AAT2512
Dual 400mA High Frequency Buck Converter
Electrical Characteristics1
VIN = 3.6V; TA = -40°C to +85°C, unless otherwise noted. Typical values are TA = 25°C.
Symbol
Description
Conditions
Min Typ Max Units
VIN
Input Voltage
2.7
-3.0
0.6
5.5
V
I
OUT = 0 to 400mA;
VOUT
Output Voltage Tolerance
3.0
%
VIN = 2.7V to 5.5V
VOUT
IQ
Output Voltage Range
Quiescent Current
VIN
70
V
µA
µA
µA
µA
A
Per Channel
27
ISHDN
Shutdown Current
EN1 = EN2 = GND
VIN = 5.5V, VLX = 0 to VIN
VFB = 1.0V
1.0
1.0
0.2
ILX LEAK
LX Leakage Current
_
IFB
Feedback Leakage
ILIM
P-Channel Current Limit
High Side Switch On Resistance
Low Side Switch On Resistance
Line Regulation
Both Channels
1.2
0.45
0.40
0.2
RDS(ON)H
RDS(ON)L
ΔVLINE
FOSC
Ω
Ω
%
VIN = 2.7V to 5.5V
Oscillator Frequency
1.4
MHz
From Enable to Output Regulation;
Both Channels
TS
Start-Up Time
150
140
15
µs
°C
°C
Over-Temperature Shutdown
Threshold
TSD
THYS
Over-Temperature Shutdown
Hysteresis
VEN(L)
VEN(H)
IEN
Enable Threshold Low
Enable Threshold High
Input Low Current
0.6
1.0
V
V
1.4
VIN = VFB = 5.5V
-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
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
