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CXSD62152同步降压转换器85mΩ高端和75mΩ低功率mosfet

产品型号：	CXSD62152
产品类型：	DC-DC转换器
产品系列：	Buck降压型芯片
产品状态：	量产
浏览次数：	49 次

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产品简介

CXSD62152是一种集成了85mΩ的同步降压转换器高侧和75mΩ低侧功率mosfet。带有
电流模式控制方案可以将2.9V到6V的宽输入电压转换为输出电压可从0.8V调整到6V，提供卓越的输出电压调节。

技术参数

输入电压范围 (VIN)	≤ 2.7~6V
输出电压 (VOUT)	ADJV
输出电流 (IOUT)	2A
工作频率	1000Hz
转换效率	95%%
封装类型	SOP-8P\|TDFN3x3-10
Topology	CM BUCK降压型芯片
Control method	No. of PWM Outputs:1
Switching frequency	1000
Protection	R-Top(milohm):1000
Features	静态工作电流Iq (No load) (uA) :460
Application	R-Sync (milohm): 75
Operating temp	-40℃~125℃
Reference design	反馈电压Vref (V):0.8

产品详细介绍

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

一,产品概述(General Description)
CXSD62152/A is a synchronous buck converters with integrated 85m Ω
high side and 75m Ω low side power MOSFETs. The CXSD62152/A with a
current-mode control scheme can convert wide input voltage of 2.9V to 6V to
the output voltage adjustable from 0.8V to 6V to provide excellent output
voltage regulation.
The CXSD62152/A is equipped with an automatic Skip/PWM mode
operation. At light load , the IC operates in the Skip mode to reduce the
switching losses. At heavy load, the IC works in PWM mode. The CXSD62152/A
is also equipped with Power-on-reset, soft start, soft-stop, and whole protections
(under-voltage,over-voltage, over-temperature and current-limit) into a single package.
This device, available in SOP-8, TDFN3x3-10 packages,provides a very compact
system solution external components and PCB area.
二.产品特点(Features)
High Efficiency up to 94%
Adjustable Output Voltage from 0.8V to V PVDD
Operating from 2.9 to 6V Supply
Integrated 85mΩ High Side / 75mΩ Low Side
MOSFETs
Low Dropout Operation: 100% Duty Cycle
Stable with Low ESR Ceramic Capacitors
Current up to 2A
Power-On-Reset Detection on VCC and VIN
Mode Selestion :CXSD62152 : Automatic PFM/PWM CXSD62152A : Forced PWM
Integrate Soft-Start and Soft-Stop
Over-Temperature Protection
Over-Voltage Protection
Under-Voltage Protection
High/ Low Side Current Limit
Power Good Indication
Enable/Shutdown Function
Available in SOP-8P and TDFN3x3-10 Packages
Lead Free and Green Devices Available
三,应用范围 (Applications)
Notebook Computer & UMPC
LCD Monitor/TV
Set-Top Box
DSL, Switch HUBr
Portable Instrument
四.下载产品资料PDF文档

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！

QQ截图20160419174301.jpg

五,产品封装图 (Package)

