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产品概述 返回TOP
CXSD62220系列是内装了通用降压DC/DC转换器IC和P-沟道 功率MOSFET的多重实装IC。内置的P-沟道 功率 MOSFET是低导通电阻高速开关型, 与降压DC/DC控制器组合能提供输出电流达到3A的高效率且稳定的电源。此外作为负载电容能使用低ESR钽电容(OS-CON Neo 电容等)。(使用陶瓷电容时, 需要插入RSENSE)内置了0.9V的基准电压源, 能由外部电阻任意设定输出电压。能从重视高效率的300kHz, 可使外置元件小型化的1MHz, 两者之间的500kHz之中选择开关频率。能从采用频率固定, 小纹波的PWM控制(CXSD62220A), 在轻负载时工作于PFM控制, 从轻负载到重负载整个频率范围内实现高效率的PWM/PFM自动转换控制方式(CXSD62220B)之中选择工作模式。能从由内部设定为4ms方式, 需要更加延长时由外部设定方式之中选择软启动时间。内置了UVLO功能，当输入电压在2.3V(TYP)以下时, 能强制停止内部P沟道驱动晶体管工作。The CXSD62220 series is a multi-module IC which includes a step-down DC/DC controller IC and P-channel power MOSFET. The IC enables a high efficiency, stable power supply with an output current up to 3A. Low ESR electrolytic capacitors such as an OS-CON aluminum solid capacitor, a tantalum Neo capacitor can be used as an output capacitor. In case of using a ceramic capacitor, RSENSE is needed to be placed on. The CXSD62220 series has a 0.9V (±1.5%) reference voltage, and using externally connected resistors, the output voltage can be set freely. With an internal switching frequency of 500kHz and 1.0MHz, small external components can also be used. The CXSD62220A has a fixed PWM control for low output voltage ripple, and the CXSD62220B has a PWM/PFM control, which automatically switches from PWM to PFM during light loads and high efficiencies can be achieved over a wide range of load conditions. As for the soft-start time, there are two types, one is internally set to 4ms and the other can be externally set-up. With the built-in UVLO (Under Voltage Lock Out) function, the internal P-channel driver transistor is forced OFF when input voltage becomes 2.3V (TYP.) or lower.
产品特点 返回TOP
应用范围 返回TOP
●LCD TVs
●DSC/DVCs
●Portable games
●Portable equipments
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产品封装图 返回TOP
电路原理图 返回TOP
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降压型DC/DC转换器 |
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产品名称 |
特点 |
封装 |
控制 |
FET |
Synch ronous |
VIN MIN |
VIN MAX |
VOUT MIN |
VOUT MAX |
IOUT IIN |
FB/VOUT电压精度 |
振荡频率kHz |
限制 电流 mA |
消耗 电流 μA
|
限定电流 |
|
(V) |
(V) |
(V) |
(V) |
mA |
自动 闩锁 |
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PWM/PFM |
SOT25 USP-6C |
PWM |
外置 |
No |
2.2 |
10 |
1.5 |
6 |
1000 |
±2.5% |
180 |
15 |
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|
PWM/PFM |
SOT25 USP-6C |
PWM/PFM |
外置 |
No |
2.2 |
10 |
1.5 |
6 |
1000 |
±2.5% |
180 |
15 |
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|
PWM/PFM |
TSSOP16 |
PWM/PFM 外部转换 |
外置 |
Yes |
4 |
25 |
1.5 |
15 |
5000 |
±1.5% |
300 |
450 |
闩锁 |
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|
PWM/PFM |
SOT2 5USP-6C |
PWM |
外置 |
No |
2.8 |
16 |
1.2 |
3000 |
