PS0020
ABSOLUTE MAXIMUM RATINGS
Symbol
V
IN
V
SW
V
SHUT
V
FB
V
OUT
I
SW
,
I
OUT
,
I
GND
T
STG
R
θJA
T
A, MAX
T
L
ESD
Parameter
DC Supply Voltage at Pin 1
SW Voltage – DC
SW Voltage – Pulsed (<100nS)
SHUTB Voltage
FB Voltage
Output Voltage
Switch Current
Storage Temperature Range
Thermal Resistance, Junction-To-Air
Operating Temperature Range (Note 4)
Lead Temperature (Soldering, 10sec)
ESD Capability, HBM model
Value
-0.3V to 6V
-0.3V to 6V
-0.3V to 7V
-0.3V to 6V
-0.3V to 6V
-0.3V to 6V
0 to 1A
-65 to +125
N/A
-40 to +85
260
3.0
Unit
V
V
V
V
V
V
A
°c
°c/w
°c
°c
kV
ELECTRICAL CHARACTERISTICS
Parameter
Min start-up Voltage
Min Operating Voltage
Maximum Input Operating Voltage
Output Voltage Adjust Range
Feedback Voltage
Feedback Input Current
Load Regulation
Quiescent Current (No-switching)
Quiescent Current (Shut-down)
NMOS Switch On Resistance
PMOS Switch On Resistance
NMOS Current Limit
PMOS Turn-Off Current
Current Limit Delay to Output
Minimum Off-Time
Maximum On-Time
Maximum On-Time to Minimum Off-
Time Ratio
T
A
= 25°C. V
IN
= 1.5V, V
OUT
= 3.3V, V
SHUTB
= 1.5V (unless otherwise noted).
Conditions
No load
Note 1
Note 2
Note 3
T
A
= -40°C to 85°C (Note 4)
V
FB
= 1.2V
I
LOAD
= 1mA to 20mA
V
FB
= 1.2V, Measured at VOUT
V
SHUTB
= 0V, V
OUT
= 0V, Including
Switch Leakage
V
OUT
= 3.3V
V
OUT
= 3.3V
Min
Typ
0.8
0.5
4.4
Max
0.95
Unit
V
V
V
V
nA
%
μA
μA
Ω
Ω
mA
mA
nS
μS
μS
2.5
0.95
1.0
1
2.2
35
0.01
0.45
0.6
300
0
100
1.2
5
4
5.0
1.05
1
V
IN
= 0.5V
V
FB
= 0.95V, V
IN
= 0.5V,
T
A
= -40°C to 85°C (Note 4)
Version 1.1
July 6, 2007
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4
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