CS51021A, CS51022A, CS51023A, CS51024A
ELECTRICAL CHARACTERISTICS (Unless otherwise stated, specifications apply for −40°C < TA < 85°C, −40°C < TJ < 150°C,
3.0 V < VC < 20 V, 8.2 V < VCC < 20 V, RT = 12 kW, CT = 390 pF)
Characteristic
Test Conditions
Min
Typ
Max
Unit
Under Voltage Lockout
START Threshold (CS51021A/2A)
−
7.95
8.25
8.8
V
START Threshold (CS51023A/4A)
−
12.4
13
13.4
V
STOP Threshold
−
7.4
7.7
8.2
V
Hysteresis (CS51021A/2A)
−
0.50
0.75
1.00
V
Hysteresis (CS51023A/4A)
−
4.0
5.0
6.0
V
ICC @ Startup (CS51021A/2A)
ICC @ Startup (CS51023A/4A)
ICC Operating (CS51021A/3A)
ICC Operating (CS51022A/4A)
ICC Operating
Voltage Reference
VCC < UVSTART Threshold
VCC < UVSTART Threshold
−
−
Includes 1.0 nF Load
−
40
75
mA
−
45
75
mA
−
7.0
9.0
mA
−
6.0
8.0
mA
−
7.0
12
mA
Initial Accuracy
Total Accuracy
Line Regulation
Load Regulation
NOISE Voltage
TA = 25°C, IREF = 2.0 mA, VCC = 14 V, (Note 2)
4.95
5.0
1.0 mA < IREF < 10 mA
4.9
5.0
8.2 V < VCC < 18 V, IREF = 2.0 mA
−
6.0
1.0 mA < IREF < 10 mA
−
6.0
(Note 2)
−
50
5.05
V
5.15
V
20
mV
15
mV
−
mV
OP Life Shift
T = 1000 Hours, (Note 2)
−
4.0
20
mV
FAULT Voltage
OK Voltage
OK Hysteresis
Current Limit
Error Amplifier
Force VREF
Force VREF
Force VREF
Force VREF
0.90 × VREF 0.93 × VREF 0.95 × VREF V
0.94 × VREF 0.96 × VREF 0.985 × VREF V
75
165
250
mV
−20
−
−
mA
Initial Accuracy
TA = 25°C, IREF = 2.0 mA, VCC = 14 V,
VFB = COMP, (Note 2)
2.465
2.515
2.565
V
Reference Voltage
VFB Leakage Current
Open Loop Gain
VFB = COMP
VFB = 0 V
1.4 V < COMP < 4.0 V, (Note 2)
2.440
−
60
2.515
−0.2
90
2.590
V
−2.0
mA
−
dB
Unity Gain Bandwidth
(Note 2)
1.5
2.5
−
MHz
COMP Sink Current
COMP Source Current
COMP High Voltage
COMP Low Voltage
PS Ripple Rejection
COMP = 1.5 V, VFB = 2.7 V
COMP = 1.5 V, VFB = 2.3 V
VFB = 2.3 V
VFB = 2.7 V
FREQ = 120 Hz, (Note 2)
2.0
6.0
−0.2
−0.5
4.35
4.8
0.4
0.8
60
85
−
mA
−
mA
5.0
V
1.2
V
−
dB
SS Clamp, VCOMP
VSS = 2.5 V, VFB = 0 V, ISET = 2.0 V
ILIM(SET) Clamp
(Note 2)
2. Guaranteed by design, not 100% tested in production.
2.4
2.5
0.95
1.0
2.6
V
1.15
V
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