AS1302
Datasheet - Electrical Characteristics
6 Electrical Characteristics
VBATT = 2.9V to 5.15V, VOUT = 5V, COUT = CBAT = 2.2µF, CFLY1 = CFLY2 =220nF, TAMB = -40 to +85ºC. Typical values
are at TAMB = +25ºC and VIN = 3.3V, unless otherwise specified.
Table 3. Electrical Characteristics
Symbol
VBATT(on)
VBATT(off)
VBATT
Parameter
Undervoltage Lockout
Undervoltage Lockout
Battery Supply Voltage
Output Voltage Accurracy
Conditions
Min
Typ
2.8
2.5
Max
2.9
Units
Rising VBATT
Falling VBATT
V
V
V
V
2.4
2.9
2.8
5.15
5.15
VOUT
IOUT = 0mA, 15mA
4.85
5.0
2
ΔVO/ΔIO11 Load Regulation in 1:1 Mode
ΔVO/ΔIO23 Load Regulation in 2:3 Mode
VBATT = 5.4V, IOUT = 10~30mA
VBATT = 4.3V, IOUT = 10~30mA
VBATT = 3.3V, IOUT = 10~30mA
1:1 / 2:3 mode, falling VBATT
2:3 / 1:2 mode, falling VBATT
Mode switching voltage hysteresis
3
mV/mA
Load Regulation in 1:2 Mode
ΔVO/ΔIO12
Vtgr11/23
3
5.1
3.6
150
V
Mode Switching Voltage
Vtgr23/12
mV
mA
Load Current1
IOUT
30
VBATT = 3.6V, IOUT = 30mA
VBATT = 3.6V, IOUT = 2mA
mVPP
mVPP
22
40
Vripple
Output Voltage Ripple
Inrush Current2
Iinr
150
150
mA
mA
Ishort
Short-Circuit Current
1:2 mode, VBATT = 2.9V,
IOUT = 30mA
η12
η23
85
85
%
%
Efficiency in Switching Mode
2:3 mode, VBATT = 3.8V,
IOUT = 30mA
IOP12
IOP23
IOP11
IOFF
VBATT = 3.4V (1:2 mode without load)
VBATT = 4.5V (2:3 mode without load)
VBATT = 5.3V (1:1 mode without load)
EN = 0V
240
170
100
0.01
300
230
150
1
Operating Quiescent Current
Shutdown Current
µA
µA
Input Levels
Input High Level
VIH
VIL
1.1
0.0
5.5
0.4
V
V
pin EN
Input Low Level
Timing
VBATT = 3.6V, IOUT = 30mA
VBATT = 3.6V, IOUT = 2mA
0.9
40
1.2
49
1.5
65
1
MHz
kHz
ms
fOSC
Oscillator Frequency
tSTART Startup Time
0.5
Thermal Regulation
TOFF
Temperature rising
Hysteresis
145
10
Temperature Shutdown
ºC
1. The device is tested in a proprietary test mode.
2. The inrush current is limited by the internal soft-start circuitry.
Note: All limits are guaranteed. The parameters with min and max values are guaranteed with production tests or
SQC (Statistical Quality Control) methods.
www.austriamicrosystems.com/DC-DC_Step-Up/AS1302
Revision 1.03
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