TPS54356-EP datasheet(4/35 Pages) TI1

Part #	TPS54356-EP

Description	4.5-V TO 20-V INPUT, 3-A OUTPUT SYNCHRONOUS PWM SWITCHES

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Manufacturer	TI1 [Texas Instruments]

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Electrostatic Discharge (ESD) Protection

Recommended Operating Conditions

Electrical Characteristics

TPS54352-EP

,, TPS54353-EP,, TPS54354-EP

TPS54355-EP

, TPS54356-EP, TPS54357-EP

SLVS684A – JANUARY 2007 – REVISED JULY 2009 ....................................................................................................................................................... www.ti.com

MIN

MAX

UNIT

Human-Body Model (HBM)

600

V

Charged-Device Model (CDM)

1.5

kV

MIN

MAX

UNIT

TPS54352-6

4.5

20

Input voltage range, VI

V

TPS54357

6.65

20

Operating junction temperature, TJ

–55

125

°C

TJ = –55°C to 125°C, VIN = 4.5 V to 20 V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Supply Current

Operating current, PH pin open,

5

No external low side MOSFET, RT = Hi-Z

IQ

Quiescent current

mA

Shutdown, ENA = 0 V

1

TPS54352-6

4.32

4.48

Start threshold

V

voltage

TPS54357

6.4

6.65

TPS54352-6

3.69

3.97

Stop threshold

VIN

V

voltage

TPS54357

5.45

5.8

TPS54352-6

350

Hysteresis

mV

TPS54357

600

Output Voltage

TJ = 25°C, IO = 100 mA to 3 A

1.88

1.2

1.212

TPS54352

IO = 100 mA to 3 A

1.176

1.2

1.224

TJ = 25°C, IO = 100 mA to 3 A

1.485

1.5

1.515

TPS54353

IO = 100 mA to 3 A

1.47

1.5

1.53

TJ = 25°C, IO = 100 mA to 3 A

1.782

1.8

1.818

TPS54354

IO = 100 mA to 3 A

1.764

1.8

1.836

TJ = 25°C, IO = 100 mA to 3 A

2.475

2.5

2.525

VO

Output voltage

V

TPS54355

IO = 100 mA to 3 A

2.45

2.5

2.55

TJ = 25°C, VIN = 5.5 V to 20 V,

3.267

3.3

3.333

IO = 100 mA to 3 A

TPS54356

VIN = 5.5 V to 20 V, IO = 100 mA to 3 A

3.234

3.3

3.366

TJ = 25°C, VIN = 7.5 V to 20 V,

4.95

5

5.05

IO = 100 mA to 3 A

TPS54357

VIN = 7.5 V to 20 V, IO = 100 mA to 3 A

4.9

5

5.1

Under Voltage Lockout (UVLO)

Start threshold voltage

1.2

1.25

V

UVLO

Stop threshold voltage

1.02

1.1

V

Hysteresis

100

mV

Bias Voltage (VBIAS)

IVBIAS = 5 mA, VIN ≥ 12 V

7.5

7.8

8

VBIAS

Output voltage

V

IVBIAS = 5 mA, VIN = 4.5 V

4.4

4.47

4.5

Oscillator (RT)

RT grounded

200

250

300

Internally set PWM switching frequency

kHz

RT open

400

500

600

Externally set PWM switching frequency

RT = 100 k

Ω (1% resistor to AGND)

425

500

575

kHz

4

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