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LP8720 Datasheet(PDF) 10 Page - Texas Instruments |
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LP8720 Datasheet(HTML) 10 Page - Texas Instruments |
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10 / 26 page  LP8720 SNVS575B – JULY 2008 – REVISED MAY 2013 www.ti.com Operating Ratings (1) (2) VBATT = VINB, VBATT 2.7 to 4.5V VIN1, VIN2 2.5V to VBATT All input-only pins 0V to VBATT Junction Temperature (TJ) -40 to 125ºC Ambient Temperature (TA) -40 to 85ºC Maximum Power Dissipation (TA = 70ºC) (3) 1.2 W (1) Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of the device is specified. Operating Ratings do not imply ensured performance limits. For specified performance limits and associated test conditions, see the Electrical Characteristics tables. (2) All voltages are with respect to the potential at the GND pin. (3) Like the Absolute Maximum power dissipation, the maximum power dissipation for operation depends on the ambient temperature. The 1.2W rating for DSBGA 20 appearing under Operating Ratings results from substituting the maximum junction temperature for operation, 125°C, for TJ, 70°C for TA, and 45°C/W for θJA into (eg. 1) above. More power can be dissipated at ambient temperatures below 70°C. Less power can be dissipated at ambient temperatures above 70°C. The maximum power dissipation for operation can be increased by 22mW for each degree below 70°C, and it must be de-rated by 22 mW for each degree above 70°C. Thermal Properties (1) Junction-to-Ambient Thermal Resistance ( θJA) (Jedec Standard Thermal PCB) 45°C/W 20-bump DSBGA package (1) Junction-to-ambient thermal resistance is highly application and board-layout dependent. In applications where high maximum power dissipation exists, special care must be paid to thermal dissipation issues in board design. Current Consumption Unless otherwise noted, VVBATT = VVINB =VVIN1 = VVIN2 = 3.6V, GND = GNDB = 0V, CVBATT = CVIN1= CVIN2 = 2.2 µF, CVINB = 10 µF. 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= -40 to +125°C (1) Limit Parameter Test Conditions Typ Units Min Max IQ(STANDBY) Battery Standby Current VBATT = 3.6V 0.7 5 µA IQ(SLEEP) Battery Current in SLEEP BUCK and all LDO’s enabled 190 270 µA Mode @ 0 load IQ(SLEEP) Battery Current in SLEEP LDO1, LDO2, LDO3 and LDO4 enabled 170 µA Mode @ 0 load IQ(SLEEP) Battery Current in SLEEP LDO3 enabled 100 150 µA Mode @ 0 load IQ(SLEEP) Battery Current in SLEEP LDO1 and BUCK enabled 100 µA Mode @ 0 load IQ Battery Current @ 0 load BUCK and all LDO’s enabled 270 400 µA IQ Battery Current @ 0 load LDO1, LDO2, LDO3 and LDO4 enabled 230 µA IQ Battery Current @ 0 load LDO3 enabled 120 200 µA IQ Battery Current @ 0 load LDO1 and BUCK enabled 120 µA (1) All limits are specified. All electrical characteristics having room-temperature limits are tested during production with TJ = 25°C. All hot and cold limits are ensured by correlating the electrical characteristics to process and temperature variations and applying statistical process control. 10 Submit Documentation Feedback Copyright © 2008–2013, Texas Instruments Incorporated Product Folder Links: LP8720 |
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