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

一,产品概述(General Description)     CXSD62136 CXSD62136B is a 2A synchronous buck converter with integrated power MOSFETs.The CXSD62136 CXSD62136B design with a current-mode control scheme, can convert wide input voltage of 4.5V to 24V to the output voltage adjustable from 0.92V to 20V to provide excellent output voltage regulation. The CXSD62136 CXSD62136B is also equipped with Power-on-reset, softstart, and whole protections (over-temperature, and current-limit) into a single package.This device, available SOP-8, provides a very compact system solution external components and PCB area  Oin嘉泰姆

二.产品特点(Features)Oin嘉泰姆

Wide Input Voltage from 4.5V to 24VOin嘉泰姆
2A Continuous Output CurrentOin嘉泰姆
Adjustable Output Voltage from 0.92V to 20VOin嘉泰姆
Intergrated N-MOSFETOin嘉泰姆
Fixed 340kHz Switching FrequencyOin嘉泰姆
Stable with Low ESR CapacitorsOin嘉泰姆
Power-On-Reset DetectionOin嘉泰姆
Programmable Soft-StartOin嘉泰姆
Over-Temperature ProtectionOin嘉泰姆
Over-Voltage ProtectionOin嘉泰姆
Current-Limit Protection with Frequency FoldbackOin嘉泰姆
Enable/Shutdown FunctionOin嘉泰姆
Small SOP-8 PackageOin嘉泰姆
Lead Free and Green Devices Available (RoHS Compliant)Oin嘉泰姆

三,应用范围 (Applications)Oin嘉泰姆

LCD Monitor/TVOin嘉泰姆
Set-Top BoxOin嘉泰姆

DSL, Switch HUBOin嘉泰姆
Notebook ComputerOin嘉泰姆

四.下载产品资料PDF文档 Oin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！Oin嘉泰姆

 Oin嘉泰姆

五,产品封装图 (Package)Oin嘉泰姆

Oin嘉泰姆

六.电路原理图Oin嘉泰姆

Oin嘉泰姆

• 七,功能概述Oin嘉泰姆

  ---

Main Control Loop The CXSD62136 CXSD62136B is a constant frequency current mode switching regulator. During normal operation, the inter-Oin嘉泰姆

nal N-channel power MOSFET is turned on each cycle when the oscillator sets an internal RS latch and wouldOin嘉泰姆
be turned off when an internal current comparator (ICMP) resets the latch. The peak inductor current at which ICMPOin嘉泰姆
resets the RS latch is controlled by the voltage on the COMP pin, which is the output of the error amplifierOin嘉泰姆
(EAMP). An external resistive divider connected between VOUT and ground allows the EAMP to receive an outputOin嘉泰姆
feedback voltage VFB at FB pin. When the load current increases, it causes a slight decrease in VFB relative toOin嘉泰姆
the 0.92V reference, which in turn causes the COMP volt- age to increase until the average inductor current matchesOin嘉泰姆
the new load current. Oin嘉泰姆
VIN Power-On-Reset (POR) and EN Under-voltage LockoutOin嘉泰姆
The CXSD62136 CXSD62136B keep monitoring the voltage on VIN pin to prevent wrong logic operations which may occur when VIN voltage is not high enough for the internal control circuitry to operate. The VIN POR has a rising thresholdOin嘉泰姆
of 4.1V (typical) with 0.5V of hysteresis.An external under-voltage lockout (UVLO) is sensed at the EN pin. TheOin嘉泰姆
EN UVLO has a rising threshold of 2.5V with 0.2V of hysteresis. The EN pin should be connectedOin嘉泰姆
a resistor divider from VIN to EN.After the VIN and EN voltages exceed their respective voltage thresholds,Oin嘉泰姆
the IC starts a start-up process and then ramps up the output voltage to the setting of output voltage.Oin嘉泰姆
Over-Temperature Protection (OTP)Oin嘉泰姆
The over-temperature circuit limits the junction tempera-ture of the CXSD62136 CXSD62136B. When the junction temperature ex-ceeds TJ = +160oC, a thermal sensor turns off the power MOSFET, allowing the devices to cool. The thermal sen-sor allows the converter to start a start-up process and regulate the output voltage again after the junction tem-Oin嘉泰姆
perature cools by 50oC.The OTP is designed with a 50oC hysteresis to lower the average TJ during continuous thermal overload conditions,increasing lifetime of the lC.Oin嘉泰姆
Enable / ShutdownOin嘉泰姆
Driving EN to ground places the CXSD62136 CXSD62136B in shutdown. When in shutdown, the internal power MOSFET turns off,all internal circuitry shuts down.Oin嘉泰姆
Current-Limit ProtectionOin嘉泰姆
The CXSD62136 CXSD62136B monitors the output current, flowing through the N-Channel power MOSFET, and limits theOin嘉泰姆
IC from damages during overload, short-circuit and over- voltage conditions. Oin嘉泰姆
Frequency FoldbackOin嘉泰姆
The foldback frequency is controlled by the FB voltage.When the FB pin voltage is under 0.6V, the frequency ofOin嘉泰姆
the oscillator will be reduced to 110kHz. This lower fre-quency allows the inductor current to safely discharge,Oin嘉泰姆
thereby preventing current runaway. The oscillator’s fre-quency will switch to its designed rate when the feedbackOin嘉泰姆
voltage on FB rises above the rising frequency foldback threshold (0.6V, typical) again.Oin嘉泰姆
Over-Voltage ProtectionOin嘉泰姆
The over-voltage function monitors the output voltage by FB pin. When the FB voltage increase over 120% of theOin嘉泰姆
reference voltage, the over-voltage protection compara-tor will force the low-side MOSFET gate driver high. ThisOin嘉泰姆
action actively pulls down the output voltage. As soon as the output voltage is within regulation, the OVP compara-Oin嘉泰姆
tor is disengaged. The chip will restore its normal operation.Oin嘉泰姆

