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参数资料
| 型号： | MAX1980ETP+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/33页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM 20-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 60 |
| 系列： | Quick-PWM™ |
| PWM 型： | 控制器 |
| 输出数： | 1 |
| 频率 - 最大： | 550kHz |
| 占空比： | 50% |
| 电源电压： | 4.5 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： | 0°C ~ 85°C |
| 封装/外壳： | 20-WQFN 裸露焊盘 |
| 包装： | 管件 |
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Quick-PWM Slave Controller with
Driver Disable for Multiphase DC-DC Converter
Pin Description
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
NAME
CM+
CM-
TON
CS-
CS+
COMP
POL
GND
PGND
DL
V DD
V CC
DD
DH
LX
BST
DESCRIPTION
Master Controller ’ s Positive Current-Sense Input
Master Controller ’ s Negative Current-Sense Input
On-Time Selection Control Input. This is a three-level input used to determine the DH on time (see the
On-Time Control and Active Current Balancing section). Connect TON as follows for the indicated
switching frequencies:
GND = 550kHz
floating = 300kHz
V CC = 200kHz.
The slave controller ’ s switching frequency should be selected to closely match the frequency of the master
PWM controller.
Slave Controller ’ s Negative Current-Sense Input
Slave Controller ’ s Positive Current-Sense Input
Current Balance Compensation. Connect a series resistor and capacitor between COMP and OUT. See
the Current Balance Compensation section.
TRIG Polarity Select Input. Connect POL to V CC or float to trigger on the rising edge of TRIG (out-of-phase
operation). Connect POL to GND to trigger on the falling edge of TRIG (in-phase operation).
Analog Ground. Connect the QFN ’ s exposed pad to analog ground.
Power Ground
Low-Side Gate-Driver Output. DL swings from PGND to V DD . DL is forced low when the MAX1980 enters
standby mode or the drivers are disabled ( DD = low).
Supply Voltage Input for the DL Gate Driver. Connect to the system supply voltage (4.5V to 5.5V).
Bypass to PGND with a 1μF or greater ceramic capacitor, as close to the IC as possible.
Analog Supply Voltage Input for PWM Core. Connect V CC to the system supply voltage (4.5V to 5.5V)
through a series 10 ? resistor. Bypass to GND with a 0.22μF or greater ceramic capacitor, as close to
the IC as possible.
Driver Disable Input. A logic low disables the MAX1980 slave controller by forcing DL and DH low. This
reduces the number of phases, allowing single-phase operation for low-power states. Connect to V CC
for normal operation.
High-Side Gate-Driver Output. DH swings from LX to BST.
Inductor Connection. Connect LX to the switched side of the inductor. LX serves as the lower supply rail
for the DH high-side gate driver.
Boost Flying-Capacitor Connection. Connect to an external capacitor and diode according to the
Standard Application Circuit (Figure 1). An optional resistor in series with BST allows DH pullup current
to be adjusted.
10
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1980ETP+ | 功能描述:DC/DC 开关控制器 PWM Slave Controller w/Driver Disable 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 |
| MAX1980ETP+T | 功能描述:DC/DC 开关控制器 PWM Slave Controller w/Driver Disable 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 |
| MAX1980ETP+TG075 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX1980ETP-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 |
| MAX1980ETP-TG075 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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