DataSheet8.cn


PDF ( 数据手册 , 数据表 ) ACT4070B

零件编号 ACT4070B
描述 Wide Input 3A Step Down Converter
制造商 Active-Semi
LOGO Active-Semi LOGO 


1 Page

No Preview Available !

ACT4070B 数据手册, 描述, 功能
ACT4070B
Rev 0, 23-Apr-12
Wide Input 3A Step Down Converter
FEATURES
3A Output Current
Up to 95% Efficiency
6.5V to 30V Input Range
100µA Shutdown Supply Current
4mA Standby Input Current
300kHz Switching Frequency
Output Voltage Up to 12V
Cycle-by-Cycle Current Limit Protection
Thermal Shutdown Protection
Internal Soft Start Function
Frequency Fold Back at Short Circuit
Stability with Wide Range of Capacitors
Including Low ESR Ceramic Capacitors
SOP-8/EP (Exposed Pad) Package
APPLICATIONS
TFT LCD Monitors or Televisions and HDTV
Portable DVD Players
Car-Powered or Battery-Powered Equipment
Set-Top Boxes
Telecom Power Supplies
DSL and Cable Modems and Routers
GENERAL DESCRIPTION
ACT4070B is a wide input voltage step-down
DC/DC converter that provides up to 3A output cur-
rent at 300kHz switching frequency. ACT4070B is a
replacement part for ACT4070 with advanced fea-
tures such as lower standby current and higher light
load efficiency. ACT4070B can be dropped into
ACT4070 socket with only feedback resistance
value changed.
ACT4070B’s protection features include Cycle-by-
Cycle current limit, thermal shutdown, and fre-
quency foldback at over current and short circuit.
The devices are available in a SOP-8EP package
and require very few external devices for operation.
NOTE:
ACT4070B is the replacement part for
ACT4070.
TYPICAL APPLICATION CIRCUIT
100
80
60
40
20
0
1
Efficiency vs. Load Current
VIN = 12V
VIN = 24V
VOUT = 5V
10
100
1000
10000
Load Current (mA)
Innovative PowerTM
- 1 - www.active-semi.com
Copyright © 2012 Active-Semi, Inc.







ACT4070B pdf, 数据表
TYPICAL PERFORMANCE CHARACTERISTICS
(Circuit of Figure 3, unless otherwise specified.)
ACT4070B
Rev 0, 23-Apr-12
100
80
60
40
20
0
1
Efficiency vs. Load Current
VIN = 12V
VIN = 24V
VOUT = 5V
10 100 1000
Load Current (mA)
10000
Load Transient Response
VIN = 12V
V0UT = 5V
CH1
CH2
Shutdown Current vs. Input Voltage
120
100
80
60
40
20
0
5 10 15 20 25 30
Input Voltage (V)
Load Transient Response
VIN = 24V
V0UT = 5V
CH1
CH2
CH1: IOUT, 1A/div
CH2: VOUT, 200mV/div
TIME: 400µs/div
Maximum Peak Current vs. Duty Cycle
4.5
4.2
3.9
3.6
3.3
3
20
30 40 50
Duty Cycle
60 70
Innovative PowerTM
-8-
CH1: IOUT, 1A/div
CH2: VOUT, 200mV/div
TIME: 400µs/div
www.active-semi.com
Copyright © 2012 Active-Semi, Inc.














页数 9 页
下载[ ACT4070B.PDF 数据手册 ]


分享链接

Link :

推荐数据表

零件编号描述制造商
ACT4070Wide Input 3A Step Down ConverterActive-Semi
Active-Semi
ACT4070Wide Input 3A Step Down ConverterActive-Semi
Active-Semi
ACT4070BWide Input 3A Step Down ConverterActive-Semi
Active-Semi

零件编号描述制造商
STK15C88256-Kbit (32 K x 8) PowerStore nvSRAMCypress Semiconductor
Cypress Semiconductor
NJM4556DUAL HIGH CURRENT OPERATIONAL AMPLIFIERNew Japan Radio
New Japan Radio
EL1118-G5 PIN LONG CREEPAGE SOP PHOTOTRANSISTOR PHOTOCOUPLEREverlight
Everlight


DataSheet8.cn    |   2020   |  联系我们   |   搜索  |  Simemap