參數(shù)資料
型號： MAX5020
廠商： Maxim Integrated Products, Inc.
英文描述： Current-Mode PWM Controllers with Integrated Startup Circuit
中文描述： 電流模式PWM控制器，集成啟動電路
文件頁數(shù)： 1/14頁
文件大?。?/td> 328K
代理商： MAX5020
General Description
The MAX5019/MAX5020 integrate all the building
blocks necessary for implementing DC-DC fixed-fre-
quency power supplies. Either primary- or secondary-
side regulation may be used to implement isolated or
nonisolated power supplies. These devices are current-
mode controllers with an integrated high-voltage start-
up circuit suitable for telecom/industrial voltage range
power supplies. Current-mode control with leading-
edge blanking simplifies control-loop design and inter-
nal ramp compensation circuitry stabilizes the current
loop when operating at duty cycles above 50%
(MAX5019). The MAX5019 allows 85% operating duty
cycle and can be used to implement flyback converters
whereas the MAX5020 limits the operating duty cycle to
less than 50% and can be used in single-ended for-
ward converters. A high-voltage startup circuit allows
these devices to draw power directly from the 18V to
110V input supply during startup. The switching fre-
quency is internally trimmed to 275kHz ±10%, thus
reducing magnetics and filter component costs.
The MAX5019/MAX5020 are available in 8-pin SO
packages.
Warning:
The MAX5019/MAX5020 operate with high
voltages. Exercise caution.
Applications
Telecom Power Supplies
Industrial Power Supplies
Networking Power Supplies
Isolated Power Supplies
Features
o
Wide Input Range: (18V to 110V) or (13V to 36V)
o
Isolated (without optocoupler) or Nonisolated
Power Supply
o
Current-Mode Control
o
Leading-Edge Blanking
o
Internally Trimmed 275kHz ±10% Oscillator
o
Low External Component Count
o
Soft-Start
o
High-Voltage Startup Circuit
o
Pulse-by-Pulse Current Limiting
o
Thermal Shutdown
o
SO-8 Package
M
Current-Mode PWM Controllers with Integrated
Startup Circuit
________________________________________________________________
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
GND
CS
1
2
8
7
V
CC
NDRV
V
DD
FB
V+
8-SO
TOP VIEW
3
4
6
5
MAX5019/
MAX5020
SS_SHDN
Pin Configuration
Ordering Information
NDRV
V
IN
V
OUT
V
DD
V
CC
CS
FB
MAX5020
V+
SS_SHDN
GND
Typical Operating Circuit
19-2115; Rev 0; 7/01
PART
TEMP. RANGE
0
°
C to +70
°
C
-40
°
C to +85
°
C
0
°
C to +70
°
C
-40
°
C to +85
°
C
PIN-PACKAGE
8-SO
8-SO
8-SO
8-SO
MAX5019
CSA*
MAX5019ESA*
MAX5020
CSA*
MAX5020ESA*
*See Selector Guide at end of data sheet.
相關PDF資料
PDF描述
MAX5019-MAX5020 Current-Mode PWM Controllers with Integrated Startup Circuit
MAX5019 Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C
MAX5020CSA Analog IC
MAX5020ESA Analog IC
MAX5019ESA Analog IC
相關代理商/技術參數(shù)
參數(shù)描述
MAX5020CSA 功能描述:電流型 PWM 控制器 w/Integrated Startup RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14
MAX5020CSA+ 功能描述:電流型 PWM 控制器 w/Integrated Startup RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14
MAX5020CSA+T 功能描述:電流型 PWM 控制器 w/Integrated Startup RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14
MAX5020CSA-T 功能描述:電流型 PWM 控制器 w/Integrated Startup RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14
MAX5020ESA 功能描述:電流型 PWM 控制器 w/Integrated Startup RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14
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