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参数资料
| 型号： | MAX15002ATL+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 14/29页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM 40-TQFNEP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| PWM 型： | 电压模式 |
| 输出数： | 2 |
| 频率 - 最大： | 2.2MHz |
| 电源电压： | 5.5 V ~ 23 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 40-WFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
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MAX15002
Dual-Output Buck Controller with
Tracking/Sequencing
Coincident/Ratiometric
Tracking (SEL, EN/TRACK2)
The enable/tracking input in conjunction with digital
soft-start and soft-stop provides coincident/ratiometric
tracking. See Figure 1. Track an output voltage by con-
necting a resistive divider from the output being
tracked to the enable/tracking input. For example, for
V OUT1
V OUT2
V OUT2 to coincidentally track V OUT1 , connect the same
resistive divider used for FB2, from OUT1 to
SOFT-START
SOFT-STOP
EN/TRACK2 to SGND. See Figure 2 and the Coincident
Startup and Coincident Shutdown graphs in the Typical
Operating Characteristics.
Track ratiometrically by connecting EN/TRACK2 to
SGND. This synchonizes the soft-start and soft-stop of all
the controllers’ references, and hence their respective
output voltages will track ratiometrically. See Figure 2
and the Ratiometric Startup and Ratiometric Shutdown
graphs in the Typical Operating Characteristics.
Connect SEL to REG to configure as a dual tracker.
A) COINCIDENT TRACKING OUTPUTS
V OUT1
V OUT2
When the MAX15002 converter is configured as a
SOFT-START
SOFT-STOP
tracker, the output short-circuit fault situations at master
or slave output is handled carefully so that either the
master or slave output does not stay on when the other
output is shorted to the ground. When the slave is
shorted and enters in hiccup mode, the master will soft-
stop. When the master is shorted and the part enters in
hiccup mode, the slave will ratiometrically soft-stop.
Coming out of the hiccup, all outputs will soft-start coin-
cidently or ratiometrically depending on their initial con-
B) RATIOMETRIC TRACKING OUTPUTS
V OUT1
V OUT2
figuration. See the Typical Operating Characteristics for
the output behavior during the fault conditions. During
the thermal shutdown or power-off, when the input falls
below its UVLO, the output voltages fall down at the
rate depending on the respective output capacitor and
load. See Figure 1.
SOFT-
START
SOFT-STOP
C) SEQUENCED OUTPUTS
Output-Voltage Sequencing
(SEL, EN/TRACK2, PGOOD)
Referring to Figure 1c, when sequencing, the
enable/tracking input must be above 1.24V for each PWM
controller to start. The PGOOD_ outputs and EN/TRACK2
inputs can be daisy-chained to generate power sequenc-
ing. Open-drain PGOOD_ outputs go high impedance
when FB_ is above the PGOOD_ threshold (555mV typ).
14
Figure 1. Graphical Representation of Coincident Tracking,
Ratiometric Tracking, and PGOOD Sequencing
Connect the power-good output to the enable/tracking
input to set when the other controller will start. See
Figure 2. Connect SEL to SGND to configure as a dual
sequencer.
Maxim Integrated
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相关代理商/技术参数 |
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|---|---|
| MAX15003ATM+ | 功能描述:DC/DC 开关控制器 Triple-Out Buck Ctlr w/Track/Sequence 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 |
| MAX15003ATM+T | 功能描述:DC/DC 开关控制器 Triple-Out Buck Ctlr w/Track/Sequence 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 |
| MAX15003EVKIT+ | 功能描述:电源管理IC开发工具 MAX15003 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 |
| MAX15004AAUE/V+ | 功能描述:电流型 PWM 控制器 Flyback/Boost/SEPIC Power-Supply Ctlr 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 |
| MAX15004AAUE/V+T | 功能描述:电流型 PWM 控制器 Flyback/Boost/SEPIC Power-Supply Ctlr 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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