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参数资料
| 型号： | MAX15002ATL+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 27/29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
PWM Controller
Applications Information
Power Dissipation
The 40-pin TQFN thermally enhanced package can dis-
sipate up to 2.96W. Calculate power dissipation in the
MAX15002 as a product of the input voltage and the
total REG output current (I REG ). I REG includes quies-
cent current (I Q ) and the total gate drive current
(I DREG_ ):
P D = V IN x I REG
I REG = I Q + [f SW x (Q G1 + Q G2 + Q G3 + Q G4 )]
where Q G1 to Q G4 are the total gate charge of the low-
side and high-side external MOSFETs. f SW is the
switching frequency of the converter and I Q is the qui-
escent current of the device at the switching frequency.
Use the following equation to calculate the maximum
power dissipation (P DMAX ) in the chip at a given ambi-
ent temperature (T A ):
P DMAX = 37 x (150 - T A )……….mW
PCB Layout Guidelines
Use the following guidelines to layout the switching
voltage regulator.
1) Place the IN, REG, and DREG_ bypass capacitors
close to the MAX15002.
2) Minimize the area and length of the high-current
loops from the input capacitor, upper switching
MOSFET, inductor, and output capacitor back to
the input capacitor negative terminal.
Maxim Integrated
3) Keep the current loop formed by the lower switch-
ing MOSFET, inductor and output capacitor short.
4) Keep SGND and PGND isolated and connect them
at one single point close to the negative terminal of
the input filter capacitor.
5) Run the current-sense lines CSP_ and CSN_ close
to each other to minimize the loop area.
6) Avoid long traces between the REG/DREG_ bypass
capacitors, driver output of the MAX15002, MOS-
FET gates, and PGND. Minimize the loop formed
by the DREG_ bypass capacitors, bootstrap diode,
bootstrap capacitor, high-side driver output of the
MAX15002, and upper MOSFET gates.
7) Place the bank of output capacitors close to the
load.
8) Distribute the power components evenly across the
board for proper heat dissipation.
9) Provide enough copper area at and around the
switching MOSFETs, and inductor to aid in thermal
dissipation.
10) Connect the MAX15002 exposed pad to a large
copper plane to maximize its power dissipation
capability. Connect the exposed pad to SGND. Do
not connect the exposed pad to the SGND pin (pin
35) directly underneath the IC.
11) Use 2oz copper to keep the trace inductance and
resistance to a minimum. Thin copper PCBs com-
promise efficiency because high currents are
involved in the application. Also, thicker copper
conducts heat more effectively, thereby reducing
thermal impedance.
27
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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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