AAT1265
Low Voltage 2MHz Step-Up DC/DC
Converter in SC70JW Package
Electrical Characteristics1
VIN = 1.2V, VOUT = 3.3V, TA = -40°C to +85°C, unless otherwise noted. Typical values are TA = 25°C.
Symbol
Description
Conditions
Min
Typ
Max Units
Minimum Start-Up Voltage
ILOAD = 1mA
1.0
VIN
V
Operating Input Voltage Range
0.8
3.2
VOUT
VIN = 0.8V to 2.5V,
VOUT
IQ
Output Voltage Accuracy
3.3
40
3.4
V
PWM Mode
Quiescent Supply Current
(PFM Operation)2
No Load
70
µA
ISHDN
RDS(ON)H
RDS(ON)L
ILIMIT
Shutdown Current
EN = 0V, VIN = 5.5V
TA = 25°C
1.0
µA
mΩ
mΩ
A
PMOS On-Resistance
NMOS On-Resistance
NMOS Current Limit
PFM Light Load Current Threshold
Efficiency
750
400
1.0
20
TA = 25°C
IPFM
mA
%
η
IOUT = 50mA, L = 2.2µH
ILOAD = 0 to 100mA
VIN = 0.8V to 2.5V
TA = 25°C
82
ΔVOUT/VOUT
ΔVOUT(VOUT*ΔVIN)
FOSC
Load Regulation
1.5
0.2
2.0
90
%
Line Regulation
%/V
MHz
%
Switching Frequency
Maximum Duty Cycle
Logic Input Low Threshold for EN
Logic Input High Threshold for EN
1.8
1.0
2.2
0.4
DTYMAX
VTH(L-IN)
VTH(H-IN)
V
V
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. IQ = IQ_VOUT = IQ_VCC
.
4
1265.2006.05.1.1
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
