The CXSU63162 series is a fixed frequency, constant current step-up DC/DC converter which is optimized
for LED backlight, applications in mobile phones, PDAs and digital cameras. Output voltage of up to 17.5V is
possible so that four white LEDs,can be driven in series. Since the LED current is set by only one external
resisto.all white LEDs placed in series can be turned,on at the same time. The new DC/DC Converter is also
able to drive a network of two parallel banks of three LEDs. LED dimming is controlled by adjusting the duty
cycle of a PWM signal (10kHz Max.) applied to the CE pin.Efficiency is high with a 0.2V low feedback
reference voltage ensuring the RLED losses are minimal. In addition, an internal,MOSFET with a low RDSON
of 2.4Ω is used. A low profile and small board area solution can be achieved using a chip inductor,and a small
ceramic output capacitor CL=0.22μF as a result of the high 1MHz switching frequency.
If white LEDs are opened or damaged, the detector built in the Lx pin causes the IC to stop oscillating, preventing
eexessive,increase of the output voltage.
-
"
目录
1.产品概述 2.产品特点 3.应用范围 4.技术规格书下载（产品PDF文档）
5.产品封装图 6.电路原理图 7.功能概述 8.相关产品
一,产品概述(General Description)
CXSU63162系列是点亮用于手机,PDA,数码相机等背景灯的白色LED时，提供最佳定值电流的输出升压DC/DC转换器IC。因为输出电压能达到17.5V，最多能驱动串联连接的四个白色LED。由于串联连接只需１个外部电阻即可设定LED的电流，能使全部白色LED均匀地点亮。此外，３个串联２个并联连接最多能驱动６个LED。给CE端子施加PWM信号(最大10kHz)，用PWM信号的占空比能控制LED的亮度。基准电压低达0.2V，小RLED使得损耗也很小。此外，由于内置了2.4Ω的MOSFET能实现高效率的工作状态。振荡频率高达1.0MHz,能使用薄片线圈等小型薄型元件。输出电容CL能使用0.22μF的超小型陶瓷电容，有利于降低实装面积和周围元件的成本。万一白色LED开路或破损时，根据Lx端子中的内置检测器,停止IC发振以防止输出电压过度上升。
The CXSU63162 series is a fixed frequency, constant current step-up DC/DC converter which is optimized
for LED backlight, applications in mobile phones, PDAs and digital cameras. Output voltage of up to 17.5V is
possible so that four white LEDs,can be driven in series. Since the LED current is set by only one external
resisto.all white LEDs placed in series can be turned,on at the same time. The new DC/DC Converter is also
able to drive a network of two parallel banks of three LEDs. LED dimming is controlled by adjusting the duty
cycle of a PWM signal (10kHz Max.) applied to the CE pin.Efficiency is high with a 0.2V low feedback
reference voltage ensuring the RLED losses are minimal. In addition, an internal,MOSFET with a low RDSON
of 2.4Ω is used. A low profile and small board area solution can be achieved using a chip inductor,and a small
ceramic output capacitor CL=0.22μF as a result of the high 1MHz switching frequency.
If white LEDs are opened or damaged, the detector built in the Lx pin causes the IC to stop oscillating, preventing
eexessive,increase of the output voltage.
二.产品特点(Features)
三,应用范围 (Applications)
●For White LED drivers
●Smart phones / Mobile phones
●Mobile devices / terminals
●Digital still cameras
四.技术规格书下载（产品PDF）
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！
五,产品封装图 (Package)
六.电路原理图
七,功能概述
|
PARAMETER |
SYMBOL |
RATINGS |
UNITS |
|
VIN Pin Voltage |
VIN |
VSS – 0.3 ~ 7.0 |
V |
|
Lx Pin Voltage |
VLx |
VSS – 0.3 ~ 22.0 |
V |
|
FB Pin Voltage |
VFB |
VSS – 0.3 ~ 7.0 |
V |
|
CE Pin Voltage |
VCE |
VSS – 0.3 ~ 7.0 |
V |
|
Lx Pin Current |
ILx |
1000 |
mA |
|
Power Dissipation |
Pd |
250 |
mW |
|
Operating Ambient Temperature |
Topr |
- 40 ~ + 85 |
℃ |
|
Storage Temperature |
Tstg |
- 55 ~ +125 |
℃ |
八,相关芯片选择指南 更多同类产品......
|
升压型DC/DC转换器 |
|||||||||||||||
|
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 |
||||||||||
|
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 |
|
