AME5249A Datasheet, PDF (8/21 Pages) Analog Microelectronics – 1.5MHz, 600mA Synchronous Buck Converter

AME
AME5249A
1.5MHz, 600mA
Synchronous Buck Converter
n Electrical Specifications
V =3.6V, EN=V , T = 25^OC, unless otherwise noted
IN
IN A
Parameter
Input Voltage
Output Voltage Accuracy
(for every fixed output voltage)
Output Voltage Accuracy (Adj)
Adjustable Output Range
Feedback Voltage
Feedback Pin Bias Current
Quiescent Current
Shutdown Current
Reference Voltage Line Regulation
Output Voltage Line Regulation
Output Voltage Load Regulation
High-side Switch On-Resistance
Low-side Switch On-Resistance
Symbol
Test Condition
Min Typ Max Units
V_IN
∆VOUT
∆V_OUT
2.5
V_IN=2.5 to 5.5V, V_OUT=1.0V~1.8V _-3
PWM Mode
V_IN=V_OUT+∆V to 5.5V (Note 1)
-3
V_OUT=2.5V~3.3V, PWM Mode
V_IN=V_OUT+∆V to 5.5V (Note 1)
-3
PWM Mode
5.5 V
3
3
%
3
V_OUT
V_FB
I_FB
I_Q
I_SHDN
∆V_FB
REG_LINE
REG_LOAD
R_DS,ON,HI
R_DS,ON,LO
T_A=25^oC
T_A=-40^oC to +85^oC
V_FB=0.5V or V_OUT=90%,
I_OUT=0A
V_FB=0.62V or V_OUT=103%,
I_OUT=0A
V_EN=0V, V_IN=4.2V
2.5 V_IN 5.5V
2.5 V_IN 5.5V
I_OUT=100mA to 600mA
I_SW=100mA
I_SW=-100mA
V_FB
V_IN-
V
0.2
0.588 0.6 0.612
V
0.585 0.6 0.615
-50
50 nA
300 400
20
35
µA
0.1 1
0.4
%/V
0.4
0.5
%
0.4 0.6
Ω
0.35 0.5
Switch Current Limit
I_SW,CL
V_IN=3V, V_OUT=1.2V
1 1.25
A
Switch Leakage Current
I_SW,LK
V_EN=0V, V_SW=0V or 3.6V,
V_IN=3.6V
0.01 1 µA
Switch Frequency
f_OSC
Short Circuit Oscillator Frequency
f_OSC,SCR
V_FB=0.6V or V_OUT=100%
V_FB=0V or V_OUT=0V
1.2 1.5 1.8
MHz
0.21
Maximum Duty Cycle
D_MAX
100
%
8
Rev.A.01