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  Holtek Semiconductor Electronic Components Datasheet  

HT72D1533 Datasheet

High PSRR 300mA Dual LDO Regulator

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HT72Dxxxx
High PSRR 300mA Dual LDO Regulator
Features
● Output Current: 300mA/Each Channel
● Dropout Voltage: 0.34V (Typ.)
(VOUT=2.5V@IOUT=300mA)
● Maximum Input Voltage: 7.0V
● Output Voltage Range: 1.5~5.0V
● High Output Voltage Accuracy: ±2%
● Low Power Consumption: 30μA (typ.)
● High Ripple Rejection: 70dB (1kHz@IOUT=30mA)
● Operating Temperature: -40°C~85°C
● Low ESR Capacitor Compatible: Ceramic
Capacitor
● Over Temperature Protection
● Current Limiting
● Ultra Small Package: SOT23-6
Applications
● Mobile phones
● Cordless phones and radio communication
equipment
● Portable games
● Camera, Video recorders
● Portable audio equipment
General Description
The HT72Dxxxx series are CMOS-based voltage
regulator ICs with high output voltage accuracy, The
devices possess the benefits of dual outputs, low
output noise, high ripple rejection ratio, low dropout
and very fast turn-on times.
The devices include a reference voltage sources, error
amplifiers, driver transistors, current limiters and
phase compensators, all fully integrated.
The HT72Dxxxx’s current limiters' fold back circuit
also operates as a short circuit protect function for
the output current limiter. This high level of output
stability is maintained even during frequent load
fluctuations, due to the excellent transient response
performance and high PSRR achieved across a broad
range of frequencies. The output voltage for each of
the dual internal regulators is fully independent. The
device has independent enable pins to shutdown each
internal regulator, resulting in greatly reduced power
consumption.
Rev. 1.00
1 August 08, 2011
Datasheet pdf - http://www.DataSheet4U.net/


  Holtek Semiconductor Electronic Components Datasheet  

HT72D1533 Datasheet

High PSRR 300mA Dual LDO Regulator

No Preview Available !

www.DataSheet.co.kr
Pin Assignment
VOUT1
6
VSS
5
VOUT2
4
HT72Dxxxx
Top View
Pin
1
2
3
4
5
6
Block Diagram
1
EN1
Name
EN1
VIN
EN2
VOUT2
VSS
VOUT1
23
VIN EN2
Pin Assignment
Pin Description
Regulator 1 Enable - high enable
Input Pin
Regulator 2 Enable - high enable
Regulator 2 Output
Ground Pin
Regulator 1 Output
VIN
EN1
EN2
Short Current
Shutdown
Vref
Short Current
Shutdown
Vref
VOUT1
VSS
VOUT2
Absolute Maximum Ratings (Note 1)
Maximum Input Supply Voltage...........................................................................................................................7.5V
VOUT1, VOUT2 to VSS..................................................................................................................VSS - 0.3V ~ VIN + 0.3V
Power Dissipation............................................................................................................................................250mW
Ambient Temperature Range................................................................................................................-40°C ~ +85°C
Junction Temperature.......................................................................................................................................+150°C
Storage Temperature Range................................................................................................................-55°C ~ +125°C
Rev. 1.00
2 August 08, 2011
Datasheet pdf - http://www.DataSheet4U.net/


Part Number HT72D1533
Description High PSRR 300mA Dual LDO Regulator
Maker Holtek Semiconductor
Total Page 14 Pages
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