六.电路原理图

七,功能概述

VCC and VIN Power-On-Reset (POR)
TThe CXSD62152/A keeps monitoring the voltage on VIN and VCC pins to prevent wrong logic operations which
may occur when VIN or VCC voltage is not high enough for internal control circuitry to operate. The VCC POR ris-
ing threshold is 2.7V (typical) with 0.2V hysteresis and VIN POR rising threshold is 2.3V with 0.05V hysteresis.
During startup, the VCC and VIN voltage must exceed the POR threshold. Then the IC starts a starts-up process
and ramps up the output voltage to the voltage target.
Output Under-Voltage Protection (UVP)
In the operational process, if a short-circuit occurs, the output voltage will drop quickly. Before the current-limit
circuit responds, the output voltage will fall out of the required regulation range. The under-voltage continually
monitors the FB voltage after soft-start is completed. If a load step is strong enough to pull the output voltage lower
than the under-voltage threshold, the IC shuts down converter’s output.The under-voltage threshold is 50% of the
nominal out put voltage. The under-voltage comparator has a built-in 3μs noise filter to prevent the chips from wrong
UVP shut down being caused by noise. The CXSD62152/A will be latched after under-voltage protection.
Over-Voltage Protection (OVP)
The over-voltage function monitors the output voltage by FB pin. When the FB voltage increases over 125% of the
reference voltage due to the high-side MOSFET failure or for other reasons, the over-voltage protection comparator
will force the low-side MOSFET gate driver high till the occurence of low-side current limit. This action actively
pulls down the output voltage. As soon as the output voltage is less than 0.2V, the CXSD62152/A will be latched off
and needs a POR or enable to recover to normal operation.
Over-Temperature Protection (OTP)
The over-temperature circuit limits the junction tempera ture of the CXSD62152/A. When the junction temperature
exceeds TJ = 160oC, a thermal sensor turns off the both power MOSFETs, allowing the devices to cool.
The thermal sensor allows the converters to start a start up process and to regulate the output voltage again after
the junction temperature 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 CXSD62152/A.
Current-Limit Protection
The CXSD62152/A monitors the output current, flows through the high-side and low-side power MOSFETs, and limits
the current peak at current-limit level to prevent the IC from damaging during overload, short-circuit and over-
voltage conditions. Typical high side power MOSFET current limit is 3A, and low side MOSFET current limit is 1.9A.
Soft-Start
The CXSD62152/A has a built-in soft-start to control the rise rate of the output voltage and limit the input current surge
during start-up. During soft-start, an internal voltage ramp connected to one of the positive inputs of the error
amplifier, rises up from 0V to 0.95V to replace the reference voltage (0.8V) until the voltage ramp reaches the
