CXSD62186系列是内置bootstrap驱动电路的N-ch & N-ch驱动,同步整流,降压DC/DC控制器。不管负载使用什么电容，包括低ESR电容，输出都能保持稳定。需要使用数十毫欧的电阻(RSENSE)作为电流感应电阻，同时也可以为使用低ESR电容进行相位补偿。此外，当电路检测到过冲电流就进行限流并且用保护时间设定电容(CPRO)能使输出关断任何给定的时间。通过这两点给予整个电路双重保护。通过1.0V(±2.0%)内部参考电压和外接分压电阻(RFB1, 2)，输出电压可以在1.5V～15V范围内自由设定
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产品概述 返回TOP
CXSD62186系列是内置bootstrap驱动电路的N-ch & N-ch驱动,同步整流,降压DC/DC控制器。不管负载使用什么电容，包括低ESR电容，输出都能保持稳定。需要使用数十毫欧的电阻(RSENSE)作为电流感应电阻，同时也可以为使用低ESR电容进行相位补偿。此外，当电路检测到过冲电流就进行限流并且用保护时间设定电容(CPRO)能使输出关断任何给定的时间。通过这两点给予整个电路双重保护。通过1.0V(±2.0%)内部参考电压和外接分压电阻(RFB1, 2)，输出电压可以在1.5V～15V范围内自由设定。通过使用MODE端子，同步整流PWM控制可以切换到非同步整流30mV(＝RSENSE两端电压)限流PFM/PWM自动切换控制。该系列有一个内置的电压检测器，用来检测由外接电阻设定的电压。当待机时(CE＝“L”)，整个电路被关断，消耗电流降低到4.0μA或更小。The CXSD62186 series is N-ch & N-ch drive, synchronous, step-down DC/DC controller IC with a built-in bootstrap driver circuit. Output will be stable no matter which load capacitors, including low ESR capacitors, are used. Resistance (RSENSE) of about several 10mΩ will be required as a current sense. The phase compensation is also run when a low ESR capacitor is used. In addition, the circuit is double protected by the ways of limiting the current while detecting overshoot current and making output shutdown at any given timing by a protection time setting capacitor (CPRO). The output voltage can be set freely within a range of 1.5V~15.0V with 1.0V (accuracy±2%) of internal reference voltage by using externally connected resistors (RFB1, 2). Synchronous rectification PWM control can be switched to non-synchronous current limit PFM/PWM automatic switchable control (=voltage between RSENSE pins) by using the MODE pin. The series has a built-in voltage detector for monitoring a selected voltage by external resistors. During stand-by (CE pin = low) all circuits are shutdown to reduce current consumption to as low as 4.0μA or less.
产品特点 返回TOP
应用范围 返回TOP
●E-book Readers / Electronic dictionaries
●Smart phones / Mobile phones
●Note PCs / Tablet PCs
●Digital audio equipments
●Multi-function power supplies
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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 |
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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 |
|
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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 |
|
|
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 |
|
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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 |
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 |
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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 |
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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 |
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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 |
|
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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 |
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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 |
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降压+P-ch Power MOS |
USP12B01 |
PWM,PWM PFM |
Pch |
No |
4 |
16 |
1.2 |
3000 |
±1.5% |
500 |
闩锁 |
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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, 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:高速低通态电阻驱动器CXSD62185输出电流为1A高频高效率降压DC/DC转换器PWM/PFM切换控制间隔进行设定
下一篇▶:16V输入电压降压DC/DC控制器CXSD62187输出电流高达3A的电源低ESR电容内置的UVLO （欠压锁闭）功能
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