商品名称:TI 德州仪器 电源管理 低压降稳压器 TPS7333QDR
商品型号:TPS7333QDR
品牌:德州仪器(TI)
封装规格:SOP
商品类别:
二级分类:电源管理
商品批号:0819P/QX/A/PB-FREE
货期:现货
商品编号:
商品重量:0.001kg
库存数量:2270 个
单价:
产品描述:
The TPS73xx devices are members of a family of micropower low-dropout (LDO) voltage regulators. They are differentiated from the TPS71xx and TPS72xx LDOs by their integrated delayed microprocessor-reset function. If the precision delayed reset is not required, the TPS71xx and TPS72xx should be considered.
The RESET\ output of the TPS73xx initiates a reset in microcomputer and microprocessor systems in the event of an undervoltage condition. An internal comparator in the TPS73xx monitors the output voltage of the regulator to detect an undervoltage condition on the regulated output voltage.
If that occurs, the RESET\ output (open-drain NMOS) turns on, taking the RESET\ signal low. RESET\ stays low for the duration of the undervoltage condition. Once the undervoltage condition ceases, a 200-ms (typ) time-out begins. At the completion of the 200-ms delay, RESET\ goes high.
An order of magnitude reduction in dropout voltage and quiescent current over conventional LDO performance is achieved by replacing the typical pnp pass transistor with a PMOS device.
Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (maximum of 35mV at an output current of 100 mA for the TPS7350) and is directly proportional to the output current (see Figure1). Additionally, since the PMOS pass element is a voltage-driven device, the quiescent current is low and remains constant, independent of output loading (typically 340 uA over the full range of output current, 0 mA to 500mA). These two key specifications yield a significant improvement in operating life for battery-powered systems.
The LDO family also features a sleep mode; applying a logic high signal to EN\ (enable\) shuts down the regulator, reducing the quiescent current to 0.5 uA maximum at TJ = 25°C.
The TPS73xx is offered in 2.5-V, 3-V, 3.3-V, 4.85-V, and 5-V fixed-voltage versions and in an adjustable version (programmable over the range of 1.2 V to 9.75 V). Output voltage tolerance is specified as a maximum of 2% over line, load, and temperature ranges (3% for the 2.5 V and the adjustable version). The TPS73xx family is available in PDIP (8 pin), SO (8 pin) and TSSOP (20 pin) packages. The TSSOP has a maximum height of 1.2mm.
封装信息:
封装 | 引脚 | SOIC (D) | 8 |
---|---|
包装数量 | 包装: | 2,500 | LARGE T&R |
工作温度范围 (℃) | -40 to 125 |
产品特性:
Available in 2.5-V, 3-V, 3.3-V, 4.85-V, and 5-V Fixed-Output and Adjustable Versions
Integrated Precision Supply-Voltage Supervisor Monitoring Regulator Output Voltage
Active-Low Reset Signal with 200-ms Pulse Width
Very Low Dropout Voltage...Maximum of 35 mV at IO = 100 mA (TPS7350)
Low Quiescent Current - Independent of Load...340 uA Typ
Extremely Low Sleep-State Current, 0.5 uA Max
2% Tolerance Over Full Range of Load, Line, and Temperature for Fixed-Output Versions
Output Current Range of 0 mA to 500 mA
TSSOP Package Option Offers Reduced Component Height For Critical Applications
The TPS7325 has a tolerance of ±3% over the full temperature range.
The
TPS71xx and the TPS72xx are 500-mA and 250-mA output regulators
respectively, offering performance similar to that of the TPS73xx but
without the delayed-reset function. The TPS72xx devices are further
differentiated by availability in 8-pin thin-shrink small-outline
packages (TSSOP) for applications requiring minimum package size.
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