PM6644 查看數據表（PDF） - STMicroelectronics

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PM6644

350 mA adjustable step-down regulator

STMicroelectronics 

PM6644

Simplified application schematic

Figure 6.



VOUT vs. load

Figure 7. VREF3 vs. output load















6OUT,OADREGULATION 6).  6

6OUT,OADREGULATION 6). 6

6OUT,OADREGULATION 6).  6

6OUT,OADREGULATION 6).  6









,/!$;!=



!-V

Figure 8. Shutdown VIN current vs. VIN

(EN=0 V)

%

%

%

%

%

%

6). SHUTDOWN CURR ENT





62%&63 6OUT LOAD 6). 6

62%&63 6OUT LOAD 6).6

62%&63 6OUT LOAD 6). 6

62%&63 6OUT LOAD 6). 6















,/!$;!=

!-V

Figure 9. No load VIN current vs. VIN

(EN=VIN)

%

6).OPERATINGCURRENT

%

%

"906OUT

"90'.$ 6OUT6

%

%

%





















6).;6=

!-V

%





















6).;6=

!-V

Figure 10. Power-up sequence, no load

Figure 11. Power-up sequence, 69 Ω load

Doc ID 023203 Rev 1

11/35

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