八,相关产品         更多同类产品.......Oin嘉泰姆

• Switching Regulator > Buck ConverterOin嘉泰姆
  Part_No Oin嘉泰姆	PackageOin嘉泰姆	ArchitectuOin嘉泰姆	No.ofOin嘉泰姆 PWM Oin嘉泰姆 OutpuOin嘉泰姆	DriveOin嘉泰姆 LoutOin嘉泰姆 (A) Oin嘉泰姆	Vin(V) Oin嘉泰姆		FmaxOin嘉泰姆 Khz Oin嘉泰姆	Vref Oin嘉泰姆 (V) Oin嘉泰姆	R-Top (milohm) Oin嘉泰姆	R-Sync (milohm) Oin嘉泰姆	Iq (No load) (uA) Oin嘉泰姆
  					minOin嘉泰姆	maxOin嘉泰姆
  CXSD62122Oin嘉泰姆	TQFN5x6-28Oin嘉泰姆	CMOin嘉泰姆	1Oin嘉泰姆	5Oin嘉泰姆	4.5Oin嘉泰姆	26Oin嘉泰姆	380Oin嘉泰姆	0.8Oin嘉泰姆	50Oin嘉泰姆	20Oin嘉泰姆	1000Oin嘉泰姆
  CXSD62123Oin嘉泰姆	SOP-8Oin嘉泰姆	CMOin嘉泰姆	1Oin嘉泰姆	2Oin嘉泰姆	4.5Oin嘉泰姆	26Oin嘉泰姆	380Oin嘉泰姆	0.8Oin嘉泰姆	100Oin嘉泰姆		1000Oin嘉泰姆
  CXSD62124Oin嘉泰姆	SOP-8POin嘉泰姆	CMOin嘉泰姆	1Oin嘉泰姆	4Oin嘉泰姆	4.5Oin嘉泰姆	26Oin嘉泰姆	380Oin嘉泰姆	0.8Oin嘉泰姆	80Oin嘉泰姆		1000Oin嘉泰姆
  CXSD62125Oin嘉泰姆	SOT23-5|TSOT23-5Oin嘉泰姆	CMOin嘉泰姆	1Oin嘉泰姆	1Oin嘉泰姆	2.7Oin嘉泰姆	6Oin嘉泰姆	1500Oin嘉泰姆	0.6Oin嘉泰姆	280Oin嘉泰姆	250Oin嘉泰姆	25Oin嘉泰姆
  CXSD62125AOin嘉泰姆	SOT23-5Oin嘉泰姆	CMOin嘉泰姆	1Oin嘉泰姆	1Oin嘉泰姆	2.7Oin嘉泰姆	6Oin嘉泰姆	1500Oin嘉泰姆	0.6Oin嘉泰姆	280Oin嘉泰姆	250Oin嘉泰姆
  CXSD62126Oin嘉泰姆	SOP-8Oin嘉泰姆	CMOin嘉泰姆	1Oin嘉泰姆	3Oin嘉泰姆	4.3Oin嘉泰姆	14Oin嘉泰姆	500Oin嘉泰姆	0.8Oin嘉泰姆	70Oin嘉泰姆	70Oin嘉泰姆	500Oin嘉泰姆
  CXSD62127Oin嘉泰姆	SOP-8POin嘉泰姆	CMOin嘉泰姆	1Oin嘉泰姆	3Oin嘉泰姆	4.3Oin嘉泰姆	14Oin嘉泰姆	500Oin嘉泰姆	0.8Oin嘉泰姆	55Oin嘉泰姆	45Oin嘉泰姆	500Oin嘉泰姆
  CXSD62128BOin嘉泰姆	TDFN3x3-10Oin嘉泰姆			3Oin嘉泰姆	2.6Oin嘉泰姆	5.5Oin嘉泰姆	2000Oin嘉泰姆	0.8Oin嘉泰姆	110Oin嘉泰姆	110Oin嘉泰姆	460Oin嘉泰姆
