AAT2513
Dual 600mA Step-Down
Converter with Synchronization
1
Electrical Characteristics
VIN = VCC = 3.6V, TA = -40°C to +85°C, unless noted otherwise. Typical values are at TA = 25°C.
Symbol Description
Power Supply
Conditions
Min Typ Max Units
VCC
VIN1, VIN2
,
Input Voltage
2.7
5.5
2.7
V
V
V
CC Rising
UVLO
Under-Voltage Lockout
VCC Falling
VEN1 = VEN2 = VCC, No Load
EN1 = EN2 = GND
2.35
60
IQ
ISHDN
Quiescent Current
Shutdown Current
120
1.0
µA
µA
Each Converter
I
OUT = 0 to 600mA, VIN = 2.9 to 5.5V
VFB
VOUT
Feedback Voltage Tolerance
-3.0
0.6
-3.0
VIN
1.0
%
V
IOUT = 0 to 450mA, VIN = 2.7 to 5.5V
Output Voltage Range
LX Reverse Leakage Current
(Fixed)
ILX_LEAK
VIN Open, VLX = 5.5V, EN = GND
µA
ILX_LEAK
IFB
ILIM
LX Leakage Current
Feedback Leakage
P-Channel Current Limit
High Side Switch On Resistance
Low Side Switch On Resistance
VIN = 5.5V, VLX = 0 to VIN
VFB = 1.0V
Each Converter
1.0
0.2
µA
µA
A
Ω
Ω
1.0
0.45
0.40
RDS(ON)H
RDS(ON)L
ΔVOUT
VOUT/ΔIOUT
ΔVOUT
/
Load Regulation
Line Regulation
ILOAD = 0 to 600 mA
0.002
0.125
%/mA
%/V
/
VIN = 2.7 to 5.5V, ILOAD = 100 mA
No Load, TA = 25°C
VOUT/ΔVIN
Feedback Threshold Voltage
Accuracy
VFB
0.591 0.600 0.609
V
FOSC
TS
Oscillator Frequency
1.7
MHz
µs
From Enable to Output Regulation;
Both Channels
Start-Up Time
150
Logic
TSD
Over-Temperature Shutdown
Threshold
Over-Temperature Shutdown
Hysteresis
EN, MODE/SYNC, PS Logic
Low Threshold
140
°C
°C
V
THYS
VIL
15
0.6
VIH
EN, MODE/SYNC, PS Logic
High Threshold
1.4
V
IEN
IMODE/SYNC
IPS
,
,
Logic Input Current
VIN = VFB = 5.5V
-1.0
1.0
µA
1. The AAT2513 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
2513.2007.04.1.1
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
