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AME5259A Datasheet(PDF) 8 Page - Analog Microelectronics

Part # AME5259A
Description  1.2A, 1.5MHz Synchronous Step-Down Converter
PDF  21 Pages
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Manufacturer  AME [Analog Microelectronics]
Direct Link  http://www.ame.com.tw/
Logo AME - Analog Microelectronics

AME5259A Datasheet(HTML) 8 Page - Analog Microelectronics

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AME
8
1.2A, 1.5MHz Synchronous
Step-Down Converter
AME5259A
Rev.A.02
n
Electrical Specifications
V
IN=3.6V, VOUT=2.5V, VFB=0.6V, L=2.2µH, CIN=4.7µF, COUT=10µF, TA=25
o
C, I
MAX=1.2A unless otherwise specified.
Parameter
Symbol
Min
Typ
Max Units
Input voltage
VIN
2.5
5.5
V
Output Voltage Accuracy
∆VOUT
-3
3
%
Adjustable Output Range
Vout
VFB
VIN-0.2
V
Feedback Voltage
VFB
0.588
0.6 0.612
V
Feedback Pin Bias Current
IFB
-50
50
nA
Quiescent Current
IQ
0.4
0.5
mA
Shutdown Current
ISHDN
0.1
1
µA
Switch Frequency
fOSC
1.2
1.5
1.8
MHz
High-side Switch On-Resistance
RDS,ON, LHI
0.28
Ω
Low-side Switch On-Resistance
RDS,ON, LO
0.25
Ω
Switch Current Limit
ISW,CL
1.6
A
EN High (Enabled the Device)
VEN,HI
1.5
V
EN Low (Shutdown the Device)
VEN,LO
0.4
V
Input Undervoltage Lockout
VUVLO
1.8
V
Input Undervoltage Lockout
Hysteresis
VUVLO,HYST
0.1
V
Thermal Shutdown Temperature
OTP
160
oC
Maximum Duty Cycle
DMAX
100
%
SW Leakage Current
-1
1
µA
VEN=GND
ISW=200mA, VIN=3.6V
VIN=2.5 to 5.5V
VIN=2.5 to 5.5V
VIN=2.5 to 5.5V
rising edge
Shutdown, temperature increasing
EN=0V, VIN=5.0V
VSW=0V or 5.0V
Test Condition
ISW=200mA, VIN=3.6V
VIN=2.5 to 5.5V, in PWM mode
For Fixed Output Voltage
For Adjustable OutputVoltage
VFB=VIN
IOUT=0mA, VFB=1V



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