參數(shù)資料
型號： NCP1521
廠商： ON SEMICONDUCTOR
元件分類： DC/DC變換器
英文描述： High Efficiency DC-DC Converters
中文描述： 高效率DC - DC轉(zhuǎn)換器
文件頁數(shù)： 4/20頁
文件大?。?/td> 1886K
代理商： NCP1521
Page
Portable Solutions
Buck Converters
Device
Package(s)
Topology
Frequency
Input
Voltage
Output Voltage
Max
Current
Typical
Efficiency
Features
NCP1500
Micro8
PWM/Linear
External Sync
70-60 kHz
.7 - 5. V
1.0 - 1.8 V Selectable
00 mA
91%
Turns into LDO Mode when Sync is Absent
NCP1501
Micro8
PWM/Linear
External Sync
50-1000 kHz
.5 - 5. V
1.0 - 1.8 V Selectable
00 mA
9%
Sync Rec, Turns into LDO Mode when Sync is
Absent
NCP1510A
MicroBump-9
PWM/Pulse
1 MHz or External Sync
50-1000 kHz
.7 - 5. V
1.0 - 1.8 V Selectable
00 mA
95%
Sync Rec, Turns into Pulse Mode to Save Power
when Sync Pin is Low
NCP1519*
Thin SOT--5
PWM/PFM
1.7 Mhz
.7 - 5.5 V
Adj 0.9 - . V by External
Resistors, 1., 1.5, 1.8 V
00 mA
96%
Sync Rec, Ultra-Low 60
m
A I
q
at Light Loads
NCP151
Thin SOT--5,
Thin DFN-6
PWM/PFM
1.5 Mhz
.7 - 5.5 V
Adjustable 0.9 - . V
by External Resistors
600 mA
96%
Sync Rec, Ultra-Low 0
m
A I
q
at Light Loads
NCP15
Thin SOT--5
PWM/PFM
MHz
.7 - 5.5 V
Adjustable 0.9 - . V
by External Resistors
600 mA
9%
Sync Rec, Ultra-Low 60
m
A I
q
at Light Loads
NCP15*
MicroBump-8
PWM/PFM
MHz
.7 - 5.5 V
Adjustable 0.9 - . V
by External Resistors
600 mA
9%
Sync Rec, Ultra-Low 60
m
A I
q
at Light Loads
NCP156
Thin DFN-10
Dual Output
PWM + LDO
MHz
.7 - 5.5 V
PWM 1. V; LDO .8 V
Other Options Available
PWM 00 mA
LDO 150 mA
95%
Sync Rec, Ultra-Thin DFN: 0.55 mm Thickness
NCP159*
Thin SOT--5
PWM/PFM
1.7 Mhz
.7 - 5.5 V
Adj 0.9 - . V by External
Resistors, 1., 1.5, 1.8 V
1 A
96%
Sync Rec, Ultra-Low 60
m
A I
q
at Light Loads
NCP150
Micro8
PWM/PFM
600 kHz or External Sync
Up to 100 kHz
.7 - 5.5 V
.5 - 5.0 V
600 mA
9%
Programmable Soft-Start
NCP1550
SOT--5
PWM/PFM
600 kHz
.5 - 6.0 V
1.8 - . V
000 mA
(Ext Switch)
90%
Enable Pin
High Efficiency DC-DC Converters
Key Features
PWM buck converter operates either as an LDO or in PFM mode when output current
decreases (NCP1500/01/19/1///9), maximizing efficiency at both light and
full loads
High switching frequencies allow use of smaller output filters, capacitors, and inductors,
while maintaining high efficiency
V
out
= 3.3 V
V
in
= 4.2 V
T
A
= 25
o
C
100
90
80
70
60
50
500
600
400
300
200
100
0
I
out
(mA)
E
COUT
10
M
F
CIN
10
M
F
MBRM120
N
L
15
M
H
8
1
SHD
CB0
7
2
SYN
CB1
6
3
VO
LX
GND
5
4
VIN
VIN
GND
2
VIN
1
EN
N
3
LX
5
FB
4
OFF ON
VIN
CIN
COUT
R1
R2
Cff
L
VOUT
Typical Buck Converter
Typical Step-Down Converter
* Planned H06
NCP1521 - Efficiency vs Output Current
相關(guān)PDF資料
PDF描述
NCP1522 High Efficiency DC-DC Converters
NCP1406SNT1 25 V/25 mA PFM Step−Up DC−DC Converter
NCP1406SNT1G 25 V/25 mA PFM Step−Up DC−DC Converter
NCP1410DMR2 250 mA Sync-Rect PFM Step-Up DC-DC Converter with Low-Battery Detector
NCP1410 250 mA Sync-Rect PFM Step-Up DC-DC Converter with Low-Battery Detector
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
NCP1521ASNT1G 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 ANA LED DRIVER RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
NCP1521B 制造商:ON 功能描述:1.5 MHz, 600 mA Step-Down DC-DC Converter
NCP1521BEVB 功能描述:電源管理IC開發(fā)工具 NCP1521B ANA 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
NCP1521BMUTBG 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 STEP DWN DCDC CNVRTR 1.5MHz 600mA RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
NCP1521BSNT1G 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 STEP DWN DCDC CNVRTR 1.5MHz 600mA RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
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