Datasheet

LM2734Z
SNVS334E –JANUARY 2005–REVISED APRIL 2013 www.ti.com
Electrical Characteristics
Specifications with standard typeface are for T
J
= 25°C, and those in boldface type apply over the full Operating
Temperature Range (T
J
= -40°C to 125°C). V
IN
= 5V, V
BOOST
- V
SW
= 5V unless otherwise specified. Datasheet min/max
specification limits are specified by design, test, or statistical analysis.
Symbol Parameter Conditions Min
(1)
Typ
(2)
Max
(1)
Units
V
FB
Feedback Voltage 0.784 0.800 0.816 V
Feedback Voltage Line
ΔV
FB
/ΔV
IN
V
IN
= 3V to 20V 0.01 % / V
Regulation
I
FB
Feedback Input Bias Current Sink/Source 10 250 nA
Undervoltage Lockout V
IN
Rising 2.74 2.90
UVLO Undervoltage Lockout V
IN
Falling 2.0 2.3 V
UVLO Hysteresis 0.30 0.44 0.62
F
SW
Switching Frequency 2.2 3.0 3.6 MHz
D
MAX
Maximum Duty Cycle 78 85 %
D
MIN
Minimum Duty Cycle 8 %
V
BOOST
- V
SW
= 3V
300 600 mΩ
(SOT Package)
R
DS(ON)
Switch ON Resistance
V
BOOST
- V
SW
= 3V
340 650 mΩ
(WSON Package)
I
CL
Switch Current Limit V
BOOST
- V
SW
= 3V 1.2 1.7 2.5 A
I
Q
Quiescent Current Switching 1.5 2.5 mA
Quiescent Current (shutdown) V
EN
= 0V 30 nA
I
BOOST
Boost Pin Current (Switching) 4.25 6 mA
Shutdown Threshold Voltage V
EN
Falling 0.4
V
EN_TH
V
Enable Threshold Voltage V
EN
Rising 1.8
I
EN
Enable Pin Current Sink/Source 10 nA
I
SW
Switch Leakage 40 nA
(1) Specified to Texas Instruments' Average Outgoing Quality Level (AOQL).
(2) Typicals represent the most likely parametric norm.
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