l4956 STMicroelectronics, l4956 Datasheet
l4956
Available stocks
Related parts for l4956
l4956 Summary of contents
Page 1
... AND POWER PC SUPPLIES LOW COST SOLUTION FOR 3.3V TO 1.5V CONVERSION SUITABLE FOR APPLICATIONS STAND BY FEATURE DESCRIPTION The L4956 is an adjustable monolithic linear regu- lator designed to satisfy very heavy load transient and efficient power conversion from 3.3V to 1.26V and lower 5A. TYPICAL APPLICATION V =3.3Vbus V PW ...
Page 2
... L4956 ABSOLUTE MAXIMUM RATINGS Symbol Supply Input Voltage PW SIG ADJ pin PG and INH pins P Power Dissipation @ T TOT amb Power Dissipation @ T case Storage Temperature st i PIN CONNECTION (Top view) tab connected to pin 4 PIN FUNCTIONS No. Name 1 V Unregulated power input voltage; this pin must be bypassed with a capacitor larger than 10 F. ...
Page 3
... 125 < T < 125 C 5 0V, 0 < T < 125 0.1A < I < 4.5V < V <6.5V SIG INH = HIGH SIG 0 < Tj < 125 C 1 4mA 6 L4956 Value Unit 2.5 C/W 50 C/W 150 Typ. Max. Unit 6.5 V 6.5 V 1.260 1.280 V 1.260 1.296 V 0 ...
Page 4
... L4956 Figure 1. DC Operating Area. O utput C urrent [ > rre nt Lim ita > 4 issip a tio n lim ...
Page 5
... Input Voltage with INH = LOGIC HIGH < < (R1+R2)/R2 OUT ADJ hyst = 200mV t High Low t D96IN364B hyst = 200mV t regulator regulator ON OFF t D96IN365A L4956 5/8 ...
Page 6
... CH2gnd Iout 2A/div Test conditions 3.3V SIG from 0.5A to 5A; dl out = 20A OUT L4956 24 ADJ 100 F/10V R5 AVX TPS INH 126 6 each D97IN593 s/div = 1.5V; Load Transient out VOUT=1.5V C10 to C15 1 F AVX X7R ...
Page 7
... MIN. TYP. 4.8 1.37 2.8 0.094 1.35 0.047 0.55 0.014 0.8 0.024 0.9 2.67 0.095 0.100 5.21 0.193 0.200 7.8 0.295 0.300 10.4 10.4 0.396 0.668 0.587 0.848 0.891 3 0.102 15.8 0.594 6.6 0.236 0.110 0.200 3.85 0.144 L4956 MAX. 0.189 0.054 0.110 0.053 0.022 0.031 0.035 0.105 0.205 0.307 0.409 0.409 0.118 0.622 0.260 0.152 7/8 ...
Page 8
... L4956 Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specification mentioned in this publication are subject to change without notice ...