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TPS3895ADRYR Datasheet(PDF) 4 Page - Texas Instruments |
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TPS3895ADRYR Datasheet(HTML) 4 Page - Texas Instruments |
4 / 31 page ENABLE GND SENSE VCC CT SENSE_OUT 1 2 3 6 5 4 ENABLE GND SENSE VCC CT SENSE_OUT 1 2 3 6 5 4 TPS389 SBVS172B – JULY 2011 – REVISED APRIL 2015 www.ti.com 6 Pin Configuration and Functions DRY Package: TPS3895, TPS3897 6-Pin USON Top View DRY Package: TPS3896, TPS3898 6-Pin USON Top View Pin Functions PIN USON I/O DESCRIPTION NAME TPS3895/ TPS3896/ TPS3897 TPS3898 Capacitor-adjustable delay. The CT pin offers a user-adjustable delay time. Connecting this pin to a ground referenced capacitor sets the delay time for SENSE rising above CT 5 5 I 0.5 V to SENSE_OUT asserting (or ENABLE asserting to SENSE_OUT asserting for A version devices). tpd(r) (s) = [CCT (µF) × 4] + 40 µs Active high input. Driving ENABLE low immediately makes SENSE_OUT go low, independent of V(SENSE). With V(SENSE) already above VIT+, drive ENABLE high to ENABLE 1 — I make SENSE_OUT go high after the capacitor-adjustable delay time (A version) or 0.2 µs (P version). Active low input. Driving ENABLE high immediately makes SENSE_OUT go high, independent of V(SENSE). With V(SENSE) already above VIT+, drive ENABLE low to make ENABLE — 1 I SENSE_OUT go low after the capacitor-adjustable delay time (A version) or 0.2 µs (P version). GND 2 2 — Ground This pin is connected to the voltage that is monitored with the use of an external resistor. The output asserts after the capacitor-adjustable delay time when V(SENSE) SENSE 3 3 I rises above 0.5 V and ENABLE is asserted. The output deasserts after a minimal propagation delay (16 µs) when V(SENSE) falls below VIT+ – Vhys. SENSE_OUT is an open-drain and push-pull output that is immediately driven low after V(SENSE) falls below (VIT+ – Vhys) or the ENABLE input is low. SENSE_OUT goes high SENSE_OUT 4 — O after the capacitor-adjustable delay time when V(SENSE) is greater than VIT+ and the ENABLE pin is high. Open-drain devices (TPS3897/8) can be pulled up to 18 V independent of VCC; pullup resistors are required for these devices. SENSE_OUT is an open-drain and push-pull output that is immediately driven high after V(SENSE) falls below (VIT+ – Vhys) or the ENABLE input is high. SENSE_OUT goes SENSE_OUT — 4 O low after the capacitor-adjustable delay time when V(SENSE) is greater than VIT+ and the ENABLE pin is low. Open-drain devices (TPS3897/8) can be pulled up to 18 V independent of VCC; pullup resistors are required for these devices. Supply voltage input. Connect a 1.7-V to 6.5-V supply to VCC to power the device. It is VCC 6 6 I good analog design practice to place a 0.1-µF ceramic capacitor close to this pin. 4 Submit Documentation Feedback Copyright © 2011–2015, Texas Instruments Incorporated Product Folder Links: TPS389 |
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