A7534
AiT Semiconductor Inc.
DC-DC CONVERTER/BOOST(STEP-UP)
0.9V STARTUP, 1MHZ, 300MA IOUT, LOW IQ, SYNCHRONOUS
BOOST CONVERTER
www.ait-ic.com
ABSOLUTE MAXIMUM RATINGS
SW Voltage
-0.3V~6V
-0.3V~6V
125°C
OUT Voltage
TJ, Max Operating Junction Temperature
SOT-23
SOT-89-3
450mW
Maximum Power Dissipation
500mW
TA, Ambient Temperature
TS, Storage Temperature
Lead Temperature & Time
-40°C~85°C
-55°C~150°C
260°C, 10S
Stress beyond above listed “Absolute Maximum Ratings” may lead permanent damage to the device. These are stress ratings only and
operations of the device at these or any other conditions beyond those indicated in the operational sections of the specifications are not
implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
TA = 25°C
Parameter
Input Voltage Range
Startup Voltage
Conditions
Min.
0.9
Typ.
Max.
5.0
Unit
V
Symbol
VIN
VSTART
VHOLD
VOUT
IOUT = 1mA
0.9
0.5
V
Hold Voltage
IOUT = 50mA
0.7
5.5
V
Output Voltage Range
Output voltage accuracy
Line regulation
1.8
V
IOUT = 0mA
2.0
0.1
1.0
1.0
90
%
IOUT = 50mA
0.2
2.0
1.4
95
%/V
%
Load regulation
IOUT = 0~300mA
Switching Frequency
Max Duty cycle
FSOC
VOUT =0.95VO, No inductor
VOUT =0.95VO, No inductor
0.7
85
MHz
%
Quiescent Current at VOUT
Supply current at VIN
Efficiency
V
OUT =1.05*VO
5.0
8.0
15
μA
IQ
IOUT = 0mA
20
μA
IOUT = 100mA
85
%
PMOS RDSON
RDSON
P
N
ISW =100mA
400
200
600
300
1.0
mohm
mohm
μA
NMOS RDSON
RDSON
ISW =100mA
SW Leakage Current
ISWLK
VOUT =5.2V, VSW=0 or 5.2V
REV1.1
- JAN 2015 RELEASED, JUL 2016 UPDATED -
- 3 -
AITSEMI [ AiT Semiconductor ]
