Datasheet

LMZ14203H
SNVS692D –JANUARY 2011–REVISED OCTOBER 2013 www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
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 (30 sec) 245°C
For soldering specifications, see the application note Absolute Maximum Ratings for Soldering (SNOA549)
(1) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and
specifications.
(2) 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 ensured specifications and test conditions, see the Electrical Characteristics.
(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 ensured 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 esnured 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
SYMBOL PARAMETER CONDITIONS MIN
(1)
TYP
(2)
MAX
(1)
UNITS
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 3.2 4.7 5.5 A
VIN UVLO
EN pin floating
VIN
UVLO
Input UVLO 3.75 V
V
IN
rising
EN pin floating
VIN
UVLO-HYST
Hysteresis 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
(1) Min and Max limits are 100% production tested at 25°C. Limits over the operating temperature range are ensured through correlation
using Statistical Quality Control (SQC) methods. Limits are used to calculate National’s Average Outgoing Quality Level (AOQL).
(2) Typical numbers are at 25°C and represent the most likely parametric norm.
4 Submit Documentation Feedback Copyright © 2011–2013, Texas Instruments Incorporated
Product Folder Links: LMZ14203H