CXSD62116A|B|C电压模式固定300kHz开关频率和同步降压控制器两个电源电压模式

目录2Hq嘉泰姆

1.产品概述         2.产品特点2Hq嘉泰姆
3.应用范围       4.下载产品资料PDF文档 2Hq嘉泰姆
5.产品封装图                     6.电路原理图             2Hq嘉泰姆
7.功能概述       8.相关产品2Hq嘉泰姆

一,产品概述(General Description) 2Hq嘉泰姆
The CXSD62116A/B/C is a voltage mode, fixed 300kHz-switching frequency,2Hq嘉泰姆
and synchronous buck controller. The CXSD62116A/B/C allows wide input voltage2Hq嘉泰姆
that is either a single 5~12V or two supply voltage(s) for various applications.2Hq嘉泰姆
A power-on-reset (POR) circuit monitors the VCC supply voltage to prevent2Hq嘉泰姆
wrong logic controls. A built-in digital soft-start circuit prevents the output2Hq嘉泰姆
voltages from overshoot as well as limits the input current. An internal2Hq嘉泰姆
0.6V temperature-compensated reference voltage with high accuracy is2Hq嘉泰姆
designed to meet the requirement of low output voltage applications.2Hq嘉泰姆
The CXSD62116A/B/C provides excellent output voltage regulations against2Hq嘉泰姆
load current variation.2Hq嘉泰姆
The controller’s over-current protection monitors the output current2Hq嘉泰姆
by using the voltage drops across the RDS(ON)of low-side MOSFET,2Hq嘉泰姆
eliminating the need for a current sensing resistor that features high2Hq嘉泰姆
efficiency and low cost.2Hq嘉泰姆
The CXSD62116A/B/C also integrates over-voltage protection (OVP) and2Hq嘉泰姆
under-voltage protection circuit which moni-tors the FB voltage to prevent2Hq嘉泰姆
the PWM output from over and under voltage.2Hq嘉泰姆
The CXSD62116A/B/C is available in a simple SOP-8P package.2Hq嘉泰姆
二.产品特点(Features)2Hq嘉泰姆
Wide Operation Supply Voltage from 5V to 12V2Hq嘉泰姆
Power-On-Reset Monitoring on VCC 2Hq嘉泰姆
Excellent Reference Voltage Regulations2Hq嘉泰姆
- 0.6V Internal Reference2Hq嘉泰姆
- ±1% Over Temperature Range2Hq嘉泰姆
Integrated Soft-Start2Hq嘉泰姆
Automatic PSM/PWM Modes2Hq嘉泰姆
Voltage Mode PWM Operation with 90% (Max.) Duty Cycle2Hq嘉泰姆
Under-Voltage Protection2Hq嘉泰姆
Adjustable Over-Current Protection Threshold2Hq嘉泰姆
- Sensing the RDS(ON) of Low-Side MOSFET2Hq嘉泰姆
Over-Voltage Protection2Hq嘉泰姆
Under-Voltage Protection2Hq嘉泰姆
Simple SOP-8P Package2Hq嘉泰姆
Lead Free and Green Devices Available2Hq嘉泰姆
(RoHS Compliant)2Hq嘉泰姆
三,应用范围 (Applications)2Hq嘉泰姆
Graphic Cards2Hq嘉泰姆
DSL, Switch HUB2Hq嘉泰姆
Wireless Lan2Hq嘉泰姆
Notebook Computer2Hq嘉泰姆
Mother Board2Hq嘉泰姆
LCD Monitor/TV2Hq嘉泰姆

