XC6192 Series ETR33010-002 Power saving Push Button Load switch GENERAL DESCRIPTION The XC6192 series are the Push Button load switch with functions best suitable for battery operated devices. The built-in high side switch is turned on by the Push Button (Turning off is also possible on the XC6192A type.) and turned off by the level signal into the SHDN pin from the MCU or the like. In addition to these functions, this IC is equipped with output capacitor inrush current limiting function and short-circuit protection function, realizing an intelligent load switch. The high side switch is turned on and latched by inputting signal from the Push Button of the device to the SW pin. It is possible to shut down (OFF) by inputting a 1-pulse signal of level from the MCU or the like to the SHDN pin. This realizes (*1) a main switch of battery operated devices easily. The leak current at shutdown is so small, which is 10nA(Typ.), that this IC will contribute to reducing the discharge of the battery and making shelf life longer of the devices after shipping as well as functioning as a main switch. For the A type, it is possible to turn off forcibly in case of emergency by Push Button signal. This enables a freezed device to be turned off. For the B type, turn-off is available only with SHDN pin. The output capacitor inrush current limiting function suppresses excessive current that occurs when the switch is turned on, preventing it from going into a brownout state. The output short-circuit protection function detects the voltage drop due to the short circuit and turns off the power supply line by force. The signal on the SW pin by Push button makes the device recover. The power good function is used to properly adjust the timing of turning on the DC-DC regulator or other system on the rear stage. (*1) Please be sure to complete the preparation for shutting down safely before inputting the signal to SHDN pin from the MCU or the likes. (*2) V may not start up completely if the load current is 350uA (DC) or more at starting up due to the output capacitor inrush current limiting OUT function. Please design so that the started up load current is less than 350uA (DC) or the output on the rear stage is enabled by using the PG pin. FEATURES APPLICATIONS Input Voltage Range : 2.5V6.0V Wearable devices Stand-by Current : 0.01 A (Typ.) / Turn-Off state Wireless headphones / Earphones Quiescent Current : 0.45 A (Typ.) / Turn-On state Mobile devices Output Current : 400mA (V =2.5V, Ta=25) Various applications equipped with buttons IN Turn-On Delay Time : 0.5s, 1.0s, 3.0s or 5s Various applications equipped with mechanical switches (T ) The devices with waterproof function. OND Turn-Off Method : Type A By inputting H voltage to the SHDN pin. TYPICAL APPLICATION CIRCUIT By inputting L voltage during the T to the SW pin. OFFD Type B By inputting H voltage to Battery V V Other the SHDN pin. V OUT VDD OUT IN C =0.1F IN CL=0.1F R2 PMICorLDO R1 Turn-Off Delay Time : 3s, 5s, 10s or 15s V or IN DC/DC (T ) XC6192 OFFD PG EN SBD MCU Added function : Power Good function (the PG pin) SW I/O Forced shutdown function (the SHDN pin) TEST I/O SHDN V SS R3 Protective function : Output capacitor inrush current limit function PushButton Output circuit short protection Output capacitor discharge function Operating Ambient Temperature :-4085 Package :USP-8B06 TIMING CHART (XC6192xxxxxR-G) T T T T T T T OND OND OND OFFD OFFD OND OND VIN SW TypeAV OUT TypeBV OUT TypeAPG TypeBPG SHDN TypeA CLInrushCurrent TypeB CLInrushCurrent 1/27 XC6192 Series BLOCK DIAGRAM XC6192A V V IN OUT PM2 SWCircuit SW PM1 R1 R2 VREF POR NM2 TypeSelect PG FromSHDNCircuit VREF2 InrushCurrentLimit R3 POR2 TurnOnDelay Counter ShortCircuitProtect OSC NM1 TurnOffDelay GateSlope Counter Tovariouscircuit FromSHDNCircuit SHDNCircuit SHDN TESTCircuit TEST V SS XC6192B V V IN OUT PM2 SWCircuit SW PM1 R1 R2 VREF POR NM2 TypeSelect PG FromSHDNCircuit VREF2 InrushCurrentLimit R3 POR2 TurnOnDelay Counter ShortCircuitProtect OSC NM1 TurnOffDelay GateSlope Counter Tovariouscircuit FromSHDNCircuit SHDNCircuit SHDN TESTCircuit TEST V SS *Diodes inside the circuit are an ESD protection diodes and a parasitic diodes. 2/27