Datasheet

LM5023
SNVS961D –APRIL 2013–REVISED JANUARY 2014 www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
Minimum and Maximum apply over the junction temperature range of –40°C to +125° C. Minimum and maximum limits are
specified through test, design, or statistical correlation. Typical values represent the most likely parametric norm at +25°C,
and are provided for reference purposes only. Unless otherwise specified, the following conditions apply: VCC = 10 V, F
SW
=
100 kHz 50% Duty Cycle, No Load on OUT.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
CURRENT LIMIT
V
CS
Cycle-by-cycle sense voltage
450 500 550 mV
threshold
T
LEB
Leading edge blanking time 130 ns
T
PCS
Current limit to OUT delay CS step from 0 to 0.6 V time to onset
22 ns
of OUT transition low, C
LOAD
= 0
R
LEB
CS blanking sinking impedance 15 35 Ω
G
CM
Current mirror gain I
QR
= 2 ma 100 A/A
C
FF
Current feed forward I
QR
= 2 ma 140 mV
HICCUP MODE
T
OL_
10 Over load detection timer I
VSD
= 10 uA 12 ms
T
OL_
100 Over load detection timer I
VSD
= 100 uA 1.2 ms
OUTPUT GATE DRIVER
V
OH
OUT high saturated I
OUT
= 50 mA, VCC-OUT 0.3 1.1 V
V
OL
OUT low saturated I
OUT
= 100 mA 0.3 1 V
I
PH
Peak OUT source current OUT = VCC/2 0.3 A
I
PL
Peak OUT sink current OUT = VCC/2 0.7 A
t
r
Rise time C
LOAD
= 1 nF 25 ns
t
f
Fall time C
LOAD
= 1 nF 15 ns
SOFT-START
I
SS
Soft-start 17 22 30 µA
THERMAL
T
SD
Thermal shutdown temp 165 ºC
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