CXSU63157系列是PWM控制升压型控制器IC。由于最大占空比高达93%，该系列适用于高升压比应用，比如LCD面板和OELD。即使是高升压比，该系列依然能得到高效,稳定的电压。通过内置的0.9V (±2.0%)参考电压和外部分压电阻RFB1和RFB2，输出电压可以在1.5V到30V范围内自由设定。由于使用了RSENSE来感应电流，可以使用陶瓷电容作为负载电容，有效减小了输出纹波和电路板面积。当处于待机模式（CE脚置低），所有电路被关断，芯片的消耗电流可降低至1.0μA或更小。该芯片的过流限制电路用于监测FB引脚的纹波电压，当纹波电压超过250mV，芯片就停止工作。当把CE脚重新置高或者重新上电后芯片就能恢复工作。
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产品概述 返回TOP
CXSU63157系列是PWM控制升压型控制器IC。由于最大占空比高达93%，该系列适用于高升压比应用，比如LCD面板和OELD。即使是高升压比，该系列依然能得到高效,稳定的电压。通过内置的0.9V (±2.0%)参考电压和外部分压电阻RFB1和RFB2，输出电压可以在1.5V到30V范围内自由设定。由于使用了RSENSE来感应电流，可以使用陶瓷电容作为负载电容，有效减小了输出纹波和电路板面积。当处于待机模式（CE脚置低），所有电路被关断，芯片的消耗电流可降低至1.0μA或更小。该芯片的过流限制电路用于监测FB引脚的纹波电压，当纹波电压超过250mV，芯片就停止工作。当把CE脚重新置高或者重新上电后芯片就能恢复工作。CXSU63157/CXSU63157/CXSU63157 Series are PWM, PWM/PFM auto/external switching controlled step-up DC/DC converter controller ICs. Since maximum duty ratio is as large as 93%, the series is the best for the applications used as high step-up ratios, such as the LCD panels and OLED. In this series, even if it is a high step-up ratio, the output voltage stabilized at high efficiency can be obtained. With 0.9V (±2.0%) of reference voltage supply internal, and using external resistors, RFB1 and 2, output voltage can be set up freely within a range of 1.5V to 30V. For a current sense, with the use of RSENSE, ceramic capacitors can be used as load capacitors and allows for lower output ripple and reduced PCB area requirements. Control automatically switches from PWM to PFM during light loads with the CXSU63157 series and the CXSU63158 series can switch the control from PWM to PFM using external signals depending on the circuit conditions.. During stand-by (when the CE pin is low), all circuits are shutdown to reduce current consumption to as low as 1.0μA or less. The overcurrent limit circuit of this IC is designed to monitor the ripple voltage of the FB pin and operates the IC to stop when the ripple voltage runs over 250mV. The IC resumes its operation with a toggle of the CE pin or by turning the power supply back on.
产品特点 返回TOP
应用范围 返回TOP
●Power Supply for the LCDs.
●Organic electroluminescence display (OELD)
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产品封装图 返回TOP
电路原理图 返回TOP
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升压型DC/DC转换器 |
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产品名称 |
特点 |
封装 |
控制 |
FET |
Synchr onous |
VIN MIN |
VIN MAX |
VOUT MIN |
VOUT MAX |
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 |
SOT-25 |
PWM |
None |
No |
0.9 |
10 |
1.5 |
6.5 |
- |
±2.5% |
100 |
20 |
|||
|
PWM/PFM |
SOT-25 |
PWM/PFM |
None |
No |
0.9 |
10 |
1.5 |
6.5 |
- |
±2.5% |
100 |
20 |
|||
|
PWM/PFM |
