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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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LP2957ISX/NOPB 데이터시트(PDF) 3 Page - Texas Instruments |
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LP2957ISX/NOPB 데이터시트(HTML) 3 Page - Texas Instruments |
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3 / 24 page  LP2957, LP2957A www.ti.com SNVS102C – JUNE 1998 – REVISED APRIL 2013 Electrical Characteristics (continued) 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 = 6V, IL = 1 mA, CL = 2.2 µF, VSD = 3V. LP2957AI LP2957I Symbol Parameter Conditions Typical Units Min Max Min Max IGND IL = 1 mA 150 200 200 µA 230 230 IL = 50 mA 1.1 2 2 2.5 2.5 Ground Pin Current(5) IL = 100 mA 3 6 6 mA 8 8 IL = 250 mA 16 28 28 33 33 IGND IL = 0 130 180 180 µA Ground Pin Current in Shutdown(5) VSD = 0.4V 200 200 IGND VIN = 4.5V 180 230 230 µA Ground Pin Current at Dropout(5) IL = 0.1 mA 250 250 IO (Sink) VIN = 5.3V 50 30 30 Off-State Output Pulldown mA Current VO = 5V, VSD = 0.4V 20 20 IO (Off) I(SD IN) ≥ 1 µA 3 10 10 Output Leakage in µA Shutdown VIN = 30V, VOUT = 0V 20 20 ILIMIT RL = 1Ω 400 500 500 Current Limit mA 530 530 See(6) Thermal Regulation 0.05 0.2 0.2 %/W en Output Noise Voltage CL = 2.2 µF 500 (10 Hz to 100 kHz) µV RMS CL = 33 µF 320 IL = 100 mA SHUTDOWN INPUT VSD (ON) 1.155 1.305 1.155 1.305 Output Turn-On Threshold V Voltage 1.140 1.320 1.140 1.320 HYST Hysteresis 6 mV IB VIN(SD) = 0V to 5V 10 −30 30 −30 30 Input Bias Current nA −50 50 −50 50 DROPOUT DETECTION COMPARATOR IOH VOH = 30V 0.01 1 1 Output “HIGH” Leakage µA 2 2 VOL VIN = 4V 150 250 250 Output “LOW” Voltage mV IO(COMP) = 400 µA 400 400 VTHR (Max) See(7) −240 −320 −150 −320 −150 Upper Threshold Voltage mV −380 −100 −380 −100 VTHR (Min) See(7) −350 −450 −230 −450 −230 Lower Threshold Voltage mV −640 −160 −640 −160 HYST Hysteresis See(7) 60 mV (5) Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the load current plus the ground pin current. (6) Thermal regulation is defined as the change in output voltage at a time T after a change in power dissipation is applied, excluding load or line regulation effects. Specifications are for a 200 mA load pulse at VIN = 20V (3W pulse) for T = 10 ms. (7) Voltages are referenced to the nominal regulated output voltage. Copyright © 1998–2013, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: LP2957 LP2957A |
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