TPS61253_15 datasheet(7/33 Pages) TI

7 / 33 page

TPS61253, TPS61254, TPS61256, TPS61258, TPS61259

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SLVSAG8E – SEPTEMBER 2011 – REVISED MARCH 2015

Electrical Characteristics (continued)

Minimum and maximum values are at VIN = 2.3V to 5.5V, EN = 1.8V, TA = –40°C to 85°C; Circuit of Parameter Measurement

Information section (unless otherwise noted). Typical values are at VIN = 3.6V, EN = 1.8V, TA = 25°C (unless otherwise

noted).

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

TPS61253

EN = VIN, BP = GND. Open Loop

3300

3620

3900

TPS61258

TPS61259

Switch valley current limit

TPS61254

ILIM

TPS61256

EN = VIN, BP = GND. Open Loop

1900

2150

2400

TPS61257

Pre-charge mode current limit

EN = GND, BP = VIN

165

215

265

(linear mode)

Overtemperature protection

140

°C

Overtemperature hysteresis

°C

OSCILLATOR

fOSC

Oscillator frequency

VIN = 3.6V VOUT = 4.5V

3.5

MHz

TIMING

BP = GND, IOUT = 0mA.

TPS6125x

µs

Time from active EN to start switching

TPS61253

Start-up time

TPS61254

BP = GND, IOUT = 0mA.

TPS61256

400

µs

Time from active EN to VOUT

TPS61258

TPS61259

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