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| 型号： | MAX5021EUA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/11页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR FLYBK ISO PWM 8UMAX |
| 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 |
| 输出数： | 1 |
| 频率 - 最大： | 290kHz |
| 占空比： | 51% |
| 电源电压： | 11 V ~ 28 V |
| 降压： | 无 |
| 升压： | 无 |
| 回扫： | 是 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 包装： | 带卷 (TR) |
IT AVAILA
19-2066; Rev 1; 9/01
BLE
EVA LUATION K
Current-Mode PWM Controllers for Isolated
Power Supplies
General Description
The MAX5021/MAX5022 current-mode PWM controllers
contain all the control circuitry required for the design
of wide input voltage range isolated power supplies.
These devices are well suited for use in universal input
(85VAC to 265VAC) off-line or telecom (-36VDC to
-72VDC) power supplies.
An undervoltage lockout (UVLO) circuit with large hys-
teresis coupled with low startup and operating current
reduce power dissipation in the startup resistor and
allow use of ceramic bypass capacitors. The 262kHz
switching frequency is internally trimmed to ±12%
accuracy; this allows the optimization of the magnetic
and filter components resulting in compact, cost-effec-
tive power supplies. The MAX5021 with 50% maximum
duty cycle and MAX5022 with 75% maximum duty
cycle are recommended for forward converters and fly-
back converters, respectively. The MAX5021/MAX5022
Features
o Available in a Tiny 6-Pin SOT23 Package
o 50μA Typical Startup Current
o 1.2mA Typical Operating Current
o Large UVLO Hysteresis of 14V
o Fixed Switching Frequency of 262kHz ±12%
o 50% Maximum Duty Cycle Limit (MAX5021)
o 75% Maximum Duty Cycle Limit (MAX5022)
o 60ns Cycle-by-Cycle Current-Limit Response
Time
Ordering Information
are available in 6-pin SOT23, 8-pin μMAX, and 8-pin
DIP packages and are rated for operation over the
-40°C to +85°C temperature range.
PART
MAX
DUTY
CYCLE
TEMP.
RANGE
PIN- TOP
PACKAGE MARK
Applications
Universal Off-Line Power Supplies
Standby Power Supplies
MAX5021 EUT
MAX5021EUA
MAX5021EPA
MAX5022 EUT
50%
50%
50%
75%
-40 ° C to +85 ° C 6 SOT23-6 AASQ
-40 ° C to +85 ° C 8 μ MAX —
-40 ° C to +85 ° C 8 PDIP —
-40 ° C to +85 ° C 6 SOT23-6 AASR
Isolated Power Supplies
Isolated Telecom Power Supplies
MAX5022EUA
MAX5022EPA
75%
75%
-40 ° C to +85 ° C 8 μ MAX
-40 ° C to +85 ° C 8 PDIP
—
—
Mobile Phone Chargers
Typical Operating Circuit
V SUPPLY
V OUT
WARNING: The MAX5021/MAX5022 are designed to work
with high voltages. Exercise caution!
Pin Configuration
TOP VIEW
CS 1
6
OPTO OPTO 1
8
CS
V CC
V IN
GND 2
MAX5021
MAX5022
5
V IN
V IN 2
V CC 3
MAX5021
MAX5022
7
6
GND
NDRV
MAX5021
MAX5022
NDRV 3
4
V CC
N.C. 4
5
N.C.
OPTO NDRV
CS
GND
SOT23
PDIP/ μ MAX
________________________________________________________________ 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
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5021EUT | 制造商:Maxim Integrated Products 功能描述:LOW-POWER CURRENT-MODE PWM CONTROL - Cut Tape Product |
| MAX5021EUT+ | 制造商:Maxim Integrated Products 功能描述:CURRENT MODE PWM CNTRLR 250MA 6PIN SOT-23 - Rail/Tube |
| MAX5021EUT+T | 功能描述:电流型 PWM 控制器 for Isolated Power Supplies 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 |
| MAX5021EUT-T | 功能描述:电流型 PWM 控制器 for Isolated Power Supplies 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 |
| MAX5021EVKIT | 功能描述:电源管理IC开发工具 MAX5021 Eval Kit RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
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