MAX1832：高效率、升压型转换器，带有反接电池保护

The MAX1832-MAX1835 are high-efficiency step-up converters with complete reverse battery protection that protects the device and the load when the battery is reversed. They feature a built-in synchronous rectifier, which allows for over 90% efficiency and reduces size and cost by eliminating the need for an external Schottky diode. These step-up converters operate from a +1.5V to +5.5V input voltage range and deliver up to 150mA of load current. The MAX1833EUT/MAX1835EUT (SOT devices) have a fixed 3.3V output voltage. The MAX1833ETT30 (TDFN device) has a fixed 3.0V output voltage. The MAX1832/MAX1834 have adjustable outputs from +2V to +5.5V. In shutdown, the MAX1832/MAX1833 connect the battery input to the voltage output, allowing the input battery to be used as a backup or real-time clock supply when the converter is off (see Selector Guide). MAX183_EUT devices are available in a miniature 6-pin SOT23 package. The MAX1833ETT30 is available in a 3mm x 3mm thin DFN package. The MAX1832EVKIT is available to speed designs.

关键特性

Reverse Battery Protection for DC-DC Converter and Load
Up to 90% Efficiency
No External Diode or FETs Needed
Internal Synchronous Rectifier
4µA Quiescent Current
<1µA Shutdown Supply Current
+1.5V to +5.5V Input Voltage Range
Accurate active-low SHDN Threshold for Low-Battery Cutoff
BATT Connected to OUT in Shutdown for Backup Power (MAX1832/MAX1833)
RST-bar Output (MAX1833/MAX1835)
Fixed 3.3V/3.0V Output Voltage
Adjustable Output Voltage (MAX1832/MAX1834)
Up to 150mA Output Current
Tiny 6-Pin SOT23 Package
Tiny 6-Pin Thin QFN Package (MAX1833ETT30)

MAX1832、MAX1833、MAX1834、MAX1835：引脚配置

应用

备用电池
无绳电话
数码相机
手持式仪表
本地3.3V至5V转换电源
医疗诊断设备
寻呼机
PC卡
远端无线发送器

数据手册DataSheet

语言	下载文件	备注
英文	MAX1832-MAX1835.pdf	Rev 2; 07/2005

关键参数

Part Number	V_IN (V)	V_IN (V)	V_OUT1 (V)	V_OUT1 (V)	Preset V_OUT (V)	I_OUT1 (A)	Output Adjust. Method	Switch Type	Synchronous Switching	I_CC (mA)	Shutdown Mode Supply Current (µA)	DC-DC Outputs	Oper. Freq. (kHz)	Package/Pins	Budgetary Price
Part Number	min	max	min	max	Preset V_OUT (V)	max	Output Adjust. Method	Switch Type	Synchronous Switching	typ	max	DC-DC Outputs	Oper. Freq. (kHz)	Package/Pins	See Notes
MAX1832	1.5	5.5	2	5.5	-	0.15	Resistor	Internal	Yes	0.004	1	1	500	SOT/6	$2.18 @1k
MAX1833			3.3	3.3	3.3		Preset							SOT/6 TDFN-EP/6
MAX1834			2	5.5	-		Resistor							SOT/6

开发工具

MAX1833EVKIT

技术资料

订购型号

型号	状况	封装	温度	RoHS/无铅
MAX1832EUT#G16	生产中	SOT,；6引脚；9mm²	-40°C至+85°C
MAX1832EUT#TG16	生产中	SOT,；6引脚；9mm²	-40°C至+85°C
MAX1832EUT-T	停止供货	SOT,；6引脚；9mm²	-40°C至+85°C	RoHS/无铅：否