CXSD62217通过MODE/SYNC端子，在内部CLK±25%的范围内与外部CLK进行同步，可以抑制产生不必要的噪声。PWM/PFM自动切换控制通过在轻负载时的PFM控制工作，实现了从轻负载到重负载整个区域内的高效率。关于软启动时间，通过追加在SS端子外部容量，可以任意地设定软启动时间。内置了UVLO功能，当输入电压在4.6V以下时，强制地停止驱动晶体管工作
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产品概述 返回TOP
CXSD62217系列产品是内置驱动晶体管,工作于30V的降压DC/DC转换IC。由自举方式驱动内置的驱动晶体管，实现了输出电流2.0A高效率稳定电源。此外作为负载电容(CL)可以使用陶瓷电容等低ESR电容。内置了0.8V的基准电压源，通过外接电阻(RFB1,RFB2)可以在1.2V～12.0V(TBD)的范围内设定输出电压。可以从300kHz/500kHz中选择开关频率。此外，通过MODE/SYNC端子，在内部CLK±25%的范围内与外部CLK进行同步，可以抑制产生不必要的噪声。PWM/PFM自动切换控制通过在轻负载时的PFM控制工作，实现了从轻负载到重负载整个区域内的高效率。关于软启动时间，通过追加在SS端子外部容量，可以任意地设定软启动时间。内置了UVLO功能，当输入电压在4.6V以下时，强制地停止驱动晶体管工作。作为保护电路，内置了过电流保护,积分锁定保护电路,短路保护电路,过热停机电路，能保证安全地使用。The CXSD62216/CXSD62217 series are 30V operation step-down DC/DC converter ICs with an internal driver transistor. The internal Nch driver transistor is driven by bootstrap to achieve a stable, high-efficiency power supply up to an output current of 2.0A. Low ESR capacitors such as ceramic capacitors can be used for the load capacitor (CL). A 0.8V reference voltage source is incorporated in the IC, and the output voltage can be set to a value from 1.2V to 12.0V using external resistors (RFB1, RFB2). 300kHz or 500kHz can be selected for the switching frequency. The generation of unneeded noise can be suppressed by synchronizing to an external CLK in a range of ±25% of the free running frequency using the SYNC pin. In automatic PWM/PFM control, the IC operates by PFM control when the load is light to achieve high efficiency over the full load range from light to heavy. The soft start time can be set as desired by adding an external capacitance to the SS pin. With the built-in UVLO function, the driver transistor is forced OFF when input voltage becomes 4.5V or lower. Internal protection circuits include over current protection, integral latch protection, short-circuit protection, and thermal shutdown circuits to enable safe use.
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●Car navigation systems
●Car audios
●Industrial equipment
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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 |
|||
|
PWM/PFM |
SOT25 USP-6C |
PWM/PFM |
外置 |
No |
2.2 |
10 |
1.5 |
6 |
1000 |
±2.5% |
180 |
15 |
|||
|
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 |
|||
|
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 |
||
|
PWM/PFM |
SOT25 USP6C |
PWM/PFM |
Pch |
Yes |
2 |
6 |
1.2 |
600 |
±2.0% |
1200 |
1050 |
15 |
闩锁 |
||
|
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 |
SOT89-5 USP6C |
PWM |
Pch |
Yes |
2.7 |
5.5 |
0.8 |
3.6 |
1500 |
±2.0% |
1200 |
3000 |
250 400 |
自动 |
|
|
COT控制 1.5A |
SOT89-5 USP6C |
PWM/PFM |
Pch |
Yes |
2.7 |
5.5 |
0.8 |
3.6 |
1500 |
±2.0% |
1200 |
3000 |
15,25 |
自动 |
|
|
COT控制 1.5A |
LGA8B01 |
PWM/PFM 外部转换 |
Pch |
Yes |
2.7 |
5.5 |
0.8 |
3.6 |
1500 |
±2.0% |
1200 |
3000 |
15,25 |
自动 |
|
|
工作于18V 内置驱动晶体管 |
SOT25 USP6C |
PWM |
Pch |
Yes |
3 |
18 |
1 |
15 |
500 |
±1.5% |
500 |
11.5, 12.5, 13.5 |
自动 闩锁 |
||
|
工作于18V 内置驱动晶体管 |
SOT25 USP-6C |
PWM/PFM |
Pch |
Yes |
3 |
18 |
1 |
15 |
500 |
±1.5% |
500 |
11.5, 12.5, 13.5 |
自动 闩锁 |
||
|
超低消耗 降压PFM同步整流 |
SOT25 USP6EL |
PFM |
Pch |
Yes |
2 |
6 |
1 |
4 |
200 |
±2.0% |
180 330 |
0.5 |
|||
|
COT控制 6A |
QFN040 4-24C |
PWM/PFM 外部转换 |
Pch |
Yes |
2.7 |
5.5 |
0.8 |
3.6 |
6000 |
±1.0% |
1200 |
10000 |
40 |
闩锁 |
|
|
适应105℃内置了工作于30V的驱动晶体管 |
SOP8FD |
PWM |
Nch |
No |
7 |
30 |
1.2 |
12 |
2000 |
±2.0% |
300 |
3200 |
200 |
自动 闩锁 |
|
|
105℃内置了工作于30V的驱动晶体管 |
SOP8FD |
PWM/PFM |
Nch |
No |
7 |
30 |
1.2 |
12 |
2000 |
±2.0% |
300 |
3200 |
200 |
自动 闩锁 |
|
|
超低消耗 降压PFM同步整流 |
SOT25 USP6EL |
PFM |
Pch |
Yes |
2 |
6 |
0.6 |
0.95 |
50 |
0.5 |
No |
||||
|
COT控制 3.0A |
QFN040 4-24C |
PWM,PWM PFM |
Pch |
Yes |
2.7 |
5.5 |
0.8 |
3.6 |
3000 |
1200 |
40 |
闩锁 |
|||
|
降压+P-ch Power MOS |
USP12B01 |
PWM,PWM PFM |
Pch |
No |
4 |
16 |
1.2 |
3000 |
±1.5% |
500 |
闩锁 |
||||
|
车载类, 2A同步整流 |
USP10B |
PWM/PFM |
Pch |
Yes |
2.7 |
6 |
0.9 |
6 |
2000 |
±2.0% |
1200 |
41 |
Auto |
||
|
车载类, 2A 同步整流 |
USP10B |
PWM/PFM |
Pch |
Yes |
2.7 |
6 |
0.9 |
6 |
2000 |
±2.0% |
1200 |
41 |
Auto |
||
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车载类, COT控制 1.5A同步整流降压型 |
USP6C |
PWM |
Pch |
Yes |
2.7 |
5.5 |
0.8 |
3.6 |
1500 |
±2.0% |
1200 |
25 |
Auto |
||
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车载类, COT控制 1.5A同步整流降压型 |
USP6C |
PWM/PFM |
Pch |
Yes |
2.7 |
5.5 |
0.8 |
3.6 |
1500 |
±2.0% |
1200 |
25 |
Auto |
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◀ 上一篇:内置驱动晶体管30V的降压DC/DC转换CXSD62216输出电流2.0A高效率稳定电源300kHz/500kHz中选择开关频率PWM/PFM自动切换控制
下一篇▶:N沟道同步整流开关晶体管超低消耗的降压同步整流DC转换器CXSD62218陶瓷电容轻负载时高效率的机器
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