A7523
DC-DC CONVERTERBOOST(STEP-UP)
SUPER-SMALL PACKAGE PWM CONTROL
STEP-UP SWITCHING REGULATOR
AiT Semiconductor Inc.
www.ait-ic.com
ELECTRICAL CHARACTERISTICS
TA=25℃ unless otherwise specified
Parameter
Operation start voltage
VDD supply voltage
Shut down current
Symbol
Conditions
IOUT=1mA
Min
2
Typ.
0.8
Max
1.05
6
Unit
V
VST
VDD
VDD pin voltage
CE=0,VIN=4.5V
V
IOFF
0.01
14
1
μA
Switch-off Current
Iswitch-off VIN=6V
25
μA
Continuous Switching Current
No load Current
Iswitch
Ino-load
Vref
VIN=CE=3.3V,VFB=GND
180
250
56
450
mA
μA
VIN=1.5V,VOUT=3.3V
Close Loop VDD=3.3V
VDD=3.3V
Feedback Reference Voltage
Switching Frequency
Maximum Duty
1.225
425
85
1.25
500
95
1.275
575
V
Fs
KHz
%
Dmax
VDD=3.3V
LX on resistance
VDD=3.3V
0.2
1.5
4
1.0
2.0
8.0
8.0
5
Ω
Current Limit Setting
EXT on resistance to VDD
EXT on resistance to GND
Line Regulation
Ilimit
VDD=3.3V
1.0
A
VDD=3.3V
Ω
VDD=3.3V
2.15
0.25
0.5
0.8
50
Ω
ΔVline
VIN=3.5~6V,IL=1mA
VIN=2.5V,IL=1~100mA
VDD=3.3V
mV/V
mV/mA
V
Load Regulation
ΔVload
CE pin Trip level
0.4
1.2
Temperature Stability for VOUT
Thermal Shut down
Hysterises
Ts
Ppm/℃
ΔTsd
10
℃
REV1.1
- DEC 2011 RELEASED, FEB 2015 UPDATED -
- 4 -
AITSEMI [ AiT Semiconductor ]
