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参数资料
| 型号： | MAX17499BEUB+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 15/18页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BST ISO PWM 10-UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 625kHz |
| 占空比： | 75% |
| 电源电压： | 9.5 V ~ 24 V |
| 降压： | 无 |
| 升压： | 是 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 是 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 包装： | 带卷 (TR) |
Current-Mode PWM Controllers with
Programmable Switching Frequency
12V
UFLG
R2
L1
D1
15V
R5
IN
NDRV
Q1
C3
V CC
MAX17499
CS
C4
C1
C2
COMP
GND
R1
0V
Figure 8. 12V to 15V Output Boost Regulator
FB
R12
RT
C6
UVLO/EN
R15
R3
R6
Figure 8 shows the 12V to 15V output boost regulator.
Layout Recommendations
Typically, there are two sources of noise emission in a
switching power supply: high di/dt loops and high
dV/dt surfaces. For example, traces that carry the drain
current often form high di/dt loops. Similarly, the
heatsink of the MOSFET presents a dV/dt source; there-
fore, minimize the surface area of the heatsink as much
as possible. Keep all PCB traces carrying switching
currents as short as possible to minimize current loops.
Use a ground plane for best results. The pins of the
μMAX package are positioned to allow easy interfacing
to the external MOSFET.
For universal AC input design, follow all applicable
safety regulations. Offline power supplies may require
UL, VDE, and other similar agency approvals. To avoid
noise coupling of signals from RT to NDRV, route traces
from RT away from NDRV.
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