CXSU63141是同步整流器、固定开关频率（典型为1MHz）和电流模式升压调节器。该设备允许使用小型电感和便携式设备的输出电容器。电流模式控制方案提供快速的瞬态响应和良好的输出电压精度在轻负载时，CXSU63141将自动进入脉冲频率调制（PFM）操作，以减少主开关损耗。
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产品概述 返回TOP
The CXSU63141 is a synchronous rectifier, fixed switching frequency (1MHz typical), and current-mode step-up regulator. The device allows use of small inductors and output capacitors for portable devices. The current-mode control scheme provides fast transient response and good output voltage accuracy
At light loads, the CXSU63141 will automatically enter in pulse frequency modulation(PFM) operation to reduce the dominant switching losses. During PFM operation, the IC consumes very low quiescent current and maintains high efficiency over the complete load range. The device has a 1.05V start-up voltage and can operate with input voltage down to 0.8V after start-up The CXSU63141 also includes current-limit and over-temperature shutdown to prevent damage in the event of an output overload. The CXSU63141 is available in 2mmx2mm TDFN2x2-8 and TSOT-23-6A packages.
产品特点 返回TOP
· Wide 0.8V to VOUT Input Voltage Range
· Low 1.05V (typical) Start-Up Voltage
· Low 40mA No Load Bias Current
· 100mA Output from a Single AA Cell Input
· 250mA Output from a Dual AA Cell Input
· Internal Synchronous Rectifier
· Up to 92% Efficiency
·<1mA Quiescent Current during Shutdown
· Current-Mode Operation with Internal Compensation
- Stable with Ceramic Output Capacitors
- Fast Line Transient Response
· Fixed 1MHz Oscillator Frequency
· 1.2A Current-Limit Protection
· Built-In Soft-Start
· Over-Temperature Protection with Hysteresis
· Available in a 2mmx2mm TDFN2x2-8 and TSOT- 23-6A Packages
· Halogen and Lead Free Available (RoHS Compliant)
应用范围 返回TOP
· Cell Phone and Smart Phone
· PDA, PMP, and MP3
· Digital Camera
· Boost Regulator
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Switching Regulator > Boost Converter |
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Part_No |
Package |
Archi-tecture |
Input Voltage |
Max Adj. Output Voltage |
Switch Current Limit (max) |
Fixed Output Voltage |
Switching Frequency |
Internal Power Switch |
Sync. Rectifier |
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|
min |
max |
min |
max |
(A) |
(V) |
(kHz) |
|||||
|
SOT89 |
VM |
0.9 |
5.5 |
2.5 |
5.5 |
0.5 |
1.8|2.6|2.8|3 |3.3|3.8|4.5|5 |
- |
No |
Yes |
|
|
MSOP8|TSSOP8 |SOP8 |
VM |
2.5 |
5.5 |
2.5 |
- |
- |
- |
200 ~ 1000 |
No |
No |
|
|
TSSOP8|SOP-8P |
VM |
1 |
5.5 |
2.5 |
5 |
1 |
2.5|3.3 |
300 |
Yes |
Yes |
|
|
SOP8 |
CM |
3 |
40 |
1.25 |
40 |
1.5 |
- |
33 ~ 100 |
Yes |
No |
|
|
TQFN5x5-32 |
CM |
2.5 |
6.5 |
2.5 |
18 |
3 |
No |
1200 |
Yes |
No |
|
|
TSOT23-5 TDFN2x2-6 |
CM |
2.5 |
6 |
2.5 |
20 |
2 |
- |
1500 |
Yes |
No |
|
|
TQFN4x4-6 TDFN3x3-12 |
CM |
1.8 |
5.5 |
2.7 |
5.5 |
5 |
- |
1.2 |
Yes |
Yes |
|
|
SOT23-5 |
CM |
2.5 |
6 |
2.5 |
32 |
1 |
- |
1000 |
Yes |
No |
|
|
TSOT-23-6 TDFN2x2-8 |
CM |
1.2 |
5.5 |
1.8 |
5.5 |
1.2 |
- |
1.2 |
Yes |
Yes |
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下一篇▶:PWM/PFM切换升压DC/DC控制器CXSU63142开关频率高达300kHz高效率
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