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参数资料
| 型号： | MAX1791EUB+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 19/20页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 10-UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 300kHz |
| 电源电压： | 5 V ~ 20 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 ~ 85°C |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 包装： | 管件 |
| 产品目录页面： | 1410 (CN2011-ZH PDF) |
High-Efficiency, 10-Pin μMAX, Step-Down
Controllers for Notebooks
USE AGND PLANE TO:
- BYPASS V CC AND REF
- TERMINATE EXTERNAL FB
DIVIDER (IF USED)
- PIN-STRAP CONTROL
USE PGND PLANE TO:
- BYPASS V VP
- CONNECT PGND TO THE TOPSIDE STAR GROUND
INPUTS
AGND
PGND
VIA TO GROUND
VL
VBATT
P1
N1
L1
D1
C1
C2
VOUT
GND
CONNECT PGND TO AGND
BENEATH THE MAX1762/MAX1791 AT
ONE POINT ONLY AS SHOWN.
NOTE : EXAMPLE SHOWN IS FOR DUAL n-CHANNEL MOSFET.
Figure 10. PC Board Layout Example
Layout Procedure
1) Place the power components first, with ground ter-
minals adjacent (Q1 source, C IN , C OUT ). If possi-
ble, make all these connections on the top layer
with wide, copper-filled areas.
2) Mount the controller IC adjacent to the synchro-
nous-rectifier MOSFETs, preferably on the back
side in order to keep CS, GND, and the DL gate
drive lines short and wide. The DL gate trace must
be short and wide (measuring 50mils to 100mils
wide if the MOSFET is 1in from the controller IC).
3) Place the V L bypass capacitor near the controller
sides. The top-side star ground is a star connection
of the input capacitors, side 1 low-side MOSFET.
Keep the resistance low between the star ground
and the source of the low-side MOSFETs for accu-
rate current limit. Connect the top-side star ground
(used for MOSFET, input, and output capacitors) to
the small island with a single short, wide connection
(preferably just a via).
6) Connect the output power planes directly to the out-
put filter capacitor positive and negative terminals
with multiple vias.
IC.
4) Make the DC-DC controller ground connections as
follows: Near the IC, create a small analog ground
plane. Connect this plane to GND, and use this
plane for the ground connection for the REF and
V VP bypass capacitors and FB dividers.
5) On the board’s top side (power planes), make a
star ground to minimize crosstalk between the two
TRANSISTOR COUNT: 3520
PROCESS: S8E1FP
Chip Information
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1791EUB+ | 功能描述:DC/DC 开关控制器 Step-Down for Notebook 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 |
| MAX1791EUB+ | 制造商:Maxim Integrated Products 功能描述:CONTROLLER ((NW)) |
| MAX1791EUB+T | 功能描述:DC/DC 开关控制器 Step-Down for Notebook 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 |
| MAX1791EUB-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 |
| MAX1791EVKIT | 功能描述:DC/DC 开关控制器 Evaluation Kit for the MAX1791 MAX1762 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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