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参数资料
| 型号： | L5996 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 0.5 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PQFP32 |
| 封装： | 7 X 7 MM, TQFP-32 |
| 文件页数： | 1/9页 |
| 文件大小： | 77K |
| 代理商： | L5996 |
DYNAMIC DAC DETECTION ON CHIP
PROGRAMMABLE OUTPUT FROM 0.925V
TO 2.0