Datasheet
LMZ10505
SNVS633H –JANUARY 2010–REVISED OCTOBER 2013
www.ti.com
Absolute Maximum Ratings
(1)(2)
VIN, VOUT, EN, FB, SS to GND -0.3V to 6.0V
ESD Susceptibility
(3)
±2 kV
Power Dissipation Internally Limited
Junction Temperature 150°C
Storage Temperature Range -65°C to 150°C
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 ensured 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 100 pF capacitor discharged through a 1.5 kΩ resistor into each pin. Test method is per JESD22-AI14S.
Operating Ratings
(1)
VIN to GND 2.95V to 5.5V
Junction Temperature(T
J
) -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
Specifications with standard typeface are for T
J
= 25°C only; limits in bold face type apply over the operating junction
temperature range T
J
of -40°C to 125°C. Minimum and maximum limits 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. V
IN
= V
EN
= 3.3V, unless otherwise indicated in the conditions column.
Symbol Parameter Conditions Min
(1)
Typ
(2)
Max
(1)
Units
SYSTEM PARAMETERS
V
FB
Total Feedback Voltage Variation V
IN
= 2.95V to 5.5V 0.78 0.8 0.82 V
Including Line and Load Regulation V
OUT
= 2.5V
I
OUT
= 0A to 5A
V
FB
Feedback Voltage Variation V
IN
= 3.3V, V
OUT
= 2.5V 0.787 0.8 0.812 V
I
OUT
= 0A
V
FB
Feedback Voltage Variation V
IN
= 3.3V, V
OUT
= 2.5V 0.785 0.798 0.81 V
I
OUT
= 5A
V
IN(UVLO)
Input UVLO Threshold (Measured at VIN Rising 2.6 2.95 V
pin)
Falling 1.95 2.4
I
SS
Soft-Start Current Charging Current 2 µA
I
Q
Non-Switching Input Current V
FB
= 1V 1.55 3 mA
I
SD
Shut Down Quiescent Current V
IN
= 5.5V, V
EN
= 0V 267 500 µA
I
OCL
Output Current Limit (Average Current) V
OUT
= 2.5V 5.1 7.3 8.7 A
f
FB
Frequency Fold-back In current limit 250 kHz
PWM SECTION
f
SW
Switching Frequency 750 1000 1160 kHz
D
range
PWM Duty Cycle Range 0 100 %
ENABLE CONTROL
V
EN-IH
EN Pin Rising Threshold 1.23 1.8 V
V
EN-IF
EN Pin Falling Threshold 0.8 1.06 V
(1) Min and Max limits are 100% production tested at an ambient temperature (T
A
) of 25°C. Limits over the operating temperature range are
ensured 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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