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| HT71AXXXX TinyPowerTM LDO with Detector Features * Ultra-low supply current: 6mA typ. * Input voltage: 12V max. * Low temperature coefficient * Voltage regulator output current: 30mA * Voltage detector includes hysteresis * High output voltage accuracy: 3% * Package: SOT89-5 Applications * Battery powered system * Communication equipment * Audio/Video equipment * Home application General Description The HT71AXXXX devices are CMOS technology voltage regulators which also include an internal voltage detector. The functions of the voltage regulators include a low dropout voltage, good output voltage accuracy as well as the benefits of ultra-low supply current. The inclusion of a voltage detector function in the same device reduce what would normally be a two chip solution to a single chip solution resulting in reduced product costs. For maximum application flexibility, the voltage detector output is an N-channel open drain. Selection Table Part No. HT71A3324 HT71A3327 HT71A3344 HT71A5024 HT71A5027 HT71A5033 HT71A5042 HT71A5044 Typical Current LDO Output Maximum Regulator Detector Tolerance Package Input Voltage Voltage Voltage (VDF) Current (mA) Consumption (mA) 12V 12V 12V 12V 12V 12V 12V 12V 3.3V 3.3V 3.3V 5.0V 5.0V 5.0V 5.0V 5.0V 2.4V 2.7V 4.4V 2.4V 2.7V 3.3V 4.2V 4.4V 30 30 30 30 30 30 30 30 6 6 6 6 6 6 6 6 3% 3% 3% 3% 3% 3% 3% 3% SOT89-5 SOT89-5 SOT89-5 SOT89-5 SOT89-5 SOT89-5 SOT89-5 SOT89-5 Rev. 1.00 1 December 29, 2009 HT71AXXXX Block Diagram V IN VOUT Amp VREF VSEN GND Amp H y s te r e s is VDET Pin Assignment VSEN 5 VDET 4 1 VOUT 2 V IN 3 GND H T71A xxxx S O T 8 9 -5 -A (T o p V ie w ) Pin Descriptions Pin No. 1 2 3 4 5 Pin Name VOUT VIN GND VDET VSEN Regulated Voltage Output Pin Power Supply Input Pin Ground Pin Voltage Detector Output Pin Voltage Detector Input Sense Pin Description Rev. 1.00 2 December 29, 2009 HT71AXXXX Absolute Maximum Ratings Supply Voltage ......................................-0.3V to 14.0V VDET Output Voltage Pin ..........................-0.3V ~ 14V Power Consumption ..........................................500mW Operating Temperature ........................-40C to +85C Note: These are stress ratings only. Stresses exceeding the range specified under Absolute Maximum Ratings 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. VSEN Input Voltage Pin.....................-0.3V ~ VIN+0.3V VOUT Output Voltage Pin..................-0.3V ~ VIN+0.3V Storage Temperature .........................-50C to +125C Electrical Characteristics Symbol VIN ISS Parameter Operating Input Voltage Supply Current 3/4 VIN=VSEN=VOUT+2.0V, unless otherwise specified, Ta=25C Test Conditions Min. 3/4 3/4 Typ. 3/4 6 Max. 12 12 Unit V mA VOUT>VDET, VIN=VSEN=VOUT+2 VOUT DV O Output Voltage Output Current Load Regulation Dropout Voltage O VIN=VOUT+2, IOUT=10mA VIN=VOUT+2, DVO=3% VIN=VOUT+2, 1mA IOUT 30mA DVO=2%, IOUT=1mA IOUT=1mA, VOUT+1 VIN 12V IOUT=10mA, -40C Ta +85C VOUT-3% 20 3/4 3/4 3/4 3/4 VOUT 30 60 100 0.2 0.75 VOUT+3% 3/4 100 3/4 3/4 3/4 V mA mV mV %/V mV/C DV IN V O a Line Regulation Temperature Coefficient DV DT Voltage Detector VD VHYS IOL DV DT D a Detection Voltage Hysteresis Width Output Sink Current Temperature Coefficient High to Low 3/4 VIN=VSEN=2V, VDET=0.2V -40C Ta +85C VDF-3% VDF+3% V V mA mV/C VDF0.02 VDF0.05 VDF0.10 0.5 3/4 1.0 0.75 3/4 3/4 Note: The