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LP3941LQA Datasheet(PDF) 6 Page - National Semiconductor (TI) |
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LP3941LQA Datasheet(HTML) 6 Page - National Semiconductor (TI) |
6 / 32 page Electrical Characteristics (Continued) Unless otherwise noted, V IN = 2.5V to 5.5V, CIN (IN1–6) = 4.7 µF, COUT (VO1 and VO9) = 4.7 µF, COUT (VO2,VO3,VO7,VO8, V O10 and VO11) = 2.2 µF, COUT (VO4 to VO6) = 1 µF, COUT (VRTC)=1µF ceramic, CBYP = 0.1 µF. Typical values and limits appearing in normal type apply for T J = 25˚C. Limits appearing in boldface type apply over the entire junction temperature range for operation, −40 to +125˚C. (Notes 2, 8, 9, 10) Symbol Parameter Condition Min Typ Max Units LOGIC AND CONTROL INPUTS V IH Input High Level PS-HOLD, ON, BSNS, HF-PWR, RTC_ALARM, SDA, SCL, V O5-EN, V O6-EN. 2.5V ≤ V BATT ≤ 5.5V 2.0 V I IL Logic Input Current SDA, SCL 0V ≤ V IN ≤ 5.5V −5 +5 µA PS-HOLD Input Current 0V ≤ V IN ≤ V BATT −5 +5 µA R IN ON, HF_PWR Pull-Down Resistance to GND 200 k Ω V O5-EN, VO6-EN, RTC_ALARM Pull Down Resistance to GND 1700 k Ω LOGIC AND CONTROL OUTPUTS V OL ON Output Low Level I SINK =1mA 0.4 V I LEAKAGE ON Open Drain Leakage V ON = 4.2V 5 µA I O-MAX ON, RESET, OUT (COMP1), OUT (COMP2) Output Maximum Sink/Source Current 5 mA V O1 LDO Electrical Characteristics Unless otherwise noted, V IN =VBATT = 3.6V. Typical values and limits appearing in normal type apply for TJ = 25˚C. Limits ap- pearing in boldface type apply over the entire junction temperature range for operation, −40 to +85˚C. (Notes 2, 8, 9) Symbol Parameter Condition Min Typ Max Units V OUT Accuracy Output Voltage 1 mA ≤ I OUT ≤ 200 mA, V OUT = 2.2V 3.0V ≤ V BATT =VIN ≤ 5.5V −3 ±1.0 +3 % V OUT Range Programmable Output Voltage Range 0µA ≤ I OUT ≤ 200 mA Programming Resolution = 100 mV 1.5 1.8 3.0 V I OUT Output Current (V OUT + 0.25V, 3.0V)MAX ≤ V BATT V BATT =VIN ≤ 5.5V 200 mA Output Current Limit V OUT = 0V 780 V IN–VOUT Dropout Voltage I OUT = 100 mA 70 254 mV ∆V OUT Line Regulation (V OUT + 0.25V, 3.0V)MAX ≤ V BATT V BATT =VIN ≤ 5.5V, I OUT = 100 mA 3 mV Load Regulation V IN = 3.6V, 1 mA ≤ I OUT ≤ 200 mA 10 e N Output Noise Voltage 10 Hz ≤ f ≤ 100 kHz, C OUT = 4.7 µF 27 µV RMS PSRR Power Supply Ripple Rejection Ratio f = 217 Hz, C OUT = 4.7 µF 60 dB C OUT Output Capacitance Output Capacitor ESR 1mA ≤ I OUT ≤ 200 mA 220 µF 5 500 m Ω t START-UP Start-Up Time from Shutdown ON-signal C OUT = 4.7 µF, IOUT = 200 mA (Note 10) 80 120 180 µs Note: This LDO will be ON after start up by default. Note: (VOUT + 0.25V, 3.0V)MAX means greater of the two. That is 3.0V if VOUT < 2.75V. Note: The PMU can switch off if battery voltage is below 3.0V due to under voltage lockout designed to protect the battery from excessive discharge at low voltages. Note: The start-up time (tSTART-UP) is defined as the time between the rising edge of ON-, HF_PWR-, RTC ALARM- or CHG_IN- pins going high and activating the power-up sequence of the LP3941A. www.national.com 6 |
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