CXDR7581 IC combines a Dual synchronous Buck controller and a linear regulator controller, providing a cost-ffective, high performance and flexible solution for multi-output applications. The Dual
目录
1.产品概述 2.产品特点
3.应用范围 4.下载产品资料PDF文档
5.产品封装图</span> 6.电路原理图</span>
7.功能概述 8.相关产品
一,产品概述(General Description) ![]()
The CXDR7581 IC combines a Dual synchronous Buck controller and a linear regulator controller,
providing a cost-ffective, high performance and flexible solution for multi-output applications. The Dual
synchronous controller is configured as 2-independent PWM controller. CXDR7581 provides a separate
adjustable output by driving a switch as a linear regulator. This device features an internal 200KHz
oscillator, under-voltage lockout for all input supplies, an external programmable soft start function as
well as output under-voltage detection that latches off the device when an output short is detected.
二</span>.产品特点(Features)![]()
LDO Controller with 40mA drive
Dual Synchronous Controller in 16-Pin Package
with 180o out-of-phase operation
Configured as 2-Independent PWM Controller
Flexible, Same or Separate Supply Operation
Operation from 4V to 25V Input
Internal 200KHz Oscillator
Soft-Start controls all outputs
Fixed Frequency Voltage Mode
500mA Peak Output Drive Capability
Programmable Outputs
RoHS Compliant & Halogen Free Product
三</span>,应用范围 (Applications)![]()
DDR Memory Source Sink Vtt Application
Graphic Card
Hard Disk Drive
Power supplies requiring multiple outputs
四.技术</span>规格书下载(产品PDF)</span>
需要详细的PDF规格书请扫一扫微信联系我们,还可以获得免费样品以及技术支持</span>!</span>

五,产品封装图 (Package)![]()

六.电路原理图</span>![]()

七</span>,功能概述![]()
Vcc Supply Voltage .................................................. 25V
VcH1=VcH2 Supply Voltage ...................................... 30V (not rated for inductive load)
Storage Temperature Range ...................................... -65°C To 150°C
Operating Junction Temperature Range ..................... 0°C To 125°C
八,相关芯片选择指南 更多同类产品......![]()
DDR Terminator | ||||||
Part Number | Vin(typ) | Vin(max) | Max. Current (A) | Current Limit (A) | Quiescent | Packages |
1.1/1.4/2.5 | 6 | 2.5 | 3 | 0.05 | Exposed SO8 | |
1.5/1.8/2.5 | 6 | 2.5 | 3.2 | 0.05 | Exposed SO8 | |
1.5/1.8/2.5 | 6 | 2 | 2.2 | 0.05 | Exposed SO8 | |
Reset IC | |||||||
Part number | Operation Voltage | Open-Drain Output Duration | Quiescent Current(uA) | Reset Timer Delay | Test Mode | Package | Operation |
1.65~5.5 | 400ms | < 1 | 7.5s | support | SOT-26 | -40 ~ 85 | |
Return Dual Phase | ||||||||
Part no. | Vref | Max.Supply Voltage(s) | Frequency (Typ.) | 2-Independent | 2-Phase | Output Drive | Package | Demo board |
0.8V | 16V | 200~500KHz | Yes | Yes | 1A | 28-Pin TSSOP 28-Pin SOIC | yes | |
Dual Output + LDO Controller | ||||||||
Part no. | Vref | Max.Supply Voltage(s) | Frequency (Typ.) | LDO Controller | 2- Independent | 2-Phase (Current Sharing) | Output Drive | Package |
1.25V | 25V | 200KHz | 45mA | Yes | No | 0.5A | 16-pin TSSOP | |

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