±1.5% |
300 |
25 |
闩锁 |
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|
PWM/PFM |
SOT2 5USP-6C |
PWM/PFM |
外置 |
No |
2.8 |
16 |
1.2 |
3000 |
±1.5% |
300 |
25 |
闩锁 |
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|
PWM/PFM |
MSOP10 USP10B |
PWM/PFM 外部转换 |
Pch |
Yes |
2.5 |
6 |
0.9 |
6 |
1000 |
±2.0% |
1000 |
900 2000 |
30 |
闩锁 |
|
|
PWM/PFM |
MSOP1 0USP10B |
PWM/PFM 外部转换 |
Pch |
Yes |
2.5 |
6 |
0.9 |
6 |
1000 |
±2.0% |
1000 |
900 2000 |
30 |
闩锁 |
|
|
PWM/PFM |
SOT25 USP6C USP6EL WLP5-03 |
PWM |
Pch |
Yes |
1.8 |
6 |
0.8 |
4 |
600 |
±2.0% |
1200 |
1050 |
15 |
闩锁 |
|
|
PWM/PFM |
SOT25 USP6C USP6EL WLP5-03 |
PWM/PFM |
Pch |
Yes |
1.8 |
6 |
0.8 |
4 |
600 |
±2.0% |
1200 |
1050 |
15 |
闩锁 |
|
|
PWM/PFM |
SOT25 USP6C USP6EL WLP5-03 |
PWM/PFM 外部转换 |
Pch |
Yes |
1.8 |
6 |
0.8 |
4 |
600 |
±2.0% |
1200 |
1050 |
15 |
闩锁 |
|
|
2A降压同步整流 |
SOP8F USP10B |
PWM |
Pch |
Yes |
2.7 |
6 |
0.9 |
6 |
2000 |
±2.0% |
1200 |
4000 |
41 |
自动 |
|
|
2A降压同步整流 |
SOP8FD USP10B |
PWM/PFM |
Pch |
Yes |
2.7 |
6 |
0.9 |
6 |
2000 |
±2.0% |
1200 |
4000 |
41 |
自动 |
|
|
400mA 降压同步整流 |
USPN6 |
PWM |
Pch |
Yes |
2.3 |
6 |
0.8 |
4 |
400 |
±2.0% |
1200 |
900 |
18 |
闩锁 |
|
|
400mA 降压同步整流 |
USPN6 |
PWM/PFM |
Pch |
Yes |
2.3 |
6 |
0.8 |
4 |
400 |
±2.0% |
1200 |
900 |
18 |
闩锁 |
|
|
内置驱动晶体管、工作于16V |
SOT26W USP6C |
PWM |
Nch |
No |
4.5 |
16 |
1.2 |
5.6 |
1000 |
±2.0% |
1200 |
2500 |
150 |
闩锁 |
|
|
PWM/PFM |
SOT26W USP6C USP6C |
PWM/PFM |
Nch |
No |
4.5 |
16 |
1.2 |
5.6 |
1000 |
±2.0% |
1200 |
2500 |
150 |
闩锁 |
|
|
PWM |
SOP8FD |
PWM |
Nch |
Yes |
4.5 |
18 |
1 |
12 |
2200 |
±1.5% |
500 |
2100 |
760 |
自动 闩锁 |
|
|
适应105℃工作于30V 低消耗电流 |
SOP8FD |
PWM |
Nch |
No |
7 |
30 |
1.2 |
12 |
2000 |
±2.0% |
300 |
3200 |
200 250 |
自动・闩锁 |
|
|
适应105℃工作于30V 低消耗电流 |
SOP8FD |
PWM/PFM |
Nch |
No |
7 |
30 |
1.2 |
12 |
2000 |
±2.0% |
300 |
3200 |
200 250 |
自动 闩锁 |
|
|
适应105℃工作于30V 低消耗电流 |
TSSOP16 USP10B |
PWM/PFM 外部转换 |
外置 |
No |
3 |
30 |
0.8 |
±2.0% |
ADJ |
30 |
自动 闩锁 |
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PWM/PFM For USB 3.0 |
SOT25 USP6B |
PWM/PFM |
Pch |
Yes |
2 |
6 |
3.3 |
500 |
±2.0% |
600 |
700 |
15 |
闩锁 |
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|
PWM/PFM |
SOT25 USP6C |
PWM/PFM |
Pch |
Yes |
2 |
6 |
1.2 |
600 |
±2.0% |
1200 |
1050 |
15 |
闩锁 |
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|
COT控制 1A |
SOT25 USP6C |
PWM |
Pch |
Yes |
2.5 |
5.5 |
0.8 |
3.6 |
1000 |
±2.0% |
1200 |
1500 |
250 400 |
自动 |
|
|
COT控制 1A |
SOT25 USP6C |
PWM/PFM |
Pch |
Yes |
2.5 |
5.5 |
0.8 |
3.6 |
1000 |
±2.0% |
1200 |
1500 |
15,40 |
自动 |
|
|
COT控制 1A |
LGA8B01 |
PWM/PFM 外部转换 |
Pch |
Yes |
2.5 |
5.5 |
0.8 |
3.6 |
1000 |
±2.0% |
1200 |
1500 |
15,40 |
自动 |
|
|
COT控制 1.5A |
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