CS51031
ELECTRICAL CHARACTERISTICS (Specifications apply for 4.5 ≤ VCC ≤ 16 V, 3.0 V ≤ VC ≤ 16 V;
Industrial Grade: −40°C < TA < 85°C; −40°C < TJ < 125°C: Commercial Grade: 0°C < TA < 70°C; 0°C < TJ < 125°C, unless otherwise specified.)
Characteristic
Test Conditions
Min
Typ
Max
Unit
Oscillator
Frequency
Charge Current
Discharge Current
Maximum Duty Cycle
Short Circuit Timer
Charge Current
Fast Discharge Current
Slow Discharge Current
Start Fault Inhibit Time
Valid Fault Time
GATE Inhibit Time
Fault Duty Cycle
VFB = 1.2 V
COSC = 470 pF
1.4 V < VCOSC < 2.0 V
2.7 V > VCOSC > 2.0 V
1 − (tOFF/tON)
VFB = 1.0 V; CS = 0.1 mF; VCOSC = 2.0 V
1.0 V < VCS < 2.0 V
2.55 V > VCS > 2.4 V
2.4 V > VCS > 1.5 V
0 V < VCS < 2.5 V
2.6 V > VCS > 2.4 V
2.4 V > VCS > 1.5 V
−
160
200
−
110
−
660
80.0
83.3
240
kHz
−
mA
−
mA
−
%
175
264
325
mA
40
66
80
mA
4.0
6.0
10
mA
0.70
0.85
1.40
ms
0.2
0.3
0.45
ms
9.0
15
23
ms
2.5
3.1
4.6
%
CS Comparator
Fault Enable CS Voltage
VFB = 1.0 V
−
−
2.5
−
V
Max CS Voltage
Fault Detect Voltage
Fault Inhibit Voltage
Hold Off Release Voltage
Regulator Threshold Voltage Clamp
VFB Comparators
Regulator Threshold Voltage
Fault Threshold Voltage
Threshold Line Regulation
Input Bias Current
Voltage Tracking
VFB = 1.5 V
VCS when GATE goes high
Minimum VCS
VFB = 0 V
VCS = 1.5 V
VCOSC = VCS = 2.0 V
TJ = 25°C (Note 3)
TJ = −40 to 125°C
TJ = 25°C (Note 3)
TJ = −40 to 125°C
4.5 V ≤ VCC ≤ 16 V
VFB = 0 V
(Regulator Threshold − Fault Threshold Voltage)
−
2.6
−
V
−
2.4
−
V
−
1.5
−
V
0.4
0.7
1.0
V
0.725
0.866
1.035
V
1.225
1.250
1.275
V
1.210
1.250
1.290
V
1.12
1.15
1.17
V
1.10
1.15
1.19
V
−
6.0
15
mV
−
1.0
4.0
mA
70
100
120
mV
Input Hysteresis Voltage
−
−
4.0
20
mV
Power Stage
GATE DC Low Saturation Voltage
GATE DC High Saturation Voltage
Rise Time
Fall Time
VCC Monitor
Turn−On Threshold
VCC = VC = 10 V; VFB = 1.2 V
VCOSC = 1.0 V; 200 mA Sink
VCOSC = 2.7 V; 200 mA Source; VC = VGATE
CGATE = 1.0 nF; 1.5 V < VGATE < 9.0 V
CGATE = 1.0 nF; 9.0 V > VGATE > 1.5 V
−
−
1.2
1.5
V
−
1.5
2.1
V
−
25
60
ns
−
25
60
ns
4.200
4.400
4.600
V
Turn−Off Threshold
−
4.085
4.300
4.515
V
Hysteresis
−
65
130
200
mV
Current Drain
ICC
4.5 V < VCC < 16 V, Gate switching
IC
3.0 V < VC < 16 V, Gate non−switching
Shutdown ICC
VCC = 4.0
3. Guaranteed by design, not 100% tested in production.
−
4.5
6.0
mA
−
2.7
4.0
mA
−
500
900
mA
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