HA17723 Renesas Electronics Corporation., HA17723 Datasheet
HA17723
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HA17723 Summary of contents
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... Precision Voltage Regulator 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 (– (+) IN COMP OUT ...
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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 Unit 150 625 (Note +70 C –55 to +125 Board 0.8 t ceramic or 1.5 t epoxy 3 ...
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... HA17723/F/P Electrical Characteristics (Ta = 25°C) Item Symbol Line regulation V O Load regulation V O Ripple rejection R REJ Average temperature coefficient of output voltage Reference voltage V REF Standby current I ST Short circuit current limit I SC Electrical Characteristics Measuring Circuit REF 12V 5.0V OUT 100pF, C ...
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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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... In this circuit, the self-oscillation stabilizes the output voltage and the change in output is absorbed by the changes of the switches conducting period. Figures 8 and 9 show a negative voltage switching regulator circuit and its characteristics REF OUT 0.4 V (+) V (– COMP EE 1 1nF 100 REF OUT 100 (– COMP 1 EE 5nF HA17723/F OUT V OUT and Q to turn ...
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... HA17723/F 2.15k 0.1 F Figure 7 Positive Voltage Switching Regulator 0 3.65k 1M Figure 8 Negative Voltage Switching Regulator 100 REF OUT (+)V (– COMP 100 220 V V REF OUT (+) V (– 15pF V COMP 1.2mH V OUT 100 1.2mH V OUT –15V C 2 100 F ...
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... Output Current I Figure 9 Negative Voltage Switching Regulator Operating Characteristics –16 –20 –24 –28 –32 –36 (V) IN Line Regulation I = 0.2A OUT Ta = – –32 –36 –40 (V) IN Load Regulation (A) OUT HA17723/F/P –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 V 5.0 4.0 3.0 2.0 1 Output Current I Figure 13 Current Control Characteristics of Fixed Voltage Source with Reduction Type Current Limiter REF OUT (+) V (– COMP 1 EE 1nF 100 200 (mA) OUT HA17723/F/P V OUT ...
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... HA17723/F/P Fixed Voltage Source Switching External Control REF R 1 2.15k V (+) COMP EE 4.99k Figure 14 Fixed Voltage Source Switching External Control Figure 15 Operating Characteristics of Fixed Voltage Source Switching External Control OUT 5 Note (– 2SC458 1nF Time (sec) V OUT Note: Insert when V 10V OUT ...
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... Relative Output Voltage vs. Output Current 1.2 1.0 0 –20 0.6 0.4 0 Output Current I OUT Load Regulation vs. Output Current-2 0.2 V OUT V = –12V 0.1 25 –20 80 100 0 Stand-by Current vs. Input Voltage +5V OUT V = +12V 100 120 0 (mA) HA17723/F – Output Current I (mA) OUT OUT REF OUT Ta = – Input Voltage V ( ...
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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 0.3 0 0.1 –100 0 100 Junction Temperature Tj Input/Output Voltage Differential-2 0 +5V OUT 1mA OUT V = +3V 0 –5 Input/Output Voltage Differential Vdiff(IN-O) (V) ...
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... Load Transient Response V IN Output Current V OUT I OUT R SC Output Voltage 5 0 –5 –10 5 s/div Time ( s) Output Impedance vs. Frequency 10 = +12V OUT = + +12V IN = 40mA 50mA L 1.0 0 –5 0.1 100 1 k HA17723/F 100 Frequency f (Hz) 15 ...
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... HA17723/F/P Package Dimensions 20.32 Max 14 1 2.39 Max 2.54 0.25 10.06 10.5 Max 14 1 1.42 Max 1.27 *0.42 0.08 0.40 0.06 *Dimension including the plating thickness Base material dimension 16 19. 1.30 0.48 0.10 0 – 15 Hitachi Code JEDEC EIAJ Mass (reference value) ...
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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 ...