reference voltage. During soft-start without output overvoltage, the CXSD62152/A converter¡|s sinking capability is
disabled until the output voltage reaches the voltage target.
Soft-Stop
At the moment of shutdown controlled by EN signal, under-voltage event or over-temperature protection, theCXSD62152/A initiates a soft-stop process to discharge the output voltage in the output capacitors. Certainly, the load
current also discharges the output voltage. During softstop, the internal voltage ramp (VRAMP) falls down from 0.
95V to 0V to replace the reference voltage. Therefore, the output voltage falls down slowly at the light load. After the
soft-stop interval elapses, the soft-stop process ends and the IC turns on the low-side power MOSFET.
八,相关产品 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)
Part_No	Package	Architectu	No.of PWM Outpu	Drive Lout (A)	min	max	Fmax Khz	Vref (V)	R-Top (milohm)	R-Sync (milohm)	Iq (No load) (uA)
CXSD62122	TQFN5x6-28	CM	1	5	4.5	26	380	0.8	50	20	1000
CXSD62123	SOP-8	CM	1	2	4.5	26	380	0.8	100		1000
CXSD62124	SOP-8P	CM	1	4	4.5	26	380	0.8	80		1000
CXSD62125	SOT23-5\|TSOT23-5	CM	1	1	2.7	6	1500	0.6	280	250	25
CXSD62125A	SOT23-5	CM	1	1	2.7	6	1500	0.6	280	250
CXSD62126	SOP-8	CM	1	3	4.3	14	500	0.8	70	70	500
CXSD62127	SOP-8P	CM	1	3	4.3	14	500	0.8	55	45	500
CXSD62128B	TDFN3x3-10			3	2.6	5.5	2000	0.8	110	110	460
CXSD62129	TDFN3x3-10	CM	2	1	2.7	6	1500	0.6	280	250	500
CXSD62129A	TDFN3x3-10	CM	2	1	2.7	6	1500	0.6	280	250
CXSD62130	TDFN2x2-6	CM	1	1	2.7	6	1500	0.6	280	250	25
CXSD62130A	TDFN2x2-6	CM	1	1	2.7	6	1500	0.6	280	250
CXSD62131	TDFN3x3-12	CM	2	1	2.7	6	1500	0.6	280	250	25
CXSD62131A	TDFN3x3-12	CM	2	1	2.7	6	1500	0.6	280	250
CXSD62131C	TDFN 3x3 12	CM	2	1	3	5.5	1500	0.6	280	250	30
CXSD62132	TQFN3x3-20	CM	3	2	2.9	5.5	1500	0.6	-	-	300
CXSD62133	TDFN2x2-8	CM	1	1	3.3	8	1500	0.6	280	250	25
CXSD62134	SOP-8	CM	1	2	4.5	24	340	0.925	110	110	1900
CXSD62135	SOP-8P	CM	1	3	4.5	24	340	0.925	110	110	1900
CXSD62136	SOP-8	CM	1	2	4.5	24	340	0.92	130	130	1900
CXSD62136B	SOP-8P	CM	1	2	4.5	24	340	0.92	130	130	1900
CXSD62137	SOP-8P	CM	1	3	4.5	24	340	0.92	85	85	1900
CXSD62138	SOP-8P	CM	1	4	4.5	24	340	0.8	85	85	1900
CXSD62139	TSOT-23-8A	CM	1	3	4.5	24	500	0.807	100	40	1000
CXSD62140	TSOT-23-8A	CM	1	3	4.5	24	500	0.807	100	40	1000
CXSD62141	TSOT-23-8A	CM	1	2	4.5	24	500	0.807	115	50	1000
CXSD62142	SOP-8P	CM	1	3	4.5	24	1300	0.925	110	110	1900
CXSD62143	SOP-8	CM	1	2	4.5	24	340	0.925	110	110	1900
CXSD62144	SOP-8P	CM	1	3	4.5	24	340	0.925	110	110	1900
CXSD62145	TSOT-23-8A	CM	1	2	4.5	24	500	0.807	115	50	500
CXSD62146	TSOT-23-8A	CM	1	3	4.5	24	500	0.807	100	40	500
CXSD62147	TSOT-23-6	COT	1	2	4.6	16	500	0.6	110	100	50
CXSD62148	TSOT-23-6	COT	1	2	4.6	16	500	0.8	95	40	50
CXSD62149	TSOT-23-6	COT	1	3	4.6	16	500	0.8	90	35	50
CXSD62150	TSOT-23-8A	CM	1	2.5	4.5	24	500	0.807	140	60	1000
CXSD62151	TSOT-23-6,TDFN2x2-6	COT	1	3	4.6	16	500	0.6	110	80	50
CXSD62152	SOP8P\|TDFN3x3-10	CM	1	2	2.5	6	1000	0.8	85	75	460
CXSD62153	SOP8P\|TDFN3x3-10	CM	1	3.2	2.5	6	1000	0.8	85	75	460
CXSD62154	SOP8P\|TDFN3x3-10	CM	1	4	2.5	6	500	0.8	85	75	460
