参数资料
型号: NCV8843MNR2G
厂商: ON Semiconductor
文件页数: 5/16页
文件大小: 0K
描述: IC REG BUCK 1.5A 18DFN
标准包装: 1
类型: 降压(降压)
输出数: 1
输入电压: 4.5 V ~ 40 V
PWM 型: 混合物
频率 - 开关: 340kHz
电流 - 输出: 1.5A
同步整流器:
工作温度: -40°C ~ 150°C
安装类型: 表面贴装
封装/外壳: 18-VFDFN 裸露焊盘
包装: 剪切带 (CT)
供应商设备封装: 18-DFN(5x6)
其它名称: NCV8843MNR2GOSCT
NCV8843
ELECTRICAL CHARACTERISTICS (continued) ( ? 40 ° C < T J < 150 ° C, 4.5 V< V IN < 40 V; unless otherwise specified.)
Characteristic
Test Conditions
Min
Typ
Max
Unit
General
Quiescent Current
Shutdown Quiescent Current
Boost Operating Current
Minimum Boost Voltage
Startup Voltage
Minimum Output Current
I SW = 0 A
V SHDNB = 0 V, ? 40 ° C < T J < 125 ° C
V BOOST ? V SW = 2.5 V
(Note 6)
?
?
?
?
6.0
?
3.0
?
4.0
1.0
15
?
3.5
7.0
7.5
5.0
40
2.5
4.0
12
mA
m A
mA/A
V
V
mA
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
6. Guaranteed by design, not 100% tested in production.
V IN
SHDNB
SYNC
2.9 V LDO
Voltage
Regulator
Shutdown
Comparator
+
?
  4 m A
Artificial
Ramp
Oscillator
Thermal
Shutdown
BOOST
1.2 V ?
Internal rail
+
S
R
Q
Output
Driver
V SW
+
?
Current
Limit Com-
parator
SHDNB
1.46 V
PWM Com-
parator
I REF
?
0.32 V ?
V FB
1.27 V
+
?
?
+
Error
Amplifier
+
+
Frequency
and Current
Limit Foldback
I FOLDBACK
GND
V C
Figure 2. Block Diagram
http://onsemi.com
5
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