TLV1117LV中文资料1A 低压降稳压器数据手册TI规格书

描述 Description

The TLV1117LV series of low-dropout (LDO) linear regulators is a low input voltage version of the popular 1117 voltage regulator. The TLV1117LV is an extremely low-power device that consumes 500 times lower quiescent current than traditional 1117 voltage regulators, making it suitable for applications that mandate very low standby current. The TLV1117LV family of LDOs is also stable with 0 mA of load current; there is no minimum load requirement, making it an ideal choice for applications where the regulator is required to power very small loads during standby in addition to large currents on the order of 1 A during normal operation. The TLV1117LV offers excellent line and load transient performance, resulting in very small magnitude undershoots and overshoots of output voltage when the load current requirement changes from less than 1 mA to more than 500 mA. A precision bandgap and error amplifier provides 1.5% accuracy. A very high power-supply rejection ratio enables usage of the device for post-regulation after a switching regulator. Other valuable features include low output noise and low-dropout voltage. The device is internally compensated to be stable with 0-Ω equivalent series resistance (ESR) capacitors. These key advantages enable the use of cost-effective, small-size ceramic capacitors. Cost-effective capacitors that have higher bias voltages and temperature derating can also be used if desired. The TLV1117LV series is available in a SOT-223 package.

特性 Features

• 1.5% Typical Accuracy
• Low IQ: 100 µA (max)
• 500 times lower than standard 1117 devices

• VIN: 2.0 V to 5.5 V
• Absolute maximum VIN = 6.0 V

• Stable with 0-mA Output Current
• Low Dropout: 455 mV at 1 A for VOUT = 3.3 V
• High PSRR: 65 dB at 1 kHz
• Minimum Ensured Current Limit: 1.1 A
• Stable with Cost-Effective Ceramic Capacitors:
• With 0-Ω ESR

• Temperature Range: –40°C to +125°C
• Thermal Shutdown and Ovecurrent Protection
• Available in SOT223 Package