PAM2305
1A Step-Down DC-DC Converters
Electrical Characteristic
T
A
=25 °C , V
IN
=3.6V, V
O
=1.8V, C
IN
=10μF, C
O
=10μF,L=4.7μH, unless otherwise noted.
PARAMETER
Input Voltage Range
Regulated Feedback Voltage
Reference Voltage Line Regulation
Regulated Output Voltage Accuary
Peak Inductor Current
Output Voltage Line Regulation
Output Voltage Load Regulation
Quiescent Current
Shutdown Current
Oscillator Frequency
Drain-Source On-State Resistance
SW Leakage Current
High Efficiency
EN Threshold High
EN Threshold Low
EN Leakage Current
Over Temperature Protection
OTP
Hysteresis
SYMBOL
V
IN
V
FB
ΔV
FB
V
O
I
PK
LNR
LDR
I
Q
I
SD
f
OSC
R
DS(O N)
I
LSW
η
V
EH
V
EL
I
EN
OTP
OTH
±0.01
150
30
1.5
0.3
I
O
= 100mA
V
IN
=3V,V
FB
= 0.5V or
V
O
=90%
V
IN
= 2.5V to 5V, I
O
=10mA
I
O
=1mA to 800mA
No load
V
EN
= 0V
V
O
= 100%
V
FB
= 0V or V
O
= 0V
I
DS
=100mA
P MOSFET
N MOSFET
1.2
-3
1.5
0.2
0.5
40
0.1
1.5
500
0.3
0.35
±0.01
96
0.45
0.5
1
0.5
1.5
70
1
1.8
Test Conditions
MIN
2.5
0.588
0.6
0.3
+3
TYP
MAX
5.5
0.612
UNITS
V
V
%/V
%
A
%/V
%
μA
μA
MHz
kHz
Ω
Ω
μA
%
V
V
μA
°C
°C
Power Analog Microelectronics
,
Inc
www.poweranalog.com
09/2008 Rev 1.2
4
PAM [ POWER ANALOG MICOELECTRONICS ]
