Absolute Maximum Ratings
Power Supply Voltage, VCC ............................................................................................................................................-0.3V, 20V
Driver Supply Voltage, VC ..............................................................................................................................................-0.3V, 20V
SYNC, SLEEP, RTCT, SOFT START, VFB, SLOPE, ISENSE, UV, OV, ISET (Logic Pins).......................................-0.25V to VREF
Peak GATE Output Current.........................................................................................................................................................1A
Steady State Output Current..................................................................................................................................................± 0.2A
Operating Junction Temperature, TJ..................................................................................................................................... 150°C
Storage Temperature Range, TS...................................................................................................................................-65 to 150°C
ESD (Human Body Model).........................................................................................................................................................2kV
Lead Temperature Soldering: Reflow (SMD styles only).............................................60 sec. max above 183°C, 230°C peak
Electrical Characteristics: Unless otherwise stated, specifications apply for -40°C < TA < 85°C, -40°C < TJ < 150°C,
3V < VC < 20V, 8.2V < VCC < 20V, RT = 12kΩ, CT = 390pF.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ꢀ Under Voltage Lockout
START Threshold (CS51021/22)
START Threshold (CS51023/24)
STOP Threshold
7.95
12.4
7.4
8.25
13
8.8
13.4
8.2
1.00
6
V
V
7.7
0.75
5
V
Hysteresis (CS51021/22)
Hysteresis (CS51023/24)
0.50
4
V
V
I
I
I
I
CC @ Startup (CS51021/22)
CC @ Startup (CS51023/24)
CC Operating (CS51021/23)
CC Operating (CS51022/24)
VCC < UVSTART Threshold
VCC < UVSTART Threshold
40
75
µA
45
7
75
9
µA
mA
mA
mA
6
8
IC Operating
Includes 1nF Load
7
12
ꢀ Voltage Reference
Initial Accuracy
Total Accuracy
T
A = 25C, IREF = 2mA, VCC = 14V (Note1) 4.95
5
5
6
6
5.05
5.15
20
V
V
1mA<IREF<10mA
8.2V < VCC < 18V, IREF = 2mA
1mA < IREF < 10mA
4.9
Line Regulation
Load Regulation
mV
mV
15
NOISE Voltage
OP Life Shift
(Note 1)
50
4
uV
mV
V
T=1000 Hours (Note 1)
Force VREF
20
FAULT Voltage
.92 × VREF .95 × VREF .97 × VREF
OK Voltage
Force VREF
.94 × VREF .96 × VREF .98 × VREF
V
OK Hysteresis
Current Limit
Force VREF
Force VREF
50
105
160
mV
mA
-20
ꢀ Error Amplifier
Initial Accuracy
TA=25°C, IREF = 2mA, VCC = 14V,
2.465
2.440
2.515
2.565
V
VFB = COMP (Note 1)
Reference Voltage
V
FB = COMP
2.515
-0.2
2.590
-2
V
VFB Leakage Current
VFB = 0V
µA
Open Loop Gain
1.4V < COMP < 4V (Note 1)
(Note 1)
60
1.5
2
90
2.5
6
dB
MHz
mA
Unity Gain Bandwidth
COMP Sink Current
COMP = 1.5V, VFB = 2.7V
COMP Source Current
COMP = 1.5V, VFB = 2.3V
2
-0.2
-0.5
mA
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
