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参数资料
| 型号： | MAX16818ETI+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 8/25页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVR PWM CONTROL 28-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 拓扑： | 高端，低端，PWM，SEPIC，降压（降压），升压（升压） |
| 输出数： | 1 |
| 内部驱动器： | 无 |
| 类型 - 主要： | 车载，背光 |
| 类型 - 次要： | 高亮度 LED（HBLED） |
| 频率： | 125kHz ~ 1.5MHz |
| 电源电压： | 4.75 V ~ 5.5 V，7 V ~ 28 V |
| 输出电压： | 5.1V |
| 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（5x5） |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 85°C |
1.5MHz, 30A High-Efficiency, LED Driver
with Rapid LED Current Pulsing
Pin Description (continued)
PIN
21
23
24
26
27
28
—
NAME
CSP
SENSE-
SENSE+
IN
V CC
V DD
EP
FUNCTION
Current-Sense Differential Amplifier Positive Input. The differential voltage between CSN and CSP is
amplified internally by the current-sense amplifier (gain = 34.5) to measure the inductor current.
Differential LED Current-Sensing Negative Input. SENSE- is used to sense the LED current. Connect
SENSE- to the negative side of the LED current-sense resistor.
Differential LED Current-Sensing Positive Input. SENSE+ is used to sense the LED current. Connect
SENSE+ to the positive side of the LED current-sense resistor.
Supply Voltage Connection. Connect IN to V CC for a +5V system.
Internal +5V Regulator Output. V CC is derived from the IN voltage. Bypass V CC to SGND with 4.7μF
and 0.1μF ceramic capacitors.
Supply Voltage for Low-Side and High-Side Drivers. Connect a parallel combination of 0.1μF and 1μF
ceramic capacitors to PGND and a 1 ? resistor to V CC to filter out the high peak currents of the driver
from internal circuitry.
Exposed Paddle. Connect the exposed paddle to a copper pad (SGND) to improve power
dissipation.
8
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