AAT2153 Datasheet, PDF (4/17 Pages) Advanced Analogic Technologies – 2.5A Low Noise Step-Down Converter

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PRODUCT DATASHEET
AAT2153
2.5A Low Noise 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
V_UVLO
V_OUT
I_Q
I_SHDN
I_LIM
R_DS(ON)H
R_DS(ON)L
ΔV_LOADREG
ΔV_LINEREG/ΔV_IN
V_FB
I_FB
F_OSC
T_S
EN
T_SD
T_HYS
V_IL
V_IH
I_EN
Description
Input Voltage
Output Voltage Range
UVLO Threshold
Output Voltage Tolerance
Quiescent Current
Shutdown Current
Current Limit
High Side Switch On-Resistance
Low Side Switch On-Resistance
Load Regulation
Line Regulation
Feedback Threshold Voltage Accuracy
(Adjustable Version)
FB Leakage Current
Internal Oscillator Frequency
Start-Up Time
Over-Temperature Shutdown Threshold
Over-Temperature Shutdown Hysteresis
Enable Threshold Low
Enable Threshold High
Enable Leakage Current
Conditions
V_IN Rising
Hysteresis
V_IN Falling
I_OUT = 0A to 2.5A, V_IN = 2.7V to 5.5V
No Load
V_EN = GND
I_LOAD = 0A to 2.5A
V_IN = 2.7V to 5.5V
No Load, T_A = 25°C
V_OUT = 1.0V
From Enable to Output Regulation;
C_FF = 100pF
V_IN = V_EN = 5.5V
Min
2.7
0.6
1.8
-3.0
2.8
Typ
250
42
3.5
0.120
0.085
0.5
0.2
Max
5.5
V_IN
2.7
3.0
90
1.0
Units
V
V
V
mV
V
%
μA
μA
A
Ω
Ω
%
%/V
0.591 0.60 0.609 V
0.2
μA
1.12 1.4 1.68 MHz
150
μs
140
°C
15
°C
1.4
-1.0
0.6
V
V
1.0
μA
1. The AAT2153 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
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2153.2008.09.1.0