四.下载产品资料PDF文档 2Hq嘉泰姆

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！2Hq嘉泰姆

QQ截图20160419174301.jpg 2Hq嘉泰姆

五,产品封装图 (Package)2Hq嘉泰姆
2Hq嘉泰姆
六.电路原理图2Hq嘉泰姆

2Hq嘉泰姆
七,功能概述2Hq嘉泰姆
Layout Consideration2Hq嘉泰姆
In any high switching frequency converter, a correct lay-out is important to ensure proper operation of the2Hq嘉泰姆
regulator. With power devices switching at 300kHz,the resulting current transient will cause voltage spike across2Hq嘉泰姆
the interconnecting impedance and parasitic circuit elements. As an example, consider the turn-off transition2Hq嘉泰姆
of the PWM MOSFET. Before turn-off, the MOSFET is car rying the full load current. During turn-off, current stops2Hq嘉泰姆
flowing in the MOSFET and is free-wheeling by the lower MOSFET and parasitic diode. Any parasitic inductance of2Hq嘉泰姆
the circuit generates a large voltage spike during the switching interval. In general, using short and wide printed2Hq嘉泰姆
circuit traces should minimize interconnecting imped-2Hq嘉泰姆

Layout Consideration (Cont.)2Hq嘉泰姆
ances and the magnitude of voltage spike. And signal and power grounds are to be kept separate till combined2Hq嘉泰姆

using ground plane construction or single point grounding. Figure 8. illustrates the layout, with bold lines2Hq嘉泰姆
indicating high current paths; these traces must be short and wide. Components along the bold lines should be2Hq嘉泰姆

placed lose together. Below is a checklist for your layout:2Hq嘉泰姆

- Keep the switching nodes (UGATE, LGATE, and PHASE) away from sensitive small signal nodes since these2Hq嘉泰姆

nodes are fast moving signals. Therefore, keep traces to these nodes as short as possible.2Hq嘉泰姆

- The traces from the gate drivers to the MOSFETs (UG and LG) should be short and wide.2Hq嘉泰姆

- Place the source of the high-side MOSFET and the drain of the low-side MOSFET as close as possible. Minimiz-2Hq嘉泰姆
ing the impedance with wide layout plane between the two pads reduces the voltage bounce of the node.2Hq嘉泰姆
- Decoupling capacitor, compensation component, the resistor dividers, and boot capacitors should be close2Hq嘉泰姆
their pins. (For example, place the decoupling ceramic capacitor near the drain of the high-side MOSFET as2Hq嘉泰姆
close as possible. The bulk capacitors are also placed near the drain).2Hq嘉泰姆
- The input capacitor should be near the drain of the up-per MOSFET; the output capacitor should be near the2Hq嘉泰姆
loads. The input capacitor GND should be close to the output capacitor GND and the lower MOSFET GND.2Hq嘉泰姆
- The drain of the MOSFETs (VIN and PHASE nodes) should be a large plane for heat sinking.2Hq嘉泰姆
- The ROCSET resistance should be placed near the IC as close as possible.Close to IC2Hq嘉泰姆
Figure 8. Layout Guidelines2Hq嘉泰姆

