LM27213

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SNVS377A – FEBRUARY 2006 – REVISED MARCH 2013

Electrical Characteristics (continued)

Specifications with standard typeface are for TJ = 25°C, and those in bold face type apply over a junction temperature range

of -5°C to +110°C. Unless otherwise specified, VDD = 5V, SGND = DGND = PGND = SRCK = 0V, unless otherwise stated.

(1)

Symbol

Parameter

Conditions

Min

Typ

Max

Units

Current Limit

IBCLC

Current Limit Comparator Input Bias

9

21

35

µA

Current

VOSCLC

Current Limit Comparator Input Offset

ILIMREF = 1.436V.

-2

2

mV

Voltage

Current Limit Setting Current

Rhys = 17kW, ILIMREF < ILIMx

280

337

395

µA

Rhys = 17kW, ILIMREF > ILIMx

250

µA

Rhys = 170kW, ILIMREF < ILIMx

30

µA

Time Delays

tBOOT

VBOOT Voltage Holdup Time

From assertion of XPOK to assertion of

10

17

30

µs

CLK_EN#.

t

CPU_PWRGD

Power Good Mask For Initial VID Voltage

From assertion of CLK_EN# to assertion

3

5

9

ms

Settling

of PGOOD.

tMASK

Power Good Mask For VID Changes

100

129

179

µs

tdPG

Power Good De-assertion Delay Upon

Delay From VR_ON de-assertion to

60

ns

Shutdown

PGOOD de-assertion

Over-voltage Protection

VTRIP

SENSE Voltage As A Percentage of

VOVP = V1R7

109

125

139

%

VOVP

System

DE_EN#LH

DE_EN# Input Logic High

0.63

0.56

V

DE_EN#LL

DE_EN# Input Logic Low

0.47

0.315

V

IDE_EN#

DE_EN# Pin Leakage Current

DE_EN# = 7.5V

6

100

µA

VSDT

Soft Shutdown Finish Threshold

Low-side driver enabled after shutdown

0.3

V

Drivers

Iqdriver

Driver Quiescent current

High drive = low, Low drive = high

14

100

µA

VCBOOT = VDVDD = 5V

Top Driver pull-up current

VDVdd = 5V, Load = 0.1Ω

3

A

Top Drive pull-up Rds_on

ICBOOT = IHG = 0.7A

1.2

Ω

Top Drive pull-down current

VDVdd = 5V, Load = 0.1Ω

-3.2

A

Top Drive pull-down Rds_on

Isw = IHG = 0.7A

0.6

Ω

TRISEHG

Top drive rise time

Cload = 3.3nF, (10% to 90%)

17

ns

tFALLHG

Top drive fall time

Cload = 3.3nF, (10% to 90%)

12

ns

Bottom driver pull-up current

VDVdd = 5V, Load = 0.1Ω

3.2

A

Bottom Drive pull-up Rds_on

ICBOOT = IlG = 0.7A

2.9

Ω

Bottom Drive pull-down currrent

VDVdd = 5V, Load = 0.1Ω

3.2

A

Bottom Drive pull-down Rds_on

Isw = IlG = 0.7A

0.6

Ω

TRISELG

Bottom Drive rise time

Cload = 3.3nF, (10% to 90%)

17

ns

TFALLLG

Bottom Drive fall time

Cload = 3.3nF, (10% to 90%)

14

ns

TDLY

Prop delay, CMP to top driver

CMP rising above CMPREF (20mV

89

ns

overdrive) to HG dropping to VSW + 0.9

VDVdd, Cload = 3.3nF

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