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TPS2140 데이터시트 - Texas Instruments

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TPS2140 ADJUSTABLE LDO AND SWITCH WITH DUAL CURRENT LIMIT FOR USB HIGH-POWER PERIPHERAL POWER MANAGEMENT TI
Texas Instruments TI
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DESCRIPTION
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 mΩ(Typ) 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

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