TPS61282A datasheet(3/54 Pages) TI1

Part #	TPS61282A

Description	TPS6128xA Low-, Wide- Voltage Battery Front-End DC/DC Converter Single-Cell Li-Ion, Ni-Rich, Si-Anode Applications

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Manufacturer	TI1 [Texas Instruments]

Direct Link	http://www.ti.com

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TPS61280A, TPS61281A, TPS61282A

www.ti.com

SLVSCG9A – MAY 2014 – REVISED SEPTEMBER 2014

6 Device Comparison Table

DEVICE

PART NUMBER(1)

SPECIFIC FEATURES

DC/DC boost / bypass threshold = 3.15V (Vsel = L)

I2C Control Interface

TPS61280A

DC/DC boost / bypass threshold = 3.35V (Vsel = H)

User Prog. E2PROM Settings

Valley inductor current limit = 3A

DC/DC boost / bypass threshold = 3.15V (Vsel = L)

TPS61281A

Simple Logic Control Interface

DC/DC boost / bypass threshold = 3.35V (Vsel = H)

Valley inductor current limit = 3A

DC/DC boost / bypass threshold = 3.3V (Vsel = L)

TPS61282A

Simple Logic Control Interface

DC/DC boost / bypass threshold = 3.5V (Vsel = H)

Valley inductor current limit = 4A

(1)

The 'A’ version has lower ripple and overshoot, supports Forced PWM at startup but with a 0.4

μA higher IQ.

7 Description (continued)

TPS6128xA device supports more than 4A pulsed load current even from a deeply discharged battery. In this

mode of operation, the TPS6128xA enables the utilization of the full battery capacity: A high battery-cut-off

voltage originated by powered components with a high minimum input voltage is overcome; new battery

chemistries can be fully discharged; high current pulses forcing the system into shutdown are buffered by the

device seamlessly transitioning between boost and by-pass mode back and forth.

This has significant impact on the battery on-time and translates into either a longer use-time and better user-

experience at an equal battery capacity or into reduced battery costs at similar use-times.

The TPS6128xA offers a small solution size (< 20mm2) due to minimum amount of external components,

enabling the use of small inductors and input capacitors, available as a 16-pin chip-scale package (CSP).

The TPS6128xA operates in synchronous, 2.3MHz boost mode and enters power-save mode operation (PFM) at

light load currents to maintain high efficiency over the entire load current range.

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Product Folder Links: TPS61280A TPS61281A TPS61282A

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