CS5212GD14 ONSEMI [ON Semiconductor], CS5212GD14 Datasheet - Page 4

• Manufacturer Part Number: CS5212GD14
• Description: Low Voltage Synchronous Buck Controller
• Manufacturer: ONSEMI [ON Semiconductor]

ELECTRICAL CHARACTERISTICS (continued)
3.1 V < V
wise specified.)
GATE(H) and GATE(L)
Overcurrent Protection
3. GBD.
4. Recommended maximum operating voltage between the three grounds is 200 mV.
Rise Time
Fall Time
GATE(H) to GATE(L) Delay
GATE(L) to GATE(H) Delay
GATE(H)/(L) Pull–Down
OVC Comparator Offset Voltage
IS+ Bias Current
IS– Bias Current
COMP Discharge Threshold
COMP Discharge Current in OVC
PWM Comparator
Transient Response
PWM Comparator Offset
Artificial Ramp
V
V
Minimum Pulse Width
Oscillator
Switching Frequency
Switching Frequency
Switching Frequency
R
General Electrical Specifications
V
BST/V
Start Threshold
Stop Threshold
Hysteresis
Sense Ground Current
FFB
FFB
OSC
CC
Fault Mode
Supply Current
Bias Current
Input Range
Voltage
C
CC
Supply Current
< 3.5 V; 3.1 V < V
Characteristic
C
< 7.0 V; 4.5 V < BST < 20 V; C
V
V
GATE(H) < 2.0 V, GATE(L) > 2.0 V
GATE(L) < 2.0 V, GATE(H) > 2.0 V
Resistance to PGND
0 V < IS+ < V
0 V < IS+ < V
0 V < IS– < V
COMP = 1.0 V
COMP = 0 – 1.5 V, V
V
Duty Cycle = 90%
V
Note 3.
R
R
R
COMP = 0 V (no switching)
COMP = 0 V (no switching)
GATE(H) Switching, COMP Charging
GATE(H) Not Switching, COMP Not Charging
Start–Stop
Note 4.
C
C
FB
FFB
OSC
OSC
OSC
0.7 V < GATE(L) < 6.3 V,
0.7 V < GATE(H) < 6.3 V
0.7 V < GATE(L) < 6.3 V,
0.7 V < GATE(H) < 6.3 V
GATE(H) starts switching
= BST = 7.0 V, Measure:
= BST = 7.0 V, Measure:
= V
= 0 V
= 18 k
= 51 k
= 115 k
FFB
(–40 C < T
= 0 V; Increase COMP until
CC
CC
CC
http://onsemi.com
Test Conditions
, 0 V < IS– < V
GATE(H)
CS5212
FFB
A
–
–
–
< 85 C (CS5212E); 0 C < T
, 20 mV overdrive
4
= C
GATE(L)
CC
= 3.3 nF; R
OSC
A
–1.0
–1.0
0.20
0.35
1.21
< 70 C (CS5212G); –40 C < T
Min
600
240
120
2.0
2.7
2.6
= 51 k; C
40
40
20
54
40
75
–
–
–
–
–
–
–
–
–
COMP
Typ
0.25
0.40
1.25
0.15
100
750
300
150
100
0.1
0.1
5.0
0.1
5.0
2.0
2.8
2.7
40
40
70
70
50
60
70
–
–
= 0.1 F, unless other-
Max
0.30
0.45
1.29
1.00
200
100
200
900
360
180
125
110
110
115
1.0
1.0
8.0
1.0
1.1
8.0
3.0
2.9
2.8
80
80
66
J
< 125 C;
Unit
kHz
kHz
kHz
K
mV
mV
mA
mA
mV
mA
ns
ns
ns
ns
ns
ns
V
V
V
V
V
V
A
A
A
A