This part is a kind of semiconductor called CD7830CS.
Function of this product has Power amplifier.
Manufacturers : Huajing Microelectronics
Image and pinout :
Some of the text within the PDF file :
1. CD7830 CS 2. 2.1 FSIP7 CD7698 CD7830CS 2.2 1 2 3 4 1234567 GND OUT VCCV IN 5 Vstop 6 VCC 7 BS 14 0510 5807228-5542 14 0510 5800864 3. 3.1 3.2 3.3 Tamb= 25 VCC VCCV IO PD Tamb Tstg 6 3 CD7830CS 30 60 -1.3 ~1.3 4.5 -20 ~ 85 -40 ~125 V V AP-P W VCC I2p-p Tamb= 25 VCC=24V Vsat Vsat ICC V2 24 V 1.5 1.5 Ap-p 0.5 1.0 1.8 2.6 1.5 V V V 0.8 1.6 V 8.0 11.5 24.0 mA 11 V 24 4. 4. 1 LA7850 CD7830CS CD7830CS 1234 567 560pF 91k 22k 56pF 0.056 F 100 F Vcc(OUT)24V 1000pF 0.033 F 0.033 F 1000 F 68k 390 1F 17 16 4.7 33 100 F 0.047 F 15 LA7850 4. 2 LA7820 0.033 F* 0.047 F 0.01 F 300 R1* 560pF* 2.2 F 82k 0.022 F Vcc=12V CD7830CS 1234 567 47pF* 1000pF* 9 8.2k 47k Vcc1=24V 8 3k 1000 F LA7820 1.2k 7 * R1 100 1k * RC 470 100 F 34 4. 3 LA7620 Vcc2 CD7830 [ ... ]