1.产品概述                       2.产品特点07j嘉泰姆
3.应用范围                       4.下载产品资料PDF文档 07j嘉泰姆
5.产品封装图                     6.电路原理图                   07j嘉泰姆
7.功能概述                        8.相关产品07j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  07j嘉泰姆

二.产品特点(Features)07j嘉泰姆

Wide Input Voltage from 4.5V to 24V07j嘉泰姆
2A Continuous Output Current07j嘉泰姆
Adjustable Output Voltage from 0.92V to 20V07j嘉泰姆
Intergrated N-MOSFET07j嘉泰姆
Fixed 340kHz Switching Frequency07j嘉泰姆
Stable with Low ESR Capacitors07j嘉泰姆
Power-On-Reset Detection07j嘉泰姆
Programmable Soft-Start07j嘉泰姆
Over-Temperature Protection07j嘉泰姆
Over-Voltage Protection07j嘉泰姆
Current-Limit Protection with Frequency Foldback07j嘉泰姆
Enable/Shutdown Function07j嘉泰姆
Small SOP-8 Package07j嘉泰姆
Lead Free and Green Devices Available (RoHS Compliant)07j嘉泰姆

三,应用范围 (Applications)07j嘉泰姆

LCD Monitor/TV07j嘉泰姆
Set-Top Box07j嘉泰姆

DSL, Switch HUB07j嘉泰姆
Notebook Computer07j嘉泰姆

四.下载产品资料PDF文档 07j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！07j嘉泰姆

 07j嘉泰姆

五,产品封装图 (Package)07j嘉泰姆

07j嘉泰姆

六.电路原理图07j嘉泰姆

07j嘉泰姆

• 七,功能概述07j嘉泰姆

  ---

Main Control Loop The CXSD62136 CXSD62136B is a constant frequency current mode switching regulator. During normal operation, the inter-07j嘉泰姆

nal N-channel power MOSFET is turned on each cycle when the oscillator sets an internal RS latch and would07j嘉泰姆
be turned off when an internal current comparator (ICMP) resets the latch. The peak inductor current at which ICMP07j嘉泰姆
resets the RS latch is controlled by the voltage on the COMP pin, which is the output of the error amplifier07j嘉泰姆
(EAMP). An external resistive divider connected between VOUT and ground allows the EAMP to receive an output07j嘉泰姆
feedback voltage VFB at FB pin. When the load current increases, it causes a slight decrease in VFB relative to07j嘉泰姆
the 0.92V reference, which in turn causes the COMP volt- age to increase until the average inductor current matches07j嘉泰姆
the new load current. 07j嘉泰姆
VIN Power-On-Reset (POR) and EN Under-voltage Lockout07j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 threshold07j嘉泰姆
of 4.1V (typical) with 0.5V of hysteresis.An external under-voltage lockout (UVLO) is sensed at the EN pin. The07j嘉泰姆
EN UVLO has a rising threshold of 2.5V with 0.2V of hysteresis. The EN pin should be connected07j嘉泰姆
a resistor divider from VIN to EN.After the VIN and EN voltages exceed their respective voltage thresholds,07j嘉泰姆
the IC starts a start-up process and then ramps up the output voltage to the setting of output voltage.07j嘉泰姆
Over-Temperature Protection (OTP)07j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-07j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.07j嘉泰姆
Enable / Shutdown07j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.07j嘉泰姆
Current-Limit Protection07j嘉泰姆
The CXSD62136 CXSD62136B monitors the output current, flowing through the N-Channel power MOSFET, and limits the07j嘉泰姆
IC from damages during overload, short-circuit and over- voltage conditions. 07j嘉泰姆
Frequency Foldback07j嘉泰姆
The foldback frequency is controlled by the FB voltage.When the FB pin voltage is under 0.6V, the frequency of07j嘉泰姆
the oscillator will be reduced to 110kHz. This lower fre-quency allows the inductor current to safely discharge,07j嘉泰姆
thereby preventing current runaway. The oscillator’s fre-quency will switch to its designed rate when the feedback07j嘉泰姆
voltage on FB rises above the rising frequency foldback threshold (0.6V, typical) again.07j嘉泰姆
Over-Voltage Protection07j嘉泰姆
The over-voltage function monitors the output voltage by FB pin. When the FB voltage increase over 120% of the07j嘉泰姆
reference voltage, the over-voltage protection compara-tor will force the low-side MOSFET gate driver high. This07j嘉泰姆
action actively pulls down the output voltage. As soon as the output voltage is within regulation, the OVP compara-07j嘉泰姆
tor is disengaged. The chip will restore its normal operation.07j嘉泰姆

