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TPS40140RHHTG4 Datasheet(PDF) 5 Page - Texas Instruments |
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TPS40140RHHTG4 Datasheet(HTML) 5 Page - Texas Instruments |
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5 / 68 page  TPS40140 www.ti.com SLUS660I – SEPTEMBER 2005 – REVISED JANUARY 2015 Pin Functions (continued) PIN(1) I/O DESCRIPTION NAME NO. A voltage divider from VIN to this pin determines the input voltage that CH2 starts. When the voltage is UVLO_CE2 16 I between 0.5 and 1.5 V the VREG regulator is enabled . When the voltage is 2.1 V or above CH2 soft start is allowed to begin. Power input for the controller 5V regulator and differential amplifier. A 1.0- μF ceramic capacitor should be VDD 17 I connected from this pin to ground. Non-inverting input of the differential amplifier. This pin should be connected to the output of the converter VOUT 2 I close to the load point. If the differential amplifier is not used, leave this pin open. The output of the internal 5-V regulator. A 4.7- μF ceramic capacitor should be connected from this pin to VREG 21 O PGND. VSHARE 6 O The 1.8-V reference output 7 Specifications 7.1 Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted) MIN MAX UNIT VDD, UVLO ≤ VDD, RT, SS –0.3 16 SW1, SW2 –1 44 Input voltage SW1, SW2, transient < 50 ns –5 V BOOT1, BOOT2, HDRV1, HDRV2 VSW + 6.0 All other pins –0.3 6.0 Output current RT 200 µA TJ Operating junction temperature –40 150 °C Tstg Storage temperature –55 150 °C 7.2 ESD Ratings VALUE UNIT Human body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) 3000 V(ESD) Electrostatic discharge V Charged-device model (CDM), per JEDEC specification JESD22- 1500 C101(2) (1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. (2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process. 7.3 Recommended Operating Conditions over operating free-air temperature range (unless otherwise noted) MIN NOM MAX UNIT VDD, UVLO ≤ VDD –0.3 15 SW1, SW2 –1 40 Input voltage V BOOT1, BOOT2, HDRV1, HDRV2 VSW + 5.5 All other pins –0.3 5.5 Maximum output current RT 25 µA Operating free-air temperature –40 85 °C Copyright © 2005–2015, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: TPS40140 |
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