AAT1112 Datasheet, PDF (4/19 Pages) Advanced Analogic Technologies – 1.5A, 1.4MHz Step-Down Converter

DATA SHEET
AAT1112
1.5A, 1.4MHz Step-Down 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
Description
Input Voltage
Output Voltage Range
V_UVLO
UVLO Threshold
V_OUT
Output Voltage Tolerance
I_Q
I_SHDN
Quiescent Current
Shutdown Current
I_LIM
R_DS(ON)H
Current Limit
High Side Switch On-Resistance
R_DS(ON)L
I_LXLEAK
Low Side Switch On-Resistance
LX Leakage Current
I_{LXLK, R}
V_LOADREG
V_LINEREG/
V_IN
V_FB
LX Reverse Leakage Current
Load Regulation
Line Regulation
Feedback Threshold Voltage Accuracy
(Adjustable Version)
I_FB
FB Leakage Current
Internal Oscillator Frequency
F_OSC
Synchronous Clock
T_S
Start-Up Time
T_SD
Over-Temperature Shutdown Threshold
T_HYS
Over-Temperature Shutdown Threshold
EN
V_IL
Enable Threshold Low
V_IH
Enable Threshold High
I_EN
Enable Leakage Current
MODE/SYNC
V_MODE/SYNC(L) Enable Threshold Low
V_MODE/SYNC(H) Enable Threshold High
I_MODE/SYNC Enable Leakage Current
Conditions
V_IN Rising
Hysteresis
V_IN Falling
I_OUT = 0A to 1.5A, V_IN = 2.4V to 5.5V
No Load
V_EN = GND
V_IN = 5.5V, V_LX = 0 to V_IN
V_IN Unconnected, V_LX = 5.5V, V_EN = GND
I_LOAD = 0A to 1.5A
V_IN = 2.4V to 5.5V
Min
2.4
0.6
1.8
-3.0
1.8
Typ
250
42
0.120
0.085
0.5
0.2
Max
5.5
V_IN
2.4
3.0
90
1.0
1.0
1.0
No Load, T_A = 25°C
V_OUT = 1.0V
From Enable to Output Regulation
0.591
1.12
0.60
0.60
1.4
150
140
15
0.609
0.2
1.68
3.0
V_IN = V_EN = 5.5V
V_IN = V_EN = 5.5V
0.6
1.4
-1.0
1.0
0.6
1.4
-1.0
1.0
Units
V
V
V
mV
V
%
μA
μA
A


μA
μA
%
%/V
V
μA
MHz
μs
°C
°C
V
V
μA
V
V
μA
1. The AAT1112 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.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
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201972B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 15, 2013