PDF《TPS74401 具有可编程软启动功能的 3.0A Ultra-LDO》

10 k? to

1 M? from this pin to a supply up to 5.5 V. The supply can be higher than the input voltage. Alternatively, the PG pin can be left floating if output monitoring is not necessary. SS

1 15 ― Soft-start pin. A capacitor connected on this pin to ground sets the start-up time. If this pin is left floating, the regulator output soft-start ramp time is typically

100 ?s.

6 TPS74401 ZHCSAL3R CDECEMBER 2005CREVISED APRIL

2017 www.ti.com.cn Copyright ? 2005C2017, Texas Instruments Incorporated (1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

6 Specifications 6.1 Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted)(1) MIN MAX UNIT VIN, VBIAS Input voltage C0.3

6 V VEN Enable voltage C0.3

6 V VPG Power-good voltage C0.3

6 V IPG PG sink current

0 1.5 mA VSS SS pin voltage C0.3

6 V VFB Feedback pin voltage C0.3

6 V VOUT Output voltage C0.3 VIN + 0.3 V IOUT Maximum output current Internally limited Output short-circuit duration Indefinite PDISS Continuous total power dissipation See Thermal Information TJ Operating junction temperature C40

150 °C Tstg Storage temperature C55

150 °C (1) JEDEC document JEP155 states that 500-V HBM allows saf........