AME
AME5258
n
Electrical Specifications
T
A
=25
o
C. V
IN
=3.6V unless otherwise specified.
Parameter
Input Volatge
Feedback Current
Regulated Feedback
Voltage
Reference Voltage
Line Regulation
Symbol
V
I N
I
FB
V
FB
∆V
FB
1.5MHz, 600mA
Synchronous Buck Converter
Test Condition
Min
2.5
Typ
Max
5.5
±30
Units
V
nA
V
%/V
AME5258-BEVADJ
V
IN
=2.5V to 5.5V
V
OUT
=1.2V,
I
OUT
=100mA
V
OUT
=1.8V,
AME5258-BEVADJ
0.5880
0.6
0.04
0.6120
0.4
1.236
1.854
1.164
1.746
AME5258-AEVxxx
2.425
3.201
1.2
1.8
2.5
3.3
0.04
Regulated Output Voltage
∆V
OUT
I
OUT
=100mA
V
OUT
=2.5V,
I
OUT
=100mA
V
OUT
=3.3V,
I
OUT
=100mA
V
2.575
3.399
0.4
%/V
Output Voltage
Line Regulation
REG
LINE
V
IN
=2.5V to 5.5V
V
I N
=3V, V
FB
=0.5V
Duty Cycle < 35%
V
I N
=3V, V
OUT
=90%
Duty Cycle < 35%
AME5258-BEVADJ
0.75
AME5258-AEVxxx
Switch Current Limit
I
CL
1
A
Output Voltage
Load Regulation
Shutdown Current
Quiescent Current
V
LOADREG
I
SD
I
Q
V
EN
=0V, V
I N
=4.2V
V
FB
=0.5V or V
OUT
=90%
V
EN
=V
I N
=4.2V
V
I N
=2.5V & I
OUT
=100mA
1.2
0.5
0.1
300
1.5
210
0.4
0.35
0.6
0.5
±1
1.5
0.3
±1
1
450
1.8
%
µA
MHz
kHz
Ω
Ω
µA
Oscillator Frequency
R
DSON
of P-Channel FET
R
DSON
of N-Channel FET
Switch Leakage Current
EN Input Threshold (High)
EN Input Threshold (Low)
EN Input Current
f
OSC
R
DSON(P)
R
DSON(N)
I
SW
V
EH
V
EL
I
EN
V
F B
=0V or V
OUT
=0V
I
SW
=100mA
I
SW
= -100mA
V
EN
=0V,
V
SW
=0V or 5V,V
I N
=5V
V
µA
Rev.A.05
7
AMETHERM [ AMETHERM CIRCUIT PROTECTION THERMISTORS ]
