AME5250A Datasheet, PDF (7/22 Pages) Analog Microelectronics – 1A, 1.5MHz Synchronous Step-Down Converter

AME
AME5250A
1A, 1.5MHz Synchronous
Step-Down Converter
n Electrical Specifications
V_IN=3.6V, V_OUT=2.5V, V_FB=0.6V, L=2.2µH, C_IN=4.7µF, C_OUT=10µF, T_A=25^oC, I_MAX=1A unless otherwise specified.
Parameter
Input voltage
Output Voltage Accuracy
Adjustable Output Range
Feedback Voltage
Feedback Pin Bias Current
Quiescent Current
Shutdown Current
Switch Frequency
High-side Switch On-Resistance
Low-side Switch On-Resistance
Switch Current Limit
EN High (Enabled the Device)
EN Low (Shutdown the Device)
Input Undervoltage Lockout
Input Undervoltage Lockout
Hysteresis
Thermal Shutdown Temperature
Maximum Duty Cycle
SW Leakage Current
Symbol
V_IN
∆V_OUT
V_out
V_FB
I_FB
Test Condition
V_IN=2.5 to 5.5V, in PWM mode
For Fixed Output Voltage
For Adjustable OutputVoltage
V_FB=V_IN
Min Typ Max Units
2.5
5.5
V
-3
3
%
V_FB
V_IN-0.2 V
0.588 0.6 0.612 V
-50
50 nA
I_Q
I_OUT=0mA, V_FB=1V
0.4 0.5 mA
I_SHDN
f_OSC
R_{DS,ON, LHI}
R_{DS,ON, LO}
I_SW,CL
V_EN,HI
V_EN,LO
V_UVLO
V_EN=GND
I_SW=200mA, V_IN=3.6V
I_SW=200mA, V_IN=3.6V
V_IN=2.5 to 5.5V
V_IN=2.5 to 5.5V
V_IN=2.5 to 5.5V
rising edge
0.1 1
1.2 1.5 1.8
0.28
0.25
1.4 1.6
1.5
0.4
1.8
V_UVLO,HYST
0.1
OTP
D_MAX
Shutdown, temperature increasing
160
100
EN=0V, V_IN=5.0V
V_SW=0V or 5.0V
-1
1
µA
MHz
Ω
Ω
A
V
V
V
V
o_C
%
µA
Rev.A.03
7