www.ams.com/DC-DC_Step-Up/AS1340 Revision 1.20 4 - 17
AS1340
Datasheet - Electrical Characteristics
6 Electrical Characteristics
VCC = EN = 2.7V, TAMB = -40 to +85ºC (unless otherwise specified). Typical values are at TAMB = +25ºC.
Note: All limits are guaranteed. The parameters with min and max values are guaranteed with production tests or SQC (Statistical Quality
Control) methods.
Table 3. Electrical Characteristics
Symbol Parameter Condition Min Typ Max Unit
TAMB Operating Temperature Range -40 +85 °C
V
CC Supply Voltage 2.7 5.5 V
VIN Inductor Input Voltage Range 2.7 50 V
VOUT Output Voltage Range 2.7 50 V
I
CC Quiescent Supply Current VFB = 1.3V, VIN = 5V 30 50 µA
Enable Supply Current EN = GND 0.1 1 µA
V
LNR
V
CC Line Regulation
VOUT = 18V, ILOAD = 1mA, VIN = 5.5V,
VCC = 2.7 to 5.5V
0.3 %/V
V
IN Line Regulation
VOUT = 18V, ILOAD = 1mA,
VCC = 5V, VIN = 2.7 to 5.5V
0.25 %/V
VLDR Load Regulation
VOUT = 18V, VCC = VIN = 5V, ILOAD = 0 to
20mA
0.02 %/mA
Efficiency
L1 = 10µH, VIN = 5.5V, VOUT = 20V, ILOAD =
100mA
88 %
V
FB Feedback Set Point 1.225 1.25 1.275 V
IFB Feedback Input Bias Current VFB = 1.3V 5 100 nA
DC-DC Switches
V
OUT max VIN = 5.5V, ILOAD = 0mA 50 V
ILX(MAX) LX Switch Current Limit VIN = 5.5V, ILOAD > 20mA 1.41 A
R
LX LX On-Resistance VCC = 5.5V, ILX = 100mA 0.6
RP_ON Switch On-Resistance VIN = 5.5V, PMOS 0.2
ILX_LEAK LX Leakage Current VLX = 50V 2
µA
I
P_LEAK Switch Leakage Current VIN = 5.5V, PMOS 0.5
Control Inputs
V
IH
EN Input Threshold 2.7V VCC 5.5V
0.8 x
V
CC
V
V
IL
0.2 x
VCC
IEN EN Input Bias Current VCC = 5.5V, VEN = 0 to 5.5V -1 +1 µA
POK Output
V
OL POK Output Low Voltage POK sinking 1mA 0.01 0.2 V
POK Output High Leakage Current POK = 5.5V 100 500 nA
POK Threshold Rising edge, referenced to V
OUT(NOM) 87 90 93 %
Oscillator
f
CLK Oscillator Frequency 0.85 1 1.15 MHz
Maximum Duty Cycle 85 90 95 %
