Preliminary
Electrical Characteristics
Datasheet
LP3205
(VIN = 3.6V, VOUT = 2.5V, VREF = 0.6V, L = 4.7µH, CIN= 4.7µF, COUT= 10µF, TA= 25°C, IMAX = 800mA
unless otherwise specified)
Parameter
Input Voltage Range
Operating Supply Current
Standby Mode Supply
Current
Shutdown Current
Reference Voltage
Adjustable Output Range
Symbol
VIN
I
OUT
=0mA,V
FB
=0.5V or V
OUT
=90%
I
OUT
=0mA,V
FB
=0.62V or V
OUT
=103%
I
SHDN
VREF
VOUT
ΔVOUT
ΔVOUT
Output
Voltage
Accuracy
Fixed
ΔVOUT
ΔVOUT
ΔVOUT
ΔVOUT
ΔVOUT
VFB =
VIN
IOUT =
200mA
IOUT =
200mA
VIN =2.2
to 5.5V
VIN = 2.2 to 5.5V, VOUT = 1.2V 0A <
IOUT < 800mA
VIN = 2.2 to 5.5V, VOUT = 1.5V 0A <
IOUT < 800mA
VIN = 2.2 to 5.5V, VOUT = 1.8V 0A <
IOUT < 800mA
VIN = 2.8 to 5.5V, VOUT = 2.5V 0A <
IOUT < 800mA
VIN = 3.5 to 5.5V, VOUT = 3.3V 0A <
IOUT < 800mA
VIN = VOUT + 0.2V to 5.5V, VIN
≧
3.5V 0A < IOUT < 800mA
VIN = VOUT + 0.4V to 5.5V, VIN
≧
2.2V 0A < IOUT < 800mA
EN = GND,Vin=4.2V
For adjustable output voltage
0.58
VREF
−3
−3
−3
−3
−3
−3
−3
-30
VIN = 3.6V
VIN = 3.6V
0.4
0.35
Test Conditions
Min
2.5
300
22
0.1
0.6
Typ
Max
5.5
400
35
1
0.62
VIN
−
0.2
+3
+3
+3
+3
+3
+3
+3
30
0.58
V
V
%
%
%
%
%
%
%
nA
Ω
Ω
uA
Units
V
Adjustable
FB Input
Current
PMOSFET
RON
NMOSFET
RON
P-Channel
Current Limit
EN
Threshold
EN Leakage
Current
IFB
PRDS(ON)
NRDS(ON)
IP(LM)
VEN
VENL
0.9
0.4
--
1
1.5
1.5
A
V
uA
2
LP3205 – Ver. 1.0 Datasheet
Feb.-2007
Page 4 of 10
POWER [ LOWPOWER SEMICONDUCTOR INC ]
