参数资料
型号: NCP3121QPBCKGEVB
厂商: ON Semiconductor
文件页数: 5/41页
文件大小: 0K
描述: EVAL BOARD FOR NCP3121QPBCKG
设计资源: NCP3121 EVB BOM
NCP3121QPBCKGEVB Gerber Files
NCP3121QPBCKGEVB Schematic
标准包装: 1
主要目的: DC/DC,步降
输出及类型: 2,非隔离
输出电压: 3.3V,5V
电流 - 输出: 3A,3A
输入电压: 12V
稳压器拓扑结构: 降压
板类型: 完全填充
已供物品:
已用 IC / 零件: NCP3121
其它名称: NCP3121QPBCKGEVBOS
NCP3121
ELECTRICAL CHARACTERISTICS ( ? 40 ° C < T J < 125 ° C, T J = 25 ° C for typical values, V AVIN =12 V, V VIN =12 V, unless otherwise
noted. R T = open k W )
Characteristic
Conditions
Min
Typ
Max
Unit
RECOMMENDED OPERATING CONDITIONS
Input Voltage Range
4.5
13.2
V
SUPPLY CURRENT
Quiescent Supply Current
Shutdown Supply Current
VEN = H, V FB = 1.0 V
No Switching, PG open
V EN = 0 V, PG open
5.0
7.0
100
mA
m A
UNDERVOLTAGE LOCKOUT
UVLO Threshold
UVLO Hysteresis
V IN Rising Edge
V IN Falling Edge
3.9
0.15
4.3
4.1
0.20
4.5
0.25
V
V
SWITCHING REGULATOR
Minimum Duty Cycle
Maximum Duty Cycle
High Side MOSFET R DS(on)
High Side Leakage Current
Comp = 0.6 V
Comp = 2.6 V
I SW = 0.5 A, T J = 25 ° C
V EN = 0V, V SW = 0V
90
250
0
10
%
%
m W
m A
High Side Switch Current Limit Set Point
Current Loop Transient Response
(Note 3)
(Note 4)
3.5
4.15
100
4.8
A
nsec
FB
V FB Feedback Voltage
T J = 25 ° C
T J = ? 40 to 125 ° C,
4.5 V < V IN < 13.2V
0.788
0.784
0.8
?
0.812
0.816
V
OSC
Oscillator Frequency
Standard Oscillator Frequency Range
T J = 25 ° C,
T J = ? 40 to 125 ° C
T J = 25 ° C, T J = ? 40 to 125 ° C
(RT = 52.3 k W )
T J = 25 ° C
180
170
635
200
200
200
750
220
230
865
750
kHz
kHz
kHz
kHz
TRANSCONDUCTANCE ERROR AMPLIFIER (GM)
Transconductance
DC Gain
Unity Gain Bandwidth
Output Sink Current
Output Source Current
(Note 4)
(Note 4)
(Note 4)
V FB = 1.0 V, Vcomp = 1.5 V
V FB = 0.6 V, Vcomp = 1.5 V
0.9
50
80
80
1.0
55
4.0
100
100
1.1
60
mS
dB
MHz
m A
m A
Input Bias Current
Comp Pin Operating Voltage Range
V FB = 0.8 V
(Note 4)
0.6
100
500
2.6
nA
V
SOFT ? START
Soft ? Start Period
Soft ? Start Voltage Range
V FB < 0.8 V, C S = 0.1 m F
0
10
V FB
ms
V
Soft ? Start Current Source
Charging, V SS = 1 V
Discharging, V SS = 1 V
6.0
6.0
8.0
8.0
12
12
m A
m A
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