AME5251A Datasheet, PDF (6/19 Pages) Analog Microelectronics – Dual 1A, 1.5MHz Synchronous Step-Down Converter

AME
AME5251A
Dual 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
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_FB
I_FB
I_Q
I_SHDN
f_OSC
R_{DS,ON, LHI}
R_{DS,ON, LO}
I_SW,CL
V_EN,HI
V_EN,LO
V_UVLO
Test Condition
For Adjustable OutputVoltage
V_FB=V_IN
I_OUT=0mA, V_FB=1V
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
Min Typ Max Units
2.5
5.5
V
V_FB
V_IN-0.2 V
0.588 0.6 0.612 V
-50
50 nA
0.4 0.5 mA
0.1 1
µA
1.2 1.5 1.8 MHz
0.28
Ω
0.25
Ω
1.4 1.6
A
1.5
V
0.4 V
1.8
V
V_UVLO,HYST
0.1
V
OTP Shutdown, temperature increasing
160
o_C
D_MAX
100
%
EN=0V, V_IN=5.0V
V_SW=0V or 5.0V
-1
1
µA
Note 1. Spec. for per channel
6
Rev. A.04