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参数资料
| 型号： | LM26480QSQX-CF/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 2.4 A SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, QCC24 |
| 封装： | 4 X 4 MM, 0.80 MM HEIGHT, ROHS COMPLIANT, LLP-24 |
| 文件页数： | 25/30页 |
| 文件大小： | 2455K |
| 代理商： | LM26480QSQX-CF/NOPB |
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Pin Descriptions
LLP Pin
No.
Name
I/O
Type
Description
1
VINLDO12
I
PWR
Analog Power for Internal Functions (VREF, BIAS, I2C, Logic)
2
SYNC
I
G/(D)
Frequency Synchronization pin which allows the user to connect an external clock
signal to synchronize the PMIC internal oscillator. Default OFF and must be
grounded when not used. Part number LM26480SQ-BF has this feature enabled.
Please contact National Semiconductor Sales Office/Distributors for availability of
LM26480SQ-BF.
3
NPOR
O
D
nPOR Power on reset pin for both Buck1 and Buck 2. Open drain logic output
100K pullup resistor. nPOR is pulled to ground when the voltages on these
supplies are not good. See nPOR section for more info.
4
GND_SW1
G
Buck1 NMOS Power Ground
5
SW1
O
PWR
Buck1 switcher output pin
6
VIN1
I
PWR
Power in from either DC source or Battery to Buck1
7
ENSW1
I
D
Enable Pin for Buck1 switcher, a logic HIGH enables Buck1. Pin cannot be left
floating.
8
FB1
I
A
Buck1 input feedback terminal
9
GND_C
G
Non-switching core ground pin
10
AVDD
I
PWR
Analog Power for Buck converters
11
FB2
I
A
Buck2 input feedback terminal
12
ENSW2
I
D
Enable Pin for Buck2 switcher, a logic HIGH enables Buck2. Pin cannot be left
floating.
13
VIN2
I
PWR
Power in from either DC source or Battery to Buck2
14
SW2
O
PWR
Buck2 switcher output pin
15
GND_SW2
G
Buck2 NMOS
16
ENLDO2
I
D
LDO2 enable pin, a logic HIGH enables LDO2. Pin cannot be left floating.
17
ENLDO1
I
D
LDO1 enable pin, a logic HIGH enables LDO1. Pin cannot be left floating.
18
GND_L
G
LDO ground
19
VINLDO1
I
PWR
Power in from either DC source or battery to LDO1
20
LDO1
O
PWR
LDO1 Output
21
FBL1
I
A
LDO1 Feedback Terminal
22
FBL2
I
A
LDO2 Feedback Terminal
23
LDO2
O
PWR
LDO Output
24
VINLDO2
I
PWR
Power in from either DC source or battery to LDO2.
DAP
GND
Connection isn't necessary for electrical performance, but it is recommended for
better thermal dissipation.
A:
Analog Pin
D:
Digital Pin
G:
Ground Pin
PWR:
Power Pin
I
: Input Pin
I/O:
Input/Output Pin
O:
Output Pin
Power Block Operation
Note
Power Block Input
Enabled
Disabled
VINLDO12
VIN+
Always Powered
AVDD
VIN+
Always Powered
VIN1
VIN+
VIN+ or 0V
VIN2
VIN+
VIN+ or 0V
VINLDO1
≤ VIN+
If Enabled, Min VIN is 1.74V
VINLDO2
≤ VIN+
If Enabled, Min VIN is 1.74V
VIN+ is the largest potential voltage on the device.
www.national.com
4
LM26480
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| LM26480QSQ-CF/NOPB | 2.4 A SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, QCC24 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM26480SQ-AA | 制造商:Texas Instruments 功能描述:DC/ DC STEP DOWN, DUAL LINEAR REG, IC |
| LM26480SQ-AA/NOPB | 功能描述:线性稳压器 - 标准 DUAL HI-CRNT STEP- DOWN DC/DC RoHS:否 制造商:STMicroelectronics 输出类型: 极性: 输出电压:1.8 V 输出电流:150 mA 负载调节: 最大输入电压:5.5 V 线路调整率: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-323-5L |
| LM26480SQ-AA/S7002404 | 制造商:Texas Instruments 功能描述: |
| LM26480SQ-AAEV | 功能描述:BOARD EVALUATION LM26480SQ-AA RoHS:否 类别:编程器，开发系统 >> 评估板 - DC/DC 与 AC/DC（离线）SMPS 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:True Shutdown™ 主要目的:DC/DC，步升 输出及类型:1，非隔离 功率 - 输出:- 输出电压:- 电流 - 输出:1A 输入电压:2.5 V ~ 5.5 V 稳压器拓扑结构:升压 频率 - 开关:3MHz 板类型:完全填充 已供物品:板 已用 IC / 零件:MAX8969 |
| LM26480SQ-AAEV/NOPB | 功能描述:电源管理IC开发工具 LM26480SQ-AAEV EVAL BOARD RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
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