A8450KLB Allegro Microsystems Inc, A8450KLB Datasheet - Page 4

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

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: -

A8450
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ELECTRICAL CHARACTERISTICS
Supply Quiescent Current
Regulated Output Voltage
Buck Switch On-Resistance
Buck Switch Current Limit
DC-to-DC Fixed Off-Time
Soft Start Time
Logic Inputs
ENBAT Logic Input Voltage
ENBAT Input Current
ENB Logic Input Voltage
ENB Input Current
Linear Regulator Outputs
V5D Output Voltage
V5A Output Voltage
V33 Output Voltage
V5A to V5D Tracking
V5D Current Limit
V5A Current Limit
Base Drive Output Current
Feedback Voltage
Feedback Input Bias Current
Characteristics
*
I
I
OUTV5DLIM
OUTV5ALIM
V
Symbol
V
V
V
V
R
I
I
OUTV5D
V
V
OUTV5A
OUTV33
ENBAT
DSLIM
I
t
ENBAT
TRACK
V
DSON
t
ENB
I
I
OFF
I
REG
ENB
SS
BD
BB
FB
FB
at T
Automotive Multioutput Voltage Regulator
A
Enabled mode: V
Enabled mode: V
I
Disabled mode: V
I
+ I
Dropout: 6 V ≤ V
T
T
V
V
HIGH input level
LOW input level
HIGH input level, V
HIGH input level, V
LOW input level, V
HIGH input level
LOW input level
HIGH input level, V
LOW input level, V
1 mA ≤ I
1 mA ≤ I
50 mA ≤ I
V
1 V ≤ V
I
OUT
LOAD
OUT
J
J
= –40ºC to 135°C, V
BB
BB
BB
LOADVADJ
= 25°C
= 135°C
= 14 V
= 14 V
> 6.5 V
= 0 mA; V
= 0 mA: V
= 550 mA = I
OUTVADJ
LOADV5D
LOADV5A
LOADV5A
; V
BB
BB
, V
BB
Test Conditions
BB
≤ 200 mA
≤ 200 mA
> 6.5 V
ENBAT
ENBAT
, I
= 6 V
ENBAT
OUTV33
= 14 V
LOADV5D
ENBAT
ENB
ENBAT
ENBAT
ENB
LOADV5D
< 6.5 V
BB
≤ 0.8 V
≥ 2.7 V
or V
or V
and V
= 6 to 45 V, V
= 0.8 V
≤ 4 V
= 45 V
= 14 V
+ I
ENB
ENB
≤ 200mA;
LOADV5A
ENB
= HIGH,
= HIGH,
= LOW
+ I
ENB
LOADV33
= 5 V, unless otherwise noted
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
3.234 3.300 3.366
–400
Min.
5.50
5.00
–0.3
–0.3
1.16
–25
200
200
1.0
2.7
2.7
4.9
4.9
5.0
–1
–1
5
–
–
–
–
–
–
–
–
–
–100
Typ.
4.75
10.0
1.20
415
650
300
300
1.2
5.0
5.0
10
10
–
–
–
–
–
–
–
–
–
6
–
–
–
–
Max.
5.80
5.80
16.0
1.24
500
750
300
100
2.2
0.8
6.5
0.8
5.1
5.1
15
45
70
10
50
10
25
10
15
10
–
–
–
Units
mΩ
mΩ
mV
mA
mA
mA
mA
mA
ms
μA
μA
μA
μA
μA
nA
μA
μs
V
V
A
V
V
V
V
V
V
V
V
4