AAT2786 Datasheet, PDF (4/27 Pages) Advanced Analogic Technologies – 1.5A Step-Down Converter and 150mA LDO

SystemPower^TM
PRODUCT DATASHEET
AAT2786
1.5A Step-Down Converter and 150mA LDO
Electrical Characteristics¹
V_IN=3.6V; T_A = -40^oC to 85^oC unless otherwise noted. Typical values are at T_A = 25^oC.
Symbol Description
Step-Down Converter
V_IN
V_OUT
Input Voltage
Output Voltage Range
V_UVLO
UVLO Threshold
V_OUT
I_Q
I_SHDN
I_LIM
R_DS(ON)H
R_DS(ON)L
I_LXLEAK
ΔV_LOADREG
ΔV_LINEREG/
ΔV_IN
V_FB
Output Voltage Tolerance
Quiescent Current
Shutdown Current
Current Limit
High Side Switch On-Resistance
Low Side Switch On-Resistance
LX 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 Hysteresis
MODE/SYNC
V_MODE/SYNC(L)
V_MODE/SYNC(H)
I_MODE/SYNC
Enable Threshold Low
Enable Threshold High
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 VIN
I_LOAD = 0A to 1.5A
V_IN = 2.4V to 5.5V
No Load, T_A = 25°C
V_OUT = 1.0V
T_A = 25°C
From Enable to Output Regulation
V_IN = V_EN = 5.5V
Min Typ Max Units
2.5
5.5
0.6
VIN
2.5
150
1.7
-3.0
3.0
42
90
1.0
1.8
0.120
0.085
1.0
0.5
0.2
0.591
1.12
0.60
0.60
1.4
150
140
15
0.609
0.2
1.68
3.0
0.6
1.4
1.0
V
V
V
mV
V
%
µA
µA
A
Ω
Ω
µA
%
%/V
V
µA
MHz
µs
°C
°C
V
V
µA
1. The AAT2786 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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2786.2008.04.1.0