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参数资料
| 型号： | MAX1599ETA |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 显示驱动器 |
| 英文描述： | High-Efficiency, 26V Step-Up Converters for Two to Six White LEDs |
| 中文描述： | LED DISPLAY DRIVER, PDSO8 |
| 封装： | 3 X 3 MM, 0.80 MM HEIGHT, MO-229WEEC, TDFN-16 |
| 文件页数： | 8/10页 |
| 文件大小： | 245K |
| 代理商： | MAX1599ETA |
M
input and output ripple, but at the expense of size and
higher cost. C
COMP
stabilizes the converter and con-
trols soft-start. Connect a 0.1μF capacitor from COMP
to GND. For stable operation, C
OUT
must not exceed
10 times C
COMP
.
Inductor Selection
Inductor values range from 10μH to 47μH. A 22μH
(47μH for the MAX1599) inductor optimizes the efficien-
cy for most applications while maintaining low 15mV
P-P
input ripple. With input voltages near 5V, a larger value
of inductance can be more efficient. To prevent core
saturation, ensure that the inductor-saturation current
rating exceeds the peak inductor current for the appli-
cation. Calculate the peak inductor current with the fol-
lowing formula:
Schottky Diode Selection
The MAX1561/MAX1599s
’
high switching frequency
demands a high-speed rectification diode (D1) for opti-
mum efficiency. A Schottky diode is recommended due
to its fast recovery time and low forward-voltage drop.
Ensure that the diode
’
s average and peak current rating
exceed the average output current and peak inductor
current. In addition, the diode
’
s reverse breakdown volt-
age must exceed V
OUT
. The RMS diode current can be
calculated from:
Applications Information
PC Board Layout
Due to fast switching waveforms and high-current
paths, careful PC board layout is required. An evalua-
tion kit (MAX1561EVKIT) is available to speed design.
Order MAX1599 samples separately.
When laying out a board, minimize trace lengths between
the IC and R
SENSE
, the inductor, the diode, the input
capacitor, and the output capacitor. Keep traces short,
direct, and wide. Keep noisy traces, such as the LX node
trace, away from CS. The IN bypass capacitor (C
IN
)
should be placed as close to the IC as possible. PGND
and GND should be connected directly to the exposed
paddle underneath the IC. The ground connections of
C
IN
and C
OUT
should be as close together as possible.
The traces from IN to the inductor and from the Schottky
diode to the LEDs may be longer.
Chip Information
TRANSISTOR COUNT: 2895
PROCESS: BiCMOS
I
I
I
DIODE RMS
OUT
PEAK
(
)
×
I
V
I
V
V
s
L
PEAK
OUT MAX
(
0 8
LED MAX
(
IN MIN
(
IN MIN
(
=
×
×
+
×
μ
×
)
)
)
)
.
.
0 8
2
High-Efficiency, 26V Step-Up Converters
for Two to Six White LEDs
8
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1599ETA+ | 制造商:Maxim Integrated Products 功能描述:LED DRVR 6SEGMENT 3.3V/5V 8TDFN EP - Rail/Tube |
| MAX1599ETA+T | 功能描述:LED照明驱动器 26V Step-Up for 2-6 White LEDs 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 |
| MAX1599ETA-T | 功能描述:LED照明驱动器 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 |
| MAX159ACPA | 功能描述:模数转换器 - ADC Integrated Circuits (ICs) 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 |
| MAX159ACPA+ | 功能描述:模数转换器 - ADC 10-Bit 108ksps 5.25V Precision 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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