Datasheet
LM5109A
SNVS412A –APRIL 2006–REVISED MARCH 2013
www.ti.com
Electrical Characteristics (continued)
Specifications in standard typeface are for T
J
= 25°C, and those in boldface type apply over the full operating junction
temperature range. Unless otherwise specified, V
DD
= V
HB
= 12V, V
SS
= V
HS
= 0V, No Load on LO or HO
(1)
.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNIT
I
HBS
HB to V
SS
current, quiescent V
HS
= V
HB
= 90V 0.1 10 µA
I
HBSO
HB to V
SS
current, operating f = 500 kHz 0.5 mA
Input Pins LI and HI
V
IL
Low-level input voltage threshold 0.8 1.8 V
V
IH
High-level input voltage threshold 1.8 2.2 V
R
I
Input pulldown resistance 100 200 500 kΩ
Under-Voltage Protection
V
DDR
V
DD
rising threshold V
DDR
= V
DD
– V
SS
6.0 6.7 7.4 V
V
DDH
V
DD
threshold hysteresis 0.5 V
V
HBR
HB rising threshold V
HBR
= V
HB
– V
HS
5.7 6.6 7.1 V
V
HBH
HB threshold hysteresis 0.4 V
LO Gate Driver
V
OLL
Low-level output voltage I
LO
= 100 mA, V
OHL
= V
LO
– V
SS
0.38 0.65 V
V
OHL
High-level output voltage I
LO
= −100 mA, V
OHL
= V
DD
– V
LO
0.72 1.20 V
I
OHL
Peak pullup current V
LO
= 0V 1.0 A
I
OLL
Peak pulldown current V
LO
= 12V 1.0 A
HO Gate Driver
V
OLH
Low-level output voltage I
HO
= 100 mA, V
OLH
= V
HO
– V
HS
0.38 0.65 V
V
OHH
High-level output voltage I
HO
= −100 mA, V
OHH
= V
HB
– V
HO
0.72 1.20 V
I
OHH
Peak pullup current V
HO
= 0V 1.0 A
I
OLH
Peak pulldown current V
HO
= 12V 1.0 A
Thermal Resistance
θ
JA
SOIC
(2)(3)
160
Junction to ambient °C/W
WSON
(2)(3)
40
(2) 4-layer board with Cu finished thicknesses 1.5/1/1/1.5 oz. Maximum die size used. 5x body length of Cu trace on PCB top. 50 x 50mm
ground and power planes embedded in PCB. See Application Note AN-1187.
(3) The θ
JA
is not a constant for the package and depends on the printed circuit board design and the operating conditions.
Switching Characteristics
Specifications in standard typeface are for T
J
= 25°C, and those in boldface type apply over the full operating junction
temperature range. Unless otherwise specified, V
DD
= V
HB
= 12V, V
SS
= V
HS
= 0V, No Load on LO or HO.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNIT
LM5109A
t
LPHL
Lower turn-off propagation delay
30 56 ns
(LI falling to LO falling)
t
HPHL
Upper turn-off propagation delay
30 56 ns
(HI falling to HO falling)
t
LPLH
Lower turn-on propagation delay
32 56 ns
(LI rising to LO rising)
t
HPLH
Upper turn-on propagation delay
32 56 ns
(HI rising to HO rising)
t
MON
Delay matching: lower turn-on and upper
2 15 ns
turn-off
t
MOFF
Delay matching: lower turn-off and upper
2 15 ns
turn-on
t
RC
, t
FC
Either output rise or fall time C
L
= 1000 pF 15 - ns
t
PW
Minimum input pulse width that changes
50 ns
the output
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