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PDF HT7227 Data sheet ( Hoja de datos )
| Número de pieza | HT7227 | |
| Descripción | 300mA TinyPower LDO | |
| Fabricantes | Holtek Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de HT7227 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
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HT72XX Series
300mA 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: 240mV (typ.),
VOUT=5.0V at 300mA
· Maximum Input Voltage: 8V
· Guaranteed output current: 300mA
· Low quiescent current: 4mA (typ.)
· Current limiting
· Over-temperature shutdown
· SOT23, SOT23-5, SOT89, TO92 Packages
Applications
· Portable electronics
· Wireless devices
· Cordless phones
· PC peripherals
· Battery powered devices
· Electronic scales
General Description
The HT72XX series of positive, linear regulators fea-
tures low quiescent current (4mA typ.) with low dropout
voltage, making them ideal for battery applications. The
space-saving SOT23 package is attractive for ²Pocket²
and ²Hand Held² applications. The devices are capable
of supplying 300mA of output current continuously.
They are available with several fixed output voltages
ranging from 1.8V to 5.0V. Although designed primarily
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.
Output Voltage
HT7218
1.8V
HT7225
HT7227
2.5V
2.7V
HT7230
HT7233
3.0V
3.3V
HT7250
5.0V
Tolerance
±2%
Package
SOT23
SOT23-5
SOT89
TO92
Marking
72XX# (for SOT23)
72XX# (for SOT23-5)
HT72XX# (for SOT89)
HT72XX (for TO92)
Note:
²XX² stands for output voltages.
For lead free devices, TO92 package will add a ²#² mark at the end of the date code, whereas SOT89 &
SOT23, SOT23-5 packages will add a ²#² mark at the end of the marking.
Rev. 1.20
1 September 30, 2008
http://www.Datasheet4U.com
1 page  
· Increased Output voltage Circuit
V IN V IN
C1
10mF
H T72X X
S e r ie s
IS S G N D
VO UT
C2
10mF
V XX
C om m on
S in g le p o in t G N D
R2
VOUT = VXX
(1+
)+
R1
ISS
R2
HT72XX Series
V OUT
R1
R2
C om m on
· Dual Supply Circuit
IC 1
V IN V IN H T 7 2 X X V O U T
S e r ie s
IC 2 G N D V X X 1
V IN H T 7 2 X X V O U T
S e r ie s
C1
10mF
GND
C2
10mF
R 1 V XX2
C om m on
S in g le p o in t G N D
VO=UT1
VXX2 + VXX1
VO=UT2 VXX2
V O U T1
C3
10mF
V O U T2
C om m on
· Tracking Voltage Regulator
V IN V IN H T 7 2 X X V O U T
S e r ie s
V OUT
C1
10mF G N D
C2
10mF
RA
S in g le p o in t G N D
RB
- V IN V O
-VOO= V UT x
RB
RA
Rev. 1.20
5 September 30, 2008
5 Page 
3-pin TO92 Reel Dimensions (Unit: mm)
HT72XX Series
58
88
360
P a c k a g e U p , F la t S id e U p
30
P a c k a g e U p , F la t S id e D o w n
43
Rev. 1.20
11 September 30, 2008
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet HT7227.PDF ] | |
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