AAT2512 Datasheet, PDF (4/20 Pages) Advanced Analogic Technologies – Dual 400mA High Frequency Buck Converter

AAT2512
Dual 400mA High Frequency Buck Converter
Electrical Characteristics¹
V_IN = 3.6V; T_A = -40°C to +85°C, unless otherwise noted. Typical values are T_A = 25°C.
Symbol
V_IN
V_OUT
V_OUT
I_Q
I_SHDN
I_{LX_LEAK}
I_FB
I_LIM
R_DS(ON)H
R_DS(ON)L
ΔV_LINE
F_OSC
T_S
T_SD
T_HYS
V_EN(L)
V_EN(H)
I_EN
Description
Conditions
Min Typ Max Units
Input Voltage
2.7
5.5
V
Output Voltage Tolerance
Output Voltage Range
Quiescent Current
I_OUT = 0 to 400mA;
V_IN = 2.7V to 5.5V
Per Channel
-3.0
3.0 %
0.6
V_IN
V
27 70 µA
Shutdown Current
EN1 = EN2 = GND
1.0 µA
LX Leakage Current
Feedback Leakage
P-Channel Current Limit
V_IN = 5.5V, V_LX = 0 to V_IN
V_FB = 1.0V
Both Channels
1.0 µA
0.2 µA
1.2
A
High Side Switch On Resistance
0.45
Ω
Low Side Switch On Resistance
0.40
Ω
Line Regulation
Oscillator Frequency
V_IN = 2.7V to 5.5V
0.2
%
1.4
MHz
Start-Up Time
From Enable to Output Regulation;
Both Channels
150
µs
Over-Temperature Shutdown
Threshold
140
°C
Over-Temperature Shutdown
Hysteresis
15
°C
Enable Threshold Low
0.6
V
Enable Threshold High
1.4
V
Input Low Current
V_IN = V_FB = 5.5V
-1.0
1.0 µA
1. The AAT2512 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured
by design, characterization, and correlation with statistical process controls.
4
2512.2006.06.1.4