CXSD62599是一款全新的，结合电压模式控制和固定开启时间（COT）优点的高频同步降压转换器。其自适应的COT控制方式，可以在使得最快的负载瞬态响应的同时，确保振荡频率基本维持不变。同时CXSD62599实现了在极低的输出电压（极低占空比）下控制环路在高速响应负载变化的前提下保持稳定，并实现轻载PFM和重载PWM控制模式下的平稳过渡
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产品概述 返回TOP
CXSD62599是一款全新的，结合电压模式控制和固定开启时间（COT）优点的高频同步降压转换器。其自适应的COT控制方式，可以在使得最快的负载瞬态响应的同时，确保振荡频率基本维持不变。同时CXSD62599实现了在极低的输出电压（极低占空比）下控制环路在高速响应负载变化的前提下保持稳定，并实现轻载PFM和重载PWM控制模式下的平稳过渡。CXSD62599可在1.2V输出下提供超过3.5A的电流，是为智能产品的主控供电的最佳选择。CXSD62599 belongs to a new breed of high frequency synchronous Step-Down converters that combines the advantages of voltage mode control and Constant-On-Time control. Its adaptive Constant-On-Time control dynamically changes switch on time to achieve a constant switching frequency. It does not have the minimum on-time constrain normally a fixed-frequency current mode Step-down requires, allowing it to go down to very low duty ratio without affecting loop stability. The voltage mode nature of CXSD62599 also provides more superior load transient response and a seamless transition from PFM to PWM modes. CXSD62599 is capable of supplying output with current up to 3A at 1.2V output.All these features make CXSD62599an excellent choice for ARM based CPU power supply. CXSD62599is in a SOT23-6 package.
产品特点 返回TOP
Adaptive COT control
Up to 95% Efficiency
Up to 91% Efficiency for low output voltage
Up to 3A Max Output current
Feedback voltage 0.45V
Excellent load transient response
SOT23-6 Package
应用范围 返回TOP
ARM based CPUs
Tablet, MID
Smart Phone
Smart Set-Top Box, OTT
技术规格书（产品PDF) 返回TOP
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产品封装图 返回TOP
电路原理图 返回TOP
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型号 |
产品描述 |
架构 |
VIN (min) (V) |
VIN (max) (V) |
VOUT (min) (V) |
VOUT (max) (V) |
IOUT (max) (A) |
Vfb (V) |
开关 频率 (Hz) |
IQ (uA) |
封装形式 |
|
3通道6V/3.5A |
同步降压 |
2.6 |
6 |
0.45 |
3.6 |
3.5 |
0.45 |
1.5M |
40 |
DFN4X4-24 |
|
|
3通道6V/1.5A |
内部补偿 |
2.6 |
5.5 |
0.6 |
3.6 |
1.5*3 |
0.6 |
1.5M |
40 |
||
|
18V/2A同步降压 |
内部补偿 |
4.2 |
28 |
0.8 |
9 |
2 |
0.8 |
1M |
750 |
||
|
6V/3A同步降压 |
内部补偿 |
3.6 |
6 |
0.6 |
5 |
1 |
0.6 |
1.8M |
420 |
||
|
18V/3A同步降压 |
内部补偿 |
4.5 |
18 |
0.6 |
5 |
3 |
0.6 |
500k |
177 |
||
|
6V/1A同步降压 DFN2X2-6封装 |
内部补偿 |
2.6 |
6 |
0.6 |
5 |
1 |
0.6 |
500k |
40 |
DFN2X2-6 |
|
|
7.3V/3A同步降压 |
内部补偿 |
2.4 |
7.3 |
0.6 |
5 |
3 |
0.6 |
1.5M |
42 |
SOT26 |
|
|
7V/1.2A同步降压 |
内部补偿 |
2.6 |
7.2 |
0.6 |
5 |
1 |
0.6 |
1.5M |
40 |
SOT25 |
|
|
5.5V/2A同步降压 |
3.6 |
5.5 |
0.8 |
5 |
2 |
0.8 |
1.4M |
450 |
|||
|
6V/3A同步降压 COT架构 |
内部补偿 |
2.6 |
6 |
0.45 |
5 |
3 |
0.45 |
1.5M |
|||
|
CXSD62600A |
7V/0.6A同步降压 |
内部补偿 |
2.6 |
7 |
1.11 |
5 |
0.6 |
1.11 |
1.2M |
1 |
SOT25 DFN2X2-6 |
|
CXSD62601A |
6V双路1.2A同步降压 |
内部补偿 |
2.6 |
5.5 |
0.6 |
5 |
1.2 |
0.6 |
1.2M |
38 |
SOP8 |
|
CXSD62602A |
6V/2A3MHz同步降压 |
内部补偿 |
2.6 |
5.5 |
0.6 |
5 |
2 |
0.6 |
3M |
30 |
DFN2x2-8 |
|
CXSD62603A |
18V/2A同步降压 |
内部补偿 |
4.2 |
18 |
0.6 |
6 |
2 |
0.65 |
500K |
700 |
SOT23-6 |
|
38V/0.4A同步降压 |
内部补偿 |
5 |
38 |
3.3 |
12 |
0.4 |
0.8 |
700K |
850 |
SOT23-6 |
|
|
18V/3A同步降压 |
内部补偿 |
4.5 |
18 |
0.798 |
5 |
3 |
0.798 |
700K |
177 |
SOT563 |
|
|
18V/2A同步降压 |
内部补偿 |
4.5 |
18 |
0.798 |
5 |
2 |
0.798 |
700K |
177 |
SOT563 |
