Absolute Maximum Ratings (Note 1)
Infrared or Convection (20sec)
ESD Rating
235˚C
2 kV
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Operating Ratings
VCC
7V
21V
Supply Voltage (VCC
Junction Temperature Range
Thermal Resistance (θJA
)
4.5V to 5.5V
−40˚C to +125˚C
155˚C/W
BOOTV
Junction Temperature
Storage Temperature
Soldering Information
Lead Temperature
(soldering, 10sec)
150˚C
)
−65˚C to 150˚C
260˚C
Electrical Characteristics
VCC = 5V unless otherwise indicated. Typicals and limits appearing in plain type apply for TA=TJ=+25˚C. Limits appearing in
boldface type apply over full Operating Temperature Range. Datasheet min/max specification limits are guaranteed by design,
test, or statistical analysis.
Symbol
VFB_ADJ
VON
Parameter
Conditions
VCC = 4.5V, 0˚C to +125˚C
VCC = 5V, 0˚C to +125˚C
VCC = 5.5V, 0˚C to +125˚C
VCC = 4.5V, −40˚C to +125˚C
VCC = 5V, −40˚C to +125˚C
VCC = 5.5V, −40˚C to +125˚C
Rising
Min
Typ
0.6
0.6
0.6
0.6
0.6
0.6
4.2
3.6
Max
Units
0.591
0.591
0.591
0.589
0.589
0.589
0.609
0.609
0.609
0.609
0.609
0.609
FB Pin Voltage
V
UVLO Thresholds
V
Falling
SD = 5V, FB = 0.55V
Fsw = 600kHz
1
1.5
1.7
2
Operating VCC Current
mA
IQ-V5
SD = 5V, FB = 0.65V
Fsw = 600kHz
0.8
2.2
0.7
Shutdown VCC Current
SD = 0V
0.15
0.4
6
mA
µs
tPWGD1
tPWGD2
ISD
PWGD Pin Response Time
PWGD Pin Response Time
SD Pin Internal Pull-up Current
SS Pin Source Current
FB Voltage Going Up
FB Voltage Going Down
6
µs
20
µA
ISS-ON
SS Voltage = 2.5V
0˚C to +125˚C
8
5
11
11
15
15
µA
-40˚C to +125˚C
ISS-OC
SS Pin Sink Current During Over SS Voltage = 2.5V
Current
95
µA
µA
ISEN Pin Source Current Trip
Point
0˚C to +125˚C
35
28
50
50
65
65
ISEN-TH
-40˚C to +125˚C
ERROR AMPLIFIER
GBW
Error Amplifier Unity Gain
5
MHz
Bandwidth
G
Error Amplifier DC Gain
Error Amplifier Slew Rate
FB Pin Bias Current
60
6
dB
SR
IFB
V/µA
FB = 0.55V
0
0
15
30
2.8
0.8
1.2
3.2
100
155
nA
mA
V
FB = 0.65V
IEAO
VEA
EAO Pin Current Sourcing and
Sinking
VEAO = 2.5, FB = 0.55V
VEAO = 2.5, FB = 0.65V
Minimum
Error Amplifier Maximum Swing
Maximum
3
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