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| 型号： | MAX17003ETJ+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 14/36页 |
| 文件大小： | 0K |
| 描述： | IC PS CTRLR FOR NOTEBOOKS 32TQFN |
| 标准包装： | 60 |
| 应用： | 控制器，笔记本电脑电源系统 |
| 输入电压： | 6 V ~ 26 V |
| 输出数： | 4 |
| 输出电压： | 3.3V，5V，2 V ~ 5.5 V |
| 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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High-Efficiency, Quad-Output, Main Power-
Supply Controllers for Notebook Computers
Pin Description (continued)
R DIS 3 ≥ ? R DSCHG 3 ( MIN )
PIN
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
NAME
BST5
DH5
LX5
DL5
PGND
LDO5
IN
PGDALL
DL3
LX3
DH3
BST3
DSCHG3
CSL3
CSH3
FB3
FUNCTION
Boost Flying Capacitor Connection for the 5V SMPS. The MAX17003/MAX17004 include an internal boost
switch connected between LDO5 and BST5. Connect to an external capacitor as shown in Figure 1.
High-Side Gate-Driver Output for the 5V SMPS. DH5 swings from LX5 to BST5.
Inductor Connection for the 5V SMPS. Connect LX5 to the switched side of the inductor. LX5 serves as the
lower supply rail for the DH5 high-side gate driver.
Low-Side Gate-Driver Output for the 5V SMPS. DL5 swings from PGND to LDO5.
Power Ground
5V Internal Linear-Regulator Output. Bypass with 4.7μF minimum (1μF/25mA). Provides at least 100mA for
the DL_ low-side gate drivers, the DH_ high-side drivers through the BST switches, the PWM controller,
logic, reference, and external loads. If CSL5 is greater than 4.5V and soft-start is complete, the linear
regulator shuts down, and LDO5 connects to CSL5 through a 1 Ω switch rated for loads up to 200mA.
Input of the Startup Circuitry and the LDO5 Internal 5V Linear Regulator. Bypass to PGND with a 0.22μF or
greater ceramic capacitor close to the IC.
Open-Drain Power-Good Output for SMPS3 and SMPS5. PGDALL is pulled low if either SMPS3 or SMPS5
output drops more than 10% (typ) below the normal regulation point, or if either ON3 or ON5 are low.
PGDALL becomes high impedance when both SMPS3 and SMPS5 are in regulation.
Low-Side Gate-Driver Output for the 3.3V SMPS. DL3 swings from PGND to LDO5.
Inductor Connection for the 3.3V SMPS. Connect LX3 to the switched side of the inductor. LX3 serves as the
lower supply rail for the DH3 high-side gate driver.
High-Side Gate-Driver Output for the 3.3V SMPS. DH3 swings from LX3 to BST3.
Boost Flying Capacitor Connection for the 3.3V SMPS. The MAX17003/MAX17004 include an internal boost
switch connected between LDO5 and BST3. Connect to an external capacitor as shown in Figure 1.
Open-Drain Discharge Output for the 3.3V SMPS. DSCHG3 is pulled low when ON3 is low, discharging the
SMPS3 output. DSCHG3 is also low under fault conditions.
Connect a resistor from DSCHG3 to the SMPS3 output. Limit the peak discharge current to less than 100mA:
V OUT 3
100 mA
where R DSCHG3(MIN) is 5 Ω , taken from the Electrical Characteristics .
Output Sense and Negative Current Sense for the 3.3V SMPS. When using the internal preset 3.3V feedback
divider (FB3 = LDO5), the controller uses CSL3 to sense the output voltage. Connect to the negative
terminal of the current-sense element.
Positive Current-Sense Input for the 3.3V SMPS. Connect to the positive terminal of the current-sense
element. Figure 7 describes two different current-sensing options—using accurate sense resistors or
lossless inductor DCR sensing.
Feedback Input for the 3.3V SMPS. Connect to LDO5 for fixed 3.3V output. In adjustable mode, FB3
regulates to 2V.
14
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX17003ETJ+ | 功能描述:电压模式 PWM 控制器 Quad Out Main Power Supply Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX17003ETJ+T | 功能描述:电压模式 PWM 控制器 Quad Out Main Power Supply Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX17004AETJ+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX17004ETJ+ | 功能描述:电压模式 PWM 控制器 Quad Out Main Power Supply Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX17004ETJ+T | 功能描述:电压模式 PWM 控制器 Quad Out Main Power Supply Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
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