CXSD62155	SOP-8P	CM	1	5	2.5	6	1000	0.6	65	55	460
CXSD62156	TDFN 2x2 12	CM	1	3.5	2.7	5.5	1320	0.6	70	60	40
CXSD62157	SOP-8	CM	1	2	4.5	24	340	0.8	110	110	1900
CXSD62158	SOP-8P	CM	1	3	4.5	24	340	0.8	110	110	1900
CXSD62159	TDFN3x3-10	CM	1	2	4.5	24	340	0.8	110	110	1900
CXSD62160	TDFN3x3-10	CM	1	3	4.5	24	340	0.8	110	110	1900
CXSD62161	TSOT-23-8A	CM	1	2	4.5	24	500	0.791	115	50	1000
CXSD62162	TSOT-23-8A	CM	1	3	4.5	24	500	0.791	100	40	1000
CXSD62162S	TSOT-23-8A	CM	1	3	7	24	500	0.791	100	40	1000
CXSD62163	TDFN 2x2-6	CM	1	1	3	5.5	1500	0.6	260	230	30
CXSD62164	SOT23-5,TSOT23-5A	CM	1	1.2	3	5.5	1500	0.6	260	230	30
CXSD62164A	SOT23-5,TSOT23-5A	CM	1	1	3	5.5	1500	0.6	260	230	30
CXSD62164C	SOT23-5,TSOT23-5A	CM	1	1	3	5.5	1500	0.6	260	230	30
CXSD62165	SOT23-5,TSOT23-5A	CM	1	1.2	3	5.5	1500	0.6	260	230	30
CXSD62165C	SOT23-5,TSOT23-5A	CM	1	1	3	5.5	1500	0.6	260	230	30
CXSD62166	TSOT-23-8A	CM	1	2	4.5	24	800	0.807	115	50	1000
CXSD62167	TSOT-23-8A	CM	1	3	4.5	24	800	0.807	100	40	1000
CXSD62168	TSOT-23-8A	CM	1	2	4.5	24	500	0.807	115	50	1000
CXSD62169	TDFN5x5-16	CM	1	4	4.5	26	380	0.8	22	-	1000
CXSD62170	TDFN 2x2-8	CM	1	0.8	4.5	5.5	1700 ~ 2300	0.6			300
CXSD62171	TQFN 4x4 22	COT	1	8	2.7	28	100~1000	0.8	30	9	700
CXSD62172	TQFN4x4-23	COT	1	6	2.7	28	100~1000	0.8	30	9	750
CXSD62172A	TQFN 4x4 23	COT	1	8	2.7	28	100~1000	0.8	30	9	700
CXSD62172B	TQFN 4x4 23	COT	1	8	2.7	28	100~1000	0.8	30	9	700
CXSD62172C	TQFN 4x4 23	COT	1	10	2.7	28	100~1000	0.8	27	7	700
CXSD62172CA	TQFN 4x4 23	COT	1	10	2.7	28	100~1000	0.8	27	7	700
CXSD62172D	TQFN 4x4 23	COT	1	10	2.7	28	100~1000	0.8	27	7	700
CXSD62172DA	TQFN 4x4 23	COT	1	10	2.7	28	100~1000	0.8	27	7	700
CXSD62172E	TQFN 4x4 23	COT	1	8	2.7	28	100~1000	0.8	30	9	25
CXSD62173	TQFN 4x4 23	COT	1	6	2.7	28	100~1000	0.8	30	12	700
CXSD62173A	TQFN 4x4 23	COT	1	6	2.7	28	100~1000	0.8	30	12	700
CXSD62173C	TQFN 4x4 23	COT	1	6	2.7	28	100~1000	0.8	30	12	700
CXSD62173D	TQFN 4x4 23	COT	1	6	2.7	28	100~1000	0.8	30	12	700
CXSD62173E	TQFN 4x4 23	COT	1	8	2.7	28	100~1000	0.8	30	12	25
CXSD62174	TQFN5x5 30	COT	1	12	2.7	28	300~1000	0.8	9.7	5.2	700
CXSD62174A	TQFN5x5 30	COT	1	12	2.7	28	300~1000	0.8	14.6	7.8	750
CXSD62175	TQFN5x6-28	COT	1	8	3	25	500	0.75	12	12	400
CXSD62176	TDFN3x3-10	CM	1	3	2.6	6	1000	0.6	65	55	460
CXSD62176E	TDFN3x3-10	CM	1	3	2.6	5.5	1000	0.6	65	55	65
CXSD62177	TDFN3x3-10	CM	1	3	2.6	6	1000	0.6	75	55	460
CXSD62177A	TDFN3x3 10	CM	1	3	2.6	6	1000	0.8	75	55	460
CXSD62177B	TDFN3x3 10	CM	1	3	2.6	6	1000	0.8	75	55	460
CXSD62178	TQFN3x3-16	COT	1	8	6	28	500	0.6	24	14	80
CXSD62179	TSOT23-6	CM	1	1	2.7	5.5	1500	0.6	280	250	25
CXSD62180	SOT23-6, TDFN2x2 8	CM	1	3	2.6	6	1000	0.6	110	80	50
CXSD62181	TDFN3x3-10	CM	1	3	4.5	24	600	0.8	70	70	400
CXSD62182	TQNF4x4 32	COT	1	8	4.5	26	400~550	0.75	75	75	230
CXSD62183	TQN 4x4 26	COT	2	8	4.5	25	400~1400 (VDDQ) 1000(VPP)	0.6V for VPPSMBUS for VDDQ=1.0V~1.2V	20(VDDQ) 200(VPP)	7(VDDQ) 200(VPP)	270

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CXSD62152同步降压转换器85mΩ高端和75mΩ低功率mosfet

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