LP3205F Datasheet, PDF (4/10 Pages) Lowpower Semiconductor inc – 1.5MHz Fixed-Frequency PWM Operation

Electrical Characteristics
Preliminary Datasheet LP3205F
(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
Output
Voltage
Accuracy
Fixed
Symbol
VIN
ISHDN
VREF
VOUT
ΔVOUT
ΔVOUT
ΔVOUT
ΔVOUT
ΔVOUT
ΔVOUT
Adjustable ΔVOUT
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
VFB =
VIN
IOUT =
200mA
IOUT =
200mA
VIN =2.2
to 5.5V
Test Conditions
IOUT=0mA,VFB=0.5V or VOUT=90%
Min
2.5
20
IOUT=0mA,VFB=0.62V or VOUT=103%
EN = GND,Vin=4.2V
For adjustable output voltage
0.588
VREF
VIN = 2.2 to 5.5V, VOUT = 1.2V 0A <
IOUT < 800mA
−3
VIN = 2.2 to 5.5V, VOUT = 1.5V 0A <
IOUT < 800mA
−3
VIN = 2.2 to 5.5V, VOUT = 1.8V 0A <
IOUT < 800mA
−3
VIN = 2.8 to 5.5V, VOUT = 2.5V 0A <
IOUT < 800mA
−3
VIN = 3.5 to 5.5V, VOUT = 3.3V 0A <
IOUT < 800mA
−3
VIN = VOUT + 0.2V to 5.5V, VIN ≧
3.5V 0A < IOUT < 800mA
−3
VIN = VOUT + 0.4V to 5.5V, VIN ≧
2.2V 0A < IOUT < 800mA
−3
-30
VIN = 3.6V
VIN = 3.6V
0.4
--
Typ
22
0.1
0.6
190
175
1.5
2
Max Units
5.5 V
35
uA
1
0.612 V
VIN −
0.2
V
+3
%
+3
%
+3
%
+3
%
+3
%
+3
%
+3
%
30
nA
mΩ
mΩ
A
1.5 V
uA
LP3205F –00 Version. 1.0 Datasheet Feb.-2009
www.lowpowersemi.com
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