参数资料
型号: MAX1954EUB+
厂商: Maxim Integrated Products
文件页数: 8/22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: 360kHz
占空比: 96%
电源电压: 3 V ~ 5.5 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
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
Low-Cost, High-Frequency, Current-Mode PWM
Buck Controller
Pin Description
MAX1953
PIN
MAX1954
MAX1957
NAME
FUNCTION
ILIM Sets the Current-Limit Threshold for the Low-Side N-Channel
1
ILIM
MOSFET, as well as the Current-Sense Amplifier Gain. Connect to IN
for 320mV, leave floating for 210mV, or connect to GND for 105mV
current-limit threshold.
HSD Senses the Voltage at the Drain of the High-Side N-Channel
1
HSD
MOSFET. Connect to the high-side MOSFET drain using a Kelvin
connection.
REFIN Sets the FB Regulation Voltage. Drive REFIN with the desired
1
REFIN
FB regulation voltage using an external resistor-divider. Bypass to
GND with a 0.1μF capacitor.
2
3
2
3
2
3
COMP
FB
Compensation and Shutdown Control Pin. Connect an RC network to
compensate control loop. Drive to GND to shut down the IC.
Feedback Input. Regulates at V FB = 0.8V (MAX1953/MAX1954) or
REFIN (MAX1957). Connect FB to a resistor-divider to set the output
voltage (MAX1953/MAX1954). Connect to output through a decoupling
resistor (MAX1957).
4
4
4
GND
Ground
Input Voltage (3V to 5.5V). Provides power for the IC. For the
MAX1953/MAX1957, IN serves as the current-sense input for the high-
side MOSFET. Connect to the drain of the high-side MOSFET
5
5
5
IN
(MAX1953/MAX1957). Bypass IN to GND close to the IC with a
0.22μF (MAX1954) capacitor. Bypass IN to GND close to the IC with
10μF and 4.7μF in parallel (MAX1953/MAX1957) capacitors. Use
ceramic capacitors.
6
7
8
6
7
8
6
7
8
DL
PGND
DH
Low-Side Gate-Drive Output. Drives the synchronous-rectifier MOSFET.
Swings from PGND to V IN .
Power Ground. Connect to source of the synchronous rectifier close to
the IC.
High-Side Gate-Drive Output. Drives the high-side MOSFET. DH is a
floating driver output that swings from V LX to V BST .
Master Controller Current-Sense Input. Connect LX to the junction of
9
9
9
LX
the MOSFETs and inductor. LX is the reference point for the current
limit.
10
10
10
BST
Boost Capacitor Connection for High-Side Gate Driver. Connect a
0.1μF ceramic capacitor from BST to LX and a Schottky diode to IN.
8
_______________________________________________________________________________________
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相关代理商/技术参数
参数描述
MAX1954EUB+ 功能描述:电流型 PWM 控制器 High-f Current-Mode PWM Buck Controller 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
MAX1954EUB+T 功能描述:电流型 PWM 控制器 High-f Current-Mode PWM Buck Controller 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
MAX1954EUB-T 功能描述:电流型 PWM 控制器 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
MAX1954EVKIT 功能描述:电流型 PWM 控制器 Low-Cost High-Frequency Current-Mode PWM Buck Controller 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
MAX1955ETI 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