600毫安输出电流6MHz降压开关稳压器固定频率2.5V至5.5V输入CXSD62334输出电压可编程低纹波轻载PFM模式

CXSD62334是一个6MHz的降压开关稳压器，具有600毫安的输出电流能力，能够从2.5伏到5.5伏的输入电压源输出固定的电压。使用同步整流结构，CXSD62334能够提供90%的峰值效率，当负载电流低至1毫安时，效率保持在80%以上。稳压器以6MHz的额定固定频率工作，输出电感和输出电容的外部元件值分别降低至470nH和4.7μF。在中等和较轻的负载下，采用脉冲频率调制（PFM）以22μa的典型静态电流在节电模式下运行器件。即使在如此低的静态电流下，器件在大的负载波动期间也表现出良好的瞬态响应。在较高的负载下，系统自动切换到固定频率控制，工作频率为6MHz。

目录

1.产品概述       2.产品特点     

3.应用范围       4.技术规格书下载（PDF文档）

5.产品封装       6.电路原理图  

7.相关产品

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The CXSD62334 is a 6MHz, step-down switching voltage regulator, with 600mA output current capability, that delivers a fixed output from an input voltage supply of 2.5V to 5.5V. Using an architecture with synchronous rectification, the CXSD62334 is capable of delivering a peak efficiency of 90%, while maintaining efficiency over 80% at load currents as low as 1mA.

The regulator operates at a nominal fixed frequency of 6MHz, which reduces the value of the external components to as low as 470nH for the output inductor and 4.7μF for the output capacitor.

At moderate and light loads, pulse frequency modulation (PFM) is used tooperate the device in power-save mode with a typical quiescent current of 22μA. Even with such a low quiescent current, the part exhibits excellent transient response during large load swings. At higher loads, the system automatically switches to fixed-frequency control, operating at 6MHz. Its output could be programmed for four different voltages, as well as two different on/off delay times, making it ideal for designing primary supply.

The CXSD62334 is available in Green TDFN-2×2-6L package. It operates over an ambient temperature range of -40℃ to +85℃.

   产品特点 返回TOP

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• 600mA Output Current Capability

• 22μA Typical Quiescent Current

• 6MHz Fixed Frequency Operation

• Best-in-Class Load Transient Response

• Best-in-Class Efficiency

• 2.5V to 5.5V Input Voltage Range

• Precise Preset Voltage Selectable from 4 Preset

  Voltages in 1.02V ~ 3V Range

• Output Voltage Programmable in Operation

• Low Ripple Light-Load PFM Mode

• Internal Soft-Start

• Input Under-Voltage Lockout (UVLO)

• Thermal Shutdown and Overload Protection

• Output Discharge

• Available in Green TDFN-2×2-6L Package

• -40℃ to +85℃ Operating Temperature Range

   应用范围 返回TOP

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产品封装图 返回TOP

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电路原理图 返回TOP

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同步整流降压转换器
Product	CH	Enable	VCC (Min)V	VCC (Max)V	VOUT(V)	IOUT(mA)	Frequency (kHz)	Iq (mA)	SHDN  Iq(μA)	Package
CXSD62327	1	L	3	5.5	adj	3000	adj(300 to  2000)	0.41	2	TDFN-3x3-10L
CXSD62328	1	H	2.5	5.5	3.3/adj	2000	1400	0.3	2	TDFN-3x3-10L
CXSD62329	1	H	2.5	5.5	1.2/1.8/3.3/adj	800	1600	0.03	1	TSOT-23-5
CXSD62330	1	H	2.5	5.5	1.2/1.8/3.3/adj	800	1600	0.03	1	TSOT-23-5 TDFN-2x2-6L
CXSD62331	1	H	2.5	5.5	1.2/1.8/3.3/adj	2000	1400	0.055	2	TDFN-3x3-10L
CXSD62332	1	H	2.7	5.5	adj	1200	1600	0.03	1	TDFN-3x3-10L
CXSD62333	1	H	2.7	5.5	adj	1200	1600	0.03	1	TDFN-2x3-8L
CXSD62334	1	H	2.5	5.5	adj	600	6000	0.022	1	TDFN-2x2-6L
CXSD62335	1	H	2.5	5.5	0.6/0.8/1.0/1.1/1.15 /1.2/1.5/1.6/1.8/2.5/ 2.8/3.0/3.3	600	6000	0.022	1	TDFN-2x2-6L   WLCSP-1.21x0.81-6B
非同步降压转换器
Product	CH	Enable	VCC (Min)V	VCC MAX(V)	VOUT(V)	IOUT(mA)	Frequency (kHz)	Iq (mA)	SHDN  Iq(μA)	Package
CXSD62336	1	H	4.5	28.5	adj	3000	385	0.8	18	SOIC-8(EP)
CXSD62337	1	H	4.5	28.5	adj	3000	1400	0.8	18	SOIC-8(EP)
CXSD62338	1	H	4.5	38	adj	2000	385	0.8	18	SOIC-8(EP)
CXSD62339	1	H	4.5	38	adj	2000	1400	0.8	18	SOIC-8(EP)
CXSD62340	1	H	4.5	18	adj	3000	1400	0.8	18	SOIC-8(EP)