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参数资料
| 型号： | MAX5974EETE+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 12/22页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR FLYBACK PWM 16-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 600kHz |
| 占空比： | 82% |
| 降压： | 无 |
| 升压： | 无 |
| 回扫： | 是 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 16-WFQFN 裸露焊盘 |
| 包装： | 管件 |
MAX5974E/MAX5974F
Current-Mode PWM Controllers for
Low-Cost Flyback Supplies
Pin Description (continued)
12
PIN
6
7
8
9
10
11
12
13
14
15
16
—
NAME
FB
GND
CSSC
CS
PGND
NDRV
AUXDRV
IN
EN
DCLMP
SS
EP
FUNCTION
Transconductance Amplifier Inverting Input
Signal Ground
Current Sense with Slope Compensation Input. A resistor connected from CSSC to CS programs the
amount of slope compensation. See the Programmable Slope Compensation section.
Current-Sense Input. Current-sense connection for average current sense and cycle-by-cycle
current limit. Peak current-limit trip voltage is 400mV.
Power Ground. PGND is the return path for gate-driver switching currents.
n-Channel Main Switch Gate-Driver Output
Output Synchronous Rectifier Gate-Driver Output
Converter Supply Input. IN has wide UVLO hysteresis, enabling the design of efficient power
supplies. See the Enable Input section to determine if an external zener diode is required at IN.
Enable Input. The gate drivers are disabled and the device is in a low-power UVLO mode when the
voltage on EN is below V ENF . When the voltage on EN is above V ENR , the device checks for other
enable conditions. See the Enable Input section for more information about interfacing to EN.
Feed-Forward Maximum Duty-Cycle Clamp Programming Input. Connect a resistive divider between
the input supply voltage DCLMP and GND. The voltage at DCLMP sets the maximum duty cycle
(D MAX ) of the converter inversely proportional to the input supply voltage, so that the MOSFET
remains protected during line transients.
Soft-Start Programming Capacitor Connection. Connect a capacitor from SS to GND to program the
soft-start period. This capacitor also determines hiccup mode current-limit restart time. A resistor
from SS to GND can also be used to set the D MAX below 75%.
Exposed Pad. Internally connected to GND. Connect to a large ground plane to maximize thermal
performance. Not intended as an electrical connection point.
Maxim Integrated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5974EETE+ | 功能描述:电流型 PWM 控制器 Current-Mode PWM Controller RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX5974EETE+T | 功能描述:电流型 PWM 控制器 Current-Mode PWM Controller RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX5974EEVKIT# | 功能描述:电流型 PWM 控制器 MAX5974E Eval Kit RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX5974FETE+ | 功能描述:电流型 PWM 控制器 Current-Mode PWM Controller RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX5974FETE+T | 功能描述:电流型 PWM 控制器 Current-Mode PWM Controller RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
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