LP3204 Datasheet, PDF (4/11 Pages) Lowpower Semiconductor inc – 1.5MHz, 800mA, High Efficiency Synchronous PWM Step-Down DC/DC Convert

LP3204
Electrical Characteristics
(VIN = 3.6V, VOUT = 2.5V, VREF = 0.6V, L = 2.2µH, CIN= 4.7µF, COUT= 10µF, TA= 25°C, IMAX = 650mA unless
otherwise specified)
Parameter
Symbol Test Conditions
Min Typ Max Units
Input Voltage Range
Quiescent Current
Shutdown Current
VIN
IQ
ISHDN
IOUT = 0mA, VFB = VREF + 5%
EN = GND
2.5
6
V
270
370
μA
0.1
1
μA
Reference Voltage
VREF For adjustable output voltage
0.588 0.6
0.612 V
Adjustable Output Range VOUT
Fix
Output
Voltage
Accuracy
Δ
VOUT
Δ
VOUT
Δ
VOUT
Δ
VOUT
Δ
VOUT
Δ
VOUT
Δ
Adjustable
VOUT
VREF
VIN = 2.2 to 5.5V, VOUT = 1.0V 0A < _−3
IOUT < 600mA
VIN = 2.2 to 5.5V, VOUT = 1.2V 0A < _−3
IOUT < 600mA
VIN = 2.2 to 5.5V, VOUT = 1.5V 0A < _−3
IOUT < 600mA
VIN = 2.2 to 5.5V, VOUT = 1.8V 0A < _−3
IOUT < 600mA
VIN = 2.8 to 5.5V, VOUT = 2.5V 0A < _−3
IOUT < 600mA
VIN = 3.5 to 5.5V, VOUT = 3.3V 0A < _−3
IOUT < 600mA
VIN = VOUT + 0.2V to 5.5V, VIN ≧ _−3
3.5V 0A < IOUT < 600mA
VIN = VOUT + 0.4V to 5.5V, VIN ≧ _−3
2.2V 0A < IOUT < 600mA
VIN −
V
0.2
+3
%
+3
%
+3
%
+3
%
+3
%
+3
%
+3
%
+3
%
FB Input
IFB
Current
VFB =
VIN
-30
30
nA
PMOSFET
RON
IOUT =
VIN = 3.6V
PRDS(ON) 200mA
0.16 0.26 Ω
NMOSFET
RON
IOUT =
VIN = 3.6V
NRDS(ON) 200mA
0.19
Ω
P-Channel
VIN =
Current
IP(LM)
2.2 to
1
1.2
1.4
Limit
5.5 V
EN
Threshold
VEN
0.3
1.0
1.5
V
EN Leakage
VENL
Current
uA
--
1
LP3204-datasheet Feb.-2006
4 -4