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7440650022 Scheda tecnica(PDF) 7 Page - Texas Instruments |
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7440650022 Scheda tecnica(HTML) 7 Page - Texas Instruments |
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7 / 40 page  7 LM53602, LM53603 www.ti.com SNVSAR0 – NOVEMBER 2016 Product Folder Links: LM53602 LM53603 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Electrical Characteristics (continued) Limits apply to the recommended operating junction temperature range of –40°C to 150°C, unless otherwise noted. Minimum and maximum limits are verified through test, design, or statistical correlation. Typical values represent the most likely parametric norm at TJ = 25°C, and are provided for reference purposes only. Unless otherwise stated the following conditions apply: VIN = 13.5 V. PARAMETER TEST CONDITIONS MIN(1) TYP MAX(1) UNIT IZC Zero-cross current limit FPWM = 0 V –0.02 A INEG Negative current limit FPWM = 3.3 V –1.5 A Rdson Power switch on-resistance High-side MOSFET resistance 135 290 mΩ Low-side MOSFET resistance 60 125 FSW Switching frequency VIN = 3.8 V to 18 V 1.85 2.1 2.35 MHz VIN = 36 V 1.2 FSYNC Synchronizing frequency range 1.9 2.1 2.3 MHz VCC Internal VCC voltage VBIAS = 3.3 V 3.15 V TSD Thermal shutdown thresholds Rising 162 178 °C Hysteresis, below 18 (1) This parameter is valid once the input voltage has risen above VIN-operate and the device has started up. (2) Includes current into the EN pin, but does not include current due to the external resistive divider in adjustable output versions. See Input Supply Current section. 7.6 System Characteristics The following specifications apply only to the typical application circuit, shown in Figure 15 with nominal component values. Typical values represent the most likely parametric norm at TJ = 25°C, and are provided for reference purposes only. The parameters in this table are not ensured. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VIN-MIN Minimum input voltage for Vout to stay within ±2% of regulation(1) VOUT = 3.3 V, IOUT = 3 A 3.9 V VOUT = 3.3 V, IOUT = 1 A 3.55 Regulation Line Regulation VOUT = 5 V, VIN = 8 V to 36 V, IOUT = 3 A 7 mV VOUT = 3.3 V, VIN = 6 V to 36 V, IOUT = 3 A 5 Load Regulation : Auto Mode VOUT = 5 V, VIN = 12 V, IOUT = 10 µA to 3 A 77 mV VOUT = 3.3 V, VIN = 12 V, IOUT = 10 µA to 3 A 53 Load Regulation : FPWM Mode VOUT = 5 V, VIN = 12 V, IOUT = 10 µA to 3 A 12 mV VOUT = 3.3 V, VIN = 12 V, IOUT = 10 µA to 3 A 9 ISUPPLY Input supply current when in regulation(2) VIN = 13.5 V, VOUT = 3.3 V, IOUT = 0 A 24 µA VIN = 13.5 V, VOUT = 5 V, IOUT = 0 A 34 VDROP Dropout voltage (VIN – VOUT) 5-V Option: VOUT = 4.95 V, IOUT = 3 A, FSW < 1.85 MHz 0.7 V 5-V Option: VOUT = 5 V, IOUT = 3 A, FSW = 1.85 MHz 1.8 3.3-V Option: VOUT = 3.27 V, IOUT = 3 A, FSW < 1.85 MHz 0.65 3.3-V Option: VOUT = 3.3 V, IOUT = 3 A, FSW = 1.85 MHz 1.8 |
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