The CXSD62328 is a high efficiency monolithic synchronous step-down regulator using 1.5MHz constant frequency, current mode architecture. The device is available in an adjustable version and fixed output voltages of 1.2V, 1.8V and 3.3V. It is ideal for portable equipment requiring very high current up to 2A from single-cell Lithium-ion batteries.
The CXSD62328 also can run at 100% duty cycle for low dropout operation, extending battery life in portable systems while light load operation provides very low output ripple for noise sensitive applications. It can supply up to 2A output load current from a 2.5V to 5.5V input voltage and the output voltage can be regulated as low as 0.6V. The high switching frequency (1.5MHz) minimizes the size of external components while keeping switching losses low. The internal slope compensation setting allows the device to operate with smaller inductor values to optimize size and provide efficient operation.
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目录
7.相关产品
产品概述 返回TOP
The CXSD62328 is a high efficiency monolithic synchronous step-down regulator using 1.5MHz constant frequency, current mode architecture. The device is available in an adjustable version and fixed output voltages of 1.2V, 1.8V and 3.3V. It is ideal for portable equipment requiring very high current up to 2A from single-cell Lithium-ion batteries.
The CXSD62328 also can run at 100% duty cycle for low dropout operation, extending battery life in portable systems while light load operation provides very low output ripple for noise sensitive applications. It can supply up to 2A output load current from a 2.5V to 5.5V input voltage and the output voltage can be regulated as low as 0.6V. The high switching frequency (1.5MHz) minimizes the size of external components while keeping switching losses low. The internal slope compensation setting allows the device to operate with smaller inductor values to optimize size and provide efficient operation.
The CXSD62328 is available in Green TDFN-3×3-10L package and is rated over the -40℃ to +85℃ temperature range.
产品特点 返回TOP
• Forced Continuous PWM Mode Operation
• High Efficiency: Up to 95%
• 2.5V to 5.5V Input Voltage Range
• 1.5MHz Constant Frequency Operation
• 2A Output Current
• 1.2V, 1.8V and 3.3V Fixed and Adjustable
Output Voltages
• 100% Duty Cycle for Lowest Dropout
• ≤ 1μA Shutdown Current
• 0.6V Reference Allows Low Output Voltages
• Low RDS(ON) Internal Switches: 0.135Ω
• Allows Use of Ceramic Capacitors
• Current Mode Control for Excellent Line and
Load Transient Response
• Internal Soft-Start
• Short Circuit and Thermal Protection
• -40℃ to +85℃ Operating Temperature Range
• Available in Green TDFN-3×3-10L Package
应用范围 返回TOP
PDA, Pocket PC and Smart Phones
USB Powered Modems
CPUs and DSPs
PC Cards and Notebooks
Cellular Phones
Digital Cameras
DSP Core Supplies
Portable Instruments
技术规格书（产品PDF) 返回TOP
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产品封装图 返回TOP
电路原理图 返回TOP
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同步整流降压转换器 |
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Product |
CH |
Enable |
VCC (Min)V |
VCC (Max)V |
VOUT(V) |
IOUT(mA) |
Frequency (kHz) |
Iq (mA) |
SHDN Iq(μA) |
Package |
|
1 |
L |
3 |
5.5 |
adj |
3000 |
adj(300 to 2000) |
0.41 |
2 |
TDFN-3x3-10L |
|
|
1 |
H |
2.5 |
5.5 |
3.3/adj |
2000 |
1400 |
0.3 |
2 |
TDFN-3x3-10L |
|
|
1 |
H |
2.5 |
5.5 |
1.2/1.8/3.3/adj |
800 |
1600 |
0.03 |
1 |
TSOT-23-5 |
|
|
1 |
H |
2.5 |
5.5 |
1.2/1.8/3.3/adj |
800 |
1600 |
0.03 |
1 |
TSOT-23-5 TDFN-2x2-6L |
|
|
1 |
H |
2.5 |
5.5 |
1.2/1.8/3.3/adj |
2000 |
1400 |
0.055 |
2 |
TDFN-3x3-10L |
|
|
1 |
H |
2.7 |
5.5 |
adj |
1200 |
1600 |
0.03 |
1 |
TDFN-3x3-10L |
|
|
1 |
H |
2.7 |
5.5 |
adj |
1200 |
1600 |
0.03 |
1 |
TDFN-2x3-8L |
|
|
1 |
H |
2.5 |
5.5 |
adj |
600 |
6000 |
0.022 |
1 |
TDFN-2x2-6L |
|
|
1 |
H |
2.5 |
5.5 |
0.6/0.8/1.0/1.1/1.15 /1.2/1.5/1.6/1.8/2.5/ 2.8/3.0/3.3 |
600 |
6000 |
0.022 |
1 |
TDFN-2x2-6L WLCSP-1.21x0.81-6B |
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非同步降压转换器 |
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|
Product |
CH |
Enable |
VCC (Min)V |
VCC MAX(V) |
VOUT(V) |
IOUT(mA) |
Frequency (kHz) |
Iq (mA) |
SHDN Iq(μA) |
Package |
|
1 |
H |
4.5 |
28.5 |
adj |
3000 |
385 |
0.8 |
18 |
SOIC-8(EP) |
|
|
1 |
H |
4.5 |
28.5 |
adj |
3000 |
1400 |
0.8 |
18 |
SOIC-8(EP) |
|
|
1 |
H |
4.5 |
38 |
adj |
2000 |
385 |
0.8 |
18 |
SOIC-8(EP) |
|
|
1 |
H |
4.5 |
38 |
adj |
2000 |
1400 |
0.8 |
18 |
SOIC-8(EP) |
|
|
1 |
H |
4.5 |
18 |
adj |
3000 |
1400 |
0.8 |
18 |
SOIC-8(EP) |
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