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  Holtek Semiconductor Electronic Components Datasheet  

HT7827 Datasheet

500mA TinyPower LDO

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HT78XX Series
500mA TinyPowerTM LDO
Features
· Output voltage ranges: Fixed range of 1.8V, 2.5V,
2.7V, 3.0V, 3.3V, 5.0V type.
· Highly accuracy: ±2%
· Low voltage drop: 360mV (typ.),
VOUT=5.0V at 500mA
· Guaranteed output current: 500mA
· Low quiescent current: 5mA (typ.)
· Current limiting
· Over-temperature shutdown
· SOT-89, TO-92 Packages
Applications
· Battery powered systems
· Personal Digital Assistants
· Peripheral cards
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General Description
The HT78XX series of positive, linear regulators fea-
tures low quiescent current (5mA typ.) with low dropout
voltage, making them ideal for battery applications. The
devices are capable of supplying 500mA of output cur-
rent continuously.
They are available with several fixed output voltages
ranging from 1.8V to 5.0V. Although designed primarily
· PCMCIA cards
· Personal Communication Equipment
as fixed voltage regulators, these devices can be used
with external components to obtain variable voltages
and currents.
These rugged devices have Thermal Shutdown and
Current Limiting to prevent device failure under the
²Worst² of operating conditions.
Selection Table
Part No.
HT7818
HT7825
HT7827
HT7830
HT7833
HT7850
Block Diagram
Rev. 1.00
Output Voltage
1.8V
2.5V
2.7V
3.0V
3.3V
5.0V
Tolerance
±2%
V IN
O v e rc u rre n t
S h u td o w n
T h e rm a l
S h u td o w n
VO UT
R1
AM P
V re f
R2
GND
1
Package
SOT-89
TO-92
March 2, 2007


  Holtek Semiconductor Electronic Components Datasheet  

HT7827 Datasheet

500mA TinyPower LDO

No Preview Available !

Pin Assignment
S O T -8 9
H T78X X
T o p V ie w
HT78XX Series
T O -9 2
H T78X X
F r o n t V ie w
G N D V IN V O U T
G N D V IN V O U T
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B o tto m V ie w
G N D V IN V O U T
G N D V IN V O U T
N o te : F o r le a d fr e e d e v ic e s , a # m a r k is s u ffix e d a t th e e n d o f th e d a te c o d e .
Absolute Maximum Ratings*
Maximum Supply Voltage ............................ up to 8.5V
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 reliability.
²*² Absolute maximum ratings indicate limits beyond which damage to the device may occur. Operating Ratings in-
dicate conditions for which the device is intended to be functional, but do not guarantee specific performance limits.
The guaranteed specifications apply only for the test conditions listed.
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-89
TO-92
Max.
200
200
0.50
0.50
Unit
°C/W
°C/W
W
W
Rev. 1.00
2 March 2, 2007


Part Number HT7827
Description 500mA TinyPower LDO
Maker Holtek Semiconductor
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HT7827 Datasheet PDF






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