八,相关产品 更多同类产品...... 2Hq嘉泰姆

Switching Regulator > Buck Controller2Hq嘉泰姆
Part_No 2Hq嘉泰姆	Package 2Hq嘉泰姆	Archi2Hq嘉泰姆 tectu2Hq嘉泰姆	Phase2Hq嘉泰姆	No.of2Hq嘉泰姆 PWM2Hq嘉泰姆 Output2Hq嘉泰姆	Output 2Hq嘉泰姆 Current2Hq嘉泰姆 (A) 2Hq嘉泰姆	Input2Hq嘉泰姆 Voltage (V) 2Hq嘉泰姆		Reference2Hq嘉泰姆 Voltage2Hq嘉泰姆 (V) 2Hq嘉泰姆	Bias 2Hq嘉泰姆 Voltage2Hq嘉泰姆 (V) 2Hq嘉泰姆	Quiescent2Hq嘉泰姆 Current2Hq嘉泰姆 (uA) 2Hq嘉泰姆
Part_No 2Hq嘉泰姆	Package 2Hq嘉泰姆	Archi2Hq嘉泰姆 tectu2Hq嘉泰姆	Phase2Hq嘉泰姆	No.of2Hq嘉泰姆 PWM2Hq嘉泰姆 Output2Hq嘉泰姆	Output 2Hq嘉泰姆 Current2Hq嘉泰姆 (A) 2Hq嘉泰姆	min2Hq嘉泰姆	max2Hq嘉泰姆	Reference2Hq嘉泰姆 Voltage2Hq嘉泰姆 (V) 2Hq嘉泰姆	Bias 2Hq嘉泰姆 Voltage2Hq嘉泰姆 (V) 2Hq嘉泰姆	Quiescent2Hq嘉泰姆 Current2Hq嘉泰姆 (uA) 2Hq嘉泰姆
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CXSD62742Hq嘉泰姆	SOP-82Hq嘉泰姆	VM 2Hq嘉泰姆	12Hq嘉泰姆	12Hq嘉泰姆	202Hq嘉泰姆	2.9 2Hq嘉泰姆	13.2 2Hq嘉泰姆	0.82Hq嘉泰姆	122Hq嘉泰姆	50002Hq嘉泰姆
CXSD6274C2Hq嘉泰姆	SOP-82Hq嘉泰姆	VM2Hq嘉泰姆	12Hq嘉泰姆	12Hq嘉泰姆	202Hq嘉泰姆	2.92Hq嘉泰姆	13.22Hq嘉泰姆	0.82Hq嘉泰姆	122Hq嘉泰姆	50002Hq嘉泰姆
CXSD62752Hq嘉泰姆	QFN4x4-242Hq嘉泰姆	VM2Hq嘉泰姆	22Hq嘉泰姆	12Hq嘉泰姆	602Hq嘉泰姆	3.12Hq嘉泰姆	13.22Hq嘉泰姆	0.62Hq嘉泰姆	122Hq嘉泰姆	50002Hq嘉泰姆
CXSD62762Hq嘉泰姆	SOP-82Hq嘉泰姆	VM2Hq嘉泰姆	12Hq嘉泰姆	12Hq嘉泰姆	202Hq嘉泰姆	2.22Hq嘉泰姆	13.22Hq嘉泰姆	0.82Hq嘉泰姆	5~122Hq嘉泰姆	21002Hq嘉泰姆
CXSD6276A2Hq嘉泰姆	SOP-82Hq嘉泰姆	VM2Hq嘉泰姆	12Hq嘉泰姆	12Hq嘉泰姆	202Hq嘉泰姆	2.22Hq嘉泰姆	13.22Hq嘉泰姆	0.82Hq嘉泰姆	5~122Hq嘉泰姆	21002Hq嘉泰姆
CXSD6277/A/B2Hq嘉泰姆	SOP8\|TSSOP82Hq嘉泰姆	VM2Hq嘉泰姆	12Hq嘉泰姆	12Hq嘉泰姆	52Hq嘉泰姆	52Hq嘉泰姆	13.22Hq嘉泰姆	1.25\|0.82Hq嘉泰姆	5~122Hq嘉泰姆	30002Hq嘉泰姆
