Datasheet > TPS54425_10

TPS54425_10

更新时间： 2022-09-17 20:20:55

品牌	Logo	应用领域
德州仪器 - TI		输出元件
页数	文件大小	规格书
22页	641K
描述
4-A OUTPUT SINGLE SYNCHRONOUS STEP DOWN SWITCHER WITH INTEGRATED FET ( SWIFT?)

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TPS54425_10 数据手册

TPS54425

SLVSA84 –AUGUST 2010

www.ti.com

ELECTRICAL CHARACTERISTICS (continued)

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

PARAMETER

THERMAL SHUTDOWN

TEST CONDITIONS

MIN

TYP

MAX

UNIT

(2)

Shutdown temperature

165

T_SDN

Thermal shutdown threshold

°C

(2)

Hysteresis

ON-TIME TIMER CONTROL

T_ON

On time

V_IN= 12 V, V_O= 1.05 V

T_A= 25°C, V_FB= 0.7 V

145

260

T_OFF(MIN)

Minimum off time

310

2.6

SOFT START

I_SSCSS charge current

I_SSDSS discharge current

POWER GOOD

V_SS= 0 V

1.4

0.1

2.0

0.2

V_SS= 0.5 V

V_FBrising (good)

V_FBfalling (fault)

PG = 0.5 V

2.5

115

V_THPG

PG threshold

I_PG

PG sink current

OUTPUT UNDERVOLTAGE AND OVERVOLTAGE PROTECTION

V_OVP

Output OVP trip threshold

Output OVP prop delay

OVP detect

120

125

T_OVPDEL

UVP detect

Hysteresis

V_UVP

Output UVP trip threshold

T_UVPDEL

T_UVPEN

UVLO

Output UVP delay

0.25

x 1.7

Output UVP enable delay

Relative to soft-start time

Wake up V_REG5voltage

Hysteresis V_REG5voltage

3.55

0.23

3.8

4.05

0.47

V_UVLO

UVLO threshold

0.35

(2) Not production tested.

Product Folder Link(s): TPS54425

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