TPS2552DBVT datasheet(3/31 Pages) TI

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RECOMMENDED OPERATING CONDITIONS

ELECTRICAL CHARACTERISTICS

TPS2552

TPS2553, TPS2552-1, TPS2553-1

www.ti.com...................................................................................................................................... SLVS841C – NOVEMBER 2008 – REVISED SEPTEMBER 2009

MIN

MAX

UNIT

VIN

Input voltage, IN

2.5

6.5

VEN

TPS2552/52-1

6.5

Enable voltage

VEN

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

–40 °C

≤ TJ ≤ 125 °C

1.2

IOUT

Continuous output current, OUT

–40 °C

≤ TJ ≤ 105 °C

1.5

RILIM

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

232

Ω

Continuous FAULT sink current

Input de-coupling capacitance, IN to GND

0.1

µF

IOUT ≤ 1.2 A

–40

125

Operating virtual junction

°C

temperature(1)

IOUT ≤ 1.5 A

-40

105

(1)

See "Dissipation Rating Table" and "Power Dissipation and Junction Temperature" sections for details on how to calculate maximum

junction temperature for specific applications and packages.

over recommended operating conditions, 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

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

RILIM =

–40 °C

≤TJ ≤105 °C

1610

1700

1800

15 k

Ω

TJ = 25 °C

1215

1295

1375

RILIM =

20 k

Ω

–40 °C

≤TJ ≤125 °C

1200

1295

1375

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

IOS

Short-circuit current, OUT connected to GND

TJ = 25 °C

490

520

550

RILIM =

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 V (see Figure 3)

µs

REVERSE-VOLTAGE PROTECTION

Reverse-voltage comparator trip point

135

190

(VOUT – VIN)

Time from reverse-voltage condition

VIN = 5 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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