Datasheet

LM5119/LM5119Q
SNVS676F –AUGUST 2010–REVISED FEBRUARY 2013 www.ti.com
Electrical Characteristics
Limits in standard type are for T
J
= 25°C only; limits in boldface type apply over the junction temperature range of -40°C to
+125°C. Unless otherwise specified, the following conditions apply: VIN = 36V, VCC = 8V, VCCDIS = 0V, EN2 = 5V, R
T
=
25kΩ, no load on LO and HO. Electrical characteristics are per channel where applicable. See
(1)
,
(2)
, and
(3)
.
Symbol Parameter Conditions Min Typ Max Units
VIN Supply
I
BIAS
VIN Operating Current SS1 = SS2 = 0V 6 7.3 mA
VCCDIS = 2V, SS1 = SS2 = 0V 400 550 µA
I
VCC
VCC1 Operating Current VCCDIS = 2V, SS1 = SS2 = 0V 3.9 4.5 mA
VCC2 Operating Current VCCDIS = 2V, SS1 = SS2 = 0V 1.4 2.0 mA
I
SHUTDOWN
VIN Shutdown Current UVLO = 0V, SS1 = SS2 = 0V 18 50 µA
VCC Regulator
(4)
V
CC(REG)
VCC Regulation 6.77 7.6 8.34 V
VCC Regulation VIN = 6V, No external load 5.9 5.95 V
VCC Sourcing Current Limit VCC = 0V 25 40 mA
VCCDIS Switch Threshold VCCDIS Rising 1.19 1.25 1.29 V
VCCDIS Switch Hysteresis 0.07 V
VCCDIS Input Current VCCDIS = 0V -20 nA
VCC Under-voltage Threshold Positive going VCC 4.7 4.9 5.2 V
VCC Under-voltage Hysteresis 0.2 V
EN2 Input
V
IL
EN2 Input Low Threshold 2.0 1.5 V
V
IH
EN2 Input High Threshold 2.9 2.5 V
EN2 Input pull-up resistor 50 kΩ
UVLO
UVLO Threshold UVLO Rising 1.20 1.25 1.29 V
UVLO Hysterisis Current UVLO = 1.4V 15 20 25 µA
UVLO Shutdown Threshold 0.4 V
UVLO Shutdown Hysteresis Voltage 0.1 V
Soft Start
SS Current Source SS = 0V 7 10 13 µA
SS Pull Down R
DSON
10 Ω
Error Amplifier
V
REF
FB Reference Voltage Measured at FB pin, FB = COMP 0.788 0.8 0.812 V
FB Input Bias Current FB = 0.8V 1 nA
FB Disable Threshold Interleaved Threshold 2.5 V
COMP VOH Isource = 3mA 2.8 V
COMP VOL Isink = 3mA 0.31 V
A
OL
DC Gain 80 dB
f
BW
Unity Gain Bandwidth 3 MHz
PWM Comparators
t
HO(OFF)
Forced HO Off-time 220 320 430 ns
t
ON(min)
Minimum HO On-time C
RAMP
= 50pF 100 ns
(1) Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating ratings indicate conditions for which the
device is intended to be functional. For specifications and test conditions, see Electrical Characteristics.
(2) These pins must not exceed VIN
(3) Min and Max limits are 100% production tested at 25°C. Limits over the operating temperature range are specified through correlation
using Statistical Quality Control (SQC) methods. Limits are used to calculate Texas Instrument's Average Outgoing Quality Level
(AOQL).
(4) Per VCC Regulator.
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