CS51031
Absolute Maximum Ratings
Power Supply Voltage, V
CC
........................................................................................................................................................20V
Driver Supply Voltage, V
C
..........................................................................................................................................................20V
Driver Output Voltage, V
GATE
...................................................................................................................................................20V
C
OSC
, CS, V
FB
(Logic Pins) ............................................................................................................................................................6V
Peak Output Current ................................................................................................................................................................. 1.0A
Steady State Output Current ................................................................................................................................................200mA
Operating Junction Temperature, T
J
..................................................................................................................................... 150¡C
Operating Temperature Range, T
A
............................................................................................................................-40¡ to 125¡C
Storage Temperature Range, T
S
...................................................................................................................................-65 to 150¡C
ESD (Human Body Model).........................................................................................................................................................2kV
Lead Temperature Soldering
Wave Solder (through hole styles only) .....................................................................................10 sec. max, 260¡C peak
Reflow (SMD styles only) ......................................................................................60 sec. max above 183¡C, 230¡C peak
Electrical Characteristics: Specifications apply for 4.5 ² V
CC
² 16V, 3V ² V
C
² 16V,
-40¡C ² T
J
² 125¡C, unless otherwise specified.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
s
Oscillator
Frequency
Charge Current
Discharge Current
Maximum Duty Cycle
s
Short Circuit Timer
Charge Current
Fast Discharge Current
Slow Discharge Current
Start Fault Inhibit Time
Valid Fault Time
GATE Inhibit Time
Fault Duty Cycle
s
CS Comparator
Fault Enable CS Voltage
Max. CS Voltage
Fault Detect Voltage
Fault Inhibit Voltage
Hold Off Release Voltage
Regulator Threshold
Voltage Clamp
s
V
FB
Comparators
Regulator Threshold Voltage
Fault Threshold Voltage
Threshold Line Regulation
Input Bias Current
Voltage Tracking
Input Hysteresis Voltage
V
FB
= 1.2V
C
OSC
= 470pF
1.4V < V
COSC
< 2V
2.7V > V
COSC
> 2V
1 Ð (t
OFF
/t
ON
)
V
FB
= 1.0V; CS = 0.1µF; V
COSC
= 2V
1V < V
CS
< 2V
2.55V > V
CS
> 2.4V
2.4V > V
CS
> 1.5V
0V < V
CS
< 2.5V
2.6V > V
CS
> 2.4V
2.4V > V
CS
> 1.5V
160
80.0
200
110
660
83.3
240
kHz
µA
µA
%
175
40
4
0.70
0.2
9
2.5
264
66
6
0.85
0.3
15
3.1
325
80
10
1.40
0.45
23
4.6
µA
µA
µA
ms
ms
ms
%
V
FB
= 1V
V
FB
= 1.5V
V
CS
when GATE goes high
Minimum V
CS
V
FB
= 0V
V
CS
= 1.5V
2.5
2.6
2.4
1.5
0.7
0.866
V
V
V
V
V
V
0.4
0.725
1.0
1.035
V
COSC
= V
CS
= 2V
T
J
= 25¡C (note 1)
T
J
= -40 to 125¡C
T
J
= 25¡C (note 1)
T
J
= -40 to 125¡C
4.5V ² V
CC
² 16V
V
FB
= 0V
(Regulator Threshold Voltage -
Fault Threshold Voltage)
1.225
1.210
1.12
1.10
1.250
1.250
1.15
1.15
6
1
100
4
1.275
1.290
1.17
1.19
15
4
120
20
V
V
V
V
mV
µA
mV
mV
70
2
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
