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  Holtek Semiconductor Electronic Components Datasheet  

HT7321-3 Datasheet

250mA TinyPower LDO

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HT73xx-3
30V, 250mA TinyPowerTM LDO
Features
• Low power consumption
• Low voltage drop
• Low temperature coefficient
• High input voltage - up to 30V
• Output voltage accuracy: tolerance ±2%
• Over current protection
• TO-92, SOT89-3, and 8-pin SOP-EP packages
Applications
• Battery-powered equipment
• Communication equipment
• Audio/Video equipment
General Description
The HT73xx-3 device series are low power high
voltage regulators implemented in CMOS technology
which have the advantages of low voltage drop and
low quiescent current. They allow input voltages as
high as 30V. They are available with several fixed
output voltages ranging from 2.1V to 5.0V. The soft-
start function inhibits the problem of output overshoot
during power on.
Although designed primarily as fixed voltage
regulators, these devices can be used with external
components to obtain variable voltages and currents.
Selection Table
Part No.
HT7321-3
HT7323-3
HT7325-3
HT7327-3
HT7330-3
HT7333-3
HT7336-3
HT7340-3
HT7344-3
HT7350-3
Output Voltage
2.1V
2.3V
2.5V
2.7V
3.0V
3.3V
3.6V
4.0V
4.4V
5.0V
Note: ″xx″ stands for output voltages.
Package
TO-92
SOT89-3
8SOP-EP
Marking
73xx-3 (for TO-92, SOT89-3)
HT73xx-3 (for 8SOP-EP)
Rev. 1.00
1 August 26, 2015


  Holtek Semiconductor Electronic Components Datasheet  

HT7321-3 Datasheet

250mA TinyPower LDO

No Preview Available !

Block Diagram
VIN
HT73xx-3
OUT
Vref
GND
Soft Start
Pin Assignment
TO-92
SOT89-3
73xx-3
73xx-3
1 23
GND VIN VOUT
1 23
GND VIN OUT
Pin Descriptions
TO-92
1
2
3
Pin No.
SOT89-3
1
2
3
8SOP-EP
5
8, 9
1
2, 3, 4, 6, 7
Pin Name
GND
VIN
OUT
NC
OUT 1
8 VIN
NC 2 9 7 NC
NC 3 VIN 6 NC
NC 4
5 GND
HT73xx-3
8 SOP-A
(Exposed Pad)
Pin Description
Ground pin
Input pin
Output pin
No connection
Rev. 1.00
2 August 26, 2015


Part Number HT7321-3
Description 250mA TinyPower LDO
Maker Holtek Semiconductor
Total Page 16 Pages
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