产品简介：The BL9352A/BL9353 is a wide input range, highefficiency, and high frequency DC-to-DC stepdown switching regulator, capable of delivering up to 0.6A of output current.
With a fixed switching frequency of 1.6MHz, this current mode PWM controlled converter allows the use of small external components, such as ceramic input and output caps, as well as small inductors.
Including cold crank and double battery jumpstarts, the minimum input voltage may be as low as 4.5V and the maximum up to 45V, with even higher transient voltages. With these high input voltages, linear regulators cannot be used for high supply currents without overheating the regulator. Instead, high efficiency switching regulators such as BL9352A must be used to minimize thermal dissipation.
BL9352A is available SOT23-6 Packages.
优势特点：

• BL9352A VFB=0.795V; BL9353 VFB=0.765V

• Wide Input Operating Range from 4.5V to 45V

• 420mΩ internal NMOS

• Up to 95% Efficiency at 16V in 12V out L=47μH with 300mA loading

• Internal compensation

• Capable of Delivering 600mA continuous output current

• Fixed 1.6MHz PWM operation

• Internal soft start

• Output voltage adjustable down to 0.795V

• Cycle-by-cycle current limit

• Current Mode control

• Short-circuit protection

• Logic Control Shutdown EN can be short to VIN

• Thermal shutdown and UVLO

• Available in SOT23-6 Package

BL9352A典型应用条件如下所示：

BL9352A：高压45V，600mA，1.6MHz，SOT23-6，P2PMP2451

BL8032S：中压16V，2A，500KHz，SOT23-6，P2P:SY8120

BL8531C：升压DCDC,SOT89-5/23/25,外挂MOS,Vin0.8-5.5V,400KHz

BL8542CCB5TR：同步升压DCDC,SOT25,同步升压,Vin0.7V+,1MHz,500mA

BL8536:SOT89/SOT23-3,同步，Vout=1.8~3.6V固定输出

BL8506：低电压检测，Vin0.7-10V,VDET0.9-6V,SOT23/89/25P2PR3111/MAX808

BL8518：复位IC，Vin1-6V,VDET1.6-5V,SOT23/25P2PR3110/MAX809

BL8064：超低静态功耗LDO1uA，Vin1.5-8V,200mA,SOT23-3/5,P2P:XC6206(特瑞仕)--主要用于电池产品

BL8061/2：LDO,Max:16V,250mA,SOT23/23-5/89,Iq:2uA

BL1117：LDO,MAX15V,1A,SOT223/TO252(AH1117高性价比)

BL0937：高，静态功耗6mW；内置振荡电路；外围成本低；体积小；SOP8封装，电量计量

BL2513A/2514A:识别IC,双路/单路BC1.2识别，外围简单P2P:TPS2513/2514，主要应用于移动电源、插座等

BL23P42:8Bit集成12位ADC及PWM，主要竞争对手:HR7P155，SN2711，主要应用于小家电、电源管理

BL21P01:8BitOTPMCU，应用广泛，主要做控制用

BL23M1610：8BitMTP，可以当Flash使用

BLM3401：PMOS,30V,4.2A,72mR,SOT23

BLM3400：NMOS,30V,5.8A,45mR,SOT23

BLM8205A/B：双NMOS,20V6A,21mR/16mR,TSSOP8，大量出货

BL24CXXA：EEPROM,Vin1.8-5.5V,DIP8SOP8TSSOP8(价格优势大）

BL1551：单路模拟开关，兼容FSA/BCT3157（飞兆、广芯电子）

BL1530/1532：高速模拟开关USB2.0(480Mbps)兼容SGM7222/7227、FSUSB30/42（飞兆）(GPS/网通)

BL55024:具有4背极和15段共60位的显示数据存贮器，适用于常用低占空比的字符/图形式液晶屏幕

BL55072:具有4背极和36段极共144位元的输出能力，适用于常用低占空比的字符/图形式液晶屏幕

BL5372:RTC，（兼容理光RS5C372A）---低功耗I2C封装SOP8/TSSOP8

BL1585B:RS-485接口IC，具有失效保护功能、低功耗、限摆率（边沿斜率限制，降低EMI，减小线路损耗

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