LM2736
www.ti.com
SNVS316F –SEPTEMBER 2004–REVISED APRIL 2013
Operating Ratings(1)
VIN
3V to 18V
-0.5V to 18V
-0.5V to 23V
1.6V to 5.5V
−40°C to +125°C
118°C/W
SW Voltage
Boost Voltage
Boost to SW Voltage
Junction Temperature Range
(2)
Thermal Resistance θJA
(1) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for
which the device is intended to be functional, but specific performance is not ensured. For specific specifications and the test conditions,
see Electrical Characteristics.
(2) Thermal shutdown will occur if the junction temperature exceeds 165°C. The maximum power dissipation is a function of TJ(MAX) , θJA
and TA . The maximum allowable power dissipation at any ambient temperature is PD = (TJ(MAX) – TA)/θJA . All numbers apply for
packages soldered directly onto a 3” x 3” PC board with 2oz. copper on 4 layers in still air. For a 2 layer board using 1 oz. copper in still
air, θJA = 204°C/W.
Electrical Characteristics
Specifications with standard typeface are for TJ = 25°C, and those in boldface type apply over the full Operating
Temperature Range (TJ = -40°C to 125°C). VIN = 5V, VBOOST - VSW = 5V unless otherwise specified. Datasheet min/max
specification limits are ensured by design, test, or statistical analysis.
Symbol
Parameter
Feedback Voltage
Conditions
Min(1)
Typ(2)
1.250
0.01
10
Max(1)
Units
V
VFB
1.225
1.275
ΔVFB/ΔVIN Feedback Voltage Line Regulation
VIN = 3V to 18V
% / V
nA
IFB
Feedback Input Bias Current
Undervoltage Lockout
Undervoltage Lockout
UVLO Hysteresis
Sink/Source
VIN Rising
VIN Falling
250
2.74
2.3
0.44
1.6
0.55
92
2.90
UVLO
2.0
0.30
1.2
0.40
85
V
0.62
1.9
LM2736X
FSW
DMAX
DMIN
Switching Frequency
Maximum Duty Cycle
Minimum Duty Cycle
MHz
%
LM2736Y
0.66
LM2736X
LM2736Y
90
96
LM2736X
2
%
LM2736Y
1
RDS(ON)
ICL
Switch ON Resistance
Switch Current Limit
VBOOST - VSW = 3V
VBOOST - VSW = 3V
Switching
350
1.5
1.5
30
650
2.3
2.5
mΩ
A
1.0
1.8
IQ
Quiescent Current
mA
nA
Quiescent Current (shutdown)
VEN = 0V
LM2736X (50% Duty Cycle)
LM2736Y (50% Duty Cycle)
VEN Falling
2.2
0.9
3.3
1.6
0.4
IBOOST
Boost Pin Current
mA
V
Shutdown Threshold Voltage
Enable Threshold Voltage
Enable Pin Current
VEN_TH
VEN Rising
IEN
Sink/Source
10
40
nA
nA
ISW
Switch Leakage
(1) Specified to Texas Instruments' Average Outgoing Quality Level (AOQL).
(2) Typicals represent the most likely parametric norm.
Copyright © 2004–2013, Texas Instruments Incorporated
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