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| 型号： | MAX15049ETJ+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 18/31页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR PWM STP-DN TRIPL 32WQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 应用： | 电源控制器，序列发生器 |
| 电源电压： | 4.7 V ~ 23 V |
| 电流 - 电源： | 6mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-WFQFN 裸露焊盘 |
| 供应商设备封装： | 32-TQFN-EP（5x5） |
| 包装： | 管件 |
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MAX15048/MAX15049
Triple-Output Buck Controllers
with Tracking/Sequencing
MAX15049 Output-Voltage
Sequencing (EN_)
In Figure 1c, when sequencing, the enable input must be
above 0.6V for each PWM controller to start. The V OUT_
outputs and EN_ inputs can be daisy-chained to gener-
ate power sequencing. See Figure 2 and the Typical
Operating Characteristics (V OUT_ to EN_ Sequencing).
Alternately, connect a resistive voltage-divider from the
voltage to be sequenced from the enable input to SGND
to set when each controller should start.
Error Amplifier
The output of the internal transconductance error ampli-
fier (COMP_) is provided for frequency compensation
(see the Compensation Design Guidelines section). FB_
is the inverting input and COMP_ is the output of the error
amplifier. The error transamplifier has an 80dB open-
loop gain and a 10MHz GBW product. See the Typical
Operating Characteristics for a plot of gain and phase
vs. frequency.
Output Short-Circuit
Protection (Hiccup Mode)
The current-limit circuit employs a valley current-limiting
algorithm that uses the synchronous MOSFET’s on-
resistance as the current-sensing element. The current-
limit threshold is internally set at 69mV (typ). Once the
high-side MOSFET turns off, the voltage across the
current-sensing element is monitored. If this voltage
does not exceed the current-limit threshold, the high-
side MOSFET turns on normally at the start of the next
cycle. If the voltage exceeds the current-limit threshold
V IN
EN1
RATIOMETRIC
TRACKING
EN2
V OUT1
V IN
EN1
COINCIDENT
TRACKING
V IN
EN1
SEQUENCING
EN3
V OUT2
EN2
FB2
R A
R B
V OUT3
R A
R B
EN3
FB3
R C
R D
R C
R D
V OUT1
V OUT2
EN2
EN3
MAX15048
MAX15048
MAX15049
Figure 2. Ratiometric Tracking, Coincident Tracking (MAX15048), and Sequencing (MAX15049) Configurations
18
Maxim Integrated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX15049ETJ+ | 功能描述:DC/DC 开关控制器 1.2MHz Triple Buck w/Tracking RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX15049ETJ+ | 制造商:Maxim Integrated Products 功能描述:IC BUCK CNTRL TRIPLE 32WQFN 制造商:Maxim Integrated Products 功能描述:IC, BUCK, CNTRL, TRIPLE, 32WQFN |
| MAX15049ETJ+ | 制造商:Maxim Integrated Products 功能描述:IC PWM STEP-DOWN DC/DC CONVER |
| MAX15049ETJ+T | 功能描述:DC/DC 开关控制器 1.2MHz Triple Buck w/Tracking RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX15049EVKIT+ | 功能描述:电源管理IC开发工具 MAX15049 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 |
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