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| AME5248A Datasheet, PDF (8/20 Pages) Analog Microelectronics – 1.5MHz, 600mA Synchronous Buck Converter | |||
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AME
AME5248A
1.5MHz, 600mA
Synchronous Buck Converter
n Electrical Specifications (Contd.)
VIN=3.6V, EN=VIN, TA = 25OC, unless otherwise noted
Parameter
High-side Switch On-Resistance
Low-side Switch On-Resistance
Symbol
RDS,ON,HI
RDS,ON,LO
Test Condition
ISW=100mA
ISW=-100mA
Switch Current Limit
ISW,CL
VIN=3V, VOUT=1.2V
Min Typ Max Units
0.4 0.6
â¦
0.35 0.5
1 1.25
A
Switch Leakage Current
ISW,LK
VEN=0V, VSW=0V or 3.6V,
VIN=3.6V
0.01 1 µA
Switch Frequency
fOSC
Short Circuit Oscillator Frequency
fOSC,SCR
VFB=0.5V or VOUT=100%
VFB=0V or VOUT=0V
1.2 1.5 1.8
MHz
0.21
Maximum Duty Cycle
DMAX
100
%
Input Undervoltage Lockout
VUVLO
VIN Rising
2 2.15 2.3
Input Undervoltage Lockout
Hysteresis
VUVLO,HYST
0.1
V
Enable High (Enabled the Device)
VEN,HI
1.4
Enable Low (Shutdown the Device)
VEN,LO
0.4
EN Input Current (Enable the Device) IEN
0.01 1 µA
Thermal Shutdown Temperature
OTP Shutdown, temperature increasing
160
oC
Thermal Shutdown Hysteresis
OTH
Restore, temperature increasing
30
Note 1: âV=IOUT x RDS.ON.HI
8
Rev.A.01
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