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CS5212ED14 Fiches technique(PDF) 4 Page - ON Semiconductor

No de pièce CS5212ED14
Description  Low Voltage Synchronous Buck Controller
Download  13 Pages
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Fabricant  ONSEMI [ON Semiconductor]
Site Internet  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

CS5212ED14 Fiches technique(HTML) 4 Page - ON Semiconductor

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CS5212
http://onsemi.com
4
ELECTRICAL CHARACTERISTICS (−40°C < TA < 85°C (CS5212E); 0°C < TA < 70°C (CS5212G); −40°C < TJ < 125°C; 3.1 V < VCC <
3.5 V; 3.1 V < VC < 7.0 V; 4.5 V < BST < 20 V; CGATE(H) = CGATE(L) = 3.3 nF; ROSC = 51 k; CCOMP = 0.1 mF, unless otherwise specified.)
Characteristic
Unit
Max
Typ
Min
Test Conditions
GATE(H) and GATE(L)
GATE(H) to GATE(L) Delay
GATE(H) < 2.0 V, GATE(L) > 2.0 V
40
70
110
ns
GATE(L) to GATE(H) Delay
GATE(L) < 2.0 V, GATE(H) > 2.0 V
40
70
110
ns
GATE(H)/(L) Pulldown
Resistance to PGND
20
50
115
KW
Overcurrent Protection
OVC Comparator Offset Voltage
0 V < IS+ < VCC, 0 V < IS− < VCC
54
60
66
mV
IS+ Bias Current
0 V < IS+ < VCC
−1.0
0.1
1.0
mA
IS− Bias Current
0 V < IS− < VCC
−1.0
0.1
1.0
mA
COMP Discharge Threshold
0.20
0.25
0.30
V
COMP Discharge Current in OVC
Fault Mode
COMP = 1.0 V
2.0
5.0
8.0
mA
PWM Comparator
Transient Response
COMP = 0 − 1.5 V, VFFB, 20 mV overdrive
100
200
ns
PWM Comparator Offset
VFB = VFFB = 0 V;
Increase COMP until GATE(H) starts switching
0.35
0.40
0.45
V
Artificial Ramp
Duty Cycle = 90%
40
70
100
mV
VFFB Bias Current
VFFB = 0 V
0.1
1.0
mA
VFFB Input Range
(Note 3)
1.1
V
Minimum Pulse Width
200
ns
Oscillator
Switching Frequency
ROSC = 18 k
600
750
900
kHz
Switching Frequency
ROSC = 51 k
240
300
360
kHz
Switching Frequency
ROSC = 115 k
120
150
180
kHz
ROSC Voltage
1.21
1.25
1.29
V
General Electrical Specifications
VCC Supply Current
COMP = 0 V (no switching)
5.0
8.0
mA
BST/VC Supply Current
COMP = 0 V (no switching)
2.0
3.0
mA
Start Threshold
GATE(H) Switching, COMP Charging
2.7
2.8
2.9
V
Stop Threshold
GATE(H) Not Switching, COMP Not Charging
2.6
2.7
2.8
V
Hysteresis
Start−Stop
75
100
125
mV
Sense Ground Current
(Note 4)
0.15
1.00
mA
3. GBD.
4. Recommended maximum operating voltage between the three grounds is 200 mV.


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