lm2796tl National Semiconductor Corporation, lm2796tl Datasheet
lm2796tl
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lm2796tl Summary of contents
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... The LM2796 is available in National’s chip-scale 18-bump micro SMD package. Typical Application Circuit © 2004 National Semiconductor Corporation Features n Drives LEDs with up to 20mA each n LEDs controlled in 2 Distinct Groups, for Backlighting 2 Displays (main LCD and sub-LCD) ...
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... E7 EN SET Ordering Information Order Information LM2796TL LM2796TLX www.national.com 18-Bump Thin Micro SMD Package, Large Bump NS Package Number TLA18 Input voltage. Input range: 2.7V to 5.5V. Ground Charge pump output. Approximately 1.5xV Flying capacitor connections. Enable pin. Logic input. High = normal operation, Low = shutdown (charge pump and all current sources OFF) ...
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Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. V pin voltage IN EN, ENA, ENB pin voltages Continuous Power Dissipation (Note 3) Junction Temperature (T ) J-MAX ...
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Electrical Characteristics Limits in standard typeface and typical values apply for T temperature range (-30˚C ≤ T ≤ +85˚C) . Unless otherwise specified Group B LEDs not ON simultaneously (ENA = and C = 1µF. ...
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Typical Performance Characteristics 2.0V; V(ENA) = 2.0V; V(ENB) = 0V; R SET LED Current vs. Input Voltage LED Current vs. PWM Duty Cycle, PWM Applied to ENA and/or ENB Unless otherwise specified 8.3 kΩ ...
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Circuit Description OVERVIEW The LM2796 is primarily intended for Lithium-Ion battery driven white-LED drive applications, and is well suited to drive white LEDs that are used for backlighting small-format displays. The part has seven matched constant-current out- puts, each capable ...
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Circuit Description (Continued) LED outputs rise at the rate of the reference voltage ramp. Due to the soft-start circuitry, turn-on time of the LM2796 is approximately 100µs (typ.). Thermal Protection Internal thermal protection circuitry disables the LM2796 when the junction ...
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... NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...