参数资料
型号: NCP3125CRAGEVB
厂商: ON Semiconductor
文件页数: 4/22页
文件大小: 0K
描述: BOARD EVALUATION NCP3125 CERAMIC
设计资源: NCP3125 Schematic
NCP3125CRAGEVB BOM
标准包装: 1
主要目的: DC/DC,步降
输出及类型: 1,非隔离
输出电压: 最低可调至 0.8V
电流 - 输出: 4A
输入电压: 4.5 ~ 13.2 V
稳压器拓扑结构: 降压
频率 - 开关: 350kHz
板类型: 完全填充
已供物品:
已用 IC / 零件: NCP3125
其它名称: NCP3125CRAGEVBOS
NCP3125
Table 3. ELECTRICAL CHARACTERISTICS ( ? 40 ° C < T J < 125 ° C; V IN = 12 V, BST ? VSW = 12 V, BST = 12 V, V SW = 24 V, for
min/max values unless otherwise noted.)
Characteristic
Input Voltage Range
Boost Voltage Range
Conditions
V IN ? GND
VBST ? GND
Min
4.5
4.5
Typ
Max
13.2
26.5
Unit
V
V
SUPPLY CURRENT
Quiescent Supply Current
Shutdown Supply Current
Boost Quiescent Current
VFB = 1.0 V, No Switching, V IN = 13.2 V
VFB = 1.0 V, COMP = 0 V, V IN = 13.2 V
VFB = 1.0 V, No Switching, V IN = 13.2 V
1.0
?
0.1
?
4.0
?
10.0
?
1.0
mA
mA
mA
UNDER VOLTAGE LOCKOUT
V IN UVLO Threshold
V IN UVLO Hysteresis
V IN Rising Edge
?
3.8
?
?
430
4.3
?
V
mV
SWITCHING REGULATOR
VFB Feedback Voltage,
Control Loop in Regulation
Oscillator Frequency
Ramp ? Amplitude Voltage
Minimum Duty Ratio
Maximum Duty Ratio
T J = 0 to 25 ° C, 4.5 V < V CC < 13.2 V
? 40 ° C v T J v 125 ° C, 4.5 v V CC v 13.2 V
T J = 0 to 25 ° C, 4.5 V < V CC < 13.2 V
? 40 ° C v T J v 125 ° C, 4.5 v V CC v 13.2 V
792
784
300
290
0.8
?
70
800
800
350
350
1.1
5.5
75
808
816
400
410
1.4
?
80
mV
kHz
V
%
%
PWM COMPENSATION
Transconductance
3.0
?
5
mS
Open Loop DC Gain
Output Source Current
Output Sink Current
Input Bias Current
C O = 1 nF
V FB < 0.8 V
V FB > 0.8 V
55
60
60
?
70
125
125
0.160
?
200
200
1.0
dB
m A
m A
ENABLE
Enable Threshold
0.3
0.4
0.5
V
SOFT ? START
Delay to Soft ? Start
3
?
15
ms
SS Source Current
Switch Over Threshold
VFB < 0.8 V
VFB = 0.8 V
?
?
10.5
100
?
?
m A
% of Vref
OVER ? CURRENT PROTECTION
OCSET Current Source
OC Switch ? Over Threshold
Fixed OC Threshold
Sourced from ISET pin, before SS
?
?
?
10
700
375
?
?
m A
mV
mV
PWM OUTPUT STAGE
High ? Side Switch On ? Resistance
Low ? Side Switch On ? Resistance
V IN = 12 V (Note 5)
V IN = 5 V (Note 5)
V IN = 12 V (Note 5)
V IN = 5 V (Note 5)
60
80
36
45
75
100
40
50
m W
m W
5. Guaranteed by design.
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