TPS2553DBVT datasheet(3/26 Pages) TI

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RECOMMENDED OPERATING CONDITIONS

ELECTRICAL CHARACTERISTICS

TPS2552

TPS2553, TPS2552-1, TPS2553-1

www.ti.com........................................................................................................................................ SLVS841A – NOVEMBER 2008 – REVISED DECEMBER 2008

MIN

MAX

UNIT

VIN

Input voltage, IN

2.5

6.5

VEN

TPS2552/52-1

6.5

Enable voltage

V/EN

TPS2553/53-1

6.5

VIH

High-level input voltage on EN or EN

1.1

VIL

Low-level input voltage on EN or EN

0.66

IOUT

Continuous output current, OUT

1.2

RILIM

Current-limit threshold resistor range (nominal 1%) from ILIM to GND

19.1

232

Ω

Continuous FAULT sink current

Input de-coupling capacitance, IN to GND

0.1

µF

Operating virtual junction

DRV and DBV

–40

125

°C

temperature

over recommended operating junction temperature range, 2.5 V

≤ VIN ≤ 6.5 V, 19.1 kΩ ≤ RILIM ≤ 232 kΩ, V/EN = 0 V, or VEN =

VIN, RFAULT = 10 kΩ (unless otherwise noted)

PARAMETER

TEST CONDITIONS(1)

MIN

TYP

MAX

UNIT

POWER SWITCH

DBV package, TJ = 25 °C

DBV package, –40 °C

≤TJ ≤125 °C

135

rDS(on)

Static drain-source on-state resistance DRV package, TJ = 25 °C

100

115

Ω

DRV package, –40 °C

≤TJ ≤105 °C

140

DRV package, –40 °C

≤TJ ≤125 °C

150

VIN = 6.5 V

1.1

1.5

Rise time, output

VIN = 2.5 V

0.7

1.0

CL = 1 µF, RL = 100 Ω,

(see Figure 2)

VIN = 6.5 V

0.2

0.5

Fall time, output

VIN = 2.5 V

0.2

0.5

ENABLE INPUT EN OR EN

Enable pin turn on/off threshold

0.66

1.1

IEN

Input current

VEN = 0 V or 6.5 V, V/EN = 0 V or 6.5 V

–0.5

0.5

µA

ton

Turnon time

CL = 1 µF, RL = 100 Ω, (see Figure 2)

toff

Turnoff time

CURRENT LIMIT

TJ = 25 °C

1215

1295

1375

RILIM =

20 k

Ω

–40 °C

≤TJ ≤125 °C

1200

1295

1375

TJ = 25 °C

490

520

550

Current-limit threshold (Maximum DC output current IOUT delivered to load) &

RILIM =

IOS

Short-circuit current, OUT connected to GND

49.9 k

Ω

–40 °C

≤TJ ≤125 °C

475

520

565

RILIM = 210 kΩ

110

130

150

ILIM shorted to IN

100

tIOS

Response time to short circuit

VIN = 5.0 V (see Figure 3)

µs

REVERSE-VOLTAGE PROTECTION

Reverse-voltage comparator trip point

135

190

(VOUT – VIN)

Time from reverse-voltage condition

VIN = 5.0 V

to MOSFET turn off

(1)

Pulse-testing techniques maintain junction temperature close to ambient temperature; thermal effects must be taken into account

separately.

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Product Folder Link(s): TPS2552 TPS2553 TPS2552-1 TPS2553-1

TPS2553DBVT 数据表(PDF) 3 Page - Texas Instruments

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