八,相关产品         更多同类产品.......07j嘉泰姆

• Switching Regulator > Buck Converter07j嘉泰姆
  Part_No 07j嘉泰姆	Package07j嘉泰姆	Architectu07j嘉泰姆	No.of07j嘉泰姆 PWM 07j嘉泰姆 Outpu07j嘉泰姆	Drive07j嘉泰姆 Lout07j嘉泰姆 (A) 07j嘉泰姆	Vin(V) 07j嘉泰姆		Fmax07j嘉泰姆 Khz 07j嘉泰姆	Vref 07j嘉泰姆 (V) 07j嘉泰姆	R-Top (milohm) 07j嘉泰姆	R-Sync (milohm) 07j嘉泰姆	Iq (No load) (uA) 07j嘉泰姆
  					min07j嘉泰姆	max07j嘉泰姆
  CXSD6212207j嘉泰姆	TQFN5x6-2807j嘉泰姆	CM07j嘉泰姆	107j嘉泰姆	507j嘉泰姆	4.507j嘉泰姆	2607j嘉泰姆	38007j嘉泰姆	0.807j嘉泰姆	5007j嘉泰姆	2007j嘉泰姆	100007j嘉泰姆
  CXSD6212307j嘉泰姆	SOP-807j嘉泰姆	CM07j嘉泰姆	107j嘉泰姆	207j嘉泰姆	4.507j嘉泰姆	2607j嘉泰姆	38007j嘉泰姆	0.807j嘉泰姆	10007j嘉泰姆		100007j嘉泰姆
  CXSD6212407j嘉泰姆	SOP-8P07j嘉泰姆	CM07j嘉泰姆	107j嘉泰姆	407j嘉泰姆	4.507j嘉泰姆	2607j嘉泰姆	38007j嘉泰姆	0.807j嘉泰姆	8007j嘉泰姆		100007j嘉泰姆
  CXSD6212507j嘉泰姆	SOT23-5|TSOT23-507j嘉泰姆	CM07j嘉泰姆	107j嘉泰姆	107j嘉泰姆	2.707j嘉泰姆	607j嘉泰姆	150007j嘉泰姆	0.607j嘉泰姆	28007j嘉泰姆	25007j嘉泰姆	2507j嘉泰姆
  CXSD62125A07j嘉泰姆	SOT23-507j嘉泰姆	CM07j嘉泰姆	107j嘉泰姆	107j嘉泰姆	2.707j嘉泰姆	607j嘉泰姆	150007j嘉泰姆	0.607j嘉泰姆	28007j嘉泰姆	25007j嘉泰姆
  CXSD6212607j嘉泰姆	SOP-807j嘉泰姆	CM07j嘉泰姆	107j嘉泰姆	307j嘉泰姆	4.307j嘉泰姆	1407j嘉泰姆	50007j嘉泰姆	0.807j嘉泰姆	7007j嘉泰姆	7007j嘉泰姆	50007j嘉泰姆
  CXSD6212707j嘉泰姆	SOP-8P07j嘉泰姆	CM07j嘉泰姆	107j嘉泰姆	307j嘉泰姆	4.307j嘉泰姆	1407j嘉泰姆	50007j嘉泰姆	0.807j嘉泰姆	5507j嘉泰姆	4507j嘉泰姆	50007j嘉泰姆
  CXSD62128B07j嘉泰姆	TDFN3x3-1007j嘉泰姆			307j嘉泰姆	2.607j嘉泰姆	5.507j嘉泰姆	200007j嘉泰姆	0.807j嘉泰姆	11007j嘉泰姆	11007j嘉泰姆	46007j嘉泰姆
