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LM2773 Datasheet(PDF) 4 Page - Texas Instruments |
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LM2773 Datasheet(HTML) 4 Page - Texas Instruments |
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4 / 18 page  LM2773 SNVS554A – JANUARY 2008 – REVISED MAY 2013 www.ti.com Electrical Characteristics (1) (2) Limits in standard typeface are for TJ = 25°C. Limits in boldface type apply over the full operating junction temperature range (-30°C ≤ TJ ≤ +110°C) . Unless otherwise noted, specifications apply to the LM2773 Typical Application Circuit (pg. 1) with: VIN = 3.6V; V(EN) = 1.8V, V(SEL) = 0V, CIN = C1 = C2 = 1.0µF, COUT = 4.7µF. (3) Symbol Parameter Condition Min Typ Max Units 1.8V Mode Output Voltage 2.5V ≤ VIN ≤ 5.5V 1.779 1.851 1.815 Regulation 0mA ≤ IOUT ≤ 300mA ( −2%) (+2%) VOUT V V(SEL) = 1.8V 1.6V Mode Output Voltage 1.587 1.651 2.5V ≤ VIN ≤ 5.5V 1.619 Regulation ( −2%) (+2%) 0mA ≤ IOUT ≤ 300mA VOUT/IOUT Output Load Regulation 0mA ≤ IOUT ≤ 300mA 0.15 mV/mA VOUT/VIN Output Line Regulation 0.3 %/V E Power Efficiency IOUT = 300mA 75 % IOUT = 0mA IQ Quiescent Supply Current 48 55 µA See(4) VR Fixed Frequency Output Ripple IOUT = 300mA 10 mV VR–PFM PFM–Mode Output Ripple IOUT < 40mA 12 mV ISD Shutdown Current V(EN) = 0V 0.1 0.625 µA FSW Switching Frequency 3.0V ≤ VIN ≤ 5.5V 0.80 1.15 1.50 MHz ROL Open-Loop Output Resistance IOUT = 300mA 1.0 Ω See(5) VIN = 5.5V ICL Output Current Limit 0V ≤ VOUT ≤ 0.2V 500 mA See(6) tON Turn-on Time 150 µs EN, SEL Pins VIL Logic-low Input Voltage 0 0.5 V 2.5V ≤ VIN ≤ 5.5V EN, SEL Pins VIH Logic-high Input Voltage 1.0 VIN V 2.5V ≤ VIN ≤ 5.5V V(EN), V(SEL) = 1.8V IIH Logic-high Input Current 5 µA See(7) IIL Logic-low Input Current V(EN), V(SEL) = 0V 0.01 µA (1) All voltages are with respect to the potential at the GND pins. (2) Min and Max limits are specified by design, test, or statistical analysis. Typical numbers are not ensured, but do represent the most likely norm. (3) CIN, COUT, C1, C2: Low-ESR Surface-Mount Ceramic Capacitors (MLCCs) used in setting electrical characteristics. (4) VOUT is set to 1.9V during this test (Device is not switching). (5) Open loop output resistance can be used to predict output voltage when, under low VIN and high IOUT conditions, VOUT falls out of regulation. VOUT = (Gain)VIN - (ROL x IOUT) (6) Under the stated conditions, the maximum input current is equal to 2/3 the maximum output current. (7) There are 350k Ω pull-down resistors connected internally between the EN pin and GND and the SEL pin and GND. 4 Submit Documentation Feedback Copyright © 2008–2013, Texas Instruments Incorporated Product Folder Links: LM2773 |
Similar Part No. - LM2773_15 |
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Similar Description - LM2773_15 |
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