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參數(shù)資料
| 型號(hào)： | A8450KLB |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | Automotive Multioutput Voltage Regulator |
| 中文描述： | 汽車Multioutput穩(wěn)壓器 |
| 文件頁數(shù)： | 1/15頁 |
| 文件大?。?/td> | 549K |
| 代理商： | A8450KLB |
A8450KLB-DS, Rev. 1
A8450
Automotive Multioutput Voltage Regulator
The A8450 is a multioutput power supply intended for automotive
applications. The A8450 operates from a wide input supply range and
is designed to satisfy the requirements of high ambient temperature
environments.
Four regulated voltage outputs provide multiple options. The 3.3 V
regulator and the 1.2 to 3.3 V adjustable regulator can be used to power
microcontroller or DSP cores, or for I/O, sensing, and A-to-D conver-
sion. Two 5 V outputs, one digital and the other analog, feature output
tracking within 0.5% of each other over the operating temperature
range. In addition, the analog regulator is protected against short-to-
battery conditions. All four regulators feature foldback current limit
protection.
The device can be enabled or disabled using two input pins. The
high voltage input, on the ENBAT pin, allows enable/disable using an
engine ignition or battery switch signal. The logic-level input, on the
ENB pin, allows enable/disable by microcontroller or DSP signals.
When disabled, the A8450 draws less than 10 μA of current. A POR
(power-on-reset) block monitors the supply voltages and provides a
reset signal, with an adjustable delay, for microcontroller or DSP resets.
A separate fault pin signals TSD (thermal shutdown), 5 V analog short-
to-supply, and 5 V analog or digital undervoltage.
The A8450 is supplied in a 24-pin SOIC package (part number
suffix LB) with fused power ground pins for enhanced thermal perfor-
mance. This provides an R
θ
JA
of 35°C/W on a 4-layer board (see chart
on p. 4).
Use the following complete part number when ordering:
Part Number
Package
A8450KLB
24-pin, SOIC
AB SO LUTE MAX MUM RAT NGS
Description
Webbed Leadframe
Load Supply Voltage, V
BB
..................................
45 V
Analog Output, Pin V5A........................
–1 V to 45 V
Logic Input Signal
Pin ENBAT.................................
–0.3 V to 45 V
Pin ENB.....................................
–0.3 V to 6.5 V
Pin LX....................................................
–2 V to V
BB
Operating Temperature Range
Ambient Temperature, T
A
............
–40°C to 135°C
Junction Temperature, T
J(MAX)
.....................
150°C
Storage Temperature, T
S
....................
–55°C to 150°C
FEATURES
6 V to 45 V input range
dc-to-dc buck converter with 5.7 V output
Overcurrent protection with foldback, and undervoltage lockout (UVLO)
Dual 5 V outputs
– Digital 5 V ±2%, 200 mA
– Analog 5 V, 200 mA
– Short-to-supply protection on analog regulator
– Analog to digital regulator output tracking < 0.5%, throughout
operating temperature range
3.3 V linear regulator, with foldback current limit
Adjustable 1.2 V to 3.3 V linear regulator, adjustable foldback current limit
Ignition switch enable; Sleep mode
100% duty cycle operation for low input voltages
Power OK output
–40°C to 135°C ambient operating temperature range
Package LB 24-pin SOIC
Approximate Scale 1:1
3
4
5
6
7
8
2
1
22
21
20
19
18
17
23
24
10
9
11
15
14
13
16
12
VBB
CP2
CP1
VCP
VREG11
GND
GND
ENB
LX
ENBAT
V33
V33BD
CL33
GND
GND
VREG
CPOR
CLADJ
VADJBD
FB
V5D
NFAULT
NPOR
V5A
1.2 V to
3.3 V
Lin Reg
Control
5 V
Dig/Anlg
Lin Reg
5 V Reg
Track
Control
3.3 V
Lin Reg
Control
Charge
Pump
Buck
Converter
Soft
Start
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| A8450KLB-T | 功能描述:IC REG QD BUCK/LINEAR 24-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 + 切換式 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 拓?fù)?降壓（降壓）同步（2），線性（LDO）（1） 功能:任何功能 輸出數(shù):3 頻率 - 開關(guān):300kHz 電壓/電流 - 輸出 1:控制器 電壓/電流 - 輸出 2:控制器 電壓/電流 - 輸出 3:控制器 帶 LED 驅(qū)動(dòng)器:無 帶監(jiān)控器:無 帶序列發(fā)生器:是 電源電壓:4.5 V ~ 24 V 工作溫度:-40°C ~ 85°C 安裝類型:* 封裝/外殼:28-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:* 包裝:帶卷 (TR) 其它名稱:ISL6402IVZ-TTR |
| A8450KLB-T | 制造商:Allegro MicroSystems 功能描述:Voltage Regulator IC |
| A8450KLBTR | 功能描述:IC REG QD BUCK/LINEAR 24-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 + 切換式 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 拓?fù)?降壓（降壓）同步（2），線性（LDO）（1） 功能:任何功能 輸出數(shù):3 頻率 - 開關(guān):300kHz 電壓/電流 - 輸出 1:控制器 電壓/電流 - 輸出 2:控制器 電壓/電流 - 輸出 3:控制器 帶 LED 驅(qū)動(dòng)器:無 帶監(jiān)控器:無 帶序列發(fā)生器:是 電源電壓:4.5 V ~ 24 V 工作溫度:-40°C ~ 85°C 安裝類型:* 封裝/外殼:28-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:* 包裝:帶卷 (TR) 其它名稱:ISL6402IVZ-TTR |
| A8450KLBTR-T | 功能描述:IC REG QD BUCK/LINEAR 24-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 + 切換式 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 拓?fù)?降壓（降壓）同步（3），線性（LDO）（2） 功能:任何功能 輸出數(shù):5 頻率 - 開關(guān):300kHz 電壓/電流 - 輸出 1:控制器 電壓/電流 - 輸出 2:控制器 電壓/電流 - 輸出 3:控制器 帶 LED 驅(qū)動(dòng)器:無 帶監(jiān)控器:無 帶序列發(fā)生器:是 電源電壓:5.6 V ~ 24 V 工作溫度:-40°C ~ 85°C 安裝類型:* 封裝/外殼:* 供應(yīng)商設(shè)備封裝:* 包裝:* |
| A845DSC | 制造商:Pentair Technical Products / Hoffman 功能描述:DSC Box 8.00x4.00x4.75 Gray, 8.00x4.00x3.75, Steel |
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