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Technical content
Features
200mΩ On-Resistance Current Limit : 275mA (G558A/G559A), 175mA (G558B/G559B), 250mA(G558C/G559C), 150mA (G558D/G559D) 2.3V to 5.5V Supply Range Undervoltage Lockout 85μA Supply Current 30μA Latch-OFF Current 1μA Maximum Shutdown Current Latch-off Function(G558X) and Auto-Restart Function(G559X) Active High Enable Thermal-Shutdown Protection Reverse-Current Limit Protection 40ms Blanking Time 280ms Auto-Restart Time(G559X) FLAG Function Fast Current-Limit Response Time TSOT-23-5 Package
Applications
PDAs Cell Phones GPS Systems Hand-Held Devices General Description The G558/G559 family of switches feature internal current limiting to prevent host devices from being damaged due to faulty load conditions. These analog switches have a low 0.2 Ω on-resistance and operate from a 2.3V to 5.5V input voltage range. They are available with guaranteed 200mA and 100mA current limits, making them ideal for load-switching applica- tions. When the switch is on and a load is connected to the port, a typical blanking time of 40ms ensures that the transient voltages settle down. If after this blanking time the load current is greater than the current limit, the G558 enter a latch-off state where the switch is turned off and FLAG is issued to the microprocessor. The switch can be turned on again by cycling the power or the ON pin. The ON pin of G558 is active high. The G559 have an auto-restart feature where the switch turns off after the blanking time and then con- tinuously checks to see if the overload condition is present. The switch remains on after the overload con- dition disappears. The G558/G559 is available in TSOT-23-5 package.
Ordering Information
OPTIONS CURRENT LIMIT TEMP. RANGE PACKAGE (Green) G558ATO1U 558Ax Latch-off 275mA -40°C~+105°C TSOT-23-5 G558BTO1U 558Bx Latch-off 175mA -40°C~+105°C TSOT-23-5 G559ATO1U 559Ax Auto-Restart 275mA -40°C~+105°C TSOT-23-5 G559BTO1U 559Bx Auto-Restart 175mA -40°C~+105°C TSOT-23-5 G558CTO1D 558Cx Latch-off 250mA -40°C~+105°C TSOT-23-5 G558DTO1D 558Dx Latch-off 150mA -40°C~+105°C TSOT-23-5 G559CTO1D 559Cx Auto-Restart 250mA -40°C~+105°C TSOT-23-5 G559DTO1D 559Dx Auto-Restart 150mA -40°C~+105°C TSOT-23-5 Note: TO: TSOT-23-5 1: Bonding Code D: Tape & Reel Pin Configuration Typical Application Circuit ON TSOT-23-5 5VIN