TPS2070, TPS2071

FOUR-PORT USB HUB POWER CONTROLLERS

SLVS287A – SEPTEMBER 2000 – REVISED FEBRUARY 2001

10

POST OFFICE BOX 655303

electrical characteristics over recommended operating junction temperature range,

4.5 V

voltage regulator controller

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VO(CP)

Output voltage, charge pump

VI(VEXT) = 6 V,

IO(VCP) = 5 mA

C(CP_P) = 10 nF, C(VCP)=100 nF

10

V

fosc

Oscillator frequency (see Note 1)

6 V

≤ VI(VEXT) ≤ 9 V, IO(VCP) = 5 mA,

VO(VCP)= 10 V

850

kHz

Gate drive current

Sourcing

VI(VCP) = 9 V, VO(GATE) = 7.5 V,

VI(SP) = 4.5 V

500

µA

Gate drive current

Sinking

VI(VCP) = 9 V, VO(GATE) = 5.5 V,

VI(SP) = 5.5 V

1.5

mA

Open-loop gain (see Note 1)

VI(VEXT) = 6 V, 0.5 V ≤ VO(GATE) ≤ 9 V

80

dB

Reference voltage at VI(SP), using external

regulator

VI(VEXT) = 6 V to 9 V, IRLZ24N FET

4.90

5.1

5.25

V

Gate clamp voltage

Gate to SP

10

V

NOTE 1: Specified by design, not tested in production.

power switch timing requirements

PARAMETER

TEST CONDITIONS†

MIN

TYP

MAX

UNIT

t

Turnon time (see Note 1)

BP to OUTx

switch

VI(BP) = 5 V, VI(SP) = open, TA = 25°C,

CL = 100 µF, RL = 50 Ω

4.5

ms

ton

Turnon time (see Note 1)

SP to OUTx

switch

VI(SP) = VI(BP) = 5 V, TA = 25°C,

CL = 100 µF, RL = 10 Ω

4.5

ms

t ff

Turnoff time (see Note 1)

BP to OUTx

switch

VI(BP) = 5 V, VI(SP) = open, TA = 25°C,

CL = 100 µF, RL = 50 Ω

15

ms

toff

Turnoff time (see Note 1)

SP to OUTx

switch

VI(SP) = VI(BP) = 5 V, TA = 25°C,

CL = 100 µF, RL = 10 Ω

10

ms

t

Rise time output (see Note 1)

BP to OUTx

switch

VI(BP) = 5 V, VI(SP) = open, TA = 25°C,

CL = 100 µF, RL = 50 Ω

4

ms

tr

Rise time, output (see Note 1)

SP to OUTx

switch

VI(SP) = VI(BP) = 5 V, TA = 25°C,

CL = 100 µF, RL = 10 Ω

3

ms

tf

Fall time output (see Note 1)

BP to OUTx

switch

VI(BP) = 5 V, VI(SP) = open, TA = 25°C,

CL = 100 µF, RL = 50 Ω

10

ms

tf

Fall time, output (see Note 1)

SP to OUTx

switch

VI(SP) = VI(BP) = 5 V, TA = 25°C,

CL = 100 µF, RL = 10 Ω

3

ms

† Pulse-testing techniques maintain junction temperature close to ambient temperature; thermal effects must be taken into account separately.

NOTE 1. Specified by design, not tested in production.

thermal shutdown

PARAMETER

MIN

TYP

MAX

UNIT

TJ

Thermal shutdown

First

140

°C

TJ

Thermal shutdown

Second

150

°C

Hysteresis

First

15

°C

Hysteresis

Second

25

°C