CXSD62782Hq嘉泰姆	SOP-82Hq嘉泰姆	VM2Hq嘉泰姆	12Hq嘉泰姆	12Hq嘉泰姆	102Hq嘉泰姆	3.32Hq嘉泰姆	5.52Hq嘉泰姆	0.82Hq嘉泰姆	52Hq嘉泰姆	21002Hq嘉泰姆
CXSD6279B2Hq嘉泰姆	SOP-142Hq嘉泰姆	VM 2Hq嘉泰姆	12Hq嘉泰姆	12Hq嘉泰姆	102Hq嘉泰姆	52Hq嘉泰姆	13.22Hq嘉泰姆	0.82Hq嘉泰姆	122Hq嘉泰姆	20002Hq嘉泰姆
CXSD62802Hq嘉泰姆	TSSOP-242Hq嘉泰姆 \|QFN5x5-322Hq嘉泰姆	VM2Hq嘉泰姆	12Hq嘉泰姆	22Hq嘉泰姆	202Hq嘉泰姆	52Hq嘉泰姆	13.22Hq嘉泰姆	0.62Hq嘉泰姆	5~122Hq嘉泰姆	40002Hq嘉泰姆
CXSD6281N2Hq嘉泰姆	SOP142Hq嘉泰姆 QSOP162Hq嘉泰姆 QFN-162Hq嘉泰姆	VM2Hq嘉泰姆	12Hq嘉泰姆	12Hq嘉泰姆	302Hq嘉泰姆	2.92Hq嘉泰姆	13.22Hq嘉泰姆	0.92Hq嘉泰姆	122Hq嘉泰姆	40002Hq嘉泰姆
CXSD62822Hq嘉泰姆	SOP-142Hq嘉泰姆	VM2Hq嘉泰姆	12Hq嘉泰姆	12Hq嘉泰姆	302Hq嘉泰姆	2.22Hq嘉泰姆	13.22Hq嘉泰姆	0.62Hq嘉泰姆	122Hq嘉泰姆	50002Hq嘉泰姆
CXSD6282A2Hq嘉泰姆	SOP-142Hq嘉泰姆	VM2Hq嘉泰姆	12Hq嘉泰姆	12Hq嘉泰姆	302Hq嘉泰姆	2.22Hq嘉泰姆	13.22Hq嘉泰姆	0.62Hq嘉泰姆	122Hq嘉泰姆	50002Hq嘉泰姆
CXSD62832Hq嘉泰姆	SOP-142Hq嘉泰姆	VM2Hq嘉泰姆	12Hq嘉泰姆	12Hq嘉泰姆	252Hq嘉泰姆	2.22Hq嘉泰姆	13.22Hq嘉泰姆	0.82Hq嘉泰姆	122Hq嘉泰姆	50002Hq嘉泰姆
CXSD6284/A2Hq嘉泰姆	LQFP7x7 482Hq嘉泰姆 TQFN7x7-482Hq嘉泰姆	VM2Hq嘉泰姆	12Hq嘉泰姆	62Hq嘉泰姆	0.0152Hq嘉泰姆	1.42Hq嘉泰姆	6.52Hq嘉泰姆	-2Hq嘉泰姆	52Hq嘉泰姆	18002Hq嘉泰姆
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CXSD62862Hq嘉泰姆	SOP-142Hq嘉泰姆	VM2Hq嘉泰姆	12Hq嘉泰姆	12Hq嘉泰姆	102Hq嘉泰姆	52Hq嘉泰姆	13.22Hq嘉泰姆	0.82Hq嘉泰姆	122Hq嘉泰姆	30002Hq嘉泰姆
CXSD62872Hq嘉泰姆	SOP-8-P\|DIP-82Hq嘉泰姆	VM2Hq嘉泰姆	12Hq嘉泰姆	12Hq嘉泰姆	302Hq嘉泰姆	2.92Hq嘉泰姆	13.22Hq嘉泰姆	1.22Hq嘉泰姆	122Hq嘉泰姆	30002Hq嘉泰姆
CXSD62882Hq嘉泰姆	SSOP282Hq嘉泰姆 QFN4x4-242Hq嘉泰姆	VM2Hq嘉泰姆	12Hq嘉泰姆	22Hq嘉泰姆	202Hq嘉泰姆	52Hq嘉泰姆	242Hq嘉泰姆	0.92Hq嘉泰姆	52Hq嘉泰姆	12002Hq嘉泰姆
CXSD62892Hq嘉泰姆	SOP-202Hq嘉泰姆	VM2Hq嘉泰姆	12Hq嘉泰姆	22Hq嘉泰姆	202Hq嘉泰姆	2.22Hq嘉泰姆	13.22Hq嘉泰姆	0.62Hq嘉泰姆	5~122Hq嘉泰姆	40002Hq嘉泰姆
CXSD62902Hq嘉泰姆