Features: ` Open Drain Power-On Reset With 200-ms Delay (TPS775xx)
` Open Drain Power Good (TPS776xx)
` 500-mA Low-Dropout Voltage Regulator
` Available in 1.5-V, 1.8-V, 2.5-V, 2.8-V (TPS77628 Only), 3.3-V Fixed Output and Adjustable Versions
` Dropout Voltage to 169 mV (Typ) at 500 mA (TPS77x33)
` Ultra Low 85 A Typical Quiescent Current
` Fast Transient Response
` 2% Tolerance Over Specified Conditions for Fixed-Output Versions
` 8-Pin SOIC and 20-Pin TSSOP PowerPAD™ (PWP) Package
` Thermal Shutdown ProtectionPinout
SpecificationsInput voltage range‡, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to 13.5 V
Voltage range at EN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to 16.5 V
Maximum RESET voltage (TPS775xx) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16.5 V
Maximum PG voltage (TPS776xx) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16.5 V
Peak output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally limited
Output voltage, VO (OUT, FB) . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . 7 V
Continuous total power dissipation . . . . . . . . . . . . See dissipation rating tables
Operating virtual junction temperature range, TJ . . . . . . . . .. 40°C to 125°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . ... 65°C to 150°C
ESD rating, HBM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 kV
† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
‡ All voltage values are with respect to network terminal ground.DescriptionThe TPS77518 devices are designed to have a fast transient response and be stable with a 10-F low ESR capacitors. This combination provides high performance at a reasonable cost.
Because the PMOS device TPS77518 behaves as a low-value resistor, the dropout voltage is very low (typically 169 mV at an output current of 500 mA for the TPS77x33) and is directly proportional to the output current. Additionally, since the PMOS pass element is a voltage-driven device, the quiescent current is very low and independent of output loading (typically 85 A over the full range of output current, 0 mA to 500 mA). These two key specifications yield a significant improvement in operating life for battery-powered systems. This LDO family TPS77518 also features a sleep mode; applying a TTL high signal to EN (enable) shuts down the regulator, reducing the quiescent current to 1 A at TJ = 25°C.
The RESET output of the TPS77518 initiates a reset in microcomputer and microprocessor systems in the event of an undervoltage condition. An internal comparator in the TPS775xx monitors the output voltage of the regulator to detect an undervoltage condition on the regulated output voltage.
Power good (PG) of the TPS776xx is an active high output, which can be used to implement a power-on reset or a low-battery indicator.
The TPS77518 are offered in 1.5-V, 1.8-V, 2.5-V, 2.8 V (TPS77628 only), and 3.3-V fixed-voltage versions and in an adjustable version (programmable over the range of 1.5 V to 5.5 V for TPS77501 option and 1.2 V to 5.5 V for TPS77601 option). Output voltage tolerance is specified as a maximum of 2% over line, load, and temperature ranges. The TPS77518 families are available in 8 pin SOIC and 20 pin TSSOP packages.
TPS77518 Data Sheet
