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HI-SINCERITY
MICROELECTRONICS CORP.
Spec. No. : Preliminary Data Issued Date : 2001.01.01 Revised Date : 2001.05.21 Page No. : 1/3
H78M24AT H78M24BT
3-TERMINAL POSITIVE VOLTAGE REGULATOR
Description
The H78M24_T series of three-terminal positive regulators are available in the TO-126 package. This regulator can provide local on-card regulation, eliminating the distribution problems associated with single point regulation. Each device employs internal current limiting, thermal shut-down and safe operating area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 0.5A output current. Although designed primarily as fixed voltage regulators, this device can be used with external components to obtain adjustable voltages and currents.
Description
* Output current up to 500mA is available. * Eliminates external compensating circuit. * Built-in current limiter prevents elements from destruction when load is short circuit. * Built-in chip junction temperature limiting circuit protects elements against thermal destruction. * Built-in internal power dissipation limiting circuit protects transistors at output driver.
Absolute Maximum Ratings (Ta=25C)
* Input Voltage ................................................................................................................................... 35 V * Total Power Dissipation (Tc=25C) ................................................................................ Internally limited * Operating Junction Temperature ...................................................................................... 0 C to 125 C * Output Current (Tc=25C) .............................................................................................................. 0.5 A * Lead Temperature (Soldering 10S) .............................................................................................. 230 C Typical Application Block Diagram
Vin
1
H78M24_T
2
3
Vout
1 Input Current Generator
Series pass Element SOA Protection Error Amplifier Thermal Protection
3 Output
C1
C2
Starting Circuit
Reference Voltage
Note : C1 and C2 are required if regulator is located far from power supply filter and load, or oscillation may induced on the loop.
2 GND
H78M15AT, H78M15BT
HSMC Product Specification
HI-SINCERITY
MICROELECTRONICS CORP.
Electrical Characteristics
* H78M24AT Vin=33V, Io=350mA, 0CTj125C, PD5W, unless otherwise specified Symbol Vo Vo Characteristic Min
Spec. No. : Preliminary Data Issued Date : 2001.01.01 Revised Date : 2001.05.21 Page No. : 2/3
Typ
Max
Units
Output Voltage (Tj=25C) Output Voltage (27VVin38V, 5mAIo350mA) Line Regulation (Tj=25C, Io=200mA), 27VVin38V Regline Line Regulation (Tj=25C, Io=200mA), 30VVin36V Load Regulation (Tj=25C), 5mAIo500mA Regload Load Regulation (Tj=25C), 5mAIo200mA IB Quiescent Current (Tj=25C) Quiescent Current Change (Tj=25C), 27VVin38V, Io=200mA IB Quiescent Current Change (Tj=25C), 5mAIo350mA RR Ripple Rejection, 28VVin38V, Io=300mA, f=120Hz Vi-Vo Dropout Voltage (Io=500mA, Tj=25C) VN Output Noise Voltage (Tj=25C), 10Hzf100KHz Isc Short Circuit Current Limit (Tj=25C), Vin=35V Imax Peak Output Current (Tj=25C) TCVo Average Temperature Coefficient of Output Voltage, Io=5mA * H78M24BT Vin=33V, Io=350mA, 0CTj125C, PD5W, unless otherwise specified Symbol Vo Vo Characteristic
23.28 23.04 50 -
24 24.72 V 24 24.96 V 20 100 mV 16 50 400 mV 200 3.2 6 mA 0.8 mA 0.5 dB 2 V 170 uV 300 mA 700 mA -1 mV/C
Min
Typ
Max
Units
Output Voltage (Tj=25C) Output Voltage (27VVin38V, 5mAIo350mA) Line Regulation (Tj=25C, Io=200mA), 27VVin38V Regline Line Regulation (Tj=25C, Io=200mA), 30VVin36V Load Regulation (Tj=25C), 5mAIo500mA Regload Load Regulation (Tj=25C), 5mAIo200mA IB Quiescent Current (Tj=25C) Quiescent Current Change (Tj=25C), 27VVin38V, Io=200mA IB Quiescent Current Change (Tj=25C), 5mAIo350mA RR Ripple Rejection, 28VVin38V, Io=300mA, f=120Hz Vi-Vo Dropout Voltage (Io=500mA, Tj=25C) VN Output Noise Voltage (Tj=25C), 10Hzf100KHz Isc Short Circuit Current Limit (Tj=25C), Vin=35V Imax Peak Output Current (Tj=25C) TCVo Average Temperature Coefficient of Output Voltage, Io=5mA
22.8 24 25.2 V 22.8 24 25.2 V 20 120 mV 16 60 400 mV 200 3.2 6 mA 1 mA 0.5 50 dB 2 V 170 uV 300 mA 700 mA -1 mV/C
H78M15AT, H78M15BT
HSMC Product Specification
HI-SINCERITY
MICROELECTRONICS CORP.
TO-126 Dimension
D A B 123 G C I E J K M
Spec. No. : Preliminary Data Issued Date : 2001.01.01 Revised Date : 2001.05.21 Page No. : 3/3
Marking :
3 4
HSMC Logo Part Number Date Code
Product Series
Ink Marking
Style : Pin 1.Vin 2.Ground 3.Vout
F H
L
1 2
3-Lead TO-126 Plastic Package HSMC Package Code : T *:Typical
DIM 1 2 3 4 A B C D E
Inches Min. Max. *3 *3 *3 *3 0.1500 0.1539 0.2752 0.2791 0.5315 0.6102 0.2854 0.3039 0.0374 0.0413
Millimeters Min. Max. *3 *3 *3 *3 3.81 3.91 6.99 7.09 13.50 15.50 7.52 7.72 0.95 1.05
DIM F G H I J K L M
Inches Min. Max. 0.0280 0.0319 0.0480 0.0520 0.1709 0.1890 0.0950 0.1050 0.0450 0.0550 0.0450 0.0550 *0.0217 0.1378 0.1520
Millimeters Min. Max. 0.71 0.81 1.22 1.32 4.34 4.80 2.41 2.66 1.14 1.39 1.14 1.39 *0.55 3.50 3.86
Notes : 1.Dimension and tolerance based on our Spec. dated Mar. 6,1995.
2.Controlling dimension : millimeters. 3.Maximum lead thickness includes lead finish thickness, and minimum lead thickness is the minimum thickness of base material. 4.If there is any question with packing specification or packing method, please contact your local HSMC sales office.
Material :
* Lead : 42 Alloy ; solder plating * Mold Compound : Epoxy resin family, flammability solid burning class:UL94V-0
Important Notice:
* All rights are reserved. Reproduction in whole or in part is prohibited without the prior written approval of HSMC. * HSMC reserves the right to make changes to its products without notice. * HSMC semiconductor products are not warranted to be suitable for use in Life-Support Applications, or systems. * HSMC assumes no liability for any consequence of customer product design, infringement of patents, or application assistance.
Head Office And Factory :
* Head Office (Hi-Sincerity Microelectronics Corp.) : 10F.,No. 61, Sec. 2, Chung-Shan N. Rd. Taipei Taiwan R.O.C. Tel : 886-2-25212056 Fax : 886-2-25632712, 25368454 * Factory 1 : No. 38, Kuang Fu S. Rd., Fu-Kou Hsin-Chu Industrial Park Hsin-Chu Taiwan. R.O.C Tel : 886-3-5983621~5 Fax : 886-3-5982931
H78M15AT, H78M15BT
HSMC Product Specification

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