SOT89/SOT89-5 USP-6B |
PWM |
Nch |
No |
0.9 |
10 |
2 |
7 |
- |
±2.5% |
50 |
8.2 |
|||
|
PWM/PFM |
SOT89/SOT89-5 USP-6B |
PWM/PFM |
Nch |
No |
0.9 |
10 |
2 |
7 |
- |
±2.5% |
50 |
8.2 |
|||
|
PWM |
MSOP-8A |
None |
No |
2.5 |
20 |
2.2 |
30 |
- |
100~600 |
90 |
Auto |
||||
|
PWM/PFM |
SOT25/USP6B |
PWM |
None |
No |
0.9 |
10 |
1.5 |
30 |
- |
±2.0% |
100 |
20 |
|||
|
PWM/PFM |
SOT25/USP6B |
PWM/PFM |
None |
No |
0.9 |
10 |
1.5 |
30 |
- |
±2.0% |
100 |
20 |
|||
|
PWM/PFM |
SOT25/USP6B |
PWM/PFM 外部转换 |
None |
No |
0.9 |
10 |
1.5 |
30 |
- |
±2.0% |
100 |
20 |
|||
|
PWM/PFM |
SOT25/USP6B |
PWM |
None |
No |
0.9 |
10 |
1.5 |
30 |
- |
±2.0% |
100 |
16 |
|||
|
PWM/PFM |
SOT25/USP6B |
PWM/PFM |
None |
No |
0.9 |
10 |
1.5 |
30 |
- |
±2.0% |
100 |
16 |
|||
|
PFM |
SOT25/USP6C |
PFM |
Nch |
No |
0.9 |
10 |
1.5 |
7 |
- |
±2.5% |
100 |
1.9 |
|||
|
PFM |
SOT23/SOT25 SOT89/USP6C |
PFM |
Nch |
No |
0.9 |
10 |
1.5 |
7 |
- |
±2.5% |
100 |
1.9 |
|||
|
背光LED驱动 |
SOT25/USP6B |
PWM |
Nch |
No |
2.5 |
6 |
17.5 |
- |
±0.5% |
1000 |
325 |
50 |
|||
|
PWM |
SOT25/USP6C |
PWM |
Nch |
No |
2.5 |
6 |
19.5 |
- |
±2.0% |
1000 |
400 |
55 |
|||
|
PWM/PFM |
SOT25/USP6B |
PWM |
None |
No |
0.9 |
6 |
1.5 |
30 |
- |
±2.0% |
100 |
13 |
|||
|
PWM/PFM |
SOT25/USP6C |
PWM/PFM |
None |
No |
0.9 |
6 |
1.5 |
30 |
- |
±2.0% |
100 |
13 |
|||
|
PWM/PFM |
SOT25/USP6B |
PWM/PFM 外部转换 |
None |
No |
0.9 |
6 |
1.5 |
30 |
- |
±2.0% |
100 |
13 |
|||
|
内置1A驱动三极管 |
MSOP10/USP10B |
PWM/PFM 外部转换 |
Nch |
Yes |
0.8 |
6 |
1.8 |
5.3 |
1000 |
±10mV |
1200 |
1500 |
30 |
Auto |
|
|
内置1A驱动三极管 |
USP10B |
PWM/PFM 外部转换 |
Nch |
Yes |
0.8 |
6 |
1.8 |
5.3 |
1000 |
±10mV |
1200 |
1500 |
29 |
Auto |
|
|
附带负载切断功能 |
USP10B |
PWM,PWM/PFM |
Nch |
Yes |
0.65 |
5.5 |
1.8 |
5 |
1000 |
±10mV |
1200 |
1500 |
36 |
Auto |
|
|
白色LED驱动升压 |
SOT25 |
PWM |
PWM |
No |
2.5 |
6 |
2.5 |
17.5 |
- |
±5.0% |
1000 |
360 |
60 |
||
|
内置1A驱动三极管 |
USP10B |
PWM/PFM |
Nch |
Yes |
0.65 |
5.5 |
1.8 |
5 |
1000 |
±2.0% |
1200 |
1590 |
39 |
Latch |
|
|
内置1A驱动三极管 |
USP10B |
PWM/PFM |
Nch |
Yes |
0.65 |
5.5 |
1.8 |
5 |
1000 |
±2.0% |
1200 |
1590 |
39 |
Auto |
|
|
PFM控制、同步整流 |
SOT25 |
PFM |
Nch |
Yes |
0.9 |
5.5 |
1.8 |
5 |
- |
±2.0% |
1200 |
350 |
6.3 |
Yes |
|
|
附带负载切断功能 |
SOT25 USP6C WLP6-01 |
PWM |
Nch |
Yes |
0.65 |
6 |
1.8 |
5.5 |
800 |
±2.0% |
1200 |
1300 |
17,26 |
自动 闩锁 |
|
|
附带负载切断功能 |
SOT25/USP6C USPN4B02/WLP6-01 |
PWM/PFM |
Nch |
Yes |
0.65 |
6 |
1.8 |
5.5 |
800 |
±2.0% |
1200 |
1300 |
17,26 |
自动 闩锁 |
|
◀ 上一篇:PWM控制升压型控制器IC高效稳定的电压CXSU63156占空比高达93% LCD面板和OELD过流限制电路用于监测FB引脚的纹波电压
下一篇▶:升压DC/DC控制器CXSU63158PWM控制升压型控制器IC输出电压1.5V到30V消耗电流可降低至1.0μA占空比高达93%
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