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oMy嘉泰姆

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

一,产品概述(General Description) oMy嘉泰姆
The CXSD62116A/B/C is a voltage mode, fixed 300kHz-switching frequency,oMy嘉泰姆
and synchronous buck controller. The CXSD62116A/B/C allows wide input voltageoMy嘉泰姆
that is either a single 5~12V or two supply voltage(s) for various applications.oMy嘉泰姆
A power-on-reset (POR) circuit monitors the VCC supply voltage to preventoMy嘉泰姆
wrong logic controls. A built-in digital soft-start circuit prevents the outputoMy嘉泰姆
voltages from overshoot as well as limits the input current. An internaloMy嘉泰姆
0.6V temperature-compensated reference voltage with high accuracy isoMy嘉泰姆
designed to meet the requirement of low output voltage applications.oMy嘉泰姆
The CXSD62116A/B/C provides excellent output voltage regulations againstoMy嘉泰姆
load current variation.oMy嘉泰姆
The controller’s over-current protection monitors the output currentoMy嘉泰姆
by using the voltage drops across the RDS(ON)of low-side MOSFET,oMy嘉泰姆
eliminating the need for a current sensing resistor that features highoMy嘉泰姆
efficiency and low cost.oMy嘉泰姆
The CXSD62116A/B/C also integrates over-voltage protection (OVP) andoMy嘉泰姆
under-voltage protection circuit which moni-tors the FB voltage to preventoMy嘉泰姆
the PWM output from over and under voltage.oMy嘉泰姆
The CXSD62116A/B/C is available in a simple SOP-8P package.oMy嘉泰姆
二.产品特点(Features)oMy嘉泰姆
Wide Operation Supply Voltage from 5V to 12VoMy嘉泰姆
Power-On-Reset Monitoring on VCC oMy嘉泰姆
Excellent Reference Voltage RegulationsoMy嘉泰姆
- 0.6V Internal ReferenceoMy嘉泰姆
- ±1% Over Temperature RangeoMy嘉泰姆
Integrated Soft-StartoMy嘉泰姆
Automatic PSM/PWM ModesoMy嘉泰姆
Voltage Mode PWM Operation with 90% (Max.) Duty CycleoMy嘉泰姆
Under-Voltage ProtectionoMy嘉泰姆
Adjustable Over-Current Protection ThresholdoMy嘉泰姆
- Sensing the RDS(ON) of Low-Side MOSFEToMy嘉泰姆
Over-Voltage ProtectionoMy嘉泰姆
Under-Voltage ProtectionoMy嘉泰姆
Simple SOP-8P PackageoMy嘉泰姆
Lead Free and Green Devices AvailableoMy嘉泰姆
(RoHS Compliant)oMy嘉泰姆
三,应用范围 (Applications)oMy嘉泰姆
Graphic CardsoMy嘉泰姆
DSL, Switch HUBoMy嘉泰姆
Wireless LanoMy嘉泰姆
Notebook ComputeroMy嘉泰姆
Mother BoardoMy嘉泰姆
LCD Monitor/TVoMy嘉泰姆

