AAT1140 Datasheet, PDF (4/19 Pages) Advanced Analogic Technologies – Fast Transient 600mA Step-Down Converter

SwitchReg^TM
PRODUCT DATASHEET
AAT1140
Fast Transient 600mA Step-Down Converter
Electrical Characteristics¹
T_A = -40°C to +85°C, unless otherwise noted. Typical values are T_A = 25°C, V_IN = 3.6V.
Symbol Description
Step-Down Converter
V_IN
Input Voltage
V_UVLO
V_OUT
V_OUT
I_Q
I_SHDN
I_LIM
R_DS(ON)H
R_DS(ON)L
I_LXLEAK
ΔV_Linereg
V_OUT
I_OUT
R_OUT
T_S
F_OSC
T_SD
T_HYS
EN
V_EN(L)
V_EN(H)
I_EN
UVLO Threshold
Output Voltage Tolerance
Output Voltage Range
Quiescent Current
Shutdown Current
P-Channel Current Limit
High Side Switch On Resistance
Low Side Switch On Resistance
LX Leakage Current
Line Regulation
Out Threshold Voltage Accuracy
Out Leakage Current
Out Impedance
Start-Up Time
Oscillator Frequency
Over-Temperature Shutdown Threshold
Over-Temperature Shutdown Hysteresis
Enable Threshold Low
Enable Threshold High
Input Low Current
Conditions
Min Typ Max
V_IN Rising
Hysteresis
V_IN Falling
I_OUT = 0 to 600mA, V_IN = 2.7V to 5.5V
No Load, 0.6V Adjustable Version
EN = AGND = PGND
2.7
1.8
-3.5
0.6
750
V_IN = 5.5V, V_LX = 0 to V_IN, EN = GND
V_IN = 2.7V to 5.5V
0.6V Output, No Load, T_A = 25°C
0.6V Output
588
>0.6V Output
250
From Enable to Output Regulation
T_A = 25°C
1.0
5.5
2.7
160
+3.5
V_IN
35
70
1.0
0.53
0.40
1
0.1
600 612
0.2
150
1.4 2.0
140
15
V_IN = V_OUT = 5.5V
0.6
1.4
-1.0
1.0
Units
V
V
mV
V
%
V
μA
μA
mA
Ω
Ω
μA
%/V
mV
μA
kΩ
μs
MHz
°C
°C
V
V
μA
1. The AAT1140 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured by design, characterization, and correla-
tion with statistical process controls.
4
www.analogictech.com
1140.2007.12.1.1