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CS5422GDR16 数据表(PDF) 4 Page - ON Semiconductor

部件名 CS5422GDR16
功能描述  Dual Out?뭥f?뭁hase Synchronous Buck Controller with Current Limit
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制造商  ONSEMI [ON Semiconductor]
网页  http://www.onsemi.com
标志 ONSEMI - ON Semiconductor

CS5422GDR16 数据表(HTML) 4 Page - ON Semiconductor

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CS5422
http://onsemi.com
4
ELECTRICAL CHARACTERISTICS (0°C < TA < 70°C; 0°C < TJ < 125°C; ROSC = 30.9 k, CCOMP1,2 = 0.1 μF,
10.8 V < VCC < 13.2 V; 10.8 V < BST < 20 V, CGATE(H)1,2 = CGATE(L)1,2 = 1.0 nF, unless otherwise specified.)
Characteristic
Test Conditions
Min
Typ
Max
Unit
Error Amplifier
VFB1(2) Bias Current
VFB1(2) = 0 V
0.5
1.6
μA
VFB1(2) Input Range
0
1.1
V
COMP1,2 Source Current
COMP1,2 = 1.2 V to 2.5 V; VFB1(2) = 0.8 V
15
30
60
μA
COMP1,2 Sink Current
COMP1,2 = 1.2 V; VFB1(2) = 1.2 V
15
30
60
μA
Reference Voltage 1(2)
COMP1 = VFB1; COMP2 = VFB2
0.980
1.000
1.020
V
COMP1,2 Max Voltage
VFB1(2) = 0.8 V
3.0
3.3
V
COMP1,2 Min Voltage
VFB1(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
GATE(H) and GATE(L)
High Voltage (AC)
Measure: VCC − 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 < VCC − 1.0 V
1.0 V < GATE(H)1,2 < BST − 1.0 V,
BST ≤ 14 V
20
50
ns
Fall Time
VCC − 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)
pull−down.
Resistance to GND
Note 2
50
125
280
PWM Comparator
Transient Response
COMP1,2 = 1.0 V, VFB1(2) = 0 to 1.2 V
150
300
ns
PWM Comparator Offset
VFFB1(2) = 0 V; Increase COMP1,2 until
GATE(H)1,2 starts switching
0.30
0.45
0.60
V
Artificial Ramp
Duty cycle = 50%, Note 2
40
70
100
mV
Minimum Pulse Width
Note 2
300
ns
Oscillator
Switching Frequency
ROSC = 61.9 k; Measure GATE(H)1; Note 2
112
150
188
kHz
Switching Frequency
ROSC = 30.9 k; Measure GATE(H)1
224
300
376
kHz
Switching Frequency
ROSC = 15.1 k; Measure GATE(H)1; Note 2
450
600
750
kHz
ROSC Voltage
ROSC = 30.9 k, Note 2
0.970
1.000
1.030
V
Phase Difference
180
°
2. Guaranteed by design, not 100% tested in production.


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