TPS2140IPWP

可调LDO和开关，双电流限制USB高功率外围设备的电源管理 ADJUSTABLE LDO AND SWITCH WITH DUAL CURRENT LIMIT FOR USB HIGH-POWER PERIPHERAL POWER MANAGEMENT

DESCRIPON

The TPS2140/41/50/51 is a USB 1.0 and 2.0 Specification-compatible IC containing a dual-current limiting power switch and an adjustable low dropout regulator LDO. Both the switch and LDO limit inrush current by controlling the turnon slew rate. The unique dual-current-limiting feature of the switch allows USB peripherals to utilize high-value capacitance at the output of the switch, while keeping the inrush current low. During turnon, the switch limits the current delivered to the capacitive load to less than 100 mA.

FEATURES

Complete Power Management Solution for USB High-Power Peripherals

250 mA Low-Dropout Regulator LDO With Enable and 325 mA Typ Current Limit

LDO Supports 2.7V to 5.5V VIN and 0.9V to 3.3V Adjustable VOUT

40 mΩTyp High-Side MOSFET With Dual Current Limit

Undervoltage Lockout and Power Good for LDO and Switch

CMOS- and TTL-Compatible Enable Inputs

85 µA Typ Supply Current

5 µA Typ Standby Supply Current

Available in 14-Pin HTSSOP PowerPAD™

–40°C to 85°C Ambient Temperature Range

Alternative to TPS2148/58 3.3-V LDO With 3.3-V Switch and 5-V Switch