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| Preliminary Datasheet LPW5202 Power Distribution Switches General Description The LPW5202 is an integrated 120m power switch for self-powered and bus-powered Universal Series Bus (USB) applications. A built-in charge pump is used to drive the N-Channel MOSFET that is free of parasitic body diode to eliminate any reversed current flow across the switch when it is powered off. Its low quiescent current (19A) and small package (SOT-23-5) is particularly suitable in battery-powered portable equipment. Several protection functions include soft start to limit inrush current during plug-in, current limiting at 1.5A to meet USB power requirement, and thermal shutdown to protect damage under over current conditions. Features 120m Low Rdson,High-side NMOSFET Guaranteed 0.8A Continuous Current 2.1V to 6V Input Voltage Low 19uASupply Current Soft Start Function Built-In Short-Circuit Protection Built-in Thermal Protection RoHS Compliant and 100% Lead (Pb)-Free Typical Application Circuit Order Information LPW5202 F: Pb-Free Package Type B5: SOT23-5 Marking Information Please see website. Applications Power Switch USB Device Battery Charger Circuits LPW5202 - Ver. 1.0 Datasheet OCT.-2006 Page 1 of 8 Preliminary Datasheet Functional Pin Description P a c k a g e Ty p e Pin Configurations LPW5202 SOT23-5 PIN NAME DESCRIPTION 1,5 2 3 4 Vout GND VIN EN Output pin Ground Charge pump input, connect to battery or supply Device enable (active high). Function Block Diagram LPW5202 - Ver. 1.0 Datasheet OCT.-2006 Page 2 of 8 Preliminary Datasheet Absolute Maximum Ratings LPW5202 Input Voltage to GND (VINA, VINB) ---------------------------------------------------------------------------- 7V EN Voltage ---------------------------------------------------------------------------------------------0.3V to 7V Operating Junction Temperature Range (TJ) ----------------------------------------------------20 to 100 Maximum Soldering Temperature (at leads, 1 0sec) ----------------------------------------------------- 300 HBM(Human Body Mode)-------------------------------------------------------------------------------------- 8KV Thermal Information Maximum Power Dissipation (PD) ------------------------------------------------------------------------ 0.25W Thermal Resistance (JA) ---------------------------------------------------------------------------------- 250/W Electrical Characteristics (Over recommended operating conditions unless specified otherwise) VINA =3.6V,EN=High, TA=25 ) Symbol VIN RDS(ON) Parameter Input Voltage Output NMOSFET RDS(ON) Conditions LPW520 Min. Typ. Max. 2.1 6 120 19 28 1 0.4 1.5 Unit V m uA A V V IQ ISHDN VEN(L) VEN(H) IEN Quiescent Current Shutdown Current Enable Threshold Low Enable Threshold High Input Low Current Vin=3V ENB = GND VINB = VENB = 5.5V -1 1 A LPW5202 - Ver. 1.0 Datasheet OCT.-2006 Page 3 of 8 Preliminary Datasheet Typical Operating Characteristics LPW5202 LPW5202 - Ver. 1.0 Datasheet OCT.-2006 Page 4 of 8 Preliminary Datasheet LPW5202 LPW5202 - Ver. 1.0 Datasheet OCT.-2006 Page 5 of 8 Preliminary Datasheet LPW5202 LPW5202 - Ver. 1.0 Datasheet OCT.-2006 Page 6 of 8 Preliminary Datasheet LPW5202 LPW5202 - Ver. 1.0 Datasheet OCT.-2006 Page 7 of 8 Preliminary Datasheet Packaging Information LPW5202 LPW5202 - Ver. 1.0 Datasheet OCT.-2006 Page 8 of 8 |
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