®
SP2526
+3.0V to +5.5V USB Power Control Switch
s Compliant to USB Specifications s +3.0V to +5.5V Input Voltage Range s Two Independent Power Switches s Two Error Flag Outputs, Open Drain s 2.7V Undervoltage Lockout s 500mA Minimum Continuous Load Current Per Switch s 1.25A Short Circuit Current Limit s 140mΩ Maximum On-Resistance s 80µA On-State Supply Current s 1µA Shutdown Current s Output Can Be Forced Higher Than Input (Off-State) s Thermal Shutdown s 1ms Soft-Start Power Up s Active-High Version: SP2526-1 s Active-Low Version: SP2526-2
DESCRIPTION The SP2526 device is a dual +3.0V to +5.5V USB Supervisory Power Control Switch ideal for self-powered and bus-powered Universal Serial Bus (USB) applications. Each switch has low on-resistance (80mΩ typical) and can supply 500mA minimum. The fault currents are limited to 2.0A typical and the flag output pin for each switch is available to indicate fault conditions to the USB controller. The 1ms soft start will eliminate any momentary voltage droop on the upstream port that may occur when the switch is enabled in bus-powered applications. The thermal shutdown feature will prevent damage to the device when subjected to excessive current loads. The undervoltage lockout feature will ensure that the device will remain off unless there is a valid input voltage present.
ENA FLGA FLGB ENB
1 2 3 4 SP2526
8 7 6 5
OUTA IN GND OUTB
Rev. 8/21/01
SP2526 +3.0V to +5.5V USB Power Control Switch
© Copyright 2001 Sipex Corporation
1
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability. Supply Voltage......................................-0.3V, +6.0V Operating Temperature.....................-40˚C to +85˚C Storage Temperature......................-65˚C to +150˚C Power Dissipation Per Package 8-pin NSOIC (derate 6.14mW/OC above+70OC).................500mW 8-pin PDIP (derate 11.8mW/OC above+70OC)...............1000mW
SPECIFICATIONS
Unless otherwise noted, the following specifications apply for VIN = +5.0V, TA = 25°C.
PARAMETER Operating Voltage Range, VIN Supply Current, IIN Enable Input Threshold Voltage Enable Input Current Enable Input Capacitance Switch Resistance Output Turn-On Delay Output Turn-On Rise Time Output Turn-Off Delay Output Turn-Off Fall Time Output Leakage Current Current Limit Threshold Short-Circuit Current Limit Over-Temperature Shutdown Threshold Error Flag Output Resistance Error Flag Off Current UVLO Threshold
MIN. 3.0
TYP.
MAX. 5.5
UNITS V µA V µA pF
CONDITIONS
0.05 80 0.8 2.1 1.9 0.01 0.01 1 80 0.5 1 1 1 .02 2.0 0.5 0.75 135 125 10 15 0.01 2.5 2.7 2.6
5.0 160 2.4 1 1
enable off, no output load enable on, no output load low to high transition high to low transition VEN = VOH(min) = 2.4V VEN = VOL(max) = 0.8V
140
mΩ ms ms
3.3V