LM2734
SNVS288I – SEPTEMBER 2004 – REVISED APRIIL 2013
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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 ensured 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
Δ
V
FB
/
Δ
V
IN
Feedback Voltage Line Regulation
V
IN
= 3V to 20V
0.01
% / V
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
LM2734X
1.2
1.6
1.9
F
SW
Switching Frequency
MHz
LM2734Y
0.40
0.55
0.66
LM2734X
85
92
D
MAX
Maximum Duty Cycle
%
LM2734Y
90
96
LM2734X
2
D
MIN
Minimum Duty Cycle
%
LM2734Y
1
R
DS(ON)
Switch ON Resistance
V
BOOST
- V
SW
= 3V
300
600
m
Ω
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
LM2734X (50% Duty Cycle)
2.5
3.5
I
BOOST
Boost Pin Current
mA
LM2734Y (50% Duty Cycle)
1.0
1.8
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 Average Outgoing Quality Level (AOQL).
(2)
Typicals represent the most likely parametric norm.
4
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