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| 型号： | MAX17061AETI+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 19/24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
Design Procedure
All MAX17061A designs should be prototyped and test-
ed prior to production. Table 4 provides a list of power
components for the typical applications circuit. Table 5
lists component suppliers.
External component value choice is primarily dictated
by the output voltage and the maximum load current,
as well as maximum and minimum input voltages.
Begin by selecting an inductor value. Once L is known,
choose the diode and capacitors.
where 24.7mV is a scale factor from the slope compen-
sation, the L CCM(MIN) is the minimum inductor value for
stable operation in CCM, and R S =12m Ω (typ) is the
equivalent sensing scale factor from the controller’s
internal current-sense circuit.
The controller can also operate in discontinuous con-
duction mode (DCM). In this mode, the inductor value
can be lower, but the peak inductor current is higher
than in CCM. In DCM, the maximum inductor value is
calculated with the following equation:
LDCM ( MAX ) = ? 1 ?
V OUT ( MAX ) + V DIODE ?
Step-Up Converter Current Calculation
To ensure the stable operation, the MAX17061A
includes slope compensation, which sets the minimum
?
?
V IN ( MIN ) ?
?
inductor value. In continuous-conduction mode (CCM),
the minimum inductor value is calculated with the fol-
lowing equation:
×
V IN ( MIN ) 2 × η
2 × f OSC ( MAX ) × V OUT ( MAX ) × I OUT ( MAX )
( V OUT ( MAX ) + V DIODE IN ( MIN ) ) × R S
L CCM ( MIN ) =
? 2 × V
2 × 24 . 7 mV × f OSC ( MIN )
where the L DCM(MAX) is the maximum inductor value
for DCM, η is the nominal regulator efficiency (85%),
and I OUT(MAX) is the maximum output current.
Table 4. Component List
SWITCHING
FREQUENCY
White LED
Number of WLEDs
Input Voltage
Inductor
Input Capacitors
Output Capacitor
C OUT
Diode Rectifier
1MHz
Nichia NSSW008C
3.2V (typ), 3.5V (max) at 20mA
10 pcs x 4 strings, 25mA (max)
7V to 21V
10μH, 1.2A power inductor
TDK VLP6810T-100M1R2; Sumida CR6D09HPNP-100MC
4.7μF ±10%, 25V X5R ceramic capacitor (1206)
Murata GRM319R61E475KA12D
0.33μF ±10%, 50V X7R ceramic capacitor (1206) (6x)
Murata GRM319R71H334K
TDK C3216JB1H334K
0.7A, 60V Schottky diode (US-flat)
Toshiba CUS04
1MHz
Nichia NSSW008C
3.2V (typ), 3.5V (max) at 20mA
10 pcs x 8 strings, 25mA (max)
7V to 21V
10μH, 2.5A power inductor
TDK SLF10145T-100M2R5-PF
10μF ±10%, 25V X5R ceramic capacitor (1206)
Murata GRM31CR61E106KA
1μF ±10%, 50V X7R ceramic capacitor (1206) (4x)
Murata GRM31MR71H105KA
TDK C3216X7R1H105K
3A, 60V Schottky diode
Nihon EC31QS06
Table 5. Component Suppliers
SUPPLIER
Murata Electronics North America, Inc.
Nichia Corp.
Sumida Corp.
Toshiba America Electronic Components, Inc.
Vishay
PHONE
770-436-1300
248-352-6575
847-545-6700
949-455-2000
203-268-6261
WEBSITE
www.murata-northamerica.com
www.nichia.com
www.sumida.com
www.toshiba.com/taec
www.vishay.com
______________________________________________________________________________________
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相关代理商/技术参数 |
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| 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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