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HT7727A(2007) View Datasheet(PDF) - Holtek Semiconductor

Part Name
Description
View to exact match
HT7727A
(Rev.:2007)
Holtek
Holtek Semiconductor Holtek
HT7727A Datasheet PDF : 18 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
HT77XXA
Pin Assignment
T O -9 2
S O T -8 9
H T77X X A
123
F r o n t V ie w
H T77X X A #
S O T -2 3
VO UT
3
T o p V ie w
77X X A #
S O T -2 5
LX
GND
5
4
T o p V ie w
77X X A #
T o p V ie w
G N D V O U T LX
1
2
3
G N D V O U T LX
1
2
GND
LX
1
2
3
CE VO UT NC
B o tto m V ie w
G N D V O U T LX
GND
LX
CE VO UT NC
Pin Description
TO-92
Pin No.
SOT-89
SOT-23
¾
¾
¾
2
2
3
¾
¾
¾
1
1
1
3
3
2
SOT-25
1
2
3
4
5
Pin Name
Description
CE
VOUT
NC
GND
LX
Chip enable pin, high active
DC/DC converter output monitoring pin
No connection
Ground pin
Switching pin
Absolute Maximum Ratings
Supply Voltage ..............................VSS-0.3V to VSS+7V
Operating Temperature ...........................-40°C to 85°C
Storage Temperature ............................-50°C to 125°C
Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may
cause substantial damage to the device. Functional operation of this device at other conditions beyond those
listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliabil-
ity.
Thermal Information
Symbol
Parameter
Thermal Resistance
qJA
(Junction to Ambient)
(Assume no ambient airflow,
no heat sink)
PD Power Dissipation
Note: PD is measured at Ta= 25°C
Package
SOT-89
TO-92
SOT-23
SOT-25
SOT-89
TO-92
SOT-23
SOT-25
Max.
300
300
330
320
0.33
0.33
0.3
0.31
Unit
°C/W
°C/W
°C/W
°C/W
W
W
W
W
Rev 1.10
2
September 26, 2007

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