参数资料
| 型号： | NCV890231MWTXG |
| 厂商： | ON Semiconductor |
| 文件页数： | 5/15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： | NCV890231MWTXGOSDKR |
NCV890231
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
QUIESCENT CURRENT
Quiescent Current, shutdown
Quiescent Current, enabled
I qSD
I qEN
V IN = 13.2 V, V EN = 0 V, T J = 25 ° C
V IN = 13.2 V
10
3.0
m A
mA
UNDERVOLTAGE LOCKOUT ? VIN (UVLO)
UVLO Start Threshold
UVLO Stop Threshold
UVLO Hysteresis
V UVLSTT
V UVLSTP
V UVLOHY
V IN rising
V IN falling
4.1
3.9
0.1
4.5
4.4
0.2
V
V
V
ENABLE (EN)
Logic Low
Logic High
V ENLO
V ENHI
0.8
2.0
V
V
Input Current
I EN
8.0
30
m A
SOFT ? START (SS)
Soft ? Start Completion Time
t SS
0.8
1.4
2.0
ms
VOLTAGE REFERENCE
FB Pin Voltage during regulation
V FBR
COMP shorted to FB
0.786
0.8
0.814
V
ERROR AMPLIFIER
FB Bias Current
I FBBIAS
V FB = 0.8 V
0.25
1.0
m A
Transconductance
g m
g m(HV)
V COMP = 1.3 V
4.5 V < V IN < 18 V
20 V < V IN < 28 V
0.6
0.3
1.0
0.5
1.5
0.75
mmho
Output Resistance
R OUT
1.4
M W
COMP Source Current Limit
COMP Sink Current Limit
I SOURCE
I SINK
V FB = 0.63 V, V COMP = 1.3 V
4.5 V < V IN < 18 V
20 V < V IN < 28 V
V FB = 0.97 V, V COMP = 1.3 V
4.5 V < V IN < 18 V
20 V < V IN < 28 V
75
40
75
40
m A
m A
Minimum COMP voltage
V CMPMIN
V FB = 0.97 V
0.2
0.7
V
OSCILLATOR
Frequency
F SW
F SW(HV)
4.5 < V IN < 18 V
20 V < V IN < 28 V
1.8
0.9
2.0
1.0
2.2
1.1
MHz
VIN FREQUENCY FOLDBACK MONITOR
Frequency Foldback Threshold
V IN rising
V IN falling
V FLDUP
V FLDDN
V FB = 0.63 V
18.4
18
20
19.8
V
Frequency Foldback Hysteresis
V FLDHY
0.2
0.3
0.4
V
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
t HSYNCI
V SYNC > max V HSYNC
40
ns
1. Not tested in production. Limits are guaranteed by design.
http://onsemi.com
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