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参数资料
| 型号： | MAX16834EVKIT+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/23页 |
| 文件大小： | 0K |
| 描述： | EVAL KIT FOR MAX16834 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 电流 - 输出 / 通道： | 1A |
| 输出及类型： | 1，非隔离 |
| 输出电压： | 28V |
| 特点： | 可调光 |
| 输入电压： | 7 ~ 28V |
| 已供物品： | 板 |
| 已用 IC / 零件： | MAX16834 |
MAX16834
High-Power LED Driver with Integrated High-Side LED
Current Sense and PWM Dimming MOSFET Driver
V IN
C1
L1
R1
LV
HV
D1
LED+
IN
UVEN
NDRV
CS
Q1
LEDs
R2
C2
R3
C5
SC
RT/SYNC
V CC
MAX16834
PWMDIM
DIMOUT
ON
OFF
C3
R4
Q2
LED-
C4
R5
R6
REF
REFI
SENSE+
OVP+
CLV
FLT
SGND
COMP
PGND
C7
C6
R8
R9
R10
C8
R7
V IN
Figure 3. Boost-Buck LED Driver (V LED+ < 28V)
ESR and the bulk capacitance are equal, allowing 50%
of the ripple for the bulk capacitance. The capacitance
Use the below equation to calculate the RMS current
rating of the output capacitor:
is given by:
C OUT ≥
I LED × 2 × D MAX
? V OUTRIPPLE × f SW
I COUT(RMS) =
(IL AVG × (1 - D MAX )) 2 × D MAX
+ ( IL A V G × D MAX ) 2 × ( 1 - D MAX )
where I LED is in amperes, C OUT is in farads, f SW is in
hertz, and ? V OUTRIPPLE is in volts. The remaining 50%
of allowable ripple is for the ESR of the output capaci-
tor. Based on this, the ESR of the output capacitor is
given by:
Input Capacitor
The input filter capacitor bypasses the ripple current
drawn by the converter and reduces the amplitude of
high-frequency current conducted to the input supply.
The ESR, ESL, and the bulk capacitance of the input
capacitor contribute to the input ripple. Use a low-ESR
ESR COUT <
? V OUTRIPPLE ( ? )
( IL P × 2 )
input capacitor that can handle the maximum input
RMS ripple current from the converter.
For the boost configuration, the input current is the
where IL P is the peak inductor current in amperes.
Maxim Integrated
same as the inductor current. For boost-buck
13
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX16834EVKIT+ | 功能描述:LED 照明开发工具 MAX16834 Eval Kit 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: |
| MAX16835ATE/V+ | 制造商:Maxim Integrated Products 功能描述:HIGH-VOLTAGE, 350MA, ADJUSTABLE LINEAR HIGH-BRIGHTNESS LED D - Rail/Tube |
| MAX16835ATE/V+T | 制造商:Maxim Integrated Products 功能描述:HIGH-VOLTAGE, 350MA, ADJUSTABLE LINEAR HIGH-BRIGHTNESS LED D - Tape and Reel |
| MAX16835ATE+ | 功能描述:LED照明驱动器 350mA Adj Linear HB 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 |
| MAX16835ATE+T | 功能描述:LED照明驱动器 350mA Adj Linear HB 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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