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參數(shù)資料
| 型號： | NCP5424DR2G |
| 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 |
| 文件頁數(shù)： | 4/18頁 |
| 文件大小： | 148K |
| 代理商： | NCP5424DR2G |
NCP5424
http://onsemi.com
4
ELECTRICAL CHARACTERISTICS
(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
Test Conditions
Min
Typ
Max
Unit
Error Amplifier
V
FB
Bias Current
V
FBX
= 0 V
0.5
1.6
A
V
FB1(2)
Input Range
Note 2
0
1.1
V
COMP1,2 Source Current
COMP1,2 = 1.2 V to 2.5 V; V
FB1(2)
= 0.8 V
15
30
60
A
COMP1,2 Sink Current
COMP1,2 = 1.2 V; V
FB1(2)
= 1.2 V
15
30
60
A
Reference Voltage 1(2)
COMP1 = V
FB1
; COMP2 = V
FB2
0.980
1.000
1.020
V
COMP1,2 Max Voltage
V
FB1(2)
= 0.8 V
3.0
3.3
V
COMP1,2 Min Voltage
V
FB1(2)
= 1.2 V
0.25
0.35
V
Open Loop Gain
95
dB
Unity Gain Band Width
40
kHz
PSRR @ 1.0 kHz
70
dB
Transconductance
32
mmho
Output Impedance
2.5
M
Input Offset, Error Amp. 2
3.0
0
3.0
mV
Error Amp. 2 Common Mode Range
Note 2
1.75
2.0
V
GATE(H) and GATE(L)
High Voltage (AC)
Measure: V
CC
GATE(L)1,2;
BST GATE(H)1,2; Note 2
0
0.5
V
Low Voltage (AC)
Measure:GATE(L)1,2 or GATE(H)1,2; Note 2
0
0.5
V
Rise Time
1.0 V < GATE(L)1,2 < V
CC
1.0 V
1.0 V < GATE(H)1,2 < BST 1.0 V,
BST
≤
14 V
20
50
ns
Fall Time
V
CC
1.0 > GATE(L)1,2 > 1.0 V
BST 1.0 > GATE(H)1,2 > 1.0 V,
BST
≤
14 V
15
50
ns
GATE(H) to GATE(L) Delay
GATE(H)1,2 < 2.0 V, GATE(L)1,2 > 2.0 V
BST
≤
14 V
20
40
70
ns
GATE(L) to GATE(H) Delay
GATE(L)1,2 < 2.0 V, GATE(H)1,2 > 2.0 V;
BST
≤
14 V
20
40
70
ns
GATE(H)1(2) and GATE(L)1(2)
pulldown.
Resistance to GND
Note 2
50
125
280
k
PWM Comparator
PWM Comparator Offset
V
FB1(2)
= 0 V; Increase COMP1,2 until
GATE(H)1,2 starts switching
0.30
0.40
0.50
V
Artificial Ramp
Duty cycle = 50%, Note 2
60
105
150
mV
Minimum Pulse Width
Note 2
300
ns
2. Guaranteed by design, not 100% tested in production.
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