HT71AXXXX TinyPowerTM LDO with Detector Features · Ultra-low supply current: 6mA typ. · Voltage detector includes hysteresis · Input voltage: 12V max. · High output voltage accuracy: ±3% · Low temperature coefficient · Package: SOT89-5 · Voltage regulator output current: 30mA Applications · Battery powered system · Audio/Video equipment · Communication 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. Typical Current LDO Output Maximum Regulator Detector Tolerance Package Input Voltage Voltage Voltage (VDF) Current (mA) Consumption (mA) HT71A3324 12V 3.3V 2.4V 30 6 ±3% SOT89-5 HT71A3327 12V 3.3V 2.7V 30 6 ±3% SOT89-5 HT71A3344 12V 3.3V 4.4V 30 6 ±3% SOT89-5 HT71A5024 12V 5.0V 2.4V 30 6 ±3% SOT89-5 HT71A5027 12V 5.0V 2.7V 30 6 ±3% SOT89-5 HT71A5033 12V 5.0V 3.3V 30 6 ±3% SOT89-5 HT71A5042 12V 5.0V 4.2V 30 6 ±3% SOT89-5 HT71A5044 12V 5.0V 4.4V 30 6 ±3% SOT89-5 Rev. 1.00 1 December 29, 2009 HT71AXXXX Block Diagram V O U T V IN A m p V R E F V S E N G N D A m p H y s te r e s is V D E T Pin Assignment V S E N 5 1 V O U T V D E T 4 2 V IN 3 G N D H T 7 1 A x x x x S O T 8 9 -5 -A (T o p V ie w ) Pin Descriptions Pin No. Pin Name Description 1 VOUT 2 VIN Power Supply Input Pin 3 GND Ground Pin Regulated Voltage Output Pin 4 VDET Voltage Detector Output Pin 5 VSEN Voltage Detector Input Sense Pin Rev. 1.00 2 December 29, 2009 HT71AXXXX Absolute Maximum Ratings Supply Voltage ......................................-0.3V to 14.0V VSEN Input Voltage Pin.....................-0.3V ~ VIN+0.3V VDET Output Voltage Pin ..........................-0.3V ~ 14V VOUT Output Voltage Pin..................-0.3V ~ VIN+0.3V Power Consumption ..........................................500mW Storage Temperature .........................-50°C to +125°C Operating Temperature ........................-40°C to +85°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. Electrical Characteristics Symbol VIN=VSEN=VOUT+2.0V, unless otherwise specified, Ta=25°C Parameter Test Conditions Min. Typ. Max. Unit VIN Operating Input Voltage ¾ ¾ ¾ 12 V ISS Supply Current VOUT>VDET, VIN=VSEN=VOUT+2 VOUT<VDET, VIN=VSEN=VDET+2 ¾ 6 12 mA VOUT-3% VOUT VOUT+3% V Voltage Regulator VO Output Voltage VIN=VOUT+2, IOUT=10mA IOUT Output Current VIN=VOUT+2, DVO=3% 20 30 ¾ mA DVO Load Regulation VIN=VOUT+2, 1mA £ IOUT £ 30mA ¾ 60 100 mV Dropout Voltage DVO=2%, IOUT=1mA ¾ 100 ¾ mV Line Regulation IOUT=1mA, VOUT+1 £ VIN £ 12V ¾ 0.2 ¾ %/V Temperature Coefficient IOUT=10mA, -40°C £ Ta £ +85°C ¾ ±0.75 ¾ mV/°C VDF+3% V VDF´0.02 VDF´0.05 VDF´0.10 V DVDIF D V D V O IN ´ V D V D T O O a Voltage Detector VD Detection Voltage VHYS Hysteresis Width IOL Output Sink Current VIN=VSEN=2V, VDET=0.2V 0.5 1.0 ¾ mA Temperature Coefficient -40°C £ Ta £ +85°C ¾ ±0.75 ¾ mV/°C D V D T D a Note: High to Low VDF-3% ¾ 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. 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. 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 Application Circuits 4 7 0 k W V IN 2 V IN 1 C V D D V D E T V S E N V O U T IN G N D 2 .2 m F Rev. 1.00 4 C O U T 2 .2 m F December 29, 2009 HT71AXXXX Package Information 5-pin SOT89 Outline Dimensions B I A J C E D G F H H 1 Symbol A Min. Nom. Max. 0.173 ¾ 0.181 B 0.055 ¾ 0.071 C 0.091 ¾ 0.102 D 0.035 ¾ 0.043 E 0.155 ¾ 0.167 F 0.013 ¾ 0.020 G 0.014 ¾ 0.022 H ¾ 1.52 ¾ H1 0.114 ¾ 0.122 I 0.055 ¾ 0.063 J 0.014 ¾ 0.017 Symbol A Rev. 1.00 Dimensions in inch Dimensions in mm Min. Nom. Max. 4.39 ¾ 4.60 B 1.40 ¾ 1.80 C 2.31 ¾ 2.59 D 0.89 ¾ 1.09 E 3.94 ¾ 4.24 F 0.33 ¾ 0.51 G 0.36 ¾ 0.56 H ¾ 1.52 ¾ H1 2.90 ¾ 3.10 I 1.40 ¾ 1.60 J 0.36 ¾ 0.43 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 Ó 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. Holtek¢s 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