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参数资料
| 型号： | MAX17061AETI+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 12/24页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR WHITE BCKLGT 28-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 拓扑： | PWM，升压（升压） |
| 输出数： | 8 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 车载，背光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 1MHz |
| 电源电压： | 4.5 V ~ 26 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 供应商设备封装： | 28-TQFN-EP（4x4） |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 85°C |
8-String White LED Driver with
SMBus for LCD Panel Applications
Fixed-Frequency Step-Up Controller
The MAX17061A ’s fixed-frequency, current-mode,
step-up controller automatically chooses the lowest
active FB_ voltage to regulate the output voltage.
Specifically, the difference between the lowest FB_ volt-
age and the current-source control signal plus an offset
(VSAT) is integrated at the CCV output. The resulting
error signal is compared to the external switch current
plus slope compensation to determine the switch on-
time. As the load changes, the error amplifier sources
or sinks current to the CCV output to deliver the
required peak-inductor current. The slope-compensa-
tion signal is added to the current-sense signal to
improve stability at high duty cycles.
At high input voltages when the on-time is pushed to be
lower than the minimum on-time (90ns typ), the boost
converter runs with minimum on-time, boosting the out-
put voltage higher than the input voltage.
5V Supply V CC and UVLO
The MAX17061A requires an external 5V VCC supply
for internal control voltage.
The MAX17061A includes power-on reset (POR) and
undervoltage lockout (UVLO) features. POR resets the
fault latch and sets all the SMBus registers to their POR
values. POR occurs when V CC rises above 2.8V (typ).
The controller is disabled until V CC exceeds the UVLO
threshold of 4.25V (typ). Hysteresis on UVLO is approx-
imately 85mV.
The V CC and V DD pins should be bypassed to GND
with a minimum 1μF ceramic capacitor.
V IN
7V TO 21V
4.7 μ F
0.1 μ F
L1
10 μ H
D1
2 μ F
C OUT
V OUT
UP TO 45V
+5V
V CC
1 μ F
V DD
V CC
OSC
ISET
IN
LX1
LX2
PGND1
464k Ω
5.1k Ω
220pF
FSET
CCV
MAX17061A
PGND2
OV
R1
2.21M Ω
PWM
0.022 μ F
PWMI
R2
61.9k Ω
1 μ F
PWMO
FB1
FB2
FB3
FB4
CLK
SCL
FB5
DATA
SDA
GND
FB6
FB7
FB8
V CC
EP
Figure 1. Typical Operating Circuit
12
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相关PDF资料 |
PDF描述 |
|---|---|
| MAX17061ETI+T | IC LED DRVR WHITE BCKLGT 28-TQFN |
| MAX17105ETG+T | IC LED DRVR WHITE BCKLGT 24-TQFN |
| MAX17127ETP+ | IC WLED DVR SIX STRING 20TQFN |
| MAX17149ETE+ | IC LED DRVR 6CH STEP UP 16QFNEP |
| MAX17410EVKIT+ | KIT EVAL FOR MAX17410 CTLR |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX17061AEVCMAXQU+ | 功能描述:LED 照明开发工具 Evaluation Kit/Evaluation system for MAX17061A 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: |
| MAX17061AEVKIT+ | 功能描述:LED 照明开发工具 MAX17061A 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: |
| MAX17061ETI+ | 功能描述:LED照明驱动器 8-String White LED Driver w/SMBus 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 |
| MAX17061ETI+T | 功能描述:LED照明驱动器 8-String White LED Driver w/SMBus 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 |
| MAX17061EVCMAXQU+ | 功能描述:LED 照明开发工具 Evaluation Kit/Evaluation System for the MAX17061 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: |
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