AME
AME5248A
n
Electrical Specifications (Contd.)
V
IN
=3.6V, EN=V
IN
, T
A
= 25
O
C, unless otherwise noted
Parameter
High-side Switch On-Resistance
Low-side Switch On-Resistance
Switch Current Limit
Symbol
R
DS,ON,HI
R
DS,ON,LO
I
SW,CL
Test Condition
I
SW
=100mA
I
SW
=-100mA
V
IN
=3V, V
OUT
=1.2V
V
EN
=0V, V
SW
=0V or 3.6V,
V
IN
=3.6V
V
FB
=0.5V or V
OUT
=100%
1.2
1
Min
Typ
0.4
0.35
1.25
Max
0.6
0.5
Units
Ω
A
µA
1.5MHz, 600mA
Synchronous Buck Converter
Switch Leakage Current
I
SW,LK
0.01
1
Switch Frequency
f
OSC
1.5
1.8
MHz
Short Circuit Oscillator Frequency
Maximum Duty Cycle
Input Undervoltage Lockout
Input Undervoltage Lockout
Hysteresis
Enable High (Enabled the Device)
Enable Low (Shutdown the Device)
EN Input Current (Enable the Device)
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
f
OSC,SCR
D
MAX
V
UVLO
V
UVLO,HYST
V
EN,HI
V
EN,LO
I
EN
OTP
OTH
V
FB
=0V or V
OUT
=0V
100
V
IN
Rising
2
0.21
%
2.15
0.1
1.4
0.4
0.01
1
µA
o
2.3
V
Shutdown, temperature increasing
Restore, temperature increasing
160
30
C
Note 1:
∆V=I
OUT
x R
DS.ON.HI
8
Rev.A.01
AME [ ANALOG MICROELECTRONICS ]
