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TPS77833 Datasheet(PDF) 2 Page - Texas Instruments |
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TPS77833 Datasheet(HTML) 2 Page - Texas Instruments |
2 / 26 page TPS77701, TPS77715, TPS77718, TPS77725, TPS77733 with RESET OUTPUT TPS77801, TPS77815, TPS77818, TPS77825, TPS77833 with PG OUTPUT FAST TRANSIENT RESPONSE 750mA LOW DROPOUT LINEAR REGULATORS SLVS230G − SEPTEMBER 1999 − REVISED JANUARY 2004 www.ti.com 2 description (continued) Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 260 mV at an output current of 750 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 µA over the full range of output current, 0 mA to 750 mA). These two key specifications yield a significant improvement in operating life for battery-powered systems. This LDO family also features a sleep mode; applying a TTL high signal to EN (enable) shuts down the regulator, reducing the quiescent current to 1 µA at TJ = 25°C. The RESET output of the TPS777xx initiates a reset in microcomputer and microprocessor systems in the event of an undervoltage condition. An internal comparator in the TPS777xx monitors the output voltage of the regulator to detect an undervoltage condition on the regulated output voltage. Power good (PG) of the TPS778xx is an active high output, which can be used to implement a power-on reset or a low-battery indicator. The TPS777xx and TPS778xx are offered in 1.5-V, 1.8-V, 2.5-V, 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 the TPS77701 option and 1.2 V to 5.5 V for the TPS77801 option). Output voltage tolerance is specified as a maximum of 2% over line, load, and temperature ranges. The TPS777xx and TPS778xx families are available in 8-pin SOIC and 20-pin PWP packages. AVAILABLE OPTIONS TJ OUTPUT VOLTAGE (V) PACKAGED DEVICES TJ TYP TSSOP (PWP) SOIC (D) 3.3 TPS77733PWP TPS77833PWP TPS77733D TPS77833D 2.5 TPS77725PWP TPS77825PWP TPS77725D TPS77825D 1.8 TPS77718PWP TPS77818PWP TPS77718D TPS77818D −40 °C to 125°C 1.5 TPS77715PWP TPS77815PWP TPS77715D TPS77815D −40 °C to 125°C Adjustable 1.5 V to 5.5 V TPS77701PWP — TPS77701D — Adjustable 1.2 V to 5.5 V — TPS77801PWP — TPS77801D The TPS77x01 is programmable using an external resistor divider (see application information). The D and PWP packages are available taped and reeled. Add an R suffix to the device type (e.g., TPS77701DR). (1) See application information section for capacitor selection details. RESET/ PG OUT OUT 7 6 5 IN IN EN GND 3 16 14 13 VI 0.1 µF RESET/PG VO 10 µF + Co(1) Figure 1. Typical Application Configuration for Fixed Output Options |
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