cs5211 ON Semiconductor, cs5211 Datasheet - Page 4

• Manufacturer Part Number: cs5211
• Description: Low Voltage Synchronous Buck Controller
• Manufacturer: ON Semiconductor

ELECTRICAL CHARACTERISTICS
C
Error Amplifier
GATE(H) and GATE(L)
Overcurrent Protection
2. Guaranteed by design. Not tested in production.
V
COMP Source Current
COMP SINK Current
Open Loop Gain
Unity Gain Bandwidth
PSRR @ 1.0 kHz
Output Transconductance
Output Impedance
Reference Voltage
COMP Max Voltage
COMP Min Voltage
High Voltage (AC)
Low Voltage (AC)
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 Fault Mode
Transient Response
PWM Comparator Offset
Artificial Ramp
V
V
Minimum Pulse Width
Switching Frequency
Switching Frequency
Switching Frequency
R
GATE(H)
PWM Comparator
Oscillator
FB
FFB
FFB
OSC
Bias Current
Bias Current
Input Range
Voltage
Characteristic
= C
GATE(L)
= 3.3 nF; R
OSC
V
V
V
C = 0.1 mF
−0.1 V < SGND < 0.1 V, COMP = V
V
V
GATE(L),
GATE(H) 0.5 nF < C
GATE(L) or GATE(H) 0.5 nF < C
V
1.0 V < GATE(L) < 9.0 V, 1.0 V < GATE(H) < 9.0 V
V
1.0 V < GATE(L) < 9.0 V, 1.0 V < GATE(H) < 9.0 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 4)
R
R
R
FB
FB
FB
FB
FB
FB
C
C
FFB
OSC
OSC
OSC
= 51 k; C
= BST = 10 V, Measure:
= BST = 10 V, Measure:
= 0 V
= 0.8 V
= 1.2 V
= 0.8 V
= 1.2 V
= V
= 0 V
= 18 k
= 51 k
= 115 kW
(−40°C < T
FFB
COMP
= 0 V; Increase COMP until GATE(H) starts switching
CC
CC
CC
, 0 V < IS− < V
= 0.1 mF, unless otherwise specified.) (Note 2)
A
< 85°C; −40°C < T
GATE(H)
FFB
Test Conditions
http://onsemi.com
, 20 mV overdrive
= C
−
−
−
−
CC
−
−
−
GATE(H)
GATE(L)
4
FB
, Measure V
; C
J
< 10 nF
< 125°C; 4.5 V < V
GATE(L)
< 10 nF
FB
to SGND
CC
, V
C
BST − 0.5
V
< 14 V; 7.0 V < BST < 20 V;
0.977
0.425
C
−1.0
−1.0
0.20
1.21
Min
600
240
120
2.5
2.0
15
15
40
40
20
54
40
− 0.5
−
−
−
−
−
−
−
−
−
−
−
−
−
−
0.992
0.475
0.25
1.25
Typ
100
750
300
150
0.1
2.5
3.0
0.1
0.1
0.1
5.0
0.1
30
30
98
50
70
32
40
40
70
70
50
60
70
−
−
−
−
1.007
0.525
Max
0.30
1.29
200
100
200
900
360
180
110
110
115
1.0
0.2
0.5
1.0
1.0
8.0
1.0
1.1
60
60
80
80
66
−
−
−
−
−
−
−
mmho
Unit
kHz
kHz
kHz
kHz
MW
KW
mV
mV
mA
mA
mA
dB
dB
mA
mA
mA
mA
ns
ns
ns
ns
ns
ns
V
V
V
V
V
V
V
V
V