四.下载产品资料PDF文档 oMy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！oMy嘉泰姆

QQ截图20160419174301.jpg oMy嘉泰姆

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

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

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

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

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

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

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

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

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

八,相关产品 更多同类产品...... oMy嘉泰姆

Switching Regulator > Buck ControlleroMy嘉泰姆
Part_No oMy嘉泰姆	Package oMy嘉泰姆	ArchioMy嘉泰姆 tectuoMy嘉泰姆	PhaseoMy嘉泰姆	No.ofoMy嘉泰姆 PWMoMy嘉泰姆 OutputoMy嘉泰姆	Output oMy嘉泰姆 CurrentoMy嘉泰姆 (A) oMy嘉泰姆	InputoMy嘉泰姆 Voltage (V) oMy嘉泰姆		ReferenceoMy嘉泰姆 VoltageoMy嘉泰姆 (V) oMy嘉泰姆	Bias oMy嘉泰姆 VoltageoMy嘉泰姆 (V) oMy嘉泰姆	QuiescentoMy嘉泰姆 CurrentoMy嘉泰姆 (uA) oMy嘉泰姆
Part_No oMy嘉泰姆	Package oMy嘉泰姆	ArchioMy嘉泰姆 tectuoMy嘉泰姆	PhaseoMy嘉泰姆	No.ofoMy嘉泰姆 PWMoMy嘉泰姆 OutputoMy嘉泰姆	Output oMy嘉泰姆 CurrentoMy嘉泰姆 (A) oMy嘉泰姆	minoMy嘉泰姆	maxoMy嘉泰姆	ReferenceoMy嘉泰姆 VoltageoMy嘉泰姆 (V) oMy嘉泰姆	Bias oMy嘉泰姆 VoltageoMy嘉泰姆 (V) oMy嘉泰姆	QuiescentoMy嘉泰姆 CurrentoMy嘉泰姆 (uA) oMy嘉泰姆
CXSD6273oMy嘉泰姆	SOP-14oMy嘉泰姆 QSOP-16oMy嘉泰姆 QFN4x4-16oMy嘉泰姆	VM oMy嘉泰姆	1 oMy嘉泰姆	1 oMy嘉泰姆	30oMy嘉泰姆	2.9 oMy嘉泰姆	13.2oMy嘉泰姆	0.9oMy嘉泰姆	12 oMy嘉泰姆	8000oMy嘉泰姆
CXSD6274oMy嘉泰姆	SOP-8oMy嘉泰姆	VM oMy嘉泰姆	1oMy嘉泰姆	1oMy嘉泰姆	20oMy嘉泰姆	2.9 oMy嘉泰姆	13.2 oMy嘉泰姆	0.8oMy嘉泰姆	12oMy嘉泰姆	5000oMy嘉泰姆
CXSD6274CoMy嘉泰姆	SOP-8oMy嘉泰姆	VMoMy嘉泰姆	1oMy嘉泰姆	1oMy嘉泰姆	20oMy嘉泰姆	2.9oMy嘉泰姆	13.2oMy嘉泰姆	0.8oMy嘉泰姆	12oMy嘉泰姆	5000oMy嘉泰姆
CXSD6275oMy嘉泰姆	QFN4x4-24oMy嘉泰姆	VMoMy嘉泰姆	2oMy嘉泰姆	1oMy嘉泰姆	60oMy嘉泰姆	3.1oMy嘉泰姆	13.2oMy嘉泰姆	0.6oMy嘉泰姆	12oMy嘉泰姆	5000oMy嘉泰姆
CXSD6276oMy嘉泰姆	SOP-8oMy嘉泰姆	VMoMy嘉泰姆	1oMy嘉泰姆	1oMy嘉泰姆	20oMy嘉泰姆	2.2oMy嘉泰姆	13.2oMy嘉泰姆	0.8oMy嘉泰姆	5~12oMy嘉泰姆	2100oMy嘉泰姆
