参数资料
| 型号： | NCV890201MWTXG |
| 厂商： | ON Semiconductor |
| 文件页数： | 6/15页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 2A 10-DFN |
| 标准包装： | 1 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 可调至 0.8V |
| 输入电压： | 4.5 V ~ 36 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 2MHz |
| 电流 - 输出： | 2A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 105°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-VFDFN 裸露焊盘 |
| 包装： | 标准包装 |
| 供应商设备封装： | 10-DFN（3x3） |
| 其它名称： | NCV890201MWTXGOSDKR |
NCV890201
ELECTRICAL CHARACTERISTICS (V IN = 4.5 V to 28 V, V EN = 5 V, V BST = V SW + 3.0 V, C DRV = 0.1 m F, Min/Max values are valid
for the temperature range ? 40 ° C ≤ T J ≤ 150 ° C unless noted otherwise, and are guaranteed by test, design or statistical correlation.)
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
SYNCHRONIZATION
SYNCO Output Pulse Duty Ratio
SYNCO Output Pulse Falltime
SYNCO Output Pulse Risetime
SYNCI Input Resistance to ground
D (SYNC)
t R(SYNC)
t F(SYNC)
R H(SYNC)
C LOAD = 40 pF
C LOAD = 40 pF, 90% to 10%
C LOAD = 40 pF, 10% to 90%
V SYNCI = 5.0 V
40
50
4
4
60
200
%
ns
ns
k
SYNCI Input High Threshold Voltage
SYNCI Input Low Threshold Voltage
V HSYNC
V LSYNC
0.8
2.0
V
V
SYNCI High Pulse Width
SYNCI Low Pulse Width
t HSYNCI
t LSYNCI
V SYNC > max V HSYNC
V SYNC < min V LSYNC
40
40
ns
ns
External Sync Frequency
Master Reassertion Time
F SYNCI
t I(SYNC)
Time from last rising SYNCI edge
to first un ? synchronized turn ? on.
1.8
650
2.5
MHz
ns
SLOPE COMPENSATION
Ramp Slope (Note 1)
(With respect to switch current)
S ramp
S ramp(HV)
4.5 < V IN < 18 V
20 V < V IN < 28 V
0.7
0.25
1.3
0.6
A/ m s
POWER SWITCH
ON Resistance
Leakage current VIN to SW
R DSON
I LKSW
V BST = V SW + 3.0 V
V EN = 0 V, V SW = 0, V IN = 18 V
650
10
m W
m A
Minimum ON Time
t ONMIN
Measured at SW pin
45
70
ns
Minimum OFF Time
t OFFMIN
Measured at SW pin
At F SW = 2 MHz (normal)
At F SW = 500 kHz (max duty cycle)
30
30
50
70
ns
PEAK CURRENT LIMIT
Current Limit Threshold
I LIM
2.2
2.45
2.7
A
SHORT CIRCUIT FREQUENCY FOLDBACK
Lowest Foldback Frequency
Lowest Foldback Frequency ? High V in
Hiccup Mode
F SWAF
F SWAFHV
F SWHIC
V FB = 0 V, 4.5 V < V IN < 18 V
V FB = 0 V, 20 V < V IN < 28 V
V FB = 0 V
400
200
24
500
250
32
600
300
40
kHz
GATE VOLTAGE SUPPLY (DRV pin)
Output Voltage
DRV POR Start Threshold
DRV POR Stop Threshold
V DRV
V DRVSTT
V DRVSTP
3.1
2.7
2.5
3.3
2.9
2.8
3.5
3.05
3.0
V
V
V
DRV Current Limit
I DRVLIM
V DRV = 0 V
16
45
mA
OUTPUT PRECHARGE DETECTOR
Threshold Voltage
V SSEN
20
35
50
mV
THERMAL SHUTDOWN
Activation Temperature (Note 1)
Hysteresis (Note 1)
T SD
T HYS
150
5
190
20
° C
° C
1. Not tested in production. Limits are guaranteed by design.
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| NCV890230PDR2G | 功能描述:直流/直流开关转换器 2 MHZ SWITCHER RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
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