- 您现在的位置：买卖IC网 > PDF目录1849 > MAX8792ETD+T (Maxim Integrated Products)IC PWM CTRLR STEP-DWN 14TDFN PDF资料下载
参数资料
| 型号： | MAX8792ETD+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 18/28页 |
| 文件大小： | 0K |
| 描述： | IC PWM CTRLR STEP-DWN 14TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 应用： | PWM 控制器 |
| 输入电压： | 2 V ~ 26 V |
| 电源电压： | 4.5 V ~ 5.5 V |
| 电流 - 电源： | 700µA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-WFDFN 裸露焊盘 |
| 供应商设备封装： | 14-TDFN-EP（3x3） |
| 包装： | 标准包装 |
| 其它名称： | MAX8792ETD+TDKR |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页当前第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页
Single Quick-PWM Step-Down
Controller with Dynamic REFIN
POWER-GOOD AND FAULT PROTECTION
TARGET
-200mV
TARGET
+300mV
FB
EN
SOFT-START
OVP
COMPLETE
ONE-
SHOT
200 μ s
IN
OUT
UVP
FAULT
LATCH
OVP ENABLED
FAULT
POWER-GOOD
CLK
Figure 5. Power-Good and Fault Protection
voltage, connect an external pullup resistor between
PGOOD and V DD . A 100k Ω pullup resistor works well in
most applications. Figure 5 shows the power-good and
fault-protection circuitry.
Overvoltage Protection (OVP)
When the internal feedback voltage rises 300mV above
the target voltage and OVP is enabled, the OVP compara-
tor immediately pulls DH low and forces DL high, pulls
PGOOD low, sets the fault latch, and disables the SMPS
controller. Toggle EN or cycle V CC power below the V CC
POR to clear the fault latch and restart the controller.
Undervoltage Protection (UVP)
When the feedback voltage drops 200mV below the
target voltage (REFIN), the controller immediately pulls
PGOOD low and triggers a 200μs one-shot timer. If the
feedback voltage remains below the undervoltage fault
threshold for the entire 200μs, then the undervoltage
fault latch is set and the SMPS begins the shutdown
sequence. When the internal target voltage drops
below 0.1V, the MAX8792 forces DL low. Toggle EN or
cycle V CC power below V CC POR to clear the fault latch
and restart the controller.
Thermal-Fault Protection (TSHDN)
The MAX8792 features a thermal fault-protection circuit.
When the junction temperature rises above +160°C, a
thermal sensor activates the fault latch, pulls PGOOD
low, and shuts down the controller. Both DL and DH are
pulled low. Toggle EN or cycle V CC power below V CC
POR to reactivate the controller after the junction tem-
perature cools by 15°C.
MOSFET Gate Drivers
The DH and DL drivers are optimized for driving mode-
rate-sized high-side and larger low-side power
MOSFETs. This is consistent with the low duty factor
seen in notebook applications, where a large V IN -
V OUT differential exists. The high-side gate driver (DH)
sources and sinks 1.5A, and the low-side gate driver
(DL) sources 1.0A and sinks 2.4A. This ensures robust
gate drive for high-current applications. The DH high-
side MOSFET driver is powered by the internal boost
switch charge pump from BST to LX, while the DL syn-
chronous-rectifier driver is powered directly by the 5V
bias supply (V DD ).
18
______________________________________________________________________________________
相关PDF资料 |
PDF描述 |
|---|---|
| MAX8794ETB+T | IC DDR LINEAR REG 10-TDFN |
| MAX8795AETJ+C7P | IC TFT-LCD DC/DC CONV 32-TQFN |
| MAX8798ETX+T | IC INTERNAL-SW BOOST REG 36-TQFN |
| MAX8804VETA+T | IC USB/AC ADP CHARGER 8TDFN-EP |
| MAX8804YETA+T | IC USB/AC ADP CHARGER 8-TDFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8792EVKIT+ | 功能描述:电源管理IC开发工具 MAX8792 Eval Kit RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| MAX8794ETB/V+T | 功能描述:低压差稳压器 - LDO Low-Voltage DDR Linear Regulator RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX8794ETB+ | 制造商:Maxim Integrated Products 功能描述: 制造商:Maxim Integrated Products 功能描述:LOW-VOLTAGE DDR LINEAR REGULATOR - Rail/Tube |
| MAX8794ETB+T | 功能描述:低压差稳压器 - LDO Low-Voltage DDR Linear Regulator RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX8795AETJ+ | 功能描述:直流/直流开关转换器 TFT-LCD DC/DC Converter 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 |
发布紧急采购，3分钟左右您将得到回复。