A8450KLB Allegro Microsystems Inc, A8450KLB Datasheet - Page 7

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A8450KLB

Manufacturer Part Number
A8450KLB
Description
IC REG MULTI-OUT AUTO 24-SOIC
Manufacturer
Allegro Microsystems Inc
Type
Step-Down (Buck)r
Datasheet

Specifications of A8450KLB

Topology
Step-Down (Buck) (1), Linear (LDO) (4)
Function
Automotive
Number Of Outputs
4
Voltage/current - Output 1
5.7V, 1.2A
Voltage/current - Output 2
5V, 200mA
Voltage/current - Output 3
5V, 200mA
W/led Driver
No
W/supervisor
No
W/sequencer
Yes
Voltage - Supply
6 V ~ 45 V
Operating Temperature
-40°C ~ 135°C
Mounting Type
Surface Mount
Package / Case
24-SOIC (7.5mm Width)
Current - Output
200mA, 550mA
Voltage - Output
3.3V, 5V, 5.7V, Adj
Voltage - Input
6 ~ 45 V
Internal Switch(s)
Yes
Synchronous Rectifier
No
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Power - Output
-
Frequency - Switching
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
A8450KLBTR
Manufacturer:
ALLEGRO/雅丽高
Quantity:
20 000
Part Number:
A8450KLBTR-T
Manufacturer:
ALLEGRO/雅丽高
Quantity:
20 000
A8450
10%
V
V5D Regulator
V5A Regulator
t (50 μs/Div.)
t (50 μs/Div.)
IN
t (0.2 μs/Div.)
= 12 V; I
I
LOAD
t
RISE
LOAD
= 100 mA; T
Load Transients Diagrams
Automotive Multioutput Voltage Regulator
90%
A
= 25°C; ac-coupled; C1, C2, C3 and C4 = 1 μF
*For the adjustable regulator, the transient load response
is improved as the voltage is reduced. This is due to the
ability of the regulator to provide more base drive (V ADJBD )
because of more available voltage. When the adjustable
regulator approaches 3.3 V, its transient load response is
equivalent to the response of the V33 regulator.
For all regulators, load transients can be improved by
increasing the output capacitance (C1, C2, C3, and C4).
In order to keep ESR down it is best to use ceramic type
capacitors. However, large values in ceramic type capacitors
are either not available or very expensive. If larger values are
needed, above 22 μF, electrolytic capacitors with low ESR
ratings can be used. Performance can be improved further
by adding a 1 μF ceramic in parallel with the electrolytic.
Adjustable Regulator, at 1.8 V*
3.3 V Regulator
t (50 μs/Div.)
t (50 μs/Div.)
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
7

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