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参数资料
| 型号： | MAX1962 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | 2.35V to 5.5V, 0.5% Accurate, 1MHz PWM Step-Down Controllers with Voltage Margining |
| 中文描述： | 2.35V至5.5V、0.5%精度、1MHz PWM降压型控制器，带有电压裕量控制 |
| 文件页数： | 1/29页 |
| 文件大小： | 455K |
| 代理商： | MAX1962 |
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General Description
The MAX1960/MAX1961/MAX1962 high-current, high-
efficiency voltage-mode step-down DC-DC controllers
operate from a 2.35V to 5.5V input and generate output
voltages down to 0.8V at up to 20A. An on-chip charge
pump generates a regulated 5V for MOSFET drive.
Additionally, adaptive dead-time drivers allow a
wide variety of MOSFETs to be used without risking
shoot-through.
Fixed-frequency PWM operation and external synchro-
nization make these controllers suitable for telecom
and datacom applications. The operating frequency is
programmable to either 500kHz or 1MHz, or from
450kHz to 1.2MHz with an external clock. A clock output
is provided to synchronize another converter for 180°
out-of-phase operation. A high closed-loop bandwidth
provides excellent transient response for applications
with dynamic loads.
Lossless current sensing in the MAX1960 and
MAX1961 is achieved by monitoring the drain-to-source
voltage of the low-side external FET. The current limit is
scalable to accommodate a wide variety of MOSFETs
and load currents. The MAX1962 has 10% accurate
sense-resistor-based current limiting.
The MAX1960 and MAX1962 have an adjustable output
voltage from 0.8V to 4.95V. The MAX1961 and
MAX1962 have four preset output voltages (1.5V, 1.8V,
2.5V, and 3.3V) and feature 0.5% voltage accuracy
over temperature, line, and load variations. The
MAX1960 and MAX1961 also feature voltage-margining
control inputs that shift the output voltage up or down
by 4% for system testing.
Applications
ASIC, FPGA, DSP, and CPU Core and I/O Voltages
Cellular Base Stations
Telecom and Network Equipment
Server and Storage Systems
Features
o
0.5% Accurate Output
o
Operates from 2.35V to 5.5V Supply
o
Generates Low Output Voltage Down to 0.8V
o
On-Chip Charge Pump Provides 5V Gate Drive
o
Ceramic or Electrolytic Capacitors
o
94% Efficiency
o
External Synchronization from 450kHz to 1.2MHz
o
500kHz/1MHz Fixed-Frequency PWM Operation
o
Fast Transient Response
o
Two Converters Can Operate 180° Out-of-Phase
o
±4% Voltage Margining for System Test
o
10% Accurate Current Sensing (MAX1962)
o
Adaptive Dead Time Prevents Shoot-Through
M
2.35V to 5.5V, 0.5% Accurate, 1MHz PWM
Step-Down Controllers with Voltage Margining
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
Ordering Information
19-2740; Rev 0; 1/03
EVAVAILABLE
PART
TEMP RANGE
-40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
PIN-PACKAGE
20 QSOP
20 QSOP
20 QSOP
MAX1960
EEP
MAX1961
EEP
MAX1962
EEP
Pin Configurations and Selector Guide appear at the end
of the data sheet.
MAX1960
V
CC
CTL1
COMP
REF
GND
FSET/SYNC
CLKOUT
AV
DD
V
DD
BST
DH
LX
DL
PGND
FB
C+
C-
INPUT
CLKOUT
180
OUT-OF-PHASE
OUTPUT
0.8 TOUP TO 20A
V
IN
CTL2
ILIM
OPTIONAL
SYNCHRONIZATION
VOLTAGE
MARGINING
Typical Operating Circuit
相关PDF资料 |
PDF描述 |
|---|---|
| MAX1962EEP | 2.35V to 5.5V, 0.5% Accurate, 1MHz PWM Step-Down Controllers with Voltage Margining |
| MAX19700 | 10-Bit, 45Msps, Ultra-Low-Power Analog Front-End |
| MAX19705 | 10-Bit, 45Msps, Ultra-Low-Power Analog Front-End |
| MAX19706 | 10-Bit, 45Msps, Ultra-Low-Power Analog Front-End |
| MAX19707 | 10-Bit, 45Msps, Ultra-Low-Power Analog Front-End |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1962EEP | 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 |
| MAX1962EEP+ | 功能描述:DC/DC 开关控制器 1MHz PWM 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 |
| MAX1962EEP+T | 功能描述:DC/DC 开关控制器 1MHz PWM 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 |
| MAX1962EEP-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 |
| MAX1963AETT120+T | 功能描述:低压差稳压器 - LDO Low Input Voltage 300mA LDO Regulators with RESET in SOT and TDFN RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
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