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參數資料
| 型號： | NCP1508 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | Up to 500 mA, 1 MHz, High Efficiency Synchronous Step−Down DC−DC Converter in DFN Package |
| 文件頁數： | 4/15頁 |
| 文件大?。?/td> | 414K |
| 代理商： | NCP1508 |
NCP1508
http://onsemi.com
4
ELECTRICAL CHARACTERISTICS
(V
in
= 3.6 V, Vo = 1.5 V, T
A
= 25
°
C, Fsyn = 600 kHz 50% Duty Cycle square wave for PWM
mode; T
A
= –30 to 85
°
C for Min/Max values, unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max
Unit
V
CC
Pin
Quiescent Current of SYNC Mode, I
out
= 0 mA
Iq PWM
175
A
Quiescent Current of PWM Mode, I
out
= 0 mA
Iq PWM
185
A
Quiescent Current of Pulsed Mode, I
out
= 0 mA
Iq Pulsed
14
A
Quiescent Current, SHD Low
Iq Off
0.1
1.0
A
Input Voltage Range
V
in
2.5
5.2
V
SYNC Pin
Input Voltage
Vsync
0.3
Vcc + 0.3
V
Frequency Operational Range
Fsync
500
600
1000
kHz
Minimum Synchronization Pulse Width
Dcsync Min
30
%
Maximum Synchronization Pulse Width
Dcsync Max
70
%
SYNC “H” Voltage Threshold
Vsynch
920
1200
mV
SYNC “L” Voltage Threshold
Vsyncl
400
830
mV
SYNC “H” Input Current, Vsync = 3.6 V
Isynch
2.2
A
SYNC “L” Input Current, Vsync = 0 V
Isyncl
0.5
A
Output Level Selection Pins
Input Voltage
Vcb
0.3
Vcc + 0.3
V
CB0, CB1 “H” Voltage Threshold
Vcb h
920
1200
mV
CB0, CB1 “L” Voltage Threshold
Vcb l
400
830
mV
CB0 “H” Input Current, CB = 3.6 V
Icb0 h
2.2
A
CB0 “L” Input Current, CB = 0 V
Icb0 l
0.5
A
CB1 “H” Input Current, CB = 3.6 V
Icb1 h
0.3
1.0
A
CB1 “L” Input Current, CB = 0 V
Icb1 l
2.2
A
Shutdown Pin
Input Voltage
Vshd
0.3
Vcc + 0.3
V
SHD “H” Voltage Threshold
Vshd h
920
1200
mV
SHD “L” Voltage Threshold
Vshd l
400
830
mV
SHD “H” Input Current, SHD = 3.6 V
Ishd h
2.2
A
SHD “L” Input Current, SHD = 0 V
Ishd l
0.5
A
Feedback Pin
Input Voltage
Vfb
0.3
Vcc + 0.3
V
Input Current, Vfb = 1.5 V
Ifb
5.0
7.5
A
SYNC PWM Mode Characteristics
Switching P
FET Current Limit
I
lim
800
mA
Duty Cycle (Note 2)
DC
100
%
Minimum On Time
T
on(min)
75
nsec
R
DS(on)
Switching P
FET and N
FET
R
DS(on)
0.23
Switching P
FET and N
FET Leakage Current
I
leak
0
10
A
Output Overvoltage Threshold
Vo
5.0
%
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相關代理商/技術參數 |
參數描述 |
|---|---|
| NCP1508MNR2 | 功能描述:直流/直流開關轉換器 High Efficiency Buck RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| NCP1508MNR2G | 功能描述:直流/直流開關轉換器 High Efficiency Buck Synchronous DC/DC RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| NCP1509MNR2 | 功能描述:直流/直流開關轉換器 High Efficiency Buck RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| NCP1509MNR2G | 功能描述:直流/直流開關轉換器 High Efficiency Buck Synchronous DC/DC RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| NCP1510AFCT1 | 功能描述:直流/直流開關轉換器 High Efficiency Buck RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
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