The CXSD62109 is a single-phase, constant on-time, synchronous PWM controller with linear regulator, which drives N-channel MOSFETs. The CXSD62109 steps down high voltage to generate low-voltage chipset or RAM supplies in notebook computers. The CXSD62109 provides excellent transient response and accurate DC voltage output in either PFM or PWM Mode. In Pulse Frequency Mode (PFM), the CXSD62109 provides very high efficiency over light to heavy loads with loadingmodulated switching frequencies. In PWM Mode, the converter works nearly at constant frequency for low-noise requirements. The CXSD62109 is equipped with accurate positive current limit, output under-voltage, and output over-voltage protections, perfect for various applications. The PowerOn-Reset function monitors the voltage on VCC and PVCC to prevent wrong operation during power-on. The CXSD62109 has a 1.5ms digital soft start and built-in an integrated output discharge device for soft stop. An internal soft-start ramps up the output voltage with programmable slew rate to reduce the start-up current. A soft-stop function actively discharges the output capacitors.
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目录
7.相关产品
产品概述 返回TOP
The CXSD62109 is a single-phase, constant on-time, synchronous PWM controller with linear regulator, which drives N-channel MOSFETs. The CXSD62109 steps down high voltage to generate low-voltage chipset or RAM supplies in notebook computers. The CXSD62109 provides excellent transient response and accurate DC voltage output in either PFM or PWM Mode. In Pulse Frequency Mode (PFM), the CXSD62109 provides very high efficiency over light to heavy loads with loadingmodulated switching frequencies. In PWM Mode, the converter works nearly at constant frequency for low-noise requirements. The CXSD62109 is equipped with accurate positive current limit, output under-voltage, and output over-voltage protections, perfect for various applications. The PowerOn-Reset function monitors the voltage on VCC and PVCC to prevent wrong operation during power-on. The CXSD62109 has a 1.5ms digital soft start and built-in an integrated output discharge device for soft stop. An internal soft-start ramps up the output voltage with programmable slew rate to reduce the start-up current. A soft-stop function actively discharges the output capacitors. The integrated linear regulator could drive an external NChannel MOSFET and provides an adjustable output by using an external resistive divider. It is easy to be used because there is independent enable function and power OK indicator at linear regulator part. Moreover, linear regulator has soft start, under-voltage and overtemperature protection to become the great second output voltage of the CXSD62109 The ACXSD62109is available in 16pin TQFN packages respectively
产品特点 返回TOP
PWM Controller
· Adjustable Output Voltage from +0.75V to +3.3V
- 0.75V Reference Voltage
- ±1% Accuracy Over-Temperature
· Operates from An Input Battery Voltage Range of +3V to +28V
· Power-On-Reset Monitoring on VCC Pin and PVCC Pin to Avoid Wrong Sequence
· Excellent Line and Load Transient Responses
· PFM Mode for Increased Light Load Efficiency
· Programmable PWM Frequency from 100kHz to 500kHz
· Integrated MOSFET Drivers
· Integrated Bootstrap Forward P-CH MOSFET
· Integrated Soft-Start
· Selectable Forced PWM or Automatic PFM/PWM Mode
· Power Good Monitoring
· 70% Under-Voltage Protection
· 125% Over-Voltage Protection
· Adjustable Current-Limit Protection
- Using Sense Low-Side MOSFET’s RDS(ON)
· Over-Temperature Protection LDO Controller
· 0.75V Reference Voltage with 1.5% Accuracy Over Temperature
· Independent Enable and Power OK Function
· 50% Under-Voltage Protection
· Integrated Soft-Start Function
· TQFN-16 3x3 package
· Lead Free and Green Device Available (RoHS Compliant)
应用范围 返回TOP
· Notebook
· Table PC
· Hand-Held Portable
· AIO PC
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
相关芯片选择指南 返回TOP 更多同类产品......
