Low Voltage 2MHz Step-Up DC/DC
Converter in SC70JW Package
Electrical Characteristics
1
V
IN
= 1.2V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are T
A
= 25°C.
Symbol
V
IN
V
OUT
I
Q
I
SHDN
R
DS(ON)H
R
DS(ON)L
I
LIMIT
I
PFM
η
ΔV
OUT
/V
OUT
ΔV
OUT
/V
OUT
/ΔV
IN
F
OSC
D
TYMAX
V
TH(L-IN)
V
TH(H-IN)
AAT1265
Description
Minimum Start-Up Voltage
Operating Input Voltage Range
Output Voltage Accuracy
Quiescent Supply Current
(PFM Operation)
2
Shutdown Current
PMOS On-Resistance
NMOS On-Resistance
NMOS Current Limit
PFM Light Load Current Threshold
Efficiency
Load Regulation
Line Regulation
Switching Frequency
Maximum Duty Cycle
Logic Input Low Threshold for EN
Logic Input High Threshold for EN
Conditions
I
LOAD
= 1mA
V
IN
= 0.8V to 2.5V,
PWM Mode
No Load
EN = 0V, V
IN
= 5.5V
T
A
= 25°C
T
A
= 25°C
Min
0.8
V
OUT
-
0.1
Typ
1.0
Max
V
OUT
V
OUT
+
0.1
Units
V
V
µA
µA
mΩ
mΩ
A
mA
%
%
%/V
MHz
%
V
V
40
750
400
1.0
20
82
1.5
0.2
2.0
90
70
1.0
I
OUT
= 50mA, L = 2.2µH
I
LOAD
= 0 to 100mA
V
IN
= 0.8V to 2.5V
T
A
= 25°C
1.8
2.2
0.4
1.0
1. The AAT1265 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured
by design, characterization, and correlation with statistical process controls.
2. I
Q
= I
Q_VOUT
= I
Q_VCC
.
4
1265.2006.06.1.2
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
