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TPS54200 Fiches technique(PDF) 5 Page - Texas Instruments |
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TPS54200 Fiches technique(HTML) 5 Page - Texas Instruments |
5 / 38 page 5 TPS54200, TPS54201 www.ti.com SLUSCO8A – NOVEMBER 2016 – REVISED MARCH 2017 Product Folder Links: TPS54200 TPS54201 Submit Documentation Feedback Copyright © 2016–2017, Texas Instruments Incorporated (1) Not production tested 6.5 Electrical Characteristics The electrical ratings specified in this section apply to all specifications in this document, unless otherwise noted. These specifications are interpreted as conditions that do not degrade the device parametric or functional specifications for the life of the product containing it. TJ = –40°C to +125°C, VIN = 4.5 V to 28 V, (unless otherwise noted). PARAMETER TEST CONDITIONS MIN TYP MAX UNIT INPUT SUPPLY VIN Input voltage range 4.5 28 V IOFF Shut down current PWM = GND 2 8.6 µA VIN_UVLO VIN under voltage lockout Rising VIN 3.83 4.2 4.47 V Falling VIN 3.4 3.7 3.95 V Hysteresis 470 mV DIMMING (PWM PIN) VADIM Analog dimming mode threshold Rising 1.97 2.07 2.17 V Falling 1.8 V VPDIM PWM dimming mode threshold Rising 0.9 1.0 1.1 V Falling 0.8 V VPWM Threshold to identify PWM duty cycle Rising 0.91 1.0 1.12 V Falling 0.5 0.63 0.72 V VPWM_SHUTDOWN Shutdown threshold 0.35 0.55 V FEEDBACK AND ERROR AMPLIFIER VFB1 Feedback voltage in analog dimming mode PWM = 3.3 V, SW duty > 90% 201 205 210 mV VFB2 Feedback voltage in PWM dimming mode PWM = 1.5 V, SW duty > 90% 96 100 104 mV BOOT PIN VBOOT_UVLO BOOT-SW UVLO threshold Rising 2.1 2.33 V Falling 2 2.2 V POWER STAGE RHSD High-side FET on resistance VBOOT – SW = 6 V 150 259 mΩ RLSD Low-side FET on resistance VIN > 6 V 70 120 mΩ CURRENT LIMIT ILIM_HS1 High side current limit 1 Either one of below conditions: 1. PWM dim mode 2. Analog dim mode and PWM duty >25% 2.4 3 3.6 A ILIM_HS2 High side current limit 2 Analog dim mode and PWM duty <25% 1 1.4 1.8 A ILIM_LS_SOURCE Low side source current limit VIN > 6 V 2.3 3.3 4.4 A ILIM_LS_SINK Low side sink current limit VIN > 6 V 1.25 1.7 2.2 A FAULT PROTECTION Thermal shutdown(1) Rising temperature 150 160 170 °C Hysteresis 10 °C VOVP Over voltage protection 1 V VOCP Over current protection 120% |
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