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LM2641MTCX-ADJ Datasheet(PDF) 6 Page - Texas Instruments |
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LM2641MTCX-ADJ Datasheet(HTML) 6 Page - Texas Instruments |
6 / 31 page LM2641 SNVS040B – JANUARY 2000 – REVISED APRIL 2013 www.ti.com Electrical Characteristics Typicals and limits appearing in regular type apply for TJ = 25°C. Limits appearing in boldface type apply over the entire junction temperature range for operation, 0 to +125°C. Unless otherwise specified under the Parameter or Conditions columns, VIN = 10V, and VSD = VON/OFF1 = VON/OFF2 = 5V. (1) (2) (3) Symbol Parameter Conditions Typical Limit Units System VIN Input Supply Voltage Range 5.5 V(min) 30 V(max) VOUT1 Output Voltage Adjustment 2.2 V(min) Range 6.0 V(max) VOUT2 Output Voltage Adjustment 2.2 V(min) Range 8.0 V(max) ΔVOUT/VOUT Load Regulation 0 mV ≤ (CSH1-CSL1) ≤ 80 mV, 0.5 % 0 mV ≤ (CSH2-CSL2) ≤ 80 mV ΔVOUT/ΔVIN Line Regulation 5.5V ≤ VIN ≤ 30V 0.002 %/V IIN Input Supply Current ON (4) 0.6 mA VFB1 = VFB2 = 1.4V, 1 mA(max) VCSH1 = 5.2V, VCSL1 = 5V, VCSH2 = 3.5V, VCSL2 = 3.3V Standing By (5) 80 µA VON/OFF1 = VON/OFF2 = 0V 150 µA(max) Shut Down (6) 25 µA VSD = 0V 60 µA(max) ISS1, ISS2 Soft-Start Source Current VSS1 = VSS2 = 1V 4.75 µA 2.0 µA(min) 7.0 µA(max) Soft-Start Sink Current 10 µA VPCL Positive Current Limit Voltage 100 mV (Voltage from CSH1 to CSL1 80 mV(min) and from CSH2 to CSL2) 140 mV(max) VNCL Negative Current Limit Voltage V2NDFB/FPWM = 0.8V −100 mV (Voltage from CSH1 to CSL1 −80 mV(min) and from CSH2 to CSL2) −140 mV(max) VOUT Undervoltage Shutdown 70 % Latch Threshold 60 %(min) 80 %(max) VOUT Overvoltage Shutdown 150 % Latch Threshold 135 %(min) 165 %(max) (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 specified performance limits. For specified performance limits and associated test conditions, see the Electrical Characteristics tables. (2) A typical is the center of characterization data taken with TA = TJ = 25°C. Typicals are not specified. (3) All limits are specified. All electrical characteristics having room-temperature limits are tested during production with TA = 25°C. All hot and cold limits are specified by correlating the electrical characteristics to process and temperature variations and applying statistical process control. (4) Both controllers are ON but not switching. Currents entering the IC at IN, CSL1, CSH1, CSL2, and CSH2 are measured. Those entering at CSL1 and CSH1 are multiplied by 0.50 to emulate the effect of a switching conversion from 10V down to 5V. Those entering at CSL2 and CSH2 are multiplied by 0.33 to emulate the effect of a switching conversion from 10V down to 3.3V. After multiplication, all five currents are added. Because the voltage at the CSL1 input is greater than the LIN-to-VOUT switchover threshold, most of the input supply current enters the IC via the CSL1 input. (5) Both switching controllers are OFF. The 5V, 50 mA linear regulator (output at LIN) and the precision 2.5V reference (output at REF) remain ON. (6) Both switching controllers and the 2.5V precision reference are OFF. The 5V, 50 mA linear regulator remains ON. 6 Submit Documentation Feedback Copyright © 2000–2013, Texas Instruments Incorporated Product Folder Links: LM2641 |
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