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TPS2056AD Datasheet(PDF) 1 Page - Texas Instruments |
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TPS2056AD Datasheet(HTML) 1 Page - Texas Instruments |
1 / 37 page 1 FEATURES DESCRIPTION 1 2 3 4 8 7 6 5 GND IN IN EN† OUT OUT OUT OC TPS2045A, TPS2055A D PACKAGE (TOP VIEW) 1 2 3 4 8 7 6 5 GND IN EN1† EN2† OC1 OUT1 OUT2 OC2 TPS2046A, TPS2056A D PACKAGE (TOP VIEW) 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 GNDA IN1 EN1† EN2† GNDB IN2 EN3† EN4† OC1 OUT1 OUT2 OC2 OC3 OUT3 OUT4 OC4 TPS2048A, TPS2058A D PACKAGE (TOP VIEW) † All enable inputs are active high for the TPS205xA series. NC – No connect 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 GNDA IN1 EN1† EN2† GNDB IN2 EN3† NC OC1 OUT1 OUT2 OC2 OC3 OUT3 NC NC TPS2047A, TPS2057A D PACKAGE (TOP VIEW) TPS2045A ,, TPS2046A TPS2047A, TPS2048A, TPS2055A TPS2056A, TPS2057A, TPS2058A SLVS251C – SEPTEMBER 2000 – REVISED JANUARY 2008 www.ti.com CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES • 80-mΩ High-Side MOSFET Switch • 250 mA Continuous Current Per Channel • Independent Thermal and Short-Circuit Protection With Overcurrent Logic Output • Operating Range: 2.7-V to 5.5-V • CMOS- and TTL-Compatible Enable Inputs • 2.5-ms Typical Rise Time • Undervoltage Lockout • 10 µA Maximum Standby Supply Current for Single and Dual (20 µA for Triple and Quad) • Bidirectional Switch • Ambient Temperature Range, 0°C to 85°C • ESD Protection The TPS2045A through TPS2048A and TPS2055A through TPS2058A power-distribution switches are intended for applications where heavy capacitive loads and short circuits are likely to be encountered. These devices incorporate 80-m Ω N-channel MOSFET high-side power switches for power-distribution systems that require multiple power switches in a single package. Each switch is controlled by an independent logic enable input. Gate drive is provided by an internal charge pump designed to control the power-switch rise times and fall times to minimize current surges during switching. The charge pump requires no external components and allows operation from supplies as low as 2.7 V. When the output load exceeds the current-limit threshold or a short is present, these devices limit the output current to a safe level by switching into a constant-current mode, pulling the overcurrent (OCx) logic output low. When continuous heavy overloads and short circuits increase the power dissipation in the switch, causing the junction temperature to rise, a thermal protection circuit shuts off the switch to prevent damage. Recovery from a thermal shutdown is automatic once the device has cooled sufficiently. Internal circuitry ensures the switch remains off until valid input voltage is present. These power-distribution switches are designed to current limit at 0.5 A. 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Copyright © 2000–2008, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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