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LM3639A Arkusz danych(PDF) 2 Page - Texas Instruments |
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LM3639A Arkusz danych(HTML) 2 Page - Texas Instruments |
2 / 28 page Top View A B C D E Bottom View E D C B A 1 2 3 4 1 2 3 4 LM3639A SNVS964 – MARCH 2013 www.ti.com This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. Connection Diagram Figure 1. 20-Bump, 0.4 mm Pitch DSBGA Package YFQ0020HGA PIN DESCRIPTIONS TERMINAL I/O DESCRIPTION NAME NO. FLED1 A1 Output High Side Current Source Output for Flash LED1. FLED2 B1 Output High Side Current Source Output for Flash LED2. Flash LED Boost Output. Connect a 10 µF ceramic capacitor between this OUTF (x2) A2/B2 Output pin GND. Drain Connection for Internal NMOS and Synchronous PMOS Switches. SWF (x2) A3/B3 Output Connect the Flash LED Boost Inductor to SWF. GND (x3) A4/B4/E3 Ground Power Amplifier Synchronization Input. The TX pin has a 300 k Ω pull-down TX C2 Input resistor connected to GND. Active High Hardware Flash Enable. Drive STROBE high to turn on Flash STROBE C3 Input pulse. STROBE overrides TORCH. The STROBE pin has a 300 k Ω pull- down resistor connected to GND. Input Voltage Connection. Connect IN to the input supply, and bypass to VIN C4 Input GND with a 10 µF or larger ceramic capacitor. SDA D3 Input Serial Data Input/Output. SCL D2 Input Serial Clock Input. EN C1 Input Enable Pin. High = Standby, Low = Shutdown/Reset. Drain Connection for internal NFET. Connect SWB to the junction of the SWB E4 Input backlight boost inductor and the Schottky diode anode. PWM Brightness Control Input for backlight current control. The PWM pin PWM D4 Input has a 300 k Ω pull-down resistor connected to GND. Input Terminal to Backlight LED String Current Sink #1 (40V max). The boost BLED1 D1 Input converter regulates the minimum of BLED1 and BLED2 to 400 mV. Input Terminal to Backlight LED String Current Sink #2 (40V max). The boost BLED2 E1 Input converter regulates the minimum of BLED1 and BLED2 to 400 mV. Over-Voltage Sense Input for Backlight Boost. Connect to the positive OVP E2 Input terminal of (COUTB). 2 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated Product Folder Links: LM3639A |
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