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参数资料
| 型号： | MAX1904EAI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/33页 |
| 文件大小： | 0K |
| 描述： | IC CNTRLR PWR SPLY LN 28-SSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,000 |
| 应用： | 控制器，笔记本电脑电源系统 |
| 输入电压： | 4.2 V ~ 30 V |
| 输出数： | 4 |
| 输出电压： | 2.5 V ~ 5 V |
| 工作温度： | 0°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 28-SSOP |
| 包装： | 带卷 (TR) |
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500kHz Multi-Output, Low-Noise Power-Supply
Controllers for Notebook Computers
Pin Description (continued)
QSOP
PIN
QFN
NAME
FUNCTION
Pin-strap input that selects the SMPS power-up sequence:
SEQ = GND: 5V before 3.3V, RESET output determined by both outputs
15
13
SEQ
SEQ = REF: Separate ON3/ON5 controls, RESET output determined by 3.3V
output
SEQ = V L : 3.3V before 5V, RESET output determined by both outputs
16
17
18
19
20
14
15
17
18
19
DH5
LX5
BST5
DL5
PGND
Gate-Drive Output for the 5V, High-Side N-Channel Switch. DH5 is a floating driver
output that swings from LX5 to BST5, riding on the LX5 switching node voltage.
Switching-Node (Inductor) Connection. Can swing 2V below ground without hazard.
Boost Capacitor Connection for High-Side Gate Drive (0.1μF)
Gate-Drive Output for the Low-Side Synchronous-Rectifier MOSFET. Swings 0 to V L .
Power Ground
5V Internal Linear-Regulator Output. V L is also the supply-voltage rail for the chip.
21
20
VL
After the 5V SMPS output has reached 4.5V (typ), V L automatically switches to the
output voltage through CSL5 for bootstrapping. Bypass to GND with 4.7μF. V L
supplies up to 25mA for external loads.
22
21
V+
Battery Voltage Input, 4.2V to 30V. Bypass V+ to PGND close to the IC with a 0.22μF
capacitor. Connects to a linear regulator that powers V L .
Shutdown Control Input, Active Low. Logic threshold is set at approximately 1V. For
23
22
SHDN
automatic startup, connect SHDN to V+ through a 220k ? resistor and bypass SHDN to
GND with a 0.01μF capacitor.
24
25
26
27
28
—
23
24
26
27
28
6, 16, 25, 32
DL3
BST3
LX3
DH3
RUN/ON3
N.C.
Gate-Drive Output for the Low-Side Synchronous-Rectifier MOSFET. Swings 0 to VL.
Boost Capacitor Connection for High-Side Gate Drive (0.1μF)
Switching-Node (Inductor) Connection. Can swing 2V below ground without hazard.
Gate-Drive Output for the 3.3V, High-Side N-Channel Switch. DH3 is a floating driver
output that swings from LX3 to BST3, riding on the LX3 switching-node voltage.
ON/ OFF Control Input. See the Power-Up Sequencing and ON/ OFF Controls section.
No Connection
10
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1904EAI-TG074 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX1904ETJ | 功能描述:DC/DC 开关控制器 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 |
| MAX1904ETJ+ | 功能描述:DC/DC 开关控制器 500kHz Multi-Output Power-Supply Ctlr 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 |
| MAX1904ETJ+T | 功能描述:DC/DC 开关控制器 500kHz Multi-Output Power-Supply Ctlr 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 |
| MAX1904ETJ-T | 功能描述:DC/DC 开关控制器 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 |
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