202058A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 14, 2012
DATA SHEET
AAT1232
24V, 100mA Step-Up Converter
Absolute Maximum Ratings
1
T
A
= 25°C, unless otherwise noted.
Symbol
V
IN
, V
P
SW
L
IN
, EN/SET, SEL,
FB1, FB2
T
J
T
S
T
LEAD
Description
Input Voltage
Switching Node
Maximum Rating
Operating Temperature Range
Storage Temperature Range
Maximum Soldering Temperature (at leads, 10 sec)
Value
-0.3 to 6.0
28
V
IN
+ 0.3
-40 to 150
-65 to 150
300
Units
V
V
V
°C
°C
°C
Recommended Operating Conditions
Symbol
JA
P
D
Description
Thermal Resistance
Maximum Power Dissipation (T
A
= 25°C)
TDFN34-16
TSOPJW-12
TDFN34-16
TSOPJW-12
Value
44
160
2270
625
Units
°C/W
mW
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.
202058A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 14, 2012
3
DATA SHEET
AAT1232
24V, 100mA Step-Up Converter
Electrical Characteristics
1
T
A
= -40°C to +85°C, unless otherwise noted. Typical values are T
A
= 25°C, V
IN
= 3.6V.
Symbol
Description
Conditions
Min
2.7
V
IN
Rising
Hysteresis
V
IN
Falling
SEL = GND, V
OUT
= 18V, I
OUT
= 0,
R3 = 20k
2
, Switching
SEL = GND, FB2 = 1.5V, Not Switching
EN/SET = GND
2.7V < V
IN
< 5.5V, V
OUT
= 24V
I
OUT
= 0 to 100mA, V
IN
= 2.7V to 5.0V,
SEL = High
I
OUT
= 0 to 100mA, V
IN
= 2.7V to 5.0V,
SEL = Low
I
OUT
= 0 to 100mA, R3 = 20k
3
V
IN
= 2.7V to 5.5V, R3 = 20k
3
Typ
Max
5.5
24
2.7
Units
V
V
V
mV
V
mA
Power Supply
V
IN
Input Voltage Range
V
OUT(MAX)
Maximum Output Voltage
V
UVLO
UVLO Threshold
150
1.8
0.3
40
70
1.0
100
1.236
0.618
I
Q
I
SHDN
I
OUT
FB1
FB2
V
LOADREG
V
LINEREG
/
V
IN
R
DS(ON)L
R
DS(ON)IN
T
SS
Quiescent Current
V
IN
Pin Shutdown Current
Output Current
FB1 Reference Voltage
FB2 Reference Voltage
Load Regulation
Line Regulation
Low Side Switch On Resistance
Input Disconnect Switch On Resistance
Soft-Start Time
μA
μA
mA
V
V
%/mA
%/V
1.164
0.582
1.2
0.6
0.02
0.6
0.08
0.18
ms
°C
°C
A
0.4
V
V
V
V
μs
ns
μs
μs
μs
μA
From Enable to Output Regulation;
V
OUT
= 15V
0.35
140
15
3.0
T
SD
Over-Temperature Shutdown Threshold
T
HYS
Shutdown Hysteresis
I
LIM
N-Channel Current Limit
SEL, EN/SET
SEL Threshold Low
V
SEL(L)
V
SEL(H)
SEL Threshold High
V
EN/SET(L)
Enable Threshold Low
V
EN/SET(H)
Enable Threshold High
T
EN/SET LO
EN/SET Low Time
T
EN/SET HI MIN
Minimum EN/SET High Time
T
EN/SET HI MAX
Maximum EN/SET High Time
T
OFF
EN/SET Off Timeout
T
LAT
EN/SET Latch Timeout
I
EN/SET
EN/SET Input Leakage
V
IN
= 3.6V
V
IN
V
IN
V
IN
V
IN
=
=
=
=
2.7V
5.5V
2.7V
5.5V
1.4
0.4
1.4
0.3
50
75
500
500
1
75
-1
1. The AAT1232 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. Switching input current will vary with R1, R2, R3 resistor values.
3. Some improvement in line and load regulation is possible with smaller resistor values.
京公网安备 11010802033920号
EEWORLD
