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参数资料
| 型号： | MAX1637EEE+T |
| 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 16-QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| PWM 型： | 电流模式，混合 |
| 输出数： | 1 |
| 频率 - 最大： | 338kHz |
| 占空比： | 96% |
| 电源电压： | 3.15 V ~ 5.5 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： | 16-SSOP（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
Miniature, Low-Voltage,
Precision Step-Down Controller
20 Ω
4.7 μ F
V BIAS 3.15V TO 5.5V
TANTALUM
1 μ F
V CC
SYNC
SKIP
V GG
BST
CMPSH-3
0.1 μ F
220 μ F
OS-CON
MAX1637 DH
LX
IRF7401
10 μ H
20m Ω
1%
OUTPUT = 2.5V AT 4A
CDHR125-100
ON/OFF
SHDN
DL
PGND
IRF7401
MBRS130
130k
1%
470 μ F
LOW ESR
TANTALUM
CSH
REF
CSL
1 μ F
GND
CC
FB
470pF
100k
1%
Figure 7. 3.15V to 5.5V Single-Supply Application Circuit
sensing at the supply’s output terminals without interfer-
ence from IR drops and ground noise. Other high-cur-
rent paths should also be minimized, but focusing
primarily on short ground and current-sense connec-
tions eliminates about 90% of all PC board layout prob-
lems (see the PC board layouts in the MAX1637
evaluation kit manual for examples).
2) Place the IC and signal components. Keep the main
switching nodes (LX nodes) away from sensitive
analog components (current-sense traces and REF
capacitor). Place the IC and analog components on
the opposite side of the board from the power-
switching node. Important : The IC must be no fur-
ther than 10mm from the current-sense resistors.
Keep the gate-drive traces (DH, DL, and BST) short-
er than 20mm and route them away from CSH, CSL,
and REF. Place ceramic bypass capacitors close to
the IC. The bulk capacitors can be placed further
away.
3) Use a single-point star ground where the input
ground trace, power ground (subground plane), and
normal ground plane meet at the supply's output
ground terminal. Connect both IC ground pins and
all IC bypass capacitors to the normal ground plane.
HIGH-CURRENT PATH
SENSE RESISTOR
MAX1637
Figure 8. Kelvin Connections for the Current-Sense Resistors
___________________Chip Information
TRANSISTOR COUNT: 2164
______________________________________________________________________________________
19
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1637EVKIT | 制造商:Maxim Integrated Products 功能描述:MINIATURE, LOW-VOLTAGE, PRECISION STEP-DOWN C - Bulk |
| MAX1638BEAG | 制造商:MAX 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX1638EAG | 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 |
| MAX1638EAG+ | 功能描述:DC/DC 开关控制器 High Speed Step Down 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 |
| MAX1638EAG+T | 功能描述:DC/DC 开关控制器 High Speed Step Down 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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