AIC1523 500mA Power Distribution Switch n FEATURES n DESCRIPTION • 120mΩ (5V Input) High-Side MOSFET Switch. l 500mA Continuous Load Current. l 80µA Typical On-State Supply Current. l 1µA Typical Off-State Supply Current. l Current-Limit / Short Circuit Protection. l Thermal Limiting Protection under Overcurrent Condition. l Output can be Forced Higher than Input (Off-State). l Active-High or Active-Low Enable. The AIC1523 is an integrated high-side power switches for input power selection applications that using in portable products or PCI interface peripheral cards. The high-side switch is a MOSFET with 120mΩ RDS(ON), low voltage drop and low power consumption meet power saving requirements . The switch ON/OFF is controlled by CTL pin. Output current is typically limited to 1.0A, well below the 5A safety requirement, and thermal shutdown function shuts the switch off to prevent damage under overcurrent conditions. n APPLICATIONS l l l l Power Management. PCI Cards With Wake-On- LAN Hot Plug-In Power Supplies. Power Distribution Switch. Design easily and layout flexibility for getting stable voltage in power transfer transition for power selection application. Guaranteed minimum output rise time limits inrush current during hot plug-in, minimizing EMI and preventing the voltage at upstream port from dropping excessively. n TYPICAL APPLICATION CIRCUIT AIC1523-0 VCC 5.0V IN + 33µF VOUT OUT + 0.1µF CTL GND * 33µF 0.01µ F * 33µF, 16V Tantalum, or 100µF, 10V Electrolytic Bold line indicate high-current traces High-Side Power Distribution Switch Analog Integrations Corporation www.analog.com.tw DS-1523-00 May 30, 01 4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC TEL: 886-3-5772500 FAX: 886-3-5772510 1 AIC1523 n ORDERING INFORMATION AIC1523-XCX ORDER NUMBER FRONT VIEW AIC1523-0CO AIC1523-1CO (MSOP8) PACKAGING TYPE O: MSOP S: SO8 PIN CONFIGURATION CONTROL POLARITY 0: Active Low 1: Active High NC 1 8 NC CTL 2 7 OUT IN 3 6 NC 5 GND NC 4 FRONT VIEW AIC1523-0CS AIC1523-1CS (SO8) NC 1 8 NC CTL 2 7 OUT IN 3 6 NC 5 GND NC 4 n ABSOLUTE MAXIMUM RATINGS Supply Voltage (V IN) .......................................................… … … … .......… … ........... 7.0V Operating Temperature Range Storage Temperature Range ......… … … ..............… … … … … .… ............... -40°C ~ 85°C ....................................… … … .................. -65°C ~ 150°C n ELECTRICAL CHARACTERISTICS (V IN= 5V, Ta=25°C, unless otherwise specified.) PARAMETERS Supply Current Control Input Voltage CONDITIONS MIN. TYP. MAX. Switch Off, OUT=Open 0.75 2 Switch On, OUT=Open 80 100 VCTL =Logic “0” VCTL =Logic “1” 0.8 2.4 UNIT µA V VCTL =Logic “0” 0.01 1 Control Input Current VCTL =Logic “1” 0.01 1 Output MOSFET Resistance IOUT = 500mA 120 180 Output Turn-On Rise Delay RL = 10Ω 30 µS Output Turn-On Rise Time RL = 10Ω 500 µS Output Turn-Off Delay RL = 10Ω 0.2 10 µA mΩ µS 2 AIC1523 n ELECTRICAL CHARACTERISTICS (Continued) PARAMETERS CONDITIONS Output Turn-Off Fall Time MIN. TYP. MAX. UNIT 0.2 10 µS 2 µA 1.25 A RL = 10Ω Output Leakage Current Current Limit Threshold Vin = 5.0V 0.6 Current Limit Threshold Vin = 2.4V 0.6 1.0 A Thermal Limit °C 110 n BLOCK DIAGRAM Thermal Protection OSC. CTL IN Charge Pump Current Limit RS GATE NMOS Gate Control GND OUT n TYPICAL PERFORMANCE CHARACTERISTICS On-State Supply Current vs. Temperature On-State Supply Current vs. Supply 90 85 80 Supply Current (µA) Supply Current (µA) 85 75 70 65 60 80 75 70 55 50 2.0 65 2.5 3.0 3.5 4.0 4.5 5.0 5.5 Supply Voltage (V) 6.0 6.5 7.0 7.5 -40 -20 0 20 40 60 80 100 Temperature (°C) 3 AIC1523 n TYPICAL PERFORMANCE CHARACTERISTICS (Continued) Off-State Supply Current vs. Temperature Off-State Supply Current vs. Supply Voltage 20 4.5 18 4.0 Supply Current (nA) Supply Current (nA) 16 3.5 3.0 2.5 2.0 1.5 14 12 10 8 6 4 