  CXSD6212907j嘉泰姆	TDFN3x3-1007j嘉泰姆	CM07j嘉泰姆	207j嘉泰姆	107j嘉泰姆	2.707j嘉泰姆	607j嘉泰姆	150007j嘉泰姆	0.607j嘉泰姆	28007j嘉泰姆	25007j嘉泰姆	50007j嘉泰姆
  CXSD62129A07j嘉泰姆	TDFN3x3-1007j嘉泰姆	CM07j嘉泰姆	207j嘉泰姆	107j嘉泰姆	2.707j嘉泰姆	607j嘉泰姆	150007j嘉泰姆	0.607j嘉泰姆	28007j嘉泰姆	25007j嘉泰姆
  CXSD6213007j嘉泰姆	TDFN2x2-607j嘉泰姆	CM07j嘉泰姆	107j嘉泰姆	107j嘉泰姆	2.707j嘉泰姆	607j嘉泰姆	150007j嘉泰姆	0.607j嘉泰姆	28007j嘉泰姆	25007j嘉泰姆	2507j嘉泰姆
  CXSD62130A07j嘉泰姆	TDFN2x2-607j嘉泰姆	CM07j嘉泰姆	107j嘉泰姆	107j嘉泰姆	2.707j嘉泰姆	607j嘉泰姆	150007j嘉泰姆	0.607j嘉泰姆	28007j嘉泰姆	25007j嘉泰姆
  CXSD6213107j嘉泰姆	TDFN3x3-1207j嘉泰姆	CM07j嘉泰姆	207j嘉泰姆	107j嘉泰姆	2.707j嘉泰姆	607j嘉泰姆	150007j嘉泰姆	0.607j嘉泰姆	28007j嘉泰姆	25007j嘉泰姆	2507j嘉泰姆
  CXSD62131A07j嘉泰姆	TDFN3x3-1207j嘉泰姆	CM07j嘉泰姆	207j嘉泰姆	107j嘉泰姆	2.707j嘉泰姆	607j嘉泰姆	150007j嘉泰姆	0.607j嘉泰姆	28007j嘉泰姆	25007j嘉泰姆
  CXSD62131C07j嘉泰姆	TDFN 3x3 1207j嘉泰姆	CM07j嘉泰姆	207j嘉泰姆	107j嘉泰姆	307j嘉泰姆	5.507j嘉泰姆	150007j嘉泰姆	0.607j嘉泰姆	28007j嘉泰姆	25007j嘉泰姆	3007j嘉泰姆
  CXSD6213207j嘉泰姆	TQFN3x3-2007j嘉泰姆	CM07j嘉泰姆	307j嘉泰姆	207j嘉泰姆	2.907j嘉泰姆	5.507j嘉泰姆	150007j嘉泰姆	0.607j嘉泰姆	-07j嘉泰姆	-07j嘉泰姆	30007j嘉泰姆
  CXSD6213307j嘉泰姆	TDFN2x2-807j嘉泰姆	CM07j嘉泰姆	107j嘉泰姆	107j嘉泰姆	3.307j嘉泰姆	807j嘉泰姆	150007j嘉泰姆	0.607j嘉泰姆	28007j嘉泰姆	25007j嘉泰姆	2507j嘉泰姆
  CXSD6213407j嘉泰姆	SOP-807j嘉泰姆	CM07j嘉泰姆	107j嘉泰姆	207j嘉泰姆	4.507j嘉泰姆	2407j嘉泰姆	34007j嘉泰姆	0.92507j嘉泰姆	11007j嘉泰姆	11007j嘉泰姆	190007j嘉泰姆
  CXSD6213507j嘉泰姆	SOP-8P07j嘉泰姆	CM07j嘉泰姆	107j嘉泰姆	307j嘉泰姆	4.507j嘉泰姆	2407j嘉泰姆	34007j嘉泰姆	0.92507j嘉泰姆	11007j嘉泰姆	11007j嘉泰姆

共有条评论 用户名: 密码: 验证码: 匿名发表