HA17723 HITACHI, HA17723 Datasheet
HA17723
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HA17723 Summary of contents
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... Description The HA17723 high-accuracy general-purpose voltage regulator features a very low stand-by current, (quiescent current) a low temperature drift, and high ripple rejection ratio. If you need over than 150mA output current, adding external PNP or NPN transistor. This voltage regulator is suitable for various applications, for example, series or parallel regulator, switching regulator. ...
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... HA17723/F/P Circuit Schematic V REF 2 V (– (+) OUT COMP ...
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... Symbol HA17723/P VCC 40 Vdiff (IN- (diff 150 OUT I 15 REF P 830 (Note 1) T Topr 0 to +70 / –20 to +75 Tstg –55 to +125 125 C, wiring density and board material must be selected HA17723/F/P HA17723F 150 15 625 (Note +70 –55 to +125 . T Board 40 mm 0.8 t ceramic or 1.5 t epoxy Unit ...
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... HA17723/F/P Electrical Characteristics (Ta = 25°C) Item Line regulation Load regulation Ripple rejection Average temperature coefficient of output voltage Reference voltage Standby current Short circuit current limit Electrical Characteristics Measuring Circuit C REF 12V 100pF REF 4 Symbol Min Typ V Line — 0.01 O — 0.1 — ...
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... HA17723 Applications Fixed Voltage Source in Series Low Voltage ( Regulator: Figure 1 shows the construction of a basic low voltage regulator. The divider (resistors R and R ) from noninverted input of the error amplifier, less than output voltage. In the fixed voltage source where the output voltage will be fed back to the error amplifier directly as shown in figure 1. Output voltage will be divided VREF since the output voltage is equal to the reference voltage ...
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... HA17723/F/P Negative Voltage Regulator: Figure 3 shows the construction of a so-called negative voltage regulator, which generates a negative output voltage with regard to GND. Assume that the output voltage, –V increases in the negative direction. As the voltage across the R provides the reference voltage, the output current of the error amplifier increases. In the control circuit, the impedance decreases with the increase of input current, which makes the base current of the external transistor Q approach GND ...
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... Figures 8 and 9 show a negative voltage switching regulator circuit and its characteristics REF OUT (+) V (– COMP 5. 1nF Figure 5 Increasing Output Current ( REF OUT 100 (– COMP 1 EE 5nF HA17723/F 0.4 V OUT 100 V OUT and Q to turn 2 7 ...
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... HA17723/F/P 2.15k C 1 0.1 F Figure 7 Positive Voltage Switching Regulator 3.65k Figure 8 Negative Voltage Switching Regulator 100 REF OUT (+)V (– COMP REF OUT (+) V (– 15pF V COMP 1.2mH V OUT 100 100 220 1.2mH V OUT –15V C 2 100 F ...
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... Figure 9 Negative Voltage Switching Regulator Operating Characteristics –16 –20 –24 –28 –32 Input Voltage V (V) IN Line Regulation I = 0.2A OUT Ta = – –28 –32 –36 –40 Input Voltage V (V) IN Load Regulation Output Current I (A) OUT HA17723/F/P –36 –40 9 ...
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... HA17723/F/P Floating-Type Fixed Voltage Source Voltage sources of the floating type or boost type are typically employed when high voltage output is required. Figure 10 shows the circuit of a floating-type fixed voltage source. Considering the stabilization in this circuit, assume that the output voltage increases. At the input terminal of the error amplifier the non- inverted input will become low compared with the inverted input, and the output current of the error amplifier decreases ...
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... Figure 12 Fixed Voltage Source with Reduction Type Current Limiter 6.0 5.0 4.0 3.0 2.0 1 Figure 13 Current Control Characteristics of Fixed Voltage Source REF OUT (+) V (– COMP 1 EE 1nF 100 200 Output Current I (mA) OUT with Reduction Type Current Limiter HA17723/F OUT ...
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... HA17723/F/P Fixed Voltage Source Switching External Control 2.15k 4.99k Figure 14 Fixed Voltage Source Switching External Control Figure 15 Operating Characteristics of Fixed Voltage Source Switching External Control REF OUT 5 Note CL CS (+) V (– 2SC458 K 3 COMP 1nF Time (sec) V OUT Note: Insert when V 10V ...
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... Relative Output Voltage vs. Output Current 1.2 1.0 0 –20 0.6 0.4 0 Output Current I 0 0.1 25 – 100 OUT V = +5V OUT V = +12V 100 120 (mA) OUT HA17723/F/P Load Regulation vs. Output Current +5V OUT V = –12V Output Current I OUT Stand-by Current vs. Input Voltage – Input Voltage –20 30 (mA) ...
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... HA17723/F/P Line Regulation vs. Input/Output Voltage Differential-1 0.2 0.1 0 – Input/Output Voltage Differential Vdiff(IN-O) (V) Current Limiting Characteristics 0.9 0.8 Sense Voltage 0.7 0.6 0.5 Limit Current 0.4 0.3 0.2 R 0.1 –100 0 Junction Temperature Tj 0 +5V OUT 1mA OUT V = +3V 0 200 150 10 100 –5 ...
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... Load Transient Response Output Current Output Voltage 5 0 –5 –10 5 s/div Time ( +12V +5V 10 OUT I = 40mA OUT 1.0 0 –5 0.1 100 HA17723/F/P Output Impedance vs. Frequency OUT V = +12V 50mA 100 k Frequency f (Hz ...
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... HA17723/F/P Package Dimensions 14 1 2.54 0.25 10.5 Max 14 1 1.27 *0.42 0.08 0.40 0.06 *Dimension including the plating thickness Base material dimension 16 19.20 20.32 Max 8 7 1.30 2.39 Max 0.48 0.10 10. 1.42 Max 0.15 0.12 M 7.62 + 0.10 0.25 – 0.05 0 – 15 ...
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... Tel: <852> (2) 735 9218 Fax: 535-1533 Fax: <852> (2) 730 0281 Hitachi Asia Ltd. Telex: 40815 HITEC HX Taipei Branch Office 3F, Hung Kuo Building. No.167, Tun-Hwa North Road, Taipei (105) Tel: <886> (2) 2718-3666 Fax: <886> (2) 2718-8180 Copyright ' Hitachi, Ltd., 1998. All rights reserved. Printed in Japan. HA17723/F/P 17 ...