TPS43337-Q1 datasheet(7/38 Pages) TI1

Part #	TPS43337-Q1

Description	LOW IQ, SINGLE-BOOST, FIXED-VOLTAGE DUAL SYNCHRONOUS BUCK CONTROLLER

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Manufacturer	TI1 [Texas Instruments]

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TPS43337-Q1

www.ti.com

SLVSBC2A – AUGUST 2013 – REVISED SEPTEMBER 2013

DC ELECTRICAL CHARACTERISTICS (continued)

VIN = 8 to 18 V, TJ = –40°C to +150°C (unless otherwise noted)

NO.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

12.0

Power Good / Delay

12.1a

PGthA

FBA falling

3.09

3.158

3.226

Power-good threshold

V

12.1b

PGthB

FBB falling

1.124

1.148

1.173

12.2

PGhys

Hysteresis

2%

12.3

PGdrop

Voltage drop

IPGA = 5 mA

450

mV

12.4

IPGA = 1 mA

100

mV

12.5

PGleak

Power-good leakage

Sx2 = PGx = 13 V

1

µA

12.6

tdeglitch

Power-good deglitch time

2

16

µs

External capacitor = 1 nF

12.7

tdelay

Reset delay

1

ms

VBUCKx < PGthx

12.8

tdelay_fix

Fixed reset delay

No external capacitor, pin open

20

50

µs

Activate current source (current

12.9

IOH

30

40

50

µA

to charge external capacitor)

Activate current sink (current to

12.10

IIL

30

40

50

µA

discharge external capacitor)

13.0

Overtemperature Protection

Junction-temperature shutdown

13.1

Tshutdown

150

165

°C

threshold

13.2

Thys

Junction-temperature hysteresis

15

°C

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