SC7002SAER

SC7002 DATASHEET SOUTHCHIP SEMICONDUCTOR SOUTHCHIP CONFIDENTIAL 12 mΩ Power Switch with Curernt Limit and Charging Port Controller 1 DESCRIPTION 2 FEATURES The SC7002 is a power switch which integrates an ultra-low Rdson (12mΩ) N-channel MOSFET. It is designed for USB port applications or other applications which require high current switch. It provides current limit function, and the current limit can be programmable through an external resistor. • 12mΩ Ultra-low Rdson NMOS Switch • Programmable Current Limit • ± 5% Current Limit Accuracy at 2.7A • Built-in Soft-Start • Ultra-low Operation Current The SC7002 also integrates USB charging port controller function. It can support traditional type A USB port with DP and DM signals. It monitors the DP/DM data line voltage, and automatically supports the DCP schemes for Battery Charging specification (BC1.2), the divider Mode and 1.2V/1.2V Mode. • USB Charging Port Controller Function The SC7002 also supports various protections, including over voltage protection, under voltage protection, short circuit protection, and thermal shutdown protection. The SC7002 requires a minimum number of external components to complete USB switch and charging port solution. It is available in TSOT23-6 package. 3 APPLICATIONS • • • • USB chargers USB HUB USB power supplies USB peripherals ✓ Battery Charging specification BC1.2 for DCP ✓ Chinese telecommunication industrial standard YD/T 1591-2009 ✓ D+/D- option for Apple device (2.4A) ✓ D+/D- option for Samsung device • Input Under Voltage Protection • Input Over Voltage Protection • Over Current Protection • Short Circuit Protection • Thermal Shutdown Protection • ±8kV HBM ESD Rating for USB IO pins • TSOT23-6 package 4 Copyright © 2018, Southchip Semiconductor Technology (Shanghai) Co., Ltd. ORDERING INFORMATION Part Number Package Dimension SC7002SAER TSOT23-6 2.9*2.8*0.95 mm SC7002 DATASHEET SOUTHCHIP SEMICONDUCTOR 5 SOUTHCHIP CONFIDENTIAL Typical Application Circuit 4.7 F Power Supply DCDC or ACDC 470 F 4.7 F GND VOUT GND DP ISET DM Riset Type-A USB VIN VOUT Figure 1 SC7002 typical application circuit 6 Pin Configurations and Functions TOP VIEW 1 VIN GND 2 ISET 3 SC7002 6 VOUT 5 DP 4 DM Table 1 Pin description Terminals NAME I/O Description 1 VIN I 2 GND IO 3 ISET I 4 DM IO DMpin for type A USB port interface 5 DP IO DP pin for type A USB port interface 6 VOUT O Output of the switch Input to the switch Ground Set the current limit value Copyright © 2018, Southchip Semiconductor Technology (Shanghai) Co., Ltd. 2 SC7002 DATASHEET SOUTHCHIP SEMICONDUCTOR 7 SOUTHCHIP CONFIDENTIAL Electrical Specifications 7.1 Absolute Maximum Ratings Over operating free-air temperature range (unless otherwise noted)(1) Min. Max. Unit VIN, VOUT -0.3 7 V DP, DM, -0.3 VIN+0.3V or 5.7V V ISET -0.3 5.5 V TJ Operating junction temperature -40 150 °C Tstg Storage temperature -65 150 °C TL Lead Temperature 260 °C TD Continuous power dissipation (TA=25°C) 1.25 W TΘJA(3) Junction to ambient thermal resistance 100 °C/W TΘJC(3) Junction to case thermal resistance 12 °C/W Voltage(2) (1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. (2) All voltages are with respect to network ground terminal. (3) Measured on JESD51-7, 4-layer PCB. 7.2 ESD Ratings Human-body Model (HBM) Min. Max. Unit All pins except DP / DM -4 4 kV DP / DM -8 8 kV -1000 1000 V (2) VESD(1) Charged-device Model (CDM) (3) (1) Electrostatic discharge (ESD) to measure device sensitivity and immunity to damage caused by assembly line electrostatic discharges into the device. (2) Level listed above is the passing level per ANSI, ESDA, and JEDEC JS-001. JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. (3) Level listed above is the passing level per EIA-JEDEC JESD22-C101. JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process. 7.3 Recommended Operation Conditions Min. Typ. Max. Unit 4 5 5.6 V VIN VIN votlage range CIN VIN capacitor 4.7 VOUTcapacitor 3.3 22 µF TA Operating ambient temperature -40 85 C TJ Operating junction temperature -40 125 C COUT Copyright © 2018, Southchip Semiconductor Technology (Shanghai) Co., Ltd. µF 3 SC7002 DATASHEET SOUTHCHIP SEMICONDUCTOR 7.4 SOUTHCHIP CONFIDENTIAL Electrical Characteristics TJ= 25°C and VIN = 5V and VOUT = 5V unless otherwise noted. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT 5.6 V SUPPLY VOLTAGE VIN Operating voltage VIN_UVLO Under threshold IQ 4 Rising 3.7 3.8 3.9 V Hysteresis 0.5 0.6 0.7 V Quiescent current VIN=5V, No load 60 92 120 μA RDS_ON Rdson of switch VIN=5V TSS Soft start time voltage lockout POWER FET VIN = 5V, turning on, no load VIN = 5V, turning on, IOUT = 2.4A 12 mΩ 1 ms 1.5 ms CURRENT LIMIT VREF Reference voltage ILIM Current limit accuracy 1.176 1.2 1.224 V 2.65 2.75 2.88 A Rising edge, over VOUT, VOUT = 5V 5.6 5.8 6 V Falling edge 5.5 5.7 5.9 V RISET=0 5.5 RISET = 150 KΩ PROTECTION VIN_OVP VIN OVP protection IML Maximum current limit VSC-th VOUT short circuit protection threshold THIC_ON OCP on time of hiccup THIC_OFF OCP off time of hiccup TSD Thermal shutdown temperature threshold 3.4 VOUT