The CXSD62178 integrates the step-down, constant on-time, synchronous PWM converter with 24W Nchannel high side MOSFET and 14W N-channel low side MOSFET, as well as various protections into a chip. The PWM converter step down high voltage of a battery to generate low-voltage, for NB applications. The CXSD62178 provides excellent transient response and accurate DC output voltage in automatic PFM/PWM Mode. In Pulse-Frequency Mode (PFM), the CXSD62178 provides very high efficiency over light to heavy loads with loadingmodulated switching frequencies. The PWM mode works nearly at constant frequency for low-noise requirements. The CXSD62178 is equipped with accurate sourcing current-limit, output under-voltage, output over-voltage protections, being perfect for NB applications. A 4.8ms (Typ.) soft-start can reduce the start-up current. A softstop function actively discharges the output capacitors by the discharge switch. The CXSD62178 has enable control for PWM. Pulling the EN pin low shuts down the PWM output
-
"
目录
7.相关产品
产品概述 返回TOP
CXSD62177 CXSD62177A CXSD62177B is a 3A synchronous buck converter with integrated 75mW high side and 55mW low side power MOSFETs. The CXSD62177 CXSD62177A CXSD62177B, design with a current-mode control scheme, can convert wide input voltage of 2.6V to 6V to the output voltage adjustable from 0.8V to 6V to provide excellent output voltage regulation. The CXSD62177 CXSD62177A CXSD62177B is equipped with an automatic PFM/PWM mode operation. At light load , the IC operates in the PFM mode to reduce the switching losses. At heavy load, the IC works in PWM mode. At PWM mode, the switching frequency is set by the external resistor. The CXSD62177 CXSD62177A CXSD62177B is also equipped with Power-on-reset, softstart, soft-stop, and whole protections (under-voltage, over-voltage, over-temperature and current-limit) into a single package. This device, available TDFN3x3-10, provides a very compact system solution external components and PCB area
产品特点 返回TOP
· High Efficiency up to 95%
· Adjustable Output Voltage from 0.8V to VVIN
· Integrated 75mW High Side / 55mW Low Side MOSFETs
· Low Dropout Operation: 100% Duty Cycle
· Mode Selection
- CXSD62177 CXSD62177A CXSD62177B : PFM/PWM mode
· Stable with Low ESR Ceramic Capacitors
· Power-On-Reset Detection on VCC and VIN
· Integrated Soft-Start and Soft-Stop
· Over-Temperature Protection
· Over-Voltage Protection
· Under-Voltage Protection
· High/ Low Side Current Limit
· Power Good Indication
· Enable/ShutdownFunction
· Current-M ode Operation with Internal Compensation
· Small TDFN3x3-10 Packages
· Lead Free and Green Devices Available (RoHS Compliant)
应用范围 返回TOP
· Notebook Computer & UMPC
· LCD Monitor/TV
· Set-Top Box
· DSL, Switch HUB
· Portable Instrument
技术规格书（产品PDF) 返回TOP
需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！
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.......
|
Switching Regulator > Buck Converter |
|||||||||||
|
Part_No |
Package |
Architectu |
No.of PWM Outpu |
Drive Lout (A) |
Vin(V) |
Fmax Khz |
Vref (V) |
R-Top (milohm) |
R-Sync (milohm) |
Iq (No load) (uA) |
|
|
min |
max |
||||||||||
|
TQFN5x6-28 |
CM |
1 |
5 |
4.5 |
26 |
380 |
0.8 |
50 |
20 |
1000 |
|
|
SOP-8 |
CM |
1 |
2 |
4.5 |
26 |
380 |
0.8 |
100 |
1000 |
||
|
SOP-8P |
CM |
1 |
4 |
4.5 |
26 |
380 |
0.8 |
80 |
1000 |
||
|
SOT23-5|TSOT23-5 |
CM |
1 |
1 |
2.7 |
6 |
1500 |
0.6 |
280 |
250 |
25 |
|
|
SOT23-5 |
CM |
1 |
1 |
2.7 |
6 |
1500 |
0.6 |
280 |
250 |
||
|
SOP-8 |
CM |
1 |
3 |
4.3 |
14 |
500 |
0.8 |
70 |
70 |
500 |
|
|
SOP-8P |
CM |
1 |
3 |
4.3 |
14 |
500 |
0.8 |
55 |
45 |
500 |
|
|
TDFN3x3-10 |
3 |
2.6 |
5.5 |
2000 |
0.8 |
110 |
110 |
460 |
|||
|
TDFN3x3-10 |
CM |
2 |
1 |
2.7 |
6 |
1500 |
0.6 |
280 |
250 |
500 |
|
|
TDFN3x3-10 |
CM |
2 |
1 |
2.7 |
6 |
1500 |
0.6 |
280 |
250 |
||
|
TDFN2x2-6 |
CM |
1 |
1 |
2.7 |
6 |
1500 |
0.6 |
280 |
250 |
25 |
|
|
TDFN2x2-6 |
CM |
1 |
1 |
2.7 |
6 |
1500 |
0.6 |
280 |
250 |
||
|
TDFN3x3-12 |
CM |
2 |
1 |
2.7 |
6 |
1500 |
0.6 |
280 |
250 |
25 |
|
|
TDFN3x3-12 |
CM |
2 |
1 |
2.7 |
6 |
1500 |
0.6 |
280 |
250 |
||
|
TDFN 3x3 12 |
CM |
2 |
1 |
3 |
5.5 |
1500 |
0.6 |
280 |
250 |
30 |
|
|
TQFN3x3-20 |
CM |
3 |
2 |
2.9 |
5.5 |
1500 |
0.6 |
- |
- |
300 |
|
|
TDFN2x2-8 |
CM |
1 |
1 |
3.3 |
8 |
1500 |
0.6 |
280 |
250 |
25 |
|
|
SOP-8 |
CM |
1 |
2 |
4.5 |
24 |
340 |
0.925 |
110 |
110 |
1900 |
|
|
SOP-8P |
CM |
1 |
3 |
4.5 |
24 |
340 |
0.925 |
110 |
110 |
1900 |
|
|
SOP-8 |
CM |
1 |
2 |
4.5 |
24 |
340 |
0.92 |
130 |
130 |
1900 |
|
|
SOP-8P |
CM |
1 |
2 |
4.5 |
24 |
340 |
0.92 |
130 |
130 |
1900 |
|