1.0 2 0.5 2.0 130 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 0 7.5 -40 -20 0 20 40 60 80 Supply Voltage (V) Temperature (°C) Output On Resistance vs. Supply Voltage Output On Resistance vs. Temperature 100 Switch On Resistance (m Ω) Switch_ON Ristance (mΩ) 150 125 120 115 110 105 140 130 120 110 100 90 80 100 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 -40 7.5 -20 20 40 60 80 100 Output Rise Time vs. temperature Current Limit vs. Supply Voltage 1000 0 Temperature (°C) Supply Voltage 550 Output Rise Time (µ S) Current Limit (mA) 900 500 800 700 450 600 400 500 400 2.0 350 2.5 3.0 3.5 4.0 4.5 5.0 5.5 Supply Voltage (V) 6.0 6.5 7.0 -40 -20 0 20 40 Temperature (°C) 60 80 100 4 AIC1523 n TYPICAL PERFORMANCE CHARACTERISTICS (Continued ) Output Fall Time vs. Temperature CTL Threshold Voltage vs. Supply Voltage 300 2.4 2.0 Output Fall Time (nS) 2.2 CTL rising 1.8 1.6 1.4 1.2 1.0 CTL falling 250 200 150 100 0.8 0.6 2.0 50 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 -40 -20 0 Supply Voltage (V) Turn On Rising Time (10Ω loading) 20 40 60 80 Temperature (° C) 100 Turn On Characteristic (35 Ω, Loading) 220µF 200mA/DIV IOUT 100µF I OUT, 200mA/DIV VOUT 426µS No Cap CTL CTL Turn Off Falling Time (10 Ω Loading) IOUT 200mA/DIV VOUT 107nS CTL 5 AIC1523 n TYPICAL PERFORMANCE CHARACTERISTICS (Continued) Turn On Characteristic (35Ω , 100µF Loading) Turn Off Falling Time (35Ω, 100uF Loading) IOUT 500mA/DIV 500mA/DIV IOUT VOUT VOUT CTL CTL Current Limit Threshold Thermal Limiting Transient Response VOUT VOUT 1.2A 1A I OUT I OUT Thermal limit (2Ω ) loading) 500mA/DIV 500mA/DIV Short Circuit Testing Short Circuit Response Time Short VOUT Thermal Oscillation I OUT I OUT 1A/DIV 500mA/DIV VOUT 6 AIC1523 n PIN DESCRIPTION PIN 1/4/6/8: NC: PIN 2: CTL - TTL compatible control input. It controls the power switch turnon/turn-off. Active High for AIC1523-1 and active low for AIC1523-0. PIN 3: IN- Power supply input. PIN 4: GND- Chip power ground. PN 7: OUT- MOSFET switch output. n APPLICATION INFORMATIONS l Current Limit l The current limit threshold is preset internally. It protects the output MOSFET switches from damage due to undesirable short circuit conditions or excess inrush current often encountered during hot plug-in. The AIC1523 allows minimum 500mA continuous load current per Channel. l Thermal Protection l l Supply Filtering A 0.1uF to 1uF bypass capacitor from IN to GND, located near the device, is strongly recommended to control supply transients. Without a bypass capacitor, an output short may cause sufficient ringing on the input (from supply lead inductance) to damage internal control circuitry. Short Circuit Transient Bulk capacitance provides the short-term transient current needed during a hot-attachment event. With a 33uF, 16V tantalum or 100uF, 10V electrolytic capacitor mounted close to downstream connector should provide transient drop protection. When the chip temperature exceeds 110°C, the thermal protection function works. l Transient Droop Requirements A current surge is caused by the input capacitance of device. Ferrite beads are recommended in series with all power and ground connector pins. Ferrite beads reduce EMI and limit the inrush current during hot-attachment by filtering high-frequency signals. l Printed Circuit Layout The power circuitry of printed circuit boards requires a customized layout to maximize thermal dissipation and to minimize voltage drop and EMI. 7 AIC1523 ■ PHYSICAL DIMENSIONS l MSOP 8 (unit: mm) D H E e SYMBOL MIN MAX A 0.76 0.97 A1 -- 0.20 B 0.28 0.38 C 0.13 0.23 D 2.90 3.10 E 2.90 3.10 e A A1 C B H 4.80 5.00 L 0.40 0.66 SYMBOL MIN MAX A 1.35 1.75 A1 0.10 0.25 B 0.33 0.51 C 0.19 0.25 D 4.80 5.00 E 3.80 4.00 L 8 LEAD PLASTIC SO (unit: mm) D H E e e A C A1 l 0.65 B 1.27(TYP) H 5.80 6.20 L 0.40 1.27 L 8