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参数资料
| 型号： | MAX1848ETA |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | Replaced by TMS320VC5506 : DSP (DSP Only) for Embedded V90 Modem Solution [Not Recommended For New Designs (NRND)] 144-BGA MICROSTAR |
| 中文描述： | 0.85 A SWITCHING REGULATOR, 1600 kHz SWITCHING FREQ-MAX, QCC8 |
| 封装： | 3 X 3 MM, 0.80 MM HEIGHT, TQFN-8 |
| 文件页数： | 5/9页 |
| 文件大小： | 323K |
| 代理商： | MAX1848ETA |
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+
相关PDF资料 |
PDF描述 |
|---|---|
| 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 |
| MAX1854 | High-Speed, Adjustable, Synchronous Step-Down Controllers with Integrated Voltage Positioning |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| 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 |
| MAX1848EVKIT | 功能描述:LED 照明开发工具 Evaluation Kit for the MAX1848 RoHS:否 制造商:Fairchild Semiconductor 产品:Evaluation Kits 用于:FL7732 核心: 电源电压:120V 系列: 封装: |
| MAX184ACNG | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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