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CS51313 Datasheet(PDF) 5 Page - ON Semiconductor

Part No. CS51313
Description  Synchronous CPU Buck Controller Capable of Implementing Multiple Linear Regulators
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

CS51313 Datasheet(HTML) 5 Page - ON Semiconductor

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CS51313
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ELECTRICAL CHARACTERISTICS (continued) (0°C < TA < 70°C; 0°C < TJ < 125°C; 9.0 V < VCC < 14 V;
2.0 V DAC Code (VID4 = VID3 = VID2 = VID1 = 0, VID0 = 1.0) CGATE(H) = CGATE(L) = 3.3 nF, COFF = 390 pF; unless otherwise specified.)
Characteristic
Test Conditions
Min
Typ
Max
Unit
Voltage Identification DAC (continued)
Line Regulation
9.0 V ≤ VCC ≤ 14 V
0.01
%/V
Input Threshold
VID4, VID3, VID2, VID1, VID0
1.0
1.25
2.4
V
Input Pull−Up Resistance
VID4, VID3, VID2, VID1, VID0
25
50
100
Pull−Up Voltage
5.48
5.65
5.82
V
Error Amplifier
VFB Bias Current
0.2 V ≤ VFB ≤ 3.5 V
−7.0
0.1
7.0
μA
COMP Source Current
VCOMP = 1.2 V to 3.6 V, VFB = 1.9 V
15
30
60
μA
COMP Sink Current
VCOMP = 1.2 V, VFB = 2.1 V
30
60
120
μA
Open Loop Gain
CCOMP = 0.1 μF
80
dB
Unity Gain Bandwidth
CCOMP = 0.1 μF
50
kHz
PSRR @ 1.0 kHz
CCOMP = 0.1 μF
70
dB
Transconductance
32
mmho
Output Impedance
0.5
Bandgap Reference Voltage
VREF
IVREF = 10 μA Sourcing, VCC = 12 V
1.211
1.23
1.248
V
GATE(H) and GATE(L)
High Voltage at 100 mA
Measure VCC − GATE(L)/(H)
1.2
2.1
V
Low Voltage at 100 mA
Measure GATE(L)/(H)
1.0
1.5
V
Rise Time
1.6 V < GATE(H)/(L) < (VCC − 2.5 V)
40
80
ns
Fall Time
(VCC − 2.5 V) > GATE(L)/(H) > 1.6 V
40
80
ns
GATE(H) to GATE(L) Delay
GATE(H) < 2.0 V, GATE(L) > 2.0 V, VCC = 12 V
30
65
110
ns
GATE(L) to GATE(H) Delay
GATE(L) < 2.0 V, GATE(H) > 2.0 V, VCC = 12 V
30
65
110
ns
GATE Pull−Down
Resistance to GND. Note 4
20
50
115
Overcurrent Protection
OVC Comparator Offset Voltage
0 V ≤ VOUT ≤ 3.5 V
77
86
101
mV
Discharge Threshold Voltage
0.2
0.25
0.3
V
VOUT Bias Current
0.2 V ≤ VOUT ≤ 3.5 V
−7.0
0.1
7.0
μA
OVC Latch Discharge Current
VCOMP = 1.0 V
100
800
2500
μA
PWM Comparator
PWM Comparator Offset Voltage
0 V ≤ VFB ≤ 3.5 V
0.99
1.1
1.23
V
Transient Response
VFB = 0 to 3.5 V
200
300
ns
COFF
Off−Time
1.0
1.6
2.3
μs
Charge Current
VCOFF = 1.5 V
550
μA
Discharge Current
VCOFF = 1.5 V
25
mA
4. Guaranteed by design, not 100% tested in production.


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