l5996 STMicroelectronics, l5996 Datasheet
l5996
Related parts for l5996
l5996 Summary of contents
Page 1
... ADVANCED MICROPROCESSOR SUPPLIES POWERSUPPLYFOR PENTIUM III INTEL MO- BILE 2.5V DESCRIPTION The L5996 is a power supply controller that offers a complete power management for CPUs of the next generation especially for mobile Pentium III. A high precise 5 bit digital to analog converter (DAC) allows to adjust the output volt- age from 0 ...
Page 2
... A complete power management include on board a programmable power-up sequencing, power good signal, skip mode operation and un- dervoltege detection. The L5996 assures a fast protection against load overvoltage and load overcurrent. Linear regulator on-board is avail- able with an output voltage of 2.5V (+/-2%) and a current capability of CLOCK BUS ...
Page 3
... O 2.5 = 3. -0.5% ID0 ID1 ID2 ID3 ID4 - ID0 ID1 ID2 ID3 , see Table 1. ID4 = 220nF 1.240 VBG 2.4 = 400 A sink 2.4 60 value SS L5996 Value Unit 60 C/W Typ. Max. Unit 25 V 0.9 1 150 A 100 180 A 5.0 5 4.5 4 2.5 2.55 V 2.5 2.575 V 500 ...
Page 4
... L5996 ELECTRICAL CHARACTERISTICS (continued) Symbol Parameter PROTECTION FUNCTIONS V -V Over-Current Threshold Voltage Pulse Skipping Mode NOSKIP = HIGH Threshold Voltage Zero Crossing Threshold Under-Voltage Threshold Upper Over-Voltage Threshold Lower Over-Voltage Threshold Over-Voltage Propagation Time Under-Voltage Propagation Time SOFT START Soft start source current ...
Page 5
... All the internal blocks are active. The device uses OVP function to discharge the output during HIGH_TO_LOW core voltage transition. The pin is driven low also during LOW_TO_HIGH core voltage transition. The pin will stay low as L5996 5/9 ...
Page 6
... L5996 long as the current limit value is reduced with re- spect to the normal operating value. This is done to limit voltage overshoots during core voltage changes. Making this signal externally available simplifies system debugging. VID0-4(pin20-24): Voltage Identification code in- put. These open collector compatible inputs are used to program the output voltage as specified in Table 1 ...
Page 7
... Figure 2. Output voltage transition between 1.3V and 1,5V measured at 200mA load current. CH1: VID 2 transition. CH2: Output voltage transition between 1.3V and 1.5V measured at 200mA load current. RSTRAP HSTRAP 28 HGATE 27 Vo HSRC 0.925V to 2.0V 26 RGATE 30 PWRGND 31 HRSNS 7 LRSNS 8 SNSGND 12 VFB 9 Vo2 PWRGOOD ENABLE 5 VID L5996 Pentium III Mobile Vo2 2.5V/150mA 7/9 ...
Page 8
... L5996 mm inch DIM. MIN. TYP. MAX. MIN. TYP. A 1.60 A1 0.05 0.15 0.002 A2 1.35 1.40 1.45 0.053 0.055 B 0.30 0.37 0.45 0.012 0.015 0.018 C 0.09 0.20 0.004 D 9.00 0.354 D1 7.00 0.276 D3 5.60 0.220 e 0.80 0.031 E 9.00 0.354 E1 7.00 0.276 E3 5.60 0.220 L 0.45 0.60 0.75 0.018 0.024 0.030 L1 1.00 0.039 K (min.), 7 (max TQFP32 8/9 OUTLINE AND MAX. MECHANICAL DATA 0.063 ...
Page 9
... The ST logo is a registered trademark of STMicroelectronics 1999 STMicroelectronics – Printed in Italy – All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. http://www.st.com L5996 9/9 ...