A4403 ALLEGRO [Allegro MicroSystems], A4403 Datasheet - Page 2

• Manufacturer Part Number: A4403
• Description: Valley Current Mode Control Buck Converter
• Manufacturer: ALLEGRO [Allegro MicroSystems]

A4403
Selection Guide
Absolute Maximum Ratings (reference to GND)
Recommended Operating Conditions
Thermal Characteristics
Package Thermal Resistance, Junction to Ambient
Package Thermal Resistance, Junction to Pad
*Additional thermal information available on the Allegro website.
VIN Pin Supply Voltage
LX Pin Switching Node Voltage
ISEN Pin Current Sense Voltage
DIS Pin Disable Voltage
TON Pin On-Time Voltage
Operating Ambient Temperature
Maximum Junction Temperature
Storage Temperature
Supply Voltage
Switching Node
Switching Frequency Range
Operating Ambient Temperature
Junction Temperature
A4403GEU-T
A4403GEUTR-T
Part Number
Characteristic
Characteristic
Characteristic
92 pieces per tube
1500 pieces per 7-in. reel
may require derating at maximum conditions, see application information
Packing
Symbol
Symbol
T
V
V
J
V
V
(max)
T
V
f
V
V
ISEN
TON
T
SW
T
T
DIS
stg
LX
LX
IN
IN
A
A
J
Symbol
Range G
Continuous conduction mode
R
R
θJA
θJP
Valley Current Mode Control Buck Converter
16-contact 4 mm × 4 mm QFN with exposed thermal pad
On 4-layer PCB based on JEDEC standard
On 4-layer PCB based on JEDEC standard
Conditions
Notes
Test Conditions*
Package
Min.
–0.7
0.45
–40
–40
9
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
Typ.
–1.0 to 0.5
–40 to 105
–55 to 150
–0.3 to 50
–0.3 to 50
–0.3 to 7
–
–
–
–
–
–1 to 50
Rating
150
Value
36
2
Max.
105
125
46
46
2
Units
Units
Units
ºC/W
ºC/W
MHz
ºC
ºC
ºC
V
V
V
V
V
ºC
ºC
V
V
2