PRODUCT DATASHEET
AAT1218
SwitchReg
TM
Electrical Characteristics
V
IN
= 1.2V, T
A
= 25°C unless otherwise noted.
Symbol
V
IN
V
OUT_RANGE
V
FB
1A, 1.2MHz Synchronous Boost Converter
Description
Minimum Start-Up Voltage
Minimum Start-Up Voltage Loaded
Operating Input Voltage Range
Output Voltage Range
Feedback Voltage
Quiescient Current
Switching, No Load Operation,
Measured from V
OUT
Quiescient Current
Device Disabled (Shut Down)
Switching Frequency
Minimum Operating Duty Cycle
Maximum Operating Duty Cycle
NMOS Current Limit
Soft-Start Time
NMOS Switch Leakage
PMOS Switch Leakage
NMOS Switch On-Resistance
PMOS Switch On-Resistance
Line Regulation
Load Regulation
Line Transient Response
Load Transient Response
Output Ripple
Conditions
I
LOAD
= 1mA
I
LOAD
= 300mA (Resistive)
T
A
= -40°C to +85°C
V
FB
= 1.2V, T
A
= -40°C to +85°C
0.5 < V
IN
< V
OUT
- 0.5V, I
LOAD
= 0mA
0.5 < V
IN
< V
OUT
- 0.5V, V
EN
= 0
Min
Typ
0.85
1.4
Max
1
0.5
5.5
1.236
700
1
1.5
0
Units
V
V
V
V
V
μA
μA
MHz
%
%
A
ms
μA
μA
mΩ
mΩ
%
%
2.5
1.164
1.200
300
0.01
I
Q
F
OSC
DC
I
LIMIT
T
SS
NMOS Leakage
PMOS Leakage
NMOS On-Resistance
PMOS On-Resistance
ΔV
OUT
ΔV
OUT
ΔV
OUT(LINE_TRANSIENT)
ΔV
OUT(LOAD_TRANSIENT)
ΔV
OUT(AC)
EN
V
EN(L)
V
EN(H)
I
EN
0.95
80
2.0
1.2
T
A
= -40°C to +85°C
V
IN
= 3.3V, V
OUT
= 5V, C
OUT
= 10μF
2.5
0.7
0.1
0.1
180
250
0.1
0.5
5.0
5.0
V
IN
= 1.5 - (V
OUT
- 0.5),
I
LOAD
= 0mA to 1000mA
V
IN
= 1.5 - (V
OUT
- 0.5),
I
LOAD
= 0mA to 1000mA
V
IN
= 2.5V - 4.5V,
ΔV
IN
= 1V,
dV
IN
/dt = ±0.2V/μs, C
OUT
= 22μF
I
LOAD
= 50mA to 500mA,
dI
LOAD
/dt = ±0.5A/μs, C
OUT
= 22μF
V
IN
= 1.0 - (V
OUT
-0.5), I
LOAD
= 0mA
to 1000mA, C
OUT
= 22μF, Measured
Bandwidth = 20MHz
-3
-10
3
10
100
% V
OUT
% V
OUT
mVpp
Logic Input Low Threshold for EN
Logic Input High Threshold for EN
Enable Input Low Current
V
OUT
= 3.3V
V
OUT
= 5.0V
V
IN
= V
OUT
= 5.5V
1.0
1.4
-1.0
0.6
V
V
1.0
μA
4
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1218.2008.10.1.1
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