  CXSD62129Oin嘉泰姆	TDFN3x3-10Oin嘉泰姆	CMOin嘉泰姆	2Oin嘉泰姆	1Oin嘉泰姆	2.7Oin嘉泰姆	6Oin嘉泰姆	1500Oin嘉泰姆	0.6Oin嘉泰姆	280Oin嘉泰姆	250Oin嘉泰姆	500Oin嘉泰姆
  CXSD62129AOin嘉泰姆	TDFN3x3-10Oin嘉泰姆	CMOin嘉泰姆	2Oin嘉泰姆	1Oin嘉泰姆	2.7Oin嘉泰姆	6Oin嘉泰姆	1500Oin嘉泰姆	0.6Oin嘉泰姆	280Oin嘉泰姆	250Oin嘉泰姆
  CXSD62130Oin嘉泰姆	TDFN2x2-6Oin嘉泰姆	CMOin嘉泰姆	1Oin嘉泰姆	1Oin嘉泰姆	2.7Oin嘉泰姆	6Oin嘉泰姆	1500Oin嘉泰姆	0.6Oin嘉泰姆	280Oin嘉泰姆	250Oin嘉泰姆	25Oin嘉泰姆
  CXSD62130AOin嘉泰姆	TDFN2x2-6Oin嘉泰姆	CMOin嘉泰姆	1Oin嘉泰姆	1Oin嘉泰姆	2.7Oin嘉泰姆	6Oin嘉泰姆	1500Oin嘉泰姆	0.6Oin嘉泰姆	280Oin嘉泰姆	250Oin嘉泰姆
  CXSD62131Oin嘉泰姆	TDFN3x3-12Oin嘉泰姆	CMOin嘉泰姆	2Oin嘉泰姆	1Oin嘉泰姆	2.7Oin嘉泰姆	6Oin嘉泰姆	1500Oin嘉泰姆	0.6Oin嘉泰姆	280Oin嘉泰姆	250Oin嘉泰姆	25Oin嘉泰姆
  CXSD62131AOin嘉泰姆	TDFN3x3-12Oin嘉泰姆	CMOin嘉泰姆	2Oin嘉泰姆	1Oin嘉泰姆	2.7Oin嘉泰姆	6Oin嘉泰姆	1500Oin嘉泰姆	0.6Oin嘉泰姆	280Oin嘉泰姆	250Oin嘉泰姆
  CXSD62131COin嘉泰姆	TDFN 3x3 12Oin嘉泰姆	CMOin嘉泰姆	2Oin嘉泰姆	1Oin嘉泰姆	3Oin嘉泰姆	5.5Oin嘉泰姆	1500Oin嘉泰姆	0.6Oin嘉泰姆	280Oin嘉泰姆	250Oin嘉泰姆	30Oin嘉泰姆
  CXSD62132Oin嘉泰姆	TQFN3x3-20Oin嘉泰姆	CMOin嘉泰姆	3Oin嘉泰姆	2Oin嘉泰姆	2.9Oin嘉泰姆	5.5Oin嘉泰姆	1500Oin嘉泰姆	0.6Oin嘉泰姆	-Oin嘉泰姆	-Oin嘉泰姆	300Oin嘉泰姆
  CXSD62133Oin嘉泰姆	TDFN2x2-8Oin嘉泰姆	CMOin嘉泰姆	1Oin嘉泰姆	1Oin嘉泰姆	3.3Oin嘉泰姆	8Oin嘉泰姆	1500Oin嘉泰姆	0.6Oin嘉泰姆	280Oin嘉泰姆	250Oin嘉泰姆	25Oin嘉泰姆
  CXSD62134Oin嘉泰姆	SOP-8Oin嘉泰姆	CMOin嘉泰姆	1Oin嘉泰姆	2Oin嘉泰姆	4.5Oin嘉泰姆	24Oin嘉泰姆	340Oin嘉泰姆	0.925Oin嘉泰姆	110Oin嘉泰姆	110Oin嘉泰姆	1900Oin嘉泰姆
  CXSD62135Oin嘉泰姆	SOP-8POin嘉泰姆	CMOin嘉泰姆	1Oin嘉泰姆	3Oin嘉泰姆	4.5Oin嘉泰姆	24Oin嘉泰姆	340Oin嘉泰姆	0.925Oin嘉泰姆	110Oin嘉泰姆	110Oin嘉泰姆

共有条评论 用户名: 密码: 验证码: 匿名发表