Datasheet
LMZ14202H
SNVS691E –JANUARY 2011–REVISED OCTOBER 2013
www.ti.com
Absolute Maximum Ratings
(1)(2)
VIN, RON to GND -0.3V to 43.5V
EN, FB, SS to GND -0.3V to 7V
Junction Temperature 150°C
Storage Temperature Range -65°C to 150°C
ESD Susceptibility
(3)
± 2 kV
Peak Reflow Case Temperature 245°C
(30 sec)
For soldering specifications, refer to the following document: www.ti.com/lit/snoa549c
(1) Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which
operation of the device is intended to be functional. For guaranteed specifications and test conditions, see the Electrical Characteristics.
(2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and
specifications.
(3) The human body model is a 100pF capacitor discharged through a 1.5 kΩ resistor into each pin. Test method is per JESD-22-114.
Operating Ratings
(1)
V
IN
6V to 42V
EN 0V to 6.5V
Operation Junction Temperature −40°C to 125°C
(1) Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which
operation of the device is intended to be functional. For guaranteed specifications and test conditions, see the Electrical Characteristics.
Electrical Characteristics
Limits in standard type are for T
J
= 25°C only; limits in boldface type apply over the junction temperature (T
J
) range of -40°C
to +125°C. Minimum and Maximum limits are guaranteed 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
= 24V, V
OUT
= 12V, R
ON
= 249kΩ
Min Typ Max
Symbol Parameter Conditions Units
(1) (2) (1)
SYSTEM PARAMETERS
Enable Control
V
EN
EN threshold trip point V
EN
rising 1.10 1.18 1.25 V
V
EN-HYS
EN threshold hysteresis 90 mV
Soft-Start
I
SS
SS source current V
SS
= 0V 8 10 15 µA
I
SS-DIS
SS discharge current -200 µA
Current Limit
I
CL
Current limit threshold DC average 2.4 3.2 3.95 A
VIN UVLO
VIN
UVLO
Input UVLO EN pin floating 3.75 V
V
IN
rising
VIN
UVLO-HYST
Hysteresis EN pin floating 130 mV
V
IN
falling
ON/OFF Timer
t
ON-MIN
ON timer minimum pulse width 150 ns
t
OFF
OFF timer pulse width 260 ns
Regulation and Over-Voltage Comparator
(1) Min and Max limits are 100% production tested at 25°C. Limits over the operating temperature range are guaranteed through correlation
using Statistical Quality Control (SQC) methods. Limits are used to calculate Average Outgoing Quality Level (AOQL).
(2) Typical numbers are at 25°C and represent the most likely parametric norm.
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