参数资料
型号: MAX797HESE+T
厂商: Maxim Integrated Products
文件页数: 7/8页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM 16-SOIC
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
PWM 型: 混合物
输出数: 1
频率 - 最大: 330kHz
占空比: 96%
电源电压: 4.5 V ~ 40 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 85°C
封装/外壳: 16-SOIC(0.154",3.90mm 宽)
包装: 带卷 (TR)
High-Voltage, Step-Down Controller with
Synchronous Rectifier for CPU Power
+5V
REGULATED
SUPPLY
V+
SHDN
MAX797H
VL
DH
+4V TO +40V
POWER INPUT
+3.3V
BST
OUTPUT
SS
REF
SYNC
GND
SKIP
LX
DL
PGND
CSH
CSL
FB
Figure 1. Powering V+ and VL from a Regulated +5V supply
Similarly, at 150kHz, the minimum duty factor is
0.425μs / 6.67μs = 0.064. This means that duty factor is
not an issue except at the maximum input voltage and
minimum output voltage. For example, if V IN is 40V,
the lowest V OUT that does not require less than the
minimum duty factor is 40V x 0.064 = 2.56V. If V OUT /
V IN is less than this value, the IC will properly regulate
the output voltage, but may extend the period and
switch at 75kHz instead of 150kHz. It may also alter -
nate between these two frequencies.
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MAX798ESE+ 功能描述:直流/直流开关转换器 Step-Down Controller for CPU Power RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT