Datasheet
NRND
LM5109
SNVS369 –APRIL 2005
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.
Symbol Parameter Conditions Min
(1)
Typ Max
(1)
Units
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
0.28 0.45 V
V
OHL
High-Level Output Voltage I
LO
= −100 mA, V
OHL
= V
DD
– V
LO
0.45 0.75 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
0.28 0.45 V
V
OHH
High-Level Output Voltage I
HO
= −100 mA, V
OHH
= V
HB
– V
HO
0.45 0.75 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
SOIC-8 160
θ
JA
(2)
Junction to Ambient °C/W
WSON-8
(3)
40
(2) The θ
JA
is not a constant for the package and depends on the printed circuit board design and the operating conditions.
(3) 4 layer board with Cu finished thickness 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 (SNOA401).
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 Units
LM5109
t
LPHL
Lower Turn-Off Propagation Delay (LI Falling to LO Falling) 27 56 ns
t
HPHL
Upper Turn-Off Propagation Delay (HI Falling to HO Falling) 27 56 ns
t
LPLH
Lower Turn-On Propagation Delay (LI Rising to LO Rising) 29 56 ns
t
HPLH
Upper Turn-On Propagation Delay (HI Rising to HO Rising) 29 56 ns
t
MON
Delay Matching: Lower Turn-On and Upper Turn-Off 2 15 ns
t
MOFF
Delay Matching: Lower Turn-Off and Upper Turn-On 2 15 ns
t
RC
, t
FC
Either Output Rise/Fall Time C
L
= 1000 pF 15 - ns
t
PW
Minimum Input Pulse Width that Changes the Output 50 ns
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