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LM5121MHNOPB Datasheet(PDF) 6 Page - Texas Instruments |
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LM5121MHNOPB Datasheet(HTML) 6 Page - Texas Instruments |
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6 / 43 page  LM5121/LM5121-Q1 SNVS963A – SEPTEMBER 2013 – REVISED SEPTEMBER 2013 www.ti.com ELECTRICAL CHARACTERISTICS (continued) Unless otherwise specified, these specifications apply for -40°C ≤ TJ ≤ +125°C, VVIN = 12 V, VVCC = 8.3 V, RT = 20 kΩ, no load on LO and HO. Typical values represent the most likely parametric norm at TJ = 25°C, and are provided for reference purposes only. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT IRES- RES current source1 Fault-state charging current 20 30 40 SOURCE1 IRES-SINK1 RES current sink1 Normal-state discharging current 5 µA IRES- RES current source2 Hiccup mode off-time charging current 10 SOURCE2 IRES-SINK2 RES current sink2 Hiccup mode off-time discharging 5 current Hiccup cycle 8 Cycles RES discharge switch RDS-ON 40 Ω Ratio of hiccup mode off-time to restart 122 delay time HO GATE DRIVER VOHH HO high-state voltage drop IHO = –100 mA, VOHH = VBST – VHO 0.15 0.24 V VOLH HO low-state voltage drop IHO = 100 mA, VOLH = VHO – VSW 0.1 0.18 HO rise time (10% to 90%) CLOAD = 4700 pF, VBST = 12 V 25 ns HO fall time (90% to 10%) CLOAD = 4700 pF, VBST = 12 V 20 VHO = 0 V, VSW = 0 V, VBST = 4.5 V 0.8 IOHH Peak HO source current VHO = 0 V, VSW = 0 V, VBST = 7.6 V 1.9 A VHO = VBST = 4.5 V 1.9 IOLH Peak HO sink current VHO = VBST = 7.6 V 3.2 IBST BST charge pump sourcing current VVIN = VSW = 9.0 V , VBST - VSW = 5.0 V 90 200 µA BST to SW, IBST= –70 μA, 5.3 6.2 6.75 VVIN = VSW = 9.0 V BST charge pump regulation BST to SW, IBST = –70 μA, V 7 8.5 9 VVIN = VSW = 12 V BST to SW undervoltage 2.0 3.0 3.5 BST DC bias current VBST - VSW = 12 V, VSW = 0 V 30 45 µA LO GATE DRIVER VOHL LO high-state voltage drop ILO = –100 mA, VOHL = VVCC – VLO 0.15 0.25 V VOLL LO low-state voltage drop ILO = 100 mA, VOLL = VLO 0.1 0.17 LO rise time (10% to 90%) CLOAD = 4700 pF 25 ns LO fall time (90% to 10%) CLOAD = 4700 pF 20 VLO = 0 V, VVCC = 4.5 V 0.8 IOHL Peak LO source current VLO = 0 V 2.0 A VLO = VVCC = 4.5 V 1.8 IOLL Peak LO sink current VLO = VVCC 3.2 SWITCHING CHARACTERISTICS tDLH LO fall to HO rise delay No load, 50% to 50% 50 80 115 ns tDHL HO fall to LO rise delay No load, 50% to 50% 60 80 105 THERMAL TSD Thermal shutdown Temperature rising 165 ºC Thermal shutdown hysteresis 25 6 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated Product Folder Links: LM5121/LM5121-Q1 |
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