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LM2672M-5.0 Datasheet(PDF) 4 Page - Texas Instruments |
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LM2672M-5.0 Datasheet(HTML) 4 Page - Texas Instruments |
4 / 33 page LM2672 SNVS136K – SEPTEMBER 1998 – REVISED APRIL 2013 www.ti.com LM2672-12 Electrical Characteristics Symbol Parameter Conditions Typ(1) Min(2) Max(2) Units SYSTEM PARAMETERS Test Circuit Figure 22(3) VOUT Output Voltage VIN = 15V to 40V, ILOAD = 20 mA to 1A 12 11.82/11.64 12.18/12.36 V η Efficiency VIN = 24V, ILOAD = 1A 94 % (1) Typical numbers are at 25°C and represent the most likely norm. (2) All limits specified at room temperature (standard type face) and at temperature extremes (bold type face). All room temperature limits are 100% production tested. All limits at temperature extremes are specified via correlation using standard Statistical Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL). (3) External components such as the catch diode, inductor, input and output capacitors, and voltage programming resistors can affect switching regulator performance. When the LM2672 is used as shown in Figure 22 and Figure 23 test circuits, system performance will be as specified by the system parameters section of the Electrical Characteristics. LM2672-ADJ Electrical Characteristics Symbol Parameter Conditions Typ(1) Min(2) Max(2) Units SYSTEM PARAMETERS Test Circuit Figure 23(3) VFB Feedback Voltage VIN = 8V to 40V, ILOAD = 20 mA to 1A 1.210 1.192/1.174 1.228/1.246 V VOUT Programmed for 5V (see Circuit of Figure 23) VFB Feedback Voltage VIN = 6.5V to 40V, ILOAD = 20 mA to 500 mA 1.210 1.192/1.174 1.228/1.246 V VOUT Programmed for 5V (see Circuit of Figure 23) η Efficiency VIN = 12V, ILOAD = 1A 90 % (1) Typical numbers are at 25°C and represent the most likely norm. (2) All limits specified at room temperature (standard type face) and at temperature extremes (bold type face). All room temperature limits are 100% production tested. All limits at temperature extremes are specified via correlation using standard Statistical Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL). (3) External components such as the catch diode, inductor, input and output capacitors, and voltage programming resistors can affect switching regulator performance. When the LM2672 is used as shown in Figure 22 and Figure 23 test circuits, system performance will be as specified by the system parameters section of the Electrical Characteristics. All Output Voltage Versions Specifications with standard type face are for TJ = 25°C, and those in bold type face apply over full Operating Temperature Range. Unless otherwise specified, VIN = 12V for the 3.3V, 5V, and Adjustable versions and VIN = 24V for the 12V version, and ILOAD = 100 mA. Symbol Parameters Conditions Typ Min Max Units DEVICE PARAMETERS IQ Quiescent Current VFEEDBACK = 8V 2.5 3.6 mA For 3.3V, 5.0V, and ADJ Versions VFEEDBACK = 15V 2.5 mA For 12V Versions ISTBY Standby Quiescent Current ON/OFF Pin = 0V 50 100/150 μA ICL Current Limit 1.55 1.25/1.2 2.1/2.2 A IL Output Leakage Current VIN = 40V, ON/OFF Pin = 0V 1 25 μA VSWITCH = 0V VSWITCH = −1V, ON/OFF Pin = 0V 6 15 mA RDS(ON) Switch On-Resistance ISWITCH = 1A 0.25 0.30/0.50 Ω fO Oscillator Frequency Measured at Switch Pin 260 225 275 kHz D Maximum Duty Cycle 95 % Minimum Duty Cycle 0 % IBIAS Feedback Bias VFEEDBACK = 1.3V 85 nA Current ADJ Version Only 4 Submit Documentation Feedback Copyright © 1998–2013, Texas Instruments Incorporated Product Folder Links: LM2672 |
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