A4402ELPTR-T Allegro Microsystems Inc, A4402ELPTR-T Datasheet - Page 3

• Manufacturer Part Number: A4402ELPTR-T
• Description: Dual Output Regulator
• Manufacturer: Allegro Microsystems Inc
• Type: Step-Down (Buck)r

Specifications of A4402ELPTR-T

• Topology: Step-Down (Buck) (1), Linear (LDO) (1)
• Function: Any Function
• Number Of Outputs: 2
• Frequency - Switching: 2MHz
• Voltage/current - Output 1: 3.3 ~ 5 V, 1A
• Voltage/current - Output 2: 1.8 ~ 3.3 V, 250mA
• W/led Driver: No
• W/supervisor: No
• W/sequencer: No
• Voltage - Supply: 3.3 V ~ 50 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-TSSOP Exposed Pad, 16-eTSSOP, 16-HTSSOP
• Current - Output: 250mA
• Voltage - Output: 1.8 ~ 3.3 V
• Voltage - Input: 6 ~ 50 V
• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 620-1386 - BOARD EVAL FOR A4402
• Power - Output: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 620-1331-2

A4402
4.7 kΩ
20
V
kΩ
O2
C
0.15 μF
0.33
C
TSET
POR
μF
NPOR
TSET
POR
ENB
WDI
WDI
ENB
Regulator
Internal
Ramp Generator
Watchdog Timer
V
Soft Start
FB2
FAULT
VIN1
Functional Block Diagram
V
V
REG
REF
V
Disable
Switch
REF
TSD
Switch PWM
Control
V
Constant On-Time Buck Converter
V
REF
REG
Charge
Boot
with Integrated Linear Regulator
VIN1
ISEN
GND
GND
VIN2
FB1
VO2
FB2
LX
R4
5.62
10
R3
kΩ
kΩ
V
SW
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
R
0.01
SENSE
0.1
1
μF
μF
33 μH
μF
L1
V
3.3 V
300 mA
31.6
R2
9.76
R
LIN
1
750 kΩ
R
ton
kΩ
kΩ
10
4.7
μF
μF
V
5 V
SW
V
BAT
3