參數(shù)資料
型號： AT9933LG-G
廠商： SUPERTEX INC
元件分類： 穩(wěn)壓器
中文描述： SWITCHING CONTROLLER, PDSO8
封裝： 4.90 X 3.90 MM, 1.75 MM HEIGHT, 1.27 MM PITCH, GREEN, MS-012AA, SOIC-8
文件頁數(shù)： 3/9頁
文件大?。?/td> 505K
代理商： AT9933LG-G
3
AT9933
Supertex inc.
●
1235 Bordeaux Drive, Sunnyvale, CA 94089
●
Tel: 408-222-8888
●
www.supertex.com
Electrical Characteristics
(cont.)(Specifications are at T
A
= 25°C. V
IN
= Open, V
DD
= 7.5V unless otherwise noted)
Sym
Description
Min
Typ
Max
Units
Conditions
Reference
V
REF
REF pin voltage 0°C < T
A
< +85°C
-
1.212
1.25
1.288
V
REF bypassed with a 0.1μF
capacitor to GND, I
REF
= 0,
PWMD = 5.0V
REF pin voltage -40°C < T
A
< 125°C
-
1.187
1.25
1.312
V
REFLINE
Line regulation of reference voltage
-
0
-
20
mV
REF bypassed with a 0.1μF
capacitor to GND, I
= 0,
V
DD
= 7.0 - 9.0V, PWMD = 5.0V
I
REF
Reference output current range
-
-0.01
-
500
μA
REF bypassed with a 0.1μF
capacitor to GND, I
= 0;
V
DD
= 7.0 - 9.0V, PWMD = 5.0V
V
REFLOAD
Load regulation of reference voltage
-
0
-
10
mV
REF bypassed with a 0.1μF
capacitor to GND,
I
REF
= 0 - 500μA, PWMD = 5.0V
PWM Dimming
V
PWMD(lo)
V
PWMD(hi)
R
PWMD
GATE
I
SOURCE
I
SINK
T
RISE
T
FALL
PWMD input low voltage
PWMD input high voltage
PWMD pull-down resistance
*
*
-
-
-
-
0.8
-
150
V
V
k
V
DD
= 7.0 - 9.0V
V
DD
= 7.0 - 9.0V
V
PWMD
= 5.0V
2.0
50
100
GATE short circuit current
GATE sinking current
GATE output rise time
GATE output fall time
-
-
-
-
0.165
0.165
-
-
-
-
-
-
A
A
ns
ns
V
GATE
= 0V
V
GATE
= V
DD
C
GATE
= 500pF
C
GATE
= 500pF
30
30
50
50
Input Current Sense Comparator
V
TURNON1
Voltage required to turn GATE on
*
85
100
115
mV
CS2 = 200mV; CS1 increasing;
GATE goes LOW to HIGH
CS2 = 200mV; CS1 decreasing;
GATE goes HIGH to LOW
CS2 = 200mV;
CS1 = 50mV to +200mV step
CS2 = 200mV;
CS1 = 50mV to -100mV step
V
TURNOFF1
Voltage required to turn GATE off
*
-15
0
15
mV
T
D1,ON
Delay to output (turn on)
-
-
150
250
ns
T
D1,OFF
Delay to output (turn off)
-
-
150
250
ns
Output Current Sense Comparator
V
TURNON2
Voltage required to turn GATE on
*
85
100
115
mV
CS1 = 200mV; CS2 increasing;
GATE goes LOW to HIGH
CS1 = 200mV; CS2 decreasing;
GATE goes HIGH to LOW
CS1 = 200mV;
CS2 = 50mV to +200mV step
CS1 = 200mV;
CS2 = 50mV to -100mV step
V
TURNOFF2
Voltage required to turn GATE off
*
-15
0
15
mV
T
D2,ON
Delay to output (turn on)
-
-
150
250
ns
T
D2,OFF
Delay to output (turn off)
-
-
150
250
ns
Notes:
1. Also limited by package power dissipation limit, whichever is lower.
2. Depends on the current drawn by the part - see application section.
* Specifications apply over the full operating ambient temperature range of -40oC < T
A
< +125oC. Guaranteed by design and characterization.
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