Datasheet
LMZ14202H
www.ti.com
SNVS691E –JANUARY 2011–REVISED OCTOBER 2013
Electrical Characteristics (continued)
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)
V
FB
In-regulation feedback voltage V
IN
= 24V, V
OUT
= 12V V
SS
>+ 0.8V 0.782 0.803 0.822 V
T
J
= -40°C to 125°C
I
OUT
= 10mA to 2A
V
IN
= 24V, V
OUT
= 12V V
SS
>+ 0.8V 0.786 0.803 0.818 V
T
J
= 25°C
I
OUT
= 10mA to 2A
V
FB
In-regulation feedback voltage V
IN
= 36V, V
OUT
= 24V V
SS
>+ 0.8V 0.780 0.803 0.824 V
T
J
= -40°C to 125°C
I
OUT
= 10mA to 2A
V
IN
= 36V, V
OUT
= 24V V
SS
>+ 0.8V 0.787 0.803 0.819 V
T
J
= 25°C
I
OUT
= 10mA to 2A
V
FB-OVP
Feedback over-voltage protection 0.92 V
threshold
I
FB
Feedback input bias current 5 nA
I
Q
Non Switching Input Current V
FB
= 0.86V 1 mA
I
SD
Shut Down Quiescent Current V
EN
= 0V 25 μA
Thermal Characteristics
T
SD
Thermal Shutdown Rising 165 °C
T
SD-HYST
Thermal Shutdown Hysteresis 15 °C
θ
JA
Junction to Ambient 4 layer Printed Circuit Board, 7.62cm x 16 °C/W
7.62cm (3in x 3in) area, 1 oz Copper, No
air flow
4 layer Printed Circuit Board, 6.35cm x 18.4 °C/W
6.35cm (2.5in x 2.5in) area, 1 oz Copper,
No air flow
θ
JC
Junction to Case No air flow 1.9 °C/W
PERFORMANCE PARAMETERS
ΔV
OUT
Output Voltage Ripple V
OUT
= 5V, C
O
= 100µF 6.3V X7R 8 mV
PP
ΔV
OUT
/ΔV
IN
Line Regulation V
IN
= 16V to 42V, I
OUT
= 3A .01 %
ΔV
OUT
/ΔI
OUT
Load Regulation V
IN
= 24V, I
OUT
= 0A to 2A 1.5 mV/A
η Efficiency V
IN
= 24V V
OUT
= 12V I
OUT
= 1A 93 %
η Efficiency V
IN
= 24V V
OUT
= 12V I
OUT
= 2A 92 %
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