CS51021/22/23/24
Absolute Maximum Ratings
Power Supply Voltage, V
CC
............................................................................................................................................-0.3V, 20V
Driver Supply Voltage, V
C
..............................................................................................................................................-0.3V, 20V
SYNC, SLEEP, R
T
C
T
, SOFT START, V
FB
, SLOPE, I
SENSE
, UV, OV, I
SET
(Logic Pins).......................................-0.25V to V
REF
Peak GATE Output Current.........................................................................................................................................................1A
Steady State Output Current..................................................................................................................................................± 0.2A
Operating Junction Temperature, T
J
..................................................................................................................................... 150°C
Storage Temperature Range, T
S
...................................................................................................................................-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 < T
A
< 85°C, -40°C < T
J
< 150°C,
3V < V
C
< 20V, 8.2V < V
CC
< 20V, R
T
= 12kΩ, C
T
= 390pF.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
s
Under Voltage Lockout
START Threshold (CS51021/22)
START Threshold (CS51023/24)
STOP Threshold
Hysteresis (CS51021/22)
Hysteresis (CS51023/24)
I
CC
@ Startup (CS51021/22)
I
CC
@ Startup (CS51023/24)
I
CC
Operating (CS51021/23)
I
CC
Operating (CS51022/24)
I
C
Operating
s
Voltage Reference
Initial Accuracy
Total Accuracy
Line Regulation
Load Regulation
NOISE Voltage
OP Life Shift
FAULT Voltage
OK Voltage
OK Hysteresis
Current Limit
s
Error Amplifier
Initial Accuracy
Reference Voltage
V
FB
Leakage Current
Open Loop Gain
Unity Gain Bandwidth
COMP Sink Current
COMP Source Current
T
A
=25°C, I
REF
= 2mA, V
CC
= 14V,
V
FB
= COMP (Note 1)
V
FB
= COMP
V
FB
= 0V
1.4V < COMP < 4V (Note 1)
(Note 1)
COMP = 1.5V, V
FB
= 2.7V
COMP = 1.5V, V
FB
= 2.3V
2
60
1.5
2
-0.2
2.465
2.440
2.515
2.515
-0.2
90
2.5
6
-0.5
2.565
2.590
-2
V
V
µA
dB
MHz
mA
mA
T
A
= 25C, I
REF
= 2mA, V
CC
= 14V (Note1) 4.95
1mA<I
REF
<10mA
8.2V < V
CC
< 18V, I
REF
= 2mA
1mA < I
REF
< 10mA
(Note 1)
T=1000 Hours (Note 1)
Force V
REF
Force V
REF
Force V
REF
Force V
REF
4.9
5
5
6
6
5.05
5.15
20
15
V
V
mV
mV
uV
mV
V
V
mV
mA
Includes 1nF Load
7.95
12.4
7.4
0.50
4
V
CC
< UV
START
Threshold
V
CC
< UV
START
Threshold
8.25
13
7.7
0.75
5
40
45
7
6
7
8.8
13.4
8.2
1.00
6
75
75
9
8
12
V
V
V
V
V
µA
µA
mA
mA
mA
.92
×
V
REF
50
4
20
.95
×
V
REF
.97
×
V
REF
.94
×
V
REF
.96
×
V
REF
.98
×
V
REF
50
-20
105
160
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
