SLMA002 datasheet(4/55 Pages) TI1

tên linh kiện	SLMA002

Giải thích chi tiết về linh kiện	2-A DUAL NON-SYNCHRONOUS CONVERTER WITH INTEGRATED HIGH-SIDE MOSFET

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TPS54283,, TPS54286

SLUS749C – JULY 2007 – REVISED OCTOBER 2007

ELECTRICAL CHARACTERISTICS (continued)

–40

°C ≤ T

J ≤ +125°C, VPVDD1 = VPVDD2 = 12 V, unless otherwise noted.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

BOOTSTRAP

RBOOT1

From BP to BOOT1 or BP to BOOT2,

Bootstrap switch resistance

Ω

IEXT = 50 mA

RBOOT2

OUTPUT STAGE (Channel 1 and Channel 2)

TJ = +25°C, VPVDD2 = 8 V

100

RDS(on)

(3)

MOSFET on resistance plus bond wire resistance

Ω

–40

°C < T

J < +125°C, VPVDD2 = 8 V

100

180

tON(min)

(3)

Minimum controllable pulse width

ISWx peak current > 1 A

(4)

100

200

DMIN

Minimum Duty Cycle

VFB = 0.9 V

TPS54283 fSW = 300 kHz

DMAX

Maximum Duty Cycle

TPS54286 fSW = 600 kHz

ISW

Switching node leakage current (sourcing)

Outputs OFF

µA

THERMAL SHUTDOWN

TSD

(3)

Shutdown temperature

148

TSD(hys)

(3)

Hysteresis

°C

(3)

Ensured by design. Not production tested.

(4)

See Figure 14 for characteristics for ISWx peak current < 1 A.

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