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TPS65217D Datasheet(PDF) 3 Page - Texas Instruments |
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TPS65217D Datasheet(HTML) 3 Page - Texas Instruments |
3 / 89 page TPS65217 www.ti.com SLVSB64G – NOVEMBER 2011 – REVISED JANUARY 2015 5 Description (continued) These step-down converters enter a low power mode at light load for maximum efficiency across the widest possible range of load currents. For low-noise applications the devices can be forced into fixed frequency PWM using the I2C interface. The step-down converters allow the use of small inductors and capacitors to achieve a small solution size. LDO1 and LDO2 can support system-standby mode. In SLEEP state output current is limited to 1 mA to reduce quiescent current whereas in normal operation they can support up to 100 mA each. LDO3 and LDO4 can be configured to support up to 4 00 mA each and can be configured as load switches instead of regulators. All four LDOs have a wide input voltage range that allows them to be supplied either from one of the DC-DC converters or directly from the system voltage node. By default only LDO1 is always ON but any rail can be configured to remain up in SLEEP state. Especially the DC-DC converters can remain up in a low-power PFM mode to support system suspend mode. The TPS65217 offers configurable power-up and power-down sequencing and several housekeeping functions such as power-good output, pushbutton monitor, hardware reset function and temperature sensor to protect the battery. For details on specific applications please see our application note SLVU551. The TPS65217 comes in a 48-pin leadless package (6-mm x 6-mm QFN) with a 0.4-mm pitch. 6 Device Comparison Table TPS65217A TPS65217B TPS65217C TPS65217D (Targeted at AM335x - ZCE) (Targeted at AM335x - ZCZ) (Targeted at AM335x - ZCZ) (Targeted at AM335x - ZCZ) SEQUENCE SEQUENCE SEQUENCE SEQUENCE VOLTAGE (V) VOLTAGE (V) VOLTAGE (V) VOLTAGE (V) (STROBE) (STROBE) (STROBE) (STROBE) DCDC1 1.8 1 1.8 1 1.5 1 1.35 1 DCDC2 3.3 2 1.1 5 1.1 5 1.1 5 DCDC3 1.1 3 1.1 5 1.1 5 1.1 5 LDO1(1) 1.8 15 1.8 15 1.8 15 1.8 15 LDO2 3.3 2 3.3 2 3.3 3 3.3 3 3.3 1.8 1.8 LS1/LDO3 Load switch 1 3 2 2 (LDO, 200 mA) (LDO, 400 mA) (LDO, 400 mA) 3.3 3.3 3.3 LS2/LDO4 Load switch 4 4 4 4 (LDO, 200 mA) (LDO, 400 mA) (LDO, 400 mA) (1) Strobe 15 (LDO1) is the first rail to be enabled in a sequence, followed by strobe 1-7. See Wake-Up and Power-Up Sequencing for details. Copyright © 2011–2015, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: TPS65217 |
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