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Switching Regulator > Buck Controller |
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Part_No |
Package |
Topology |
Archi tectu |
Phase |
No.of PWM Output |
Output Current (A) |
Input Voltage (V) |
Reference Voltage (V) |
Bias Voltage (V) |
Quiescent Current (uA) |
|
|
min |
max |
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|
SOP-14|QSOP-16 QFN4x4-16 |
Buck |
VM |
1 |
1 |
30 |
2.9 |
13.2 |
0.9 |
12 |
8000 |
|
|
SOP-8 |
Buck |
VM |
1 |
1 |
20 |
2.9 |
13.2 |
0.8 |
12 |
5000 |
|
|
SOP-8 |
Buck |
VM |
1 |
1 |
20 |
2.9 |
13.2 |
0.8 |
12 |
5000 |
|
|
QFN4x4-24 |
Multiphase |
VM |
2 |
1 |
60 |
3.1 |
13.2 |
0.6 |
12 |
5000 |
|
|
SOP-8 |
Buck |
VM |
1 |
1 |
20 |
2.2 |
13.2 |
0.8 |
5~12 |
2100 |
|
|
SOP-8 |
Buck |
VM |
1 |
1 |
20 |
2.2 |
13.2 |
0.8 |
5~12 |
2100 |
|
|
SOP8|TSSOP8 |
Buck |
VM |
1 |
1 |
5 |
5 |
13.2 |
1.25|0.8 |
5~12 |
3000 |
|
|
SOP-8 |
Buck |
VM |
1 |
1 |
10 |
3.3 |
5.5 |
0.8 |
5 |
2100 |
|
|
SOP-14 |
Buck |
VM |
1 |
1 |
10 |
5 |
13.2 |
0.8 |
12 |
2000 |
|
|
TSSOP-24 |QFN5x5-32 |
Buck |
VM |
1 |
2 |
20 |
5 |
13.2 |
0.6 |
5~12 |
4000 |
|
|
SOP14|QSOP16 |QFN-16 |
Buck |
VM |
1 |
1 |
30 |
2.9 |
13.2 |
0.9 |
12 |
4000 |
|
|
SOP-14 |
Buck |
VM |
1 |
1 |
30 |
2.2 |
13.2 |
0.6 |
12 |
5000 |
|
|
SOP-14 |
Buck |
VM |
1 |
1 |
30 |
2.2 |
13.2 |
0.6 |
12 |
5000 |
|
|
SOP-14 |
Buck |
VM |
1 |
1 |
25 |
2.2 |
13.2 |
0.8 |
12 |
5000 |
|
|
LQFP7x7 48 |TQFN7x7-48 |
Buck|Boost |Flyback |
VM |
1 |
6 |
0.015 |
1.4 |
6.5 |
- |
5 |
1800 |
|
|
TSSOP-24P |
Buck |
VM |
1 |
2 |
20 |
2.97 |
5.5 |
0.8 |
5~12 |
5000 |
|
|
SOP-14 |
Buck |
VM |
1 |
1 |
10 |
5 |
13.2 |
0.8 |
12 |
3000 |
|
|
SOP-8-P|DIP-8 |
Buck |
VM |
1 |
1 |
30 |
2.9 |
13.2 |
1.2 |
12 |
3000 |
|
|
SSOP28 QFN4x4-24 |
Buck |
VM |
1 |
2 |
20 |
5 |
24 |
0.9 |
5 |
1200 |
|
|
SOP-20 |
Buck |
VM |
1 |
2 |
20 |
2.2 |
13.2 |
0.6 |
5~12 |
4000 |
|
|
SOP8|DFN3x3-10 |
VM |
1 |
2 |
- |
- |
- |
- |
5~12 |
550 |
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|
DIP8|SOP-8 |
Buck|Boost |Flyback |Forward |
VM |
1 |
1 |
1 |
1.2 |
9 |
24 |
5 |
9 ~ 24 |
|
|
SSOP16|QFN4x4-16 |TQFN3x3-16 |
Buck |
VM |
1 |
1 |
25 |
3 |
25 |
0.6 |
5 |
1700 |
|
|
TDFN3x3-10 |
Buck |
COT |
1 |
1 |
25 |
3 |
25 |
0.5 |
5 |
350 |
|
|
QFN4x4-24 |
Buck |
CM |
2 |
1 |
40 |
4.5 |
13.2 |
0.6 |
5~12 |
4000 |
|
|
SOP8P|TDFN3x3-10 |
Buck |
VM |
1 |
1 |
20 |
3 |
13.2 |
0.8 |
5~12 |
2500 |
|
|
SOP8P |
Buck |
VM |
1 |
1 |
25 |
3 |
13.2 |
0.6|0.8 |
5~12 |
1200 |
|
|
TDFN3x3-10 |
Buck |
VM |
1 |
1 |
25 |
4 |
13.2 |
0.8 |
5~12 |
2000 |
|
|
TDFN3x3-10 |
Buck |
COT |
1 |
1 |
25 |
4.5 |
25 |
0.6 |
5~12 |
80 |
|
|
SOP-8P |
Buck |
VM |
1 |
1 |
25 |
4.5 |
13.2 |
0.8 |
5~12 |
16000 |
|
|
TQFN3x3-10 |
Buck |
VM |
1 |
1 |
25 |
4.5 |
13.2 |
0.6 |
5~12 |
2500 |
|
|
TDFN3x3-10 |
Buck |
COT |
1 |
1 |
30 |
3 |
25 |
0.8 |
5~12 |
2000 |
|
|
TQFN3x3-16 |
Buck |
COT |
1 |
1 |
30 |
1.8 |
28 |
0.6 |
5 |
600 |
|
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