Datasheet
LMR10520
SNVS730B –OCTOBER 2011–REVISED APRIL 2013
www.ti.com
Electrical Characteristics
(1)(2)
VIN = 5V unless otherwise indicated under the Conditions column. 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 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.
Parameter Test Conditions Min Typ Max Units
V
FB
Feedback Voltage 0.588 0.600 0.612 V
ΔV
FB
/V
IN
Feedback Voltage Line Regulation V
IN
= 3V to 5V 0.02 %/V
I
B
Feedback Input Bias Current 0.1 100 nA
V
IN
Rising 2.73 2.90 V
Undervoltage Lockout
UVLO V
IN
Falling 1.85 2.3
UVLO Hysteresis 0.43 V
LMR10520-X 1.2 1.6 1.95
F
SW
Switching Frequency MHz
LMR10520-Y 2.25 3.0 3.75
LMR10520-X 86 94
D
MAX
Maximum Duty Cycle %
LMR10520-Y 82 90
LMR10520-X 5
D
MIN
Minimum Duty Cycle %
LMR10520-Y 7
R
DS(ON)
Switch On Resistance 150 mΩ
I
CL
Switch Current Limit V
IN
= 3.3V 2.4 3.25 A
Shutdown Threshold Voltage 0.4
V
EN_TH
V
Enable Threshold Voltage 1.8
I
SW
Switch Leakage 100 nA
I
EN
Enable Pin Current Sink/Source 100 nA
LMR10520X V
FB
= 0.55 3.3 5
I
Q
Quiescent Current (switching) mA
LMR10520Y V
FB
= 0.55 4.3 6.5
Quiescent Current (shutdown) All Options V
EN
= 0V 30 nA
Junction to Ambient 80
θ
JA
°C/W
0 LFPM Air Flow
(3)
θ
JC
Junction to Case 18 °C/W
T
SD
Thermal Shutdown Temperature 165 °C
(1) Min and Max limits are 100% production tested at 25°C. Limits over the operating temperature range are specified 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.
(3) Applies for packages soldered directly onto a 3” x 3” PC board with 2oz. copper on 4 layers in still air.
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