CXSD62218输出电压为内部设定品，可在0.05V间隔下在0.6V～0.95V(精度±20mV)范围内设定。通过在待机模式时停止整个电路，将消耗电流控制在0.1μA以下(TYP.)。内置了UVLO（Under Voltage Lock Out）功能，在输入电压低于UVLO电压的情况下，强制地关闭内部P沟道驱动晶体管。
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产品概述 返回TOP
CXSD62218系列是对应陶瓷电容，内置了0.4Ω(TYP.)P沟道驱动晶体管及0.4Ω(TYP.)N沟道同步整流开关晶体管的超低消耗的降压同步整流DC/DC转换器。采用了PFM控制，实现了超低消耗电流，最适于重视在轻负载时高效率的机器及在意电池寿命的机器。外置部件仅需用线圈与输入,输出的2个电容，即可实现降压DC/DC电路。工作电压范围在2.0V～6.0V。输出电压为内部设定品，可在0.05V间隔下在0.6V～0.95V(精度±20mV)范围内设定。通过在待机模式时停止整个电路，将消耗电流控制在0.1μA以下(TYP.)。内置了UVLO（Under Voltage Lock Out）功能，在输入电压低于UVLO电压的情况下，强制地关闭内部P沟道驱动晶体管。此外，UVLO解除电压是1.8V(TYP.)。具有CL放电功能(CXSD62218B型)在待机时，通过打开VOUT-GND间的内部开关，并通过内电阻向CL电荷放电。此放电机能，能使输出电压高速返还到GND电平。CXSD62218 series are Ultra Low Quiescent Current synchronous-rectification for Low Output Voltage type PFM step down DC/DC converters with a built-in 0.4Ω (TYP.) Pch driver and 0.4Ω (TYP.) Nch synchronous switching transistor, designed to allow the use of ceramic capacitor. PFM control enables a low quiescent current, making these products ideal for battery operated devices that require high efficiency and long battery life. Only inductor, CIN and CL capacitors are needed as external parts to make a step down DC/DC circuit. Operation voltage range is from 2.0V to 6.0V. This product has fixed output voltage from 0.6V to 0.95V(accuracy: ±20mV) in increments of 0.05V. During stand-by, all circuits are shutdown to reduce consumption to as low as 0.1μA(TYP.) or less. With the built-in UVLO (Under Voltage Lock Out) function, the internal P-channel MOS driver transistor is forced OFF when input voltage gets lower than UVLO detection voltage. Besides, CXSD62218 series has UVLO release voltage of 1.8V (Typ.). The product with CL discharge function, CXSD62218B type, can discharge CL capacitor during stand-by mode due to the internal resistance by turning on the internal switch between VOUT -GND. This enables output voltage restored to GND level fast.
产品特点 返回TOP
应用范围 返回TOP
● Electric devices with GPS
● Wearable devices
● Energy Harvest devices
● Backup power supply circuits
● Devices with 1 Lithium cell
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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 |
|||
|
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 |
||
|
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 |
||
◀ 上一篇:自举方式驱动内置的驱动晶体管CXSD62217输出电流2.0A高效率稳定电源MODE/SYNC端子PWM/PFM自动切换控制软启动
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