PS1541
ELECTRICAL CHARACTERISTICS
( Vin = 2.5V, TA = +25°C, unless otherwise noted. Typical values are at TA = +25°C.)
Symbol
Vin
Parameter
Test Condition
Min
2.5
Typ
Max
5.5
Units
Operating Input
Voltage
Under Voltage
Lock-out
V
V
UVLO
Vin going Lo.
2.15
2.2
2.4
Vout-max
Iq
Maximum Output
Voltage
Supply Current
(quiescent)
25
V
135
No Switching
(Vin=5V, VFB=
1.25V)
260
μA
Supply Current
Switching FB=0
VEN =0
510
750
1
μA
μA
Ish
Supply Current (shut-
down)
FOSC
DMAX
VFB
Operation Frequency
620
93
1.1
7
KHz
%
Maximum Duty Cycle
Feedback Voltage
1.05
0.95
V
1.15
Feedback Input Bias
Current
VFB=1.25V
nA
RDS(ON)
MOSFET ON
resistance
Current Limit
Enable Threshold
0.8
2.3
Ω
ILIM
VEN
Vin=3
A
V
V
Turn ON
Turn OFF
VEN =0, 5V
0.35
1
IEN
Enable Input Bias
Current
μA
°C
Thermal Shut-down
145
July 2007
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© 2007 Power IC. All Rights Reserved.
5
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