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參數(shù)資料
| 型號： | LP5526 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | DRAM |
| 英文描述： | 4 Mbit Uniform Sector, Serial Flash Memory |
| 中文描述： | 4兆位統(tǒng)一部門，串行閃存 |
| 文件頁數(shù)： | 9/33頁 |
| 文件大小： | 1150K |
| 代理商： | LP5526 |
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Magnetic Boost DC/DC Converter
(Continued)
MAGNETIC BOOST DC/DC CONVERTER ELECTRICAL CHARACTERISTICS
Symbol
I
LOAD
Parameter
Conditions
Min
Typ
Max
Units
Maximum Non-Continuous
Load Current
3.0V
≤
V
IN
≤
3.2V
V
OUT
= 20V
3.2V
<
V
IN
V
OUT
= 20V
3.0V = V
IN
V
OUT
= 20V
3.0V
≤
V
IN
≤
5.5V
V
OUT
= 20V
I
SW
= 0.5A
RT = 82 k
140
mA
150
I
LOAD
Maximum Continuous Load
Current
Output Voltage Accuracy
(FB Pin)
Switch ON Resistance
PWM Mode Switching
Frequency
Frequency Accuracy
100
V
OUT
2.3
-1.7
+2.3
+1.7
0.3
%
RDS
ON
f
PWM
0.15
1.0
MHz
RT = 82 k
7
9
+7
+9
%
t
PULSE
Switch Pulse Minimum
Width
Startup Time
no load
45
ns
t
STARTUP
Boost startup from STANDBY to V
OUT
= 20V, no load
15
ms
I
MAX
Note:
Maximum non-continuous currents rates as short pulses (t
<
1s). Exposure to maximum rating conditions for extended periods may affect device reliability.
SW Pin Current Limit
1500
1850
mA
BOOST STANDBY MODE
User can set the Boost Converter to STANDBY mode by
writing the register bit EN_BOOST low. When EN_BOOST is
written high, the converter starts for 20ms in low current
PWM mode and then goes to normal PWM mode. All LED
outputs are off during the 20ms delay to ensure smooth
startup.
BOOST OUTPUT VOLTAGE CONTROL
User can control the boost output voltage by Boost Output
8-bit register.
Boost Output [7:0]
Register 0DH
Bin
0000 1000
0000 1001
0000 1010
0000 1011
0000 1100
0000 1101
0000 1110
0000 1111
0001 0000
0001 0001
0001 0010
0001 0011
0001 0100
Boost Output
Voltage (typical)
Dec
8
9
10
11
12
13
14
15
16
17
18
19
20
8.0V
9.0V
10.0V
11.0V
12.0V
13.0V
14.0V
15.0V
16.0V
17.0V
18.0V
19.0V
20.0V
If register value is lower than 8, then value of 8 is used
internally.
If register value is higher than 20, then value of 20 is used
internally.
Boost Output Voltage Control
20179778
L
www.national.com
9
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LP5526TL | 4 Mbit Uniform Sector, Serial Flash Memory |
| LP5526TLX | 4 Mbit Uniform Sector, Serial Flash Memory |
| LP5550 | PowerWise Technology Compliant Energy Management Unit |
| LP5550SQ | PowerWise Technology Compliant Energy Management Unit |
| LP5550SQX | PowerWise Technology Compliant Energy Management Unit |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP5526TL | 制造商:Texas Instruments 功能描述:DRIVER FLASH LED 0.15A POWERWISE 制造商:Texas Instruments 功能描述:DRIVER FLASH LED 0.15A, POWERWISE |
| LP5526TL/NOPB | 功能描述:LED照明驅(qū)動器 RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| LP5526TLEV | 功能描述:電源管理IC開發(fā)工具 LP5526TL EVAL BOARD RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| LP5526TLX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Lighting Management Unit with High Voltage Boost Converter with up to 150mA Serial FLASH LED Driver |
| LP5526TLX/NOPB | 功能描述:LED照明驅(qū)動器 RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
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