A7545
DC-DC CONVERTER/BOOST (STEP-UP)
AiT Semiconductor Inc.
www.ait-ic.com
LOW-NOISE 4.5A STEP-UP CURRENT MODE PWM CONVERTER
ABSOLUTE MAXIMUM RATINGS
Input Supply Voltage
-0.3V~+6V
-0.3V~+12V
-0.3V~+6V
SW Voltage
FB, EN Voltages
Operating Temperature Range
Storage Temperature Range
Lead Temperature (Soldering, 10s)
-40°C ~+85°C
-65°C~150°C
+260°C
Stress beyond above listed ꢀAbsolute Maximum Ratingsꢁ 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 CHARACTERISTICSNOTE1
VCC =3.3V, TA = 25°C, Test Circuit of Figure 1, unless otherwise noted.
Parameter
Input Supply Range
Under Voltage Lockout
UVLO Hysteresis
Symbol
Conditions
Min.
2.5
Typ. Max.
Unit
V
VCC
5.5
VUVLO
2.2
0.1
0.2
6.5
0.1
1
V
V
Quiescent Current
ICC
ICC
VFB=0.66V, No switching
VFB=0.55V, Switching
VEN=GND
mA
mA
μA
MHz
%
Average Supply Current
Shutdown Supply Current
Operation Frequency
Frequency Change with Voltage
Maximum Duty Cycle
Reference Voltage
ICC
FOSC
Δf/ΔV
TDUTY
VREF
VCC=2.5V to 5.5V
VCC=2.5V to 5.5V
ILX=2A
5
90
%
0.588
0.96
0.6
0.2
0.612
0.6
V
Line Regulation
%/V
V
Enable Voltage
VEN
VEN
Shutdown Voltage
V
On Resistance of Driver
OCP Current
RDS(ON)
IOCP
0.05
6
Ω
A
With External Resistor:
33k~909k
Adjustable OCP Current
OTP Temperature
IOCP
0.5
4.5
A
TOTP
150
°C
NOTE1: 100% production test at +25°C. Specifications over the temperature range are guaranteed by design and characterization.
REV1.0 - JUN 2014 RELEASED -
- 3 -
AITSEMI [ AiT Semiconductor ]
