AME5251 Datasheet, PDF (7/19 Pages) Analog Microelectronics – Dual 1A, 1.5MHz Synchronous Step-Down Converter

AME
AME5251
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
Symbol
Test Condition
Min Typ Max Units
Input voltage
Adjustable Output Range
Feedback Voltage
Feedback Pin Bias Current
V_IN
2.5
5.5
V
V_out
V_FB
V_IN-0.2 V
V_FB
For Adjustable OutputVoltage 0.588 0.6 0.612 V
I_FB
V_FB=V_IN
-50
50
nΑ
Quiescent Current
(For Adjustable Output Voltage)
I_Q
I_OUT=0mA, V_FB=1V
20 40
µA
Shutdown Current
I_SHDN
V_EN=GND
0.1 1
Switch Frequency
f_OSC
1.2 1.5 1.8
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
R_{DS,ON, LHI}
R_{DS,ON, LO}
I_SW,CL
V_EN,HI
V_EN,LO
V_UVLO
V_{U VLO, H Y ST}
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
0.28
0.25
1.4 1.6
1.5
0.4
1.8
0.1
Thermal Shutdown Temperature
OTP Shutdown, temperature increasing
160
Maximum Duty Cycle
SW Leakage Current
D_MAX
100
EN=0V, V_IN=5.0V
-1
1
V_SW=0V or 5.0V
µA
MHz
Ω
Ω
A
V
V
V
V
o_C
%
µA
Note 1. Spec. for per channel
Rev.A.05
7