TPIC74100-Q1 datasheet(5/30 Pages) TI

No de pièce	TPIC74100-Q1

Description	BUCK/BOOST SWITCH-MODE REGULATOR

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Fabricant	TI [Texas Instruments]

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ELECTRICAL CHARACTERISTICS

TPIC74100-Q1

BUCK/BOOST SWITCH-MODE REGULATOR

SLIS125 – DECEMBER 2006

V

(driver) = 6 V to 17 V, TA = -40°C to 125°C, unless otherwise noted

Parameters

TEST CONDITIONS

Min

Typ

Max

Unit

V(driver)

Unregulated input voltage

1.5

40

V

V(driver)

Start-up condition voltage

IO = 600 mA

5

V

CO = 36 µF (min) to 220 µF (max)

4

20

SOM

Soft-start ramp

V/ms

CO = 220 µF (min) to 470 µF (max), see

2

20

Note (1)

I(standby)

Standby current

ENABLE = low

10

20

µA

Iq

Quiescent current

CLP = 0 V, V(driver) = 11 V, IO = 0 mA

100

160

µA

VO

Output voltage

DC

5

V

Normal mode

2%

VO

Output-voltage tolerance

Boost/buck crossover or low-power

3%

mode

IO

Output current

V(driver)≥ 7 V

1

A

V(driver) = 2 V, see Note (2)

200

IO(Boost)

Output current, boost mode

mA

V(driver)= 1.5 V, see Note (2)

120

Internal peak current limit (normal

IPPn

(1)

1.75

2.5

A

mode)

Internal peak current limit (low-power

IPPl

(1)

0.75

1.25

mode)

IP

Peak current

V(driver) = 16 V, IO = 1 A, and L = 33 µH

1.5

A

Boost/buck crossover voltage

V(driver)

See Note (3)

5

5.9

V

window

Tot

Thermal shutdown(4)

160

180

200

°C

5Vg Output and ENABLE

rDS(on)

On-state resistance

135

225

m

Ω

IO

Output current

400

mA

VI

5Vg_ENABLE input-voltage range

–0.5

VO

V

VIH

5Vg_ENABLE threshold high voltage V(5Vg) = 5 V

2.5

3

3.5

V

VIL

5Vg_ENABLE threshold low voltage

V(5Vg) = 0 V

1.5

2

2.5

V

V(hys)

Hysteresis voltage

0.5

1

V

r(pd)

Internal pulldown resistor

300

500

850

k

Ω

ENABLE

VI

ENABLE input-voltage range

–0.5

40

V

8 V

≤ V

(driver) ≤ 17 V

2.5

3

3.5

VIH

ENABLE threshold high voltage

V

6 V

≤ V

(driver) < 8 V

1.9

3

3.5

VIL

ENABLE threshold low voltage

VO = 5 V

1.5

2

2.5

V

8 V

≤ V

(driver) ≤ 17 V

0.5

1

V(hys)

Hysteresis voltage

V

6 V

≤ V

(driver) < 8 V

0.1

(1)

Ensured by characterization.

(2)

Tested with inductor having following characteristics: L = 33 µH, Rmax = 0.1 Ω, IR = 1.8 A. Output current must be verified in application

when inductor Rmax (ESR) is increased.

(3)

Ensured by characterization. For further details, see the Buck/Boost Transitioning section.

(4)

Ensured by characterization; hysteresis 15°C (typical)

5

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