CXSD6276AoMy嘉泰姆	SOP-8oMy嘉泰姆	VMoMy嘉泰姆	1oMy嘉泰姆	1oMy嘉泰姆	20oMy嘉泰姆	2.2oMy嘉泰姆	13.2oMy嘉泰姆	0.8oMy嘉泰姆	5~12oMy嘉泰姆	2100oMy嘉泰姆
CXSD6277/A/BoMy嘉泰姆	SOP8\|TSSOP8oMy嘉泰姆	VMoMy嘉泰姆	1oMy嘉泰姆	1oMy嘉泰姆	5oMy嘉泰姆	5oMy嘉泰姆	13.2oMy嘉泰姆	1.25\|0.8oMy嘉泰姆	5~12oMy嘉泰姆	3000oMy嘉泰姆
CXSD6278oMy嘉泰姆	SOP-8oMy嘉泰姆	VMoMy嘉泰姆	1oMy嘉泰姆	1oMy嘉泰姆	10oMy嘉泰姆	3.3oMy嘉泰姆	5.5oMy嘉泰姆	0.8oMy嘉泰姆	5oMy嘉泰姆	2100oMy嘉泰姆
CXSD6279BoMy嘉泰姆	SOP-14oMy嘉泰姆	VM oMy嘉泰姆	1oMy嘉泰姆	1oMy嘉泰姆	10oMy嘉泰姆	5oMy嘉泰姆	13.2oMy嘉泰姆	0.8oMy嘉泰姆	12oMy嘉泰姆	2000oMy嘉泰姆
CXSD6280oMy嘉泰姆	TSSOP-24oMy嘉泰姆 \|QFN5x5-32oMy嘉泰姆	VMoMy嘉泰姆	1oMy嘉泰姆	2oMy嘉泰姆	20oMy嘉泰姆	5oMy嘉泰姆	13.2oMy嘉泰姆	0.6oMy嘉泰姆	5~12oMy嘉泰姆	4000oMy嘉泰姆
CXSD6281NoMy嘉泰姆	SOP14oMy嘉泰姆 QSOP16oMy嘉泰姆 QFN-16oMy嘉泰姆	VMoMy嘉泰姆	1oMy嘉泰姆	1oMy嘉泰姆	30oMy嘉泰姆	2.9oMy嘉泰姆	13.2oMy嘉泰姆	0.9oMy嘉泰姆	12oMy嘉泰姆	4000oMy嘉泰姆
CXSD6282oMy嘉泰姆	SOP-14oMy嘉泰姆	VMoMy嘉泰姆	1oMy嘉泰姆	1oMy嘉泰姆	30oMy嘉泰姆	2.2oMy嘉泰姆	13.2oMy嘉泰姆	0.6oMy嘉泰姆	12oMy嘉泰姆	5000oMy嘉泰姆
CXSD6282AoMy嘉泰姆	SOP-14oMy嘉泰姆	VMoMy嘉泰姆	1oMy嘉泰姆	1oMy嘉泰姆	30oMy嘉泰姆	2.2oMy嘉泰姆	13.2oMy嘉泰姆	0.6oMy嘉泰姆	12oMy嘉泰姆	5000oMy嘉泰姆
CXSD6283oMy嘉泰姆	SOP-14oMy嘉泰姆	VMoMy嘉泰姆	1oMy嘉泰姆	1oMy嘉泰姆	25oMy嘉泰姆	2.2oMy嘉泰姆	13.2oMy嘉泰姆	0.8oMy嘉泰姆	12oMy嘉泰姆	5000oMy嘉泰姆
CXSD6284/AoMy嘉泰姆	LQFP7x7 48oMy嘉泰姆 TQFN7x7-48oMy嘉泰姆	VMoMy嘉泰姆	1oMy嘉泰姆	6oMy嘉泰姆	0.015oMy嘉泰姆	1.4oMy嘉泰姆	6.5oMy嘉泰姆	-oMy嘉泰姆	5oMy嘉泰姆	1800oMy嘉泰姆
CXSD6285oMy嘉泰姆	TSSOP-24PoMy嘉泰姆	VMoMy嘉泰姆	1oMy嘉泰姆	2oMy嘉泰姆	20oMy嘉泰姆	2.97oMy嘉泰姆	5.5oMy嘉泰姆	0.8oMy嘉泰姆	5~12oMy嘉泰姆	5000oMy嘉泰姆
CXSD6286oMy嘉泰姆	SOP-14oMy嘉泰姆	VMoMy嘉泰姆	1oMy嘉泰姆	1oMy嘉泰姆	10oMy嘉泰姆	5oMy嘉泰姆	13.2oMy嘉泰姆	0.8oMy嘉泰姆	12oMy嘉泰姆	3000oMy嘉泰姆
CXSD6287oMy嘉泰姆	SOP-8-P\|DIP-8oMy嘉泰姆	VMoMy嘉泰姆	1oMy嘉泰姆	1oMy嘉泰姆	30oMy嘉泰姆	2.9oMy嘉泰姆	13.2oMy嘉泰姆	1.2oMy嘉泰姆	12oMy嘉泰姆	3000oMy嘉泰姆
CXSD6288oMy嘉泰姆	SSOP28oMy嘉泰姆 QFN4x4-24oMy嘉泰姆	VMoMy嘉泰姆	1oMy嘉泰姆	2oMy嘉泰姆	20oMy嘉泰姆	5oMy嘉泰姆	24oMy嘉泰姆	0.9oMy嘉泰姆	5oMy嘉泰姆	1200oMy嘉泰姆
CXSD6289oMy嘉泰姆	SOP-20oMy嘉泰姆	VMoMy嘉泰姆	1oMy嘉泰姆	2oMy嘉泰姆	20oMy嘉泰姆	2.2oMy嘉泰姆	13.2oMy嘉泰姆	0.6oMy嘉泰姆	5~12oMy嘉泰姆	4000oMy嘉泰姆
CXSD6290oMy嘉泰姆