VDF is the detector voltage of the device. For more detailed information of the detector voltage for different devices, refer to the preceding Selection Table. Rev. 1.00 3 December 29, 2009 HT71AXXXX Functional Description The HT71Axxxx devices are a series of combined regulator and detector devices. The voltage regulator part of the devices have very low dropout voltage and low current consumption and can supply up to 30mA of output current. The output voltage is available in both 3.3V and 5V types. An input voltage of up to 12V can be accepted on their input pin. The voltage detector part of the devices can detect an externally supplied voltage on its sense pin. This externally supplied voltage will be compared with a fixed internal reference voltage which can have a range of fixed voltages ranging from 2.4V to 4.4V. When the external sense voltage falls below the detect voltage the detector output will switch low. The detector output is an open drain NMOS type therefore users must connect an external pull-high resistor for correct operation. The voltage detectors consist of a high-precision and low power consumption standard voltage source as well as a comparator, hysteresis circuit, and an output driver. CMOS technology ensures low power consumption. Although designed primarily as fixed voltage detectors, these devices can be used with external components to detect user specified threshold voltages. Application Circuits 470kW VDD VSEN V IN 2 VDET VOUT GND C 2 .2 m F OUT V IN 1 C 2 .2 m F IN Rev. 1.00 4 December 29, 2009 HT71AXXXX Package Information 5-pin SOT89 Outline Dimensions B A I J E C D F H H1 G Symbol A B C D E F G H H1 I J Dimensions in inch Min. 0.173 0.055 0.091 0.035 0.155 0.013 0.014 3/4 0.114 0.055 0.014 Nom. 3/4 3/4 3/4 3/4 3/4 3/4 3/4 1.52 3/4 3/4 3/4 Max. 0.181 0.071 0.102 0.043 0.167 0.020 0.022 3/4 0.122 0.063 0.017 Symbol A B C D E F G H H1 I J Dimensions in mm Min. 4.39 1.40 2.31 0.89 3.94 0.33 0.36 3/4 2.90 1.40 0.36 Nom. 3/4 3/4 3/4 3/4 3/4 3/4 3/4 1.52 3/4 3/4 3/4 Max. 4.60 1.80 2.59 1.09 4.24 0.51 0.56 3/4 3.10 1.60 0.43 Rev. 1.00 5 December 29, 2009 HT71AXXXX Holtek Semiconductor Inc. (Headquarters) No.3, Creation Rd. II, Science Park, Hsinchu, Taiwan Tel: 886-3-563-1999 Fax: 886-3-563-1189 http://www.holtek.com.tw Holtek Semiconductor Inc. (Taipei Sales Office) 4F-2, No. 3-2, YuanQu St., Nankang Software Park, Taipei 115, Taiwan Tel: 886-2-2655-7070 Fax: 886-2-2655-7373 Fax: 886-2-2655-7383 (International sales hotline) Holtek Semiconductor Inc. (Shenzhen Sales Office) 5F, Unit A, Productivity Building, No.5 Gaoxin M 2nd Road, Nanshan District, Shenzhen, China 518057 Tel: 86-755-8616-9908, 86-755-8616-9308 Fax: 86-755-8616-9722 Holtek Semiconductor (USA), Inc. (North America Sales Office) 46729 Fremont Blvd., Fremont, CA 94538 Tel: 1-510-252-9880 Fax: 1-510-252-9885 http://www.holtek.com Copyright O 2009 by HOLTEK SEMICONDUCTOR INC. The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek assumes no responsibility arising from the use of the specifications described. The applications mentioned herein are used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. Holteks products are not authorized for use as critical components in life support devices or systems. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw. Rev. 1.00 6 December 29, 2009 |
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