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LP3906SQ-PPXP Datasheet(PDF) 9 Page - Texas Instruments |
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LP3906SQ-PPXP Datasheet(HTML) 9 Page - Texas Instruments |
9 / 47 page LP3906 www.ti.com SNVS456M – AUGUST 2006 – REVISED MAY 2013 BUCK CONVERTERS SW1, SW2 Unless otherwise noted, VIN = 3.6, CIN = 10 µF, COUT = 10 µF, LOUT = 2.2 µH ceramic. Typical values and limits appearing in normal type apply for TJ = 25°C. Limits appearing in boldface type apply over the entire junction temperature range for operation, −40°C to +125°C. (1) (2) (3) (4) (5) Parameter Test Conditions Min Typ Max Units VOUT Output Voltage Accuracy Default VOUT −3 +3 % Line Regulation 2.7< VIN < 5.5 0.089 %/V IO =10 mA Load Regulation 100 mA < IO < IMAX 0.0013 %/mA Eff Efficiency Load Current = 250 mA 96 % ISHDN Shutdown Supply Current EN is de-asserted 0.01 µA fOSC Sync Mode Clock Frequency Synchronized from 13 MHz system 2.0 MHz clock Internal Oscillator Frequency 2.0 MHz IPEAK Peak Switching Current Limit 2.0 A IQ (5) Quiescent Current “On” No load PFM Mode 33 µA RDSON (P) Pin-Pin Resistance PFET 200 m Ω RDSON (N) Pin-Pin Resistance NFET 180 m Ω TON Turn On Time Start up from shut-down 500 µs CIN Input Capacitor Capacitance for stability 10 µF CO Output Capacitor Capacitance for stability 10 µF (1) All voltages are with respect to the potential at the GND pin. (2) Min and Max limits are ensured by design, test, or statistical analysis. Typical numbers are not specifications, but do represent the most likely norm. (3) CIN, COUT: Low-ESR Surface-Mount Ceramic Capacitors (MLCCs) used in setting electrical characteristics. (4) The device maintains a stable, regulated output voltage without a load. (5) The Iq can be defined as the standing current of the LP3906 when the I2C bus is active and all other power blocks have been disabled via the I2C bus, or it can be defined as the I2C bus active, and the other power blocks are active under no load condition. These two values can be used by the system designer when the LP3906 is powered using a battery. If the user plans to use the HW enable pins to disable each block of the IC please contact the factory applications for IQ details. I/O ELECTRICAL CHARACTERISTICS Unless otherwise noted: Typical values and limits appearing in normal type apply for TJ = 25°C. Limits appearing in boldface type apply over the entire junction temperature range for operation, TJ = 0°C to +125°C. (1) Limit Parameter Test Conditions Units Min Max VIL Input Low Level 0.4 V VIH Input High Level 1.2 V (1) This specification is ensured by design. Copyright © 2006–2013, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Links: LP3906 |
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