TPS23521 datasheet(7/29 Pages) TI1

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TPS23521

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SLVSDX2 – SEPTEMBER 2017

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Electrical Characteristics (continued)

–40°C

≤ TJ ≤125°C, 1.1 mA < IVCC < 10 mA, V(UVEN) = 2 V, V(OV) = V(SNS) = V(D) = 0 V, V(SS) = GATEx = Hi-Z , V(TMR) = 0 V, ,

VVREF = VPROG = Hi-Z; All pin voltages are relative to VEE (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

R(SS,GATE)

Resistance between GATE

and SS in the start-up phase

Vref/PG

VVref/PG

Reference output

0 < IVref/PG < 800 µA

4.9

5.5

VGATE2,PG

Raise GATE2 until Vref/PG goes

high

7.25

IVref/PG

VVref/PG SC current

Vref/PG ON, VVref/PG (shorted)

OTSD (Over temperature shut down)

TSD1

Temp Rising

135

155

175

°C

Hysteresis

°C

6.6 Switching Characteristics

over operating free-air temperature range (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VCC – Clamped Supply

tID

Insertion Delay

VVCC: 0V → 10V, measure delay

before VGATE ↑

UVEN

TUV,degl

Deglitch on UVEN

µs

TOV,degl

Deglitch on OV

µs

SNS

TSNS,FST,R

ESP

Response time to large over current

VSNS steps from 0mV to 60mV.

Measure time for GATE and GATE2

to come down.

300

PGb

tPGb,DEGL

Deglitch of PGb. (raise GATE,

measure delay between GATE and

PGb)

Power Good

↑ (V(GATE) 0 V → 10 V)

Look for PGb

↓

Power Good

↓ (V(GATE) 10 V → 0 V)

Look for PGb

↑

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