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TPS2145IPWPR Fiches technique(PDF) 9 Page - Texas Instruments |
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TPS2145IPWPR Fiches technique(HTML) 9 Page - Texas Instruments |
9 / 34 page TPS2145, TPS2147 TPS2155, TPS2157 SLVS333 − AUGUST 2001 9 www.ti.com Terminal Functions TERMINAL NO. I/O DESCRIPTION NAME PWP-14 DGQ-10 I/O DESCRIPTION NAME TPS2145 TPS2155 TPS2147 TPS2157 EN1 14 10 I Logic level enable to transfer power to OUT1 EN1 14 10 I Logic level enable to transfer power to OUT1 EN2 13 9 I Logic level enable to transfer power to OUT2 EN2 13 9 I Logic level enable to transfer power to OUT2 GND 8 8 6 6 Ground LDO_ADJ 7 7 I User feedback for adjustable regulator LDO_EN 10 10 I Logic level LDO enable. Active high. LDO_OUT 4 4 4 4 O LDO output NC 6, 9 6, 9 No connection OC1 12 12 8 8 O Overcurrent status flag for OUT1. Open-drain output. OC2 11 11 7 7 O Overcurrent status flag for OUT2. Open-drain output. OUT1 1 1 1 1 O Switch 1 output OUT2 5 5 5 5 O Switch 2 output SWIN2 3 3 3 3 I Input for switch 2 VIN/SWIN1 2 2 2 2 I Input for LDO and switch 1; device supply voltage detailed description VIN/SWIN1 The VIN/SWIN1 serves as the input to the internal LDO and as the input to one N-channel MOSFET. The fixed or adjustable LDO has a dropout voltage of 0.35 V and is rated for 200 mA of continuous current. The power switch is an N-channel MOSFET with a maximum on-state resistance of 580 m Ω. Configured as a high-side switch, the power switch prevents current flow from OUT to IN and IN to OUT when disabled. The power switch is rated at 200 mA, continuous current. VIN/SWIN1 must be connected to a voltage source for device operation. SWIN2 SWIN2 is the input to the other N-channel MOSFET, which also has a maximum on-state resistance of 580 m Ω. Configured as a high-side switch, the power switch prevents current flow from OUT to IN and IN to OUT when disabled. The power switch is rated at 200 mA, continuous current. OUTx OUT1 and OUT2 are the outputs from the internal power-distribution switches. LDO_OUT LDO_OUT is the output of the internal 200-mA LDO. The fixed version of the LDO has an output of 3.3 V. The adjustable version has an output voltage range of 1 V to 3.3 V. LDO_ADJ This input only applies to the adjustable LDO version of this device (TPS2145/55). LDO_ADJ is used to adjust the output voltage anywhere between 1 V and 3.3 V. LDO_EN The active high input, LDO_EN, only applies to the adjustable LDO version of this device (TPS2145/55). LDO_EN is used to enable the internal LDO and is compatible with TTL and CMOS logic. |
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Description similaire - TPS2145IPWPR |
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