TPS61281YFF datasheet(5/58 Pages) TI1

Part #	TPS61281YFF

Description	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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5 / 58 page

TPS61280

, TPS61281, TPS61282

www.ti.com

SLVSBI1 – OCTOBER 2013

ELECTRICAL CHARACTERISTICS (continued)

Minimum and maximum values are at VIN = 2.3V to 4.85V, VOUT = 3.4V (or VIN, whichever is higher), EN = 1.8V, VSEL =

1.8V, nBYP = 1.8V, –40°C

≤ TJ ≤ 125°C; Circuit of Parameter Measurement Information section (unless otherwise noted).

Typical values are at VIN = 3.2V, VOUT = 3.4V, EN = 1.8V, TJ = 25°C (unless otherwise noted).

PARAMETER

TEST CONDITIONS

MIN

TYP MAX

UNIT

TPS61280 VIN = 2.9V, VOUT = 3.5V, –40°C ≤ TJ ≤ 125°C,

Valley inductor current limit

2475

3000 3525

mA

TPS61281 auto PFM/PWM

VIN = 2.9V, VOUT = 3.5V, –40°C ≤ TJ ≤ 125°C,

Valley inductor current limit

TPS61282

3300

4000 4700

mA

auto PFM/PWM

EN = nBYP = GND, VIN = 3.2V

5000

mA

Pass through mode current limit TPS6128x

EN = VIN, nBYP = don't care , VIN = 3.2V

5600

7400 9100

mA

Pre-charge mode current limit

500

650

mA

(linear mode, phase 1)

TPS6128x

VIN - VOUT >= 300mV

Pre-charge mode current limit

2000

mA

(linear mode, phase 2)

OSCILLATOR

fOSC

Oscillator frequency

TPS6128x

VIN = 2.7V, VOUT = 3.5

2.3

MHz

THERMAL SHUTDOWN, HOT DIE DETECTOR

Thermal shutdown(1)

TPS6128x

140

160

°C

Hot die detector accuracy(1)

TPS61280

-10

105

+10

°C

(1)

Verified by characterization. Not tested in production.

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