參數(shù)資料
型號(hào)： NCP5424DG
廠商： ON SEMICONDUCTOR
元件分類： 穩(wěn)壓器
英文描述： Dual Synchronous Buck Controller with Input Current Sharing
中文描述： 1.5 A DUAL SWITCHING CONTROLLER, 750 kHz SWITCHING FREQ-MAX, PDSO16
封裝： LEAD FREE, SOIC-16
文件頁(yè)數(shù)： 5/18頁(yè)
文件大?。?/td> 148K
代理商： NCP5424DG
NCP5424
http://onsemi.com
5
ELECTRICAL CHARACTERISTICS (continued)
(0
°
C < T
A
< 70
°
C; 0
°
C < T
J
< 125
°
C; R
OSC
= 30.9 k, C
COMP1,2
= 0.1 F,
10.8
V < V
CC
< 13.2
V;
10.8
V < BST
< 20
V, C
GATE(H)1,2
=
C
GATE(L)1,2
= 1.0
nF, V
FB+2
= 1.0 V; unless otherwise specified.)
Characteristic
Unit
Max
Typ
Min
Test Conditions
Oscillator
Switching Frequency
R
OSC
= 61.9 k; Measure GATE(H)1; Note 3
112
150
188
kHz
Switching Frequency
R
OSC
= 30.9 k; Measure GATE(H)1
250
300
350
kHz
Switching Frequency
R
OSC
= 15.1 k; Measure GATE(H)1; Note 3
450
600
750
kHz
R
OSC
Voltage
R
OSC
= 30.9 k, Note 3
0.970
1.000
1.030
V
Phase Difference
180
°
Supply Currents
V
CC
Current
COMP1,2 = 0 V (No Switching)
13
17
mA
BST Current
COMP1,2 = 0 V (No Switching)
3.5
6.0
mA
Undervoltage Lockout
Start Threshold
GATE(H) Switching; COMP1,2 charging
7.8
8.6
9.4
V
Stop Threshold
GATE(H) not switching; COMP1,2 discharging
7.0
7.8
8.6
V
Hysteresis
StartStop
0.5
0.8
1.5
V
Hiccup Mode Overcurrent Protection (Controller 1)
OVC Comparator Offset Voltage
0 V < IS+ 1 < 5.5 V, 0 V < IS < 5.5 V
55
70
85
mV
Discharge Threshold
0.20
0.25
0.30
V
IS+ 1 Bias Current
0 V < IS+ 1 < 5.5 V
1.0
0.1
1.0
A
IS Bias Current
0 V < IS < 5.5 V
2.0
0.2
2.0
A
OVC Common Mode Range
0
5.5
V
OVC Latch COMP1 Discharge Current
COMP1 = 1.0 V
2.0
5.0
8.0
A
CycletoCycle Current Limit (Controller 2)
OVC Comparator Offset Voltage
0 V < IS+ 2 < 5.5 V, 0 V < IS < 5.5 V
55
70
85
mV
IS+ 2 Bias Current
0 V < IS+ 2 < 5.5 V
1.0
0.1
1.0
A
OVC Common Mode Range
0
5.5
V
OVC Latch COMP2 Discharge Current
COMP = 1.0 V
0.3
1.2
3.5
mA
3. Guaranteed by design, not 100% tested in production.
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