SSx Voltage
Junction Temperature
ESD Susceptibility
Human Body Model (Note 3)
Storage Temperature Range
−0.5V to 3V
+150°C
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
2kV
-65°C to 150°C
AVIN, PVIN
−0.5V to 22V
−0.5V to 22V
−0.5V to 26V
−0.5V to 6V
−0.5V to 3V
−0.5V to 22V
SWx Voltage
Operating Ratings (Note 1)
VIN
BSTx Voltage
3V to 20V
−40°C to +125°C
BSTx to SW Voltage
FBx Voltage
Junction Temperature
ENx Voltage (Note 2)
Electrical Characteristics
Unless otherwise stated, the following conditions apply: AVIN = PVIN = VIN = 5V. Limits in standard type are for TJ = 25°C only;
limits in boldface type apply over the junction temperature (TJ) 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 TJ = 25°C,
and are provided for reference purposes only.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
0°C to 85°C. Feedback Loop Closed.
0.591
0.611
VFB
Voltages at FB1 and FB2 Pins
0.6
V
-40°C to 125°C. Feedback Loop
Closed.
0.585
0.617
Line Regulation of FB1 and FB2
Voltages, Expressed as PPM
Change Per Volt of VIN
Variation
VIN = 3V to 20V
ΔVFB_LINE
66
ppm/V
IFB
VFB = 0.6V
Current in FB1 and FB2 Pins
0.4
2.7
2.3
0.36
0.52
96
250
2.9
nA
V
VIN Rises From 0V
VIN Falls From 3.3V
Under Voltage Lockout
Threshold
VUVLO
2.0
0.2
VUVLO_HYS
fSW
Hysteresis of UVLO Threshold
Switching Frequency
0.55
0.65
V
MHz
%
0.39
90
DMAX
Maximum Duty Cycle
Minimum Duty Cycle
DMIN
2
%
ETSSOP, 2A Drain Current
LLP, 2A Drain Current
175
194
320
350
ON Resistance of Internal
Power MOSFET
RDS_ON
mΩ
Peak Current Limit of Internal
MOSFET
ICL
ISD
2.5
2.5
3
2
4.5
A
Shutdown Current of AVIN Pin EN1 = EN2 = 0V
nA
Quiescent Current of AVIN Pin
(both channels are enabled but EN1 = EN2 = 5V, FB1 = FB2 = 0.7V
not switching)
IQ
4
mA
Input Logic High of EN1 and
EN2 Pins
VEN_IH
VEN_IL
IEN
V
V
Input Logic Low of EN1 and
EN2 Pins
0.4
EN1 and EN2 Currents (sink or
source)
5
1
nA
Switch Leakage Current
Measured at SW1 and SW2
Pins
ISW_LEAK
EN1 = EN2 = SWx = 0
µA
Phase Shift Between SW1 and Feedback Loop Closed. Continuous
170
180
16
190
deg
µA
ΔΦ
SW2 Rising Edges
Conduction Mode.
ISS
SSx Pin Current
11
21
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