/9页 |
| 文件大小： | 323K |
| 代理商： | MAX1848 |
M
White LED Step-Up Converter in SOT23
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
V+ to GND................................................................-0.3V to +6V
PGND to GND .......................................................-0.3V to +0.3V
LX, OUT to GND.....................................................-0.3V to +14V
LX to OUT...............................................................-14V to +0.3V
CTRL to GND.......................................-0.3V to +6V or (V+ + 2V)
COMP, CS to GND.......................................-0.3V to (V+ + 0.3V)
LX Current ....................................................................0.45A
RMS
DC ELECTRICAL CHARACTERISTICS
(V+ = 3V, V
OUT
= 11V, L = 33μH, C
OUT
= 1μF, C
COMP
= 0.15μF, R
SENSE
= 5
, V
CTRL
= 1V,
T
A
=
0
°
C to +85
°
C
, unless otherwise
noted. Typical values are at T
A
= +25
°
C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Continuous Power Dissipation (T
A
= +70
°
C)
8-Pin SOT23 (derate 9.7mW/
°
C above +70
°
C).............777mW
8-Pin Thin QFN 3mm
3mm (derate 24.4mW/
°
C
above +70
°
C)..............................................................1951mW
Operating Temperature Range ...........................-40
°
C to +85
°
C
Junction Temperature......................................................+150
°
C
Storage Temperature Range.............................-60
°
C to +150
°
C
Lead Temperature (soldering, 10s).................................+300
°
C
PARAMETER
CONDITIONS
MIN
2.6
2.15
2.10
TYP
MAX
5.5
2.59
2.56
0.40
2
1
UNITS
V
Supply Voltage
V+ rising, 40mV hysteresis typical
V+ falling
Not switching, V
CTRL
= V
CS
= V+
Switching, V
CTRL
= V+, V
CS
= GND
2.38
2.34
0.25
1
0.3
0.3
13.25
12.25
20
0.01
Undervoltage Lockout Threshold
V
Quiescent Current
mA
T
A
= +25
°
C
T
A
= +85
°
C
Shutdown Supply Current
V
CTRL
= GND
μA
V+ rising, 1V hysteresis typical
V+ falling
12.5
11.5
10
14.0
13
30
1
Overvoltage Threshold
V
V
CTRL
> 0.25V
V
CTRL
= GND
OUT Input Bias Current
V
OUT
= 13V
μA
Output Voltage Range
V+ -
V
D OD E
12.5
V
ERROR AMPLIFIER
CTRL to CS Regulation
CS Input Bias Current
CTRL Input Resistance
CTRL Dual Mode Threshold
CS Line Regulation
COMP Pin Resistance to Ground
COMP Output Voltage Swing
OSCILLATOR
Operating Frequency
V
CTRL
= 2V, V+ = 2.6V to 5.5V
V
CS
= V
CTRL
/13.33
71
75
0.01
670
170
0.05
15
81
1
1100
240
mV/V
μA
k
mV
%/V
k
V
450
100
Hysteresis = 25mV typical
V+ = 2.6V to 5.5V, V
CTRL
= 3V
Device in shutdown or overvoltage
7.5
0.3
50
2.4
1.0
1.2
12
0
90
1.5
MHz
PWM mode
Pulse skipping
V
CTRL
= V+, V
CS
= GND
Minimum Duty Cycle
%
Maximum Duty Cycle
85
97
%
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 |
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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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