- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383338 > MAX1848 (Maxim Integrated Products, Inc.) Replaced by TMS320VC5506 : DSP (DSP Only) for Embedded V90 Modem Solution [Not Recommended For New Designs (NRND)] 144-LQFP PDF資料下載
參數(shù)資料
| 型號： | MAX1848 |
| 廠商： | 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升壓型轉(zhuǎn)換器，SOT23封裝 |
| 文件頁數(shù)： | 5/9頁 |
| 文件大?。?/td> | 323K |
| 代理商： | MAX1848 |
M
White LED Step-Up Converter in SOT23
_______________________________________________________________________________________
5
20ms/div
V
CTRL
TRANSIENT RESPONSE
V
CTRL
V
OUT
I
LED
1.0V
2.0V
6.7V
6.3V
30mA
15mA
C
COMP
= 1
μ
F
Typical Operating Characteristics (continued)
(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.)
200ns/div
SWITCHING WAVEFORMS
V
LX
I
L
V
IN_RIPPLE
0
6.5V
61mA
17mA
MAX1848 toc11
V
OUT_RIPPLE
10mV/div
10mV/div
Pin Description
PIN
NAME
FUNCTION
1
COMP
Compensation Pin for Error Amplifier. Connect capacitor from COMP to GND. Startup time is set
by the capacitance connected to this pin (0.833ms for each 0.01μF). V
COMP
passively
discharges to GND when in shutdown.
Brightness/Shutdown Dual Mode Control Input. LED brightness and IC shutdown are controlled
by the voltage on CTRL. Voltages between 250mV and 5.5V or (V+ + 2V), whichever is less,
adjust the brightness from dim to bright, respectively. To put the IC into shutdown, drive below
100mV or connect to GND.
Overvoltage Sense. When V
OUT
is greater than 13.25V, the internal N-channel MOSFET is turned
off and V
COMP
decays to GND. When V
OUT
drops below 12.25V, the IC will re-enter soft-start.
Connect a 1μF capacitor from OUT to GND.
2
CTRL
3
OUT
4
LX
Inductor Connection. Drain of the internal high-voltage N-channel MOSFET.
5
PGND
Power Ground. Source of the internal high-voltage N-channel MOSFET.
6
GND
Ground
7
CS
Current-Sense Feedback Input. Connect a resistor from this pin to GND to set the LED bias
current. This pin regulates to 7.5% of V
CTRL
.
Supply Voltage Input. The IC is powered from this pin. Input range is 2.6V to 5.5V. Bypass with a
ceramic capacitor to GND.
8
V+
相關PDF資料 |
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 |
相關代理商/技術參數(shù) |
參數(shù)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: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
發(fā)布緊急采購，3分鐘左右您將得到回復。