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CS51021A Datasheet(PDF) 3 Page - ON Semiconductor

Part No. CS51021A
Description  Enhanced Current Mode PWM Controller
Download  11 Pages
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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CS51021A Datasheet(HTML) 3 Page - ON Semiconductor

 
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CS51021A, CS51022A, CS51023A, CS51024A
http://onsemi.com
3
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)
VCC < UVSTART Threshold
40
75
mA
ICC @ Startup (CS51023A/4A)
VCC < UVSTART Threshold
45
75
mA
ICC Operating (CS51021A/3A)
7.0
9.0
mA
ICC Operating (CS51022A/4A)
6.0
8.0
mA
ICC Operating
Includes 1.0 nF Load
7.0
12
mA
Voltage Reference
Initial Accuracy
TA = 25°C, IREF = 2.0 mA, VCC = 14 V, (Note 2)
4.95
5.0
5.05
V
Total Accuracy
1.0 mA < IREF < 10 mA
4.9
5.0
5.15
V
Line Regulation
8.2 V < VCC < 18 V, IREF = 2.0 mA
6.0
20
mV
Load Regulation
1.0 mA < IREF < 10 mA
6.0
15
mV
NOISE Voltage
(Note 2)
50
mV
OP Life Shift
T = 1000 Hours, (Note 2)
4.0
20
mV
FAULT Voltage
Force VREF
0.90
× VREF 0.93 × VREF
0.95
× VREF
V
OK Voltage
Force VREF
0.94
× VREF 0.96 × VREF 0.985 × VREF
V
OK Hysteresis
Force VREF
75
165
250
mV
Current Limit
Force VREF
−20
mA
Error Amplifier
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 = COMP
2.440
2.515
2.590
V
VFB Leakage Current
VFB = 0 V
−0.2
−2.0
mA
Open Loop Gain
1.4 V < COMP < 4.0 V, (Note 2)
60
90
dB
Unity Gain Bandwidth
(Note 2)
1.5
2.5
MHz
COMP Sink Current
COMP = 1.5 V, VFB = 2.7 V
2.0
6.0
mA
COMP Source Current
COMP = 1.5 V, VFB = 2.3 V
−0.2
−0.5
mA
COMP High Voltage
VFB = 2.3 V
4.35
4.8
5.0
V
COMP Low Voltage
VFB = 2.7 V
0.4
0.8
1.2
V
PS Ripple Rejection
FREQ = 120 Hz, (Note 2)
60
85
dB
SS Clamp, VCOMP
VSS = 2.5 V, VFB = 0 V, ISET = 2.0 V
2.4
2.5
2.6
V
ILIM(SET) Clamp
(Note 2)
0.95
1.0
1.15
V
2. Guaranteed by design, not 100% tested in production.


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