參數(shù)資料
型號： LM26480QSQ-CF/NOPB
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： 2.4 A SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, QCC24
封裝： 4 X 4 MM, 0.80 MM HEIGHT, ROHS COMPLIANT, LLP-24
文件頁數(shù)： 25/30頁
文件大?。?/td> 2455K
代理商： LM26480QSQ-CF/NOPB
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
相關(guān)PDF資料
PDF描述
LM26480SQ-BF/NOPB 2.4 A SWITCHING REGULATOR, 2400 kHz SWITCHING FREQ-MAX, QCC24
LM26480SQX-BF/NOPB 2.4 A SWITCHING REGULATOR, 2400 kHz SWITCHING FREQ-MAX, QCC24
LM2661M/NOPB SWITCHED CAPACITOR CONVERTER, 80 kHz SWITCHING FREQ-MAX, PDSO8
LM2660MMX/NOPB SWITCHED CAPACITOR CONVERTER, 40 kHz SWITCHING FREQ-MAX, PDSO8
LM2661MM/NOPB SWITCHED CAPACITOR CONVERTER, 80 kHz SWITCHING FREQ-MAX, PDSO8
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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LM26480QSQX-AA/NOPB 功能描述:低壓差穩(wěn)壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
LM26480QSQX-CF/NOPB 功能描述:低壓差穩(wěn)壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
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LM26480SQ-AA/NOPB 功能描述:線性穩(wěn)壓器 - 標準 DUAL HI-CRNT STEP- DOWN DC/DC RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-323-5L
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