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N沟道开关晶体管的降压同步整流DC/DC转换器CXSD62197稳定输出400mA的电流开关频率高达1.2MHz软启动有积分锁定方式的限定电流 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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目录7.相关产品 产品概述 返回TOP CXSD62197系列产品是能使用陶瓷电容,内置0.65ΩP沟道驱动晶体管及0.45ΩN沟道开关晶体管的降压同步整流DC/DC转换器。只使用线圈和电容作为外置零部件，能稳定地提供最大400mA的电流。CXSD62197系列产品内部设定了输出电压，能在0.8V～4.0V的范围内(±2.0%)以0.05V的间隔选择输出电压。开关频率高达1.2MHz，能减小外置零部件的尺寸。采用USPN-6封装。USPN-6封装最适用于对高度及空间有限制的应用。由于在待机时整个电路停止工作，能把消耗电流抑制在1.0μA以下。在待机时，由CL高速放电功能使VOUT-VSS之间的内部开关导通，通过内部电阻使CL的电荷放电。这个功能可以在待机时防止VOUT后续电路的错误动作。由内部把软启动时间设定为0.25ms（TYP.），能使输出电压高速地上升。为了保护IC不受热损坏，CXSD62197系列产品备有积分锁定方式的限定电流功能。内置了UVLO (输入欠压锁闭Under Voltage Lock Out) 功能，在输入电压低于2.25V(最大)时，强制停止内部驱动晶体管工作。The CXSD62196/CXSD62197 series is a group of synchronous-rectification type step-down DC/DC converters with a built-in 0.65Ω P-channel MOS driver transistor and 0.45Ω N-channel MOS switching transistor, designed to allow the use of ceramic capacitors. Output current of 400mA (MAX.) to be configured using only a coil and capacitor connected externally. The output voltage can be set from 0.8V to 4.0V in increments of 0.05V (accuracy: ±2.0%). With an internal switching frequency of 1.2MHz, small external components can be used. USPN-6 package is suitable for the application which requires low profile and small-footprint. The CXSD62196 series is PWM fixed frequency control, and the CXSD62197 series is PWM/PFM, which automatically switches from PWM to PFM during light loads, high efficiency can be achieved over a wide range of load conditions. When stand-by mode, due to stop all operation, supply current is reduced to 1μA or less. The integrated CL discharge function which enables the electric charge at the output capacitor CL to be discharged via the internal discharge switch located between the VOUT and VSS pins. The CL discharge function prevents malfunction on VOUT connecting application during stand-by mode. The CXSD62196/CXSD62197 series has a high speed soft-start as fast as 0.25ms in typical for quick turn-on. Current limiter circuit (Constant Current & Latching) is built-in for preventing from thermal destruction. With UVLO (Under Voltage Lock Out) function, the internal P channel driver transistor is forced OFF when input voltage becomes 2.25V or lower. 产品特点 返回TOP 应用范围 返回TOP ●Smart phones / Mobile phones ●Bluetooth ●Mobile devices / terminals ●Portable game consoles ●Digital still cameras / Camcorders ●Note PCs / Tablet PCs 技术规格书（产品PDF) 返回TOP 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！ 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 |
|
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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 |
|
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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 |
|
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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 |
|
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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 |
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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 |
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