LM3492 Datasheet, PDF (5/24 Pages) National Semiconductor (TI) – Evaluation Board Reference Design integrates a boost converter

LM3492, LM3492Q
www.ti.com
SNVS656C – SEPTEMBER 2010 – REVISED MAY 2013
ELECTRICAL CHARACTERISTICS (continued)
Specification with standard type are for T_A = T_J = +25°C only; limits in boldface type apply over the full Operating Junction
Temperature (T_J) range. Minimum and Maximum are ensured through test, design or statistical correlation. Typical values
represent the most likely parametric norm at T_J = +25°C, and are provided for reference purposes only. Unless otherwise
stated the following conditions apply: V_IN = 12V.
Symbol
Parameter
Conditions
Min Typ Max Units
t_off
COMM PIN
OFF timer pulse width
145
350
ns
V_IOUT-OV
IOUT pin over-voltage threshold
V_COMM-LOW
COMM pin at LOW
I_LEAK-FAULT
COMM pin Open Leakage
Thermal Protection
COMM goes LOW during V_IOUT rising,
other V_IOUT = 1.2V
5 mA into COMM
V_COMM = 5V
5.6
6.7
7.8
V
0.7
V
5
µA
T_OTM
T_OTM-HYS
T_SD
T_SD-HYS
Over-temperature indication
Over-temperature indication hysteresis
Thermal shutdown temperature
Thermal shutdown temperature hysteresis
T_J rising
T_J falling
T_J rising
T_J falling
135
°C
15
°C
165
°C
20
°C
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