TPS40170RGYR datasheet(6/49 Pages) TI1

No de pièce	TPS40170RGYR

Description	4.5-V TO 60-V WIDE-INPUT SYNCHRONOUS PWM BUCK CONTROLLER

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Fabricant	TI1 [Texas Instruments]

Site Internet	http://www.ti.com

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TPS40170

SLUS970

– MARCH 2011

www.ti.com

ELECTRICAL CHARACTERISTICS (continued)

Unless otherwise stated, these specifications apply for -40

ºC ≤ TJ ≤ 125ºC, VVIN=12 V

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

THERMAL SHUTDOWN

TSD,set

(3)

Thermal shutdown set threshold

155

165

175

°C

TSD,reset

(3)

Thermal shutdown reset threshold

4.5 V

< VVIN < 60 V

125

135

145

°C

Thyst

(3)

Thermal shutdown hysteresis

30

°C

POWER GOOD

VOV

FB pin voltage upper limit for power good

627

647

670

VUV

FB pin voltage lower limit for power good

527

552

570

mV

4.5 V

< VVIN < 60 V

VPG,HYST

Power good hysteresis voltage at FB pin

8.5

20.0

32.0

PGOOD pin voltage when FB pin voltage

>

VPG(out)

100

mV

VOV or < VUV, IPGD=2 mA

PGOOD pin voltage when device power is

VPG(np)

VVIN is open, 10-kΩ to VEXT = 5 V

1

1.5

V

removed

BOOT DIODE

VDFWD

Bootstrap diode forward voltage

I = 20 mA

0.5

0.7

0.9

V

RBOOT-SW

Discharge resistor from BOOT to SW

1

M

Ω

(3)

Ensured by design, not production tested.

6

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Texas Instruments	TPS40170	1Mb / 50P	[Old version datasheet] 4.5-V TO 60-V WIDE-INPUT SYNCHRONOUS PWM BUCK CONTROLLER
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