CXSU63135是一种带集成LDO输入开关的高效步进DC-DC变换器，适用于双模应用。在电池模式运行期间，CXSU63135充当同步整流器和具有固定或可调输出电压的升压DC-DC转换器。当车辆识别号引脚检测到5伏输入电压时，CXSU63135切换到LDO操作模式，保持恒定的输出电压。
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产品概述 返回TOP
The CXSU63135 is a PWM/PFM, high-efficiency, and stepup DC-DC converter with an integrated LDO input switch for dual mode application. During battery mode operation, the CXSU63135 acts as synchronous rectifier and step-up DC-DC converter with a fixed or adjustable output voltage. When the VIN pin sense 5V input voltage, the CXSU63135 is switched to LDO operation mode, maintaining the constant output voltage. The input voltage ranges from 0.6 V to 4.5V for step-up DC-DC converter. The start-up is guaranteed at 1V and the device operates down to 0.6V. When the device is at LDO operating mode, the suitable output voltage 3.3V and loading current 500mA for maximum power consumption are guaranteed. The CXSU63135 is suited for dual mode and portable battery powered appliance with low-battery detector. In dualmode applications, the CXSU63135 draws power from any available 5V USB connection and reverts to battery power when the USB power is removed.
产品特点 返回TOP
· Built-In a 500mA LDO and Synchronous Step-Up DC-DC Converter
· Built-In PWM/PFM Operating Mode
· Provided Dual Input Power Sources
· Connect FB to OUT for 3.3V Output Voltage or GND for 2.5V Output Voltage or an External Resistor Divider for Adjustable Output Voltage.
· Fixed 300kHz Operating Frequency
· High Efficiency Up to 94% at 200mA Output Current
· 0.6V to 4.5V Operating Voltage
· 1V Start-Up Input Voltage
· Low Battery Voltage Detection
· Reverse Voltage Protection
· Internal Synchronous Rectifier
· Automatic Detection Input Voltage
· Compact SOP-8P and TSSOP-8 Packages
· Lead Free and Green Devices Available (RoHS Compliant)
应用范围 返回TOP
· Dual Mode Power System
· USB Peripheral
· Camcorders and Digital Camera
· Hand-Held Instrument · PDAs
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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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