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LP3963 Datasheet(PDF) 5 Page - Texas Instruments |
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LP3963 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 25 page LP3963, LP3966 www.ti.com SNVS067H – APRIL 2000 – REVISED APRIL 2013 Electrical Characteristics LP3963/LP3966 Limits in standard typeface are for TJ = 25°C, and limits in boldface type apply over the full operating temperature range. Unless otherwise specified: VIN = VO(NOM) + 1.5V, IL = 10 mA, COUT =33µF, VSD = VIN-0.3V. Symbol Parameter Conditions Typ (1) LP3963/6 (2) Units Min Max Output Voltage Tolerance(3) VOUT +1.5V < VIN< 7.0V -1.5 +1.5 VO 0 % 10 mA < IL < 3A -3.0 +3.0 Adjust Pin Voltage (ADJ version) 10 mA ≤ IL ≤ 3A 1.198 1.234 VADJ 1.216 V VOUT +1.5V ≤ VIN≤ 7.0V 1.180 1.253 ΔV OL Output Voltage Line Regulation VOUT +1.5V < VIN < 7.0V 0.02 % (3) 0.06 ΔVO/ ΔIOUT Output Voltage Load Regulation 10 mA < IL < 3A 0.06 % (3) 0.01 VIN - VOUT IL = 300 mA 80 100 120 Dropout Voltage (4) mV IL = 3A 800 1000 1200 IL = 300 mA 5 9 10 Ground Pin Current In Normal IGND mA Operation Mode IL = 3A 6 14 15 IGND Ground Pin Current In Shutdown VSD ≤ 0.2V 15 25 µA Mode (5) 75 IO(PK) Peak Output Current See (6) 4.5 4 A 3.5 SHORT CIRCUIT PROTECTION ISC Short Circuit Current 5.5 A OVER TEMPERATURE PROTECTION Tsh(t) Shutdown Threshold 165 °C Tsh(h) Thermal Shutdown Hysteresis 10 °C SHUTDOWN INPUT Output = High VIN VIN–0.3 VSDT Shutdown Threshold V Output = Low 0 0.2 TdOFF Turn-off delay IL = 3A 20 µs TdON Turn-on delay IL = 3A 25 µs ISD SD Input Current VSD = VIN 1 nA ERROR FLAG VT Threshold See (7) 10 5 16 % VTH Threshold Hysteresis See (7) 5 2 8 % VEF(Sat) Error Flag Saturation Isink = 100µA 0.02 0.1 V Td Flag Reset Delay 1 µs (1) Typical numbers are at 25°C and represent the most likely parametric norm. (2) Limits are 100% production tested at 25°C. Limits over the operating temperature range are specified through correlation using Statistical Quality Control (SQC) methods. The limits are used to calculate TI's Average Outgoing Quality Level (AOQL). (3) Output voltage line regulation is defined as the change in output voltage from the nominal value due to change in the input line voltage. Output voltage load regulation is defined as the change in output voltage from the nominal value due to change in load current. The line and load regulation specification contains only the typical number. However, the limits for line and load regulation are included in the output voltage tolerance specification. (4) Dropout voltage is defined as the minimum input to output differential voltage at which the output drops 2% below the nominal value. Dropout voltage specification applies only to output voltages of 2.5V and above. For output voltages below 2.5V, the drop-out voltage is nothing but the input to output differential, since the minimum input voltage is 2.5V. (5) This specification has been tested for −40°C ≤ TJ ≤ 85°C since the temperature rise of the device is negligible under shutdown conditions. (6) At elevated temperatures, devices must be derated based on package thermal resistance. The devices in TO-220 package must be derated at θjA = 50°C/W (with 0.5in 2, 1oz. copper area), junction-to-ambient (with no heat sink). The devices in the DDPAK/TO-263 surface-mount package must be derated at θjA = 60°C/W (with 0.5in 2, 1oz. copper area), junction-to-ambient. See Application Hints. (7) Error Flag threshold and hysteresis are specified as percentage of regulated output voltage. See Application Hints. Copyright © 2000–2013, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LP3963 LP3966 |
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