202061B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. •
March 19, 2013
3
DATA SHEET
AAT1276
Boost Converter with USB Power Switch
Electrical Characteristics
1
V
CC
= V
IN
= 3.6V, V
OUT1
= 5V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= 25°C.
Symbol
V
IN
, V
CC
V
OUTx
V
UVLO
I
Q
Description
Operating Input Voltage Range
Maximum Output Voltage Range
Under-Voltage Lockout
Quiescent Supply Current
Conditions
Min
2.7
Typ
Max
5.0
5.5
2.7
Units
V
V
V
μA
μA
mA
A
V
%
%/mA
%/V
mΩ
mΩ
mΩ
μs
%
MHz
I
SHDN
Shutdown Current
Boost Converter
I
O
Continuous Output Current
I
LIMIT
Input Switch Current Limit
V
FB
FB Pin Regulation
V
OUT
Output Voltage Tolerance
ΔV
OUT
Load Regulation
(V
OUT
*ΔV
IN)
ΔV
OUT
/V
OUT
Line Regulation
R
DS(ON)H
High Side Switch On Resistance
R
DS(ON)L
Low Side Switch On Resistance
R
DS(ON)_IN
Input Disconnect Switch
T
SS
Soft-Start Time
η
F
OSC
Efficiency
Switching Frequency
No Load, Switching
No Load, Not Switching, V
FB
= 1.5V
EN = GND
3V < V
IN
< 5V, V
O
= 5V
No Load, T
A
= 25°C
I
LOAD
= 0 to 500mA, V
IN
= 2.7V to 5V
I
LOAD
= 0 to 500mA
V
IN
= 2.7V to 5V
V
OUT1
= 5V, I
OUT1
= 500mA
V
OUT1
= 5V, I
OUT1
= 500mA
V
OUT1
= 5V, I
OUT1
= 500mA
From Enable to Output Regulation
I
OUT1
= 250mA, L = 2.2μH, V
IN
= 3.6V, V
OUT1
= 5V
T
A
= 25°C, I
OUT1
= 500mA, V
IN
= 3.6V, V
OUT1
= 5V
V
OUT1
= 5V, T
A
= 25°C
R
SET
= 16.9kΩ
R
SET
= 40kΩ
V
OUT1
= 5V
V
OUT1
= 5V, R
L
= 10Ω
V
OUT1
= 5V, R
L
= 10Ω
I
SINK
= 1mA
V
FAULT
= 5V
Rising and Falling Edge
0.591
-3
100
45
90
1.0
500
2.5
0.6
0.005
0.2
200
170
170
300
90
2.0
0.609
3
Load Switch
R
DS(ON)
Current Limit Switch On Resistance
I
LIM
Current Limit
I
LIM(MIN)
Minimum Current Limit
T
RESP
Current Limit Response Time
T
ON
Turn-On Delay Time
T
OFF
Turn-Off Delay Time
V
FLT_LOW
FLT Logic Output Low
FLT Logic Output High Leakage Cur-
I
FLT
rent
Fault Blanking Time
T
BLANK
Control
V
TH-L
EN Threshold Low
V
TH-H
EN Threshold High
I
EN
EN Input Leakage
TJ Thermal Shutdown Threshold
T
J-TH
T
J-HYS
TJ Thermal Shutdown Hysteresis
500
100
0.4
4
10
0.5
4
0.2
625
0.4
1
Ω
mA
mA
μs
ms
μs
V
μA
ms
0.4
V
EN
= 5V, V
IN
= 5V
1.4
-1
140
15
1
V
V
μA
°C
°C
1. The AAT1276 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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