The CXSD62551 CXSD62551A operates over a wide input voltage range from 4V to 23V. The DC-DC regulator adopts the instant PWM architecture to achieve fast transient responses for high step down applications and high efficiency at light loads. In addition, it operates at pseudo-constant frequency of 500kHz under heavy load conditions to minimize the size of inductor and capacitor. CXSD62551 CXSD62551A is optimized for lower than 2.5VOUTapplication,The CXSD62551 CXSD62551A develops a high efficiency synchronous step-down DC-DC regulator capable of delivering 8A continuous, 16A peak current. The device integrates main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss. CXSD62551 CXSD62551A also integrates a bypass switch which allows the IC to be powered by external DC source.
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目录
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产品概述 返回TOP
The CXSD62551 CXSD62551A operates over a wide input voltage range from 4V to 23V. The DC-DC regulator adopts the instant PWM architecture to achieve fast transient responses for high step down applications and high efficiency at light loads. In addition, it operates at pseudo-constant frequency of 500kHz under heavy load conditions to minimize the size of inductor and capacitor. CXSD62551 CXSD62551A is optimized for lower than 2.5VOUTapplication,The CXSD62551 CXSD62551A develops a high efficiency synchronous step-down DC-DC regulator capable of delivering 8A continuous, 16A peak current. The device integrates main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss. CXSD62551 CXSD62551A also integrates a bypass switch which allows the IC to be powered by external DC source.
产品特点 返回TOP
· Low RDS(ON) for Internal Switches (Top/Bottom): 30/10mΩ
· Wide Input Voltage Range: 4-23V
· Output Voltage Range: 0.6~2.5V
· External Bypass Input
· Instant PWM Architecture to Achieve Fast Transient Responses
· Internal 400us Soft-Start Limits the Inrush Current
· Pseudo-Constant Frequency: 500kHz.
· 8A Continuous/16A Peak Output Current Capability
· ±1.0% 0.6V Reference
· Programmable Valley Current Limit
· Power Good Indicator
· Output Discharge Function
· Short Circuit Latch Off Protection
· Over Voltage Latch Off Protection
· Thermal Shutdown
· Input UVLO
· Rohs Compliant and Halogen Free
· Compact Package: QFN3x3-20
应用范围 返回TOP
· LCD-TV/Net-TV/3DTV
· Set Top Box
· Notebook
· High Power AP
技术规格书（产品PDF) 返回TOP
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产品封装图 返回TOP
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电路原理图 返回TOP
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Single Output Step Down Regulator (Integrated Switch) |
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|
Number |
Vin (min) (V) |
Vin (max) V |
UVLO (V) |
Iout (max) (A) |
Vout (min) (V) |
Out. Voltage Acurracy |
Quiescent Current Typ (uA) |
Shutdown Current (uA) |
MOSFET (Ron H) (mΩ) |
MOSFET (Ron L) (mΩ) |
|
2.5 |
5.5 |
2.5 |
3.5 |
0.6 |
±1.5% |
18 |
0.1 |
55 |
35 |
|
|
2.5 |
5.5 |
2.5 |
1 |
0.6 |
±2% |
40 |
0.1 |
260 |
170 |
|
|
2.5 |
5.5 |
2.4 |
1.2 |
0.6 |
±1.5% |
50 |
0.1 |
200 |
150 |
|
|
2.5 |
5.5 |
2.4 |
0.6 |
0.6 |
±1.5% |
50 |
0.1 |
300 |
200 |
|
|
2.5 |
5.5 |
2.5 |
1 |
0.6 |
±1.5% |
50 |
0.1 |
200 |
150 |
|
|
2.5 |
5.5 |
2.5 |
1 |
0.6 |
±1.5% |
50 |
0.1 |
200 |
150 |
|
|
2.5 |
5.5 |
2.5 |
1 |
3.3 |
±1.5% |
50 |
0.1 |
200 |
150 |
|
|
2.5 |
5.5 |
2.5 |
1.5 |
0.6 |
±1.5% |
50 |
0.1 |
180 |
120 |
|
|
2.5 |
5.5 |
2.5 |
1.5 |
0.6 |
±1.5% |
50 |
0.1 |
180 |
120 |
|
|
2.5 |
5.5 |
2.5 |
1 |
0.6 |
±2% |
40 |
0.1 |
230 |
150 |
|
|
2.5 |
5.5 |
2.5 |
1 |
0.6 |
±2% |
60 |
0.1 |
260 |
170 |
|
|
2.5 |
5.5 |
2.5 |
1 |
0.6 |
±2% |
60 |
0.1 |
260 |
170 |
|
|
2.5 |
5.5 |
2.5 |
1 |
0.6 |
±2% |
60 |
0.1 |
260 |
170 |
|
|
2.5 |
5.5 |
2.5 |
1.5 |
0.6 |
±2% |
90 |
0.1 |
180 |
120 |
|
|
2.5 |
5.5 |
2.5 |
1 |
0.6 |
±2% |
90 |
0.1 |
250 |
200 |
|
|
2.5 |
5.5 |
2.5 |
1 |
0.6 |
±2% |
40 |
0.1 |
260 |
170 |
|
|
2.5 |
6.5 |
2.5 |
1 |
0.6 |
±2% |
40 |
0.1 |
260 |
170 |
|
|
2.5 |
6.5 |
2.5 |
1 |
0.6 |
±2% |
40 |
0.1 |
260 |
170 |
|
|
2.5 |
5.5 |
2.5 |
1 |
0.6 |
±2% |
40 |
0.1 |
270 |
160 |
|
|
2.5 |
5.5 |
2.5 |
1 |
0.6 |
±2% |
40 |
0.1 |
230 |
150 |
|
|
2.7 |
5.5 |
2.5 |
3 |
0.6 |
±2% |
55 |
0.1 |
110 |
80 |
|
|
2.7 |
5.5 |
2.5 |
3 |
0.6 |
±2% |
55 |
0.1 |
110 |
80 |
|
|
2.7 |
5.5 |
2.65 |
3 |
0.6 |
±2% |
55 |
0.1 |
100 |
80 |
|
|
2.7 |
5.5 |
2.65 |
3 |
0.6 |
±2% |
55 |
0.1 |
110 |
80 |
|
|
2.5 |
5.5 |
2.5 |
1.5 |
0.6 |
±2% |
60 |
0.1 |
210 |
130 |
|
|
2.7 |
5.5 |
2.65 |
2 |
0.6 |
±2% |
55 |
0.1 |
110 |
80 |
|
|
2.7 |
5.5 |
2.65 |
2 |
0.6 |
±2% |
55 |
0.1 |
120 |
90 |
|
|
2.7 |
5.5 |
2.65 |
2 |
0.6 |
±2% |
55 |
0.1 |
110 |
80 |
|
|
2.7 |
5.5 |
2.65 |
2 |
0.6 |
±2% |
55 |
0.1 |
110 |
80 |
|
|
2.7 |
5.5 |
2.65 |
2 |
0.6 |
±2% |
55 |
0.1 |
110 |
80 |
|
