AAT1130 Datasheet, PDF (4/19 Pages) Advanced Analogic Technologies – 2.5MHz 500mA Step-Down DC/DC Converter

SwitchReg^TM
PRODUCT DATASHEET
AAT1130
2.5MHz 500mA Step-Down DC/DC Converter
Electrical Characteristics¹
V_IN = 3.6V, C_IN = C_OUT = 4.7μF, L = 1μH. T_A = -40°C to 85°C, unless otherwise noted. Typical values are T_A = 25°C.
Symbol
V_IN
V_OUT
V_UVLO
I_Q
I_SHDN
V_{OUT_TOL} (fixed
output version)
V_{FB_ACC}
I_LIM
R_DS(ON)H
R_DS(ON)L
f_ON
t_OFF(MIN)
I_LXLEAK
I_FBLEAK
t_S
f_S
T_SD
T_HYS
V_EN(L)
V_EN(H)
I_EN
Description
Input Voltage
Output Voltage Range
UVLO Threshold
Quiescent Current
Shutdown Current
Output Voltage Tolerance
Feedback Voltage Accuracy
Valley Current Limit
High Side Switch On-Resistance
Low Side Switch On-Resistance
Switch On-Time
Minimum Off-Time
LX Leakage Current
FB Leakage Current
Startup Time
Switching Frequency
Over-Temperature Shutdown
Threshold
Over-Temperature Shutdown
Hysteresis
Enable Threshold Low
Enable Threshold High
Enable Pin Current
Conditions
V_IN rising
Hysteresis
Not Switching
EN = AGND = PGND
V_IN = 2.7V to 5.5V, 0 to 500mA Load
T_A = 25°C, No Load
V_IN = 3.6V, V_OUT = 1.2V
V_IN = 5.5, V_LX = 0 to V_IN
V_FB = 5.5V, V_EN = 0V, Adj Only
From EN Asserted to Output Regulation
V_OUT = 1.2V, 500mA Load
V_IN = V_FB =5.5V
Min
2.7
0.6
-4
0.59
550
1.4
-1.0
Typ
100
60
0.6
650
0.35
0.25
120
75
150
2.5
140
15
Max
5.5
1.8
2.65
90
1.0
4
0.61
1
0.2
0.6
1.0
Units
V
V
V
mV
μA
μA
%
V
mA
Ω
Ω
ns
ns
μA
μA
μs
MHz
°C
°C
V
V
μA
1. The AAT1130 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
1130.2008.08.1.1