202019B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013
DATA SHEET
AAT2506
1MHz Step-Down Converter/LDO Regulator
Absolute Maximum Ratings
1
Symbol
V
P
, V
LDO
V
LX
V
FB
V
EN
T
J
T
LEAD
Description
Input Voltages to GND
LX to GND
FB to GND
EN to GND
Operating Junction Temperature Range
Maximum Soldering Temperature (at leads, 10 sec)
Value
6.0
-0.3 to V
P
+ 0.3
-0.3 to V
P
+ 0.3
-0.3 to 6.0
-40 to 150
300
Units
V
V
V
V
°C
°C
Thermal Information
Symbol
P
D
JA
Description
Maximum Power Dissipation
Thermal Resistance
2
Value
2
50
Units
W
°C/W
1. Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at conditions other than the operating conditions
specified is not implied. Only one Absolute Maximum Rating should be applied at any one time.
2. Mounted on an FR4 board with exposed paddle connected to ground plane.
202019B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013
3
DATA SHEET
AAT2506
1MHz Step-Down Converter/LDO Regulator
Electrical Characteristics
1
V
IN
= V
LDO
= V
OUT(NOM)
+ 1V for V
OUT
options greater than 1.5V. V
IN
= V
LDO
= 2.5V for V
OUT
≤
1.5V. I
OUT
= 1mA, C
OUT
=
2.2μF, C
IN
= 1μF, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are T
A
= 25°C.
Symbol
LDO
V
OUT
V
IN
V
DO
V
OUT
/
V
OUT
*V
IN
V
OUT(Line)
V
OUT(Load)
I
OUT
I
SC
I
QLDO
I
SHDN
PSRR
T
SD
T
HYS
e
N
T
C
Output Voltage Tolerance
Input Voltage
Dropout Voltage
3, 4
Line Regulation
Dynamic Line Regulation
Dynamic Load Regulation
Output Current
Short-Circuit Current
LDO Quiescent Current
Shutdown Current
Power Supply Rejection Ratio
Over-Temperature Shutdown Threshold
Over-Temperature Shutdown Hysteresis
Output Noise
Output Voltage Temperature Coefficient
I
OUT
= 300mA
V
IN
= V
OUT
+ 1V to 5V
I
OUT
= 300mA, V
IN
= V
OUT
+ 1V to V
OUT
+ 2V,
T
R
/T
F
= 2μs
I
OUT
= 1mA to 300mA, T
R
<5μs
V
OUT
> 1.3V
V
OUT
< 0.4V
V
IN
= 5V, No Load, ENLDO = V
IN
V
IN
= 5V; ENLDO = GND, EN = SGND = PGND
1kHz
I
OUT
= 10mA, C
BYP
= 10nF
10kHz
1MHz
2.5
60
300
600
70
67
47
45
145
12
50
22
125
1.0
I
OUT
= 1mA to 300mA
T
A
= 25°C
T
A
= -40°C to
85°C
-1.5
-2.5
V
OUT
+V
DO2
400
1.5
2.5
5.5
600
0.09
%
V
mV
%/V
mV
mV
mA
mA
μA
μA
dB
°C
°C
μV
RMS
ppm/°C
Description
Conditions
Min
Typ
Max
Units
e
NBW
= 300Hz to 50kHz
1. The AAT2506 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.
2. To calculate the minimum LDO input voltage, use the following equation: V
202019B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013
DATA SHEET
AAT2506
1MHz Step-Down Converter/LDO Regulator
Electrical Characteristics
1
Typical values are T
A
= 25°C, V
IN
= V
CC
= V
p
= 3.6V.
Symbol
Description
Conditions
Min
2.7
V
IN
Rising
Hysteresis
V
IN
Falling
I
OUT
= 0 to 400mA, V
IN
= 2.7V to 5.5V
ENLDO = GND, No Load, 0.6V Adjustable
Model
EN = SGND = PGND, ENLDO = GND
600
0.45
0.40
V
IN
= 5.5V, V
LX
= 0 - V
IN
EN = SGND = PGND
V
IN
= Open, V
LX
= 5.5V, EN = SGND = PGND
V
IN
= 2.7V to 5.5V
0.6V Output, No Load, T
A
= 25°C
0.6V Output
T
A
= 25°C
From Enable to Output Regulation
1.0
1.0
0.5
609
0.2
1.5
100
1.8
-3.5
0.6
25
+3.5
V
IN
50
1.0
Typ
Max
5.5
2.6
Units
V
V
mV
V
%
V
μA
μA
mA
μA
μA
%/V
mV
μA
MHz
μs
°C
°C
V
V
μA
Buck Converter
V
IN
Input Voltage
V
UVLO
V
OUT
V
OUT
I
QBUCK
UVLO Threshold
Output Voltage Tolerance
Output Voltage Range
Step-Down Converter Quiescent Current
I
SHDN
Shutdown Current
I
LIM
P-Channel Current Limit
R
DS(ON)H
High Side Switch On Resistance
Low Side Switch On Resistance
R
DS(ON)L
I
LXLK
LX Leakage Current
I
LXLK, R
LX Reverse Leakage Current (fixed)
V
Linereg
Line Regulation
V
FB
FB Threshold Voltage Accuracy
FB Leakage Current
I
FB
F
OSC
Oscillator Frequency
T
S
Start-Up Time
T
SD
Over-Temperature Shutdown Threshold
T
HYS
Over-Temperature Shutdown Hysteresis
Logic Signals
V
EN(L)
Enable Threshold Low
V
EN(H)
Enable Threshold High
I
EN(H)
Leakage Current
591
0.7
600
1.0
100
140
15
0.6
1.5
1.0
1.0
1. The AAT2506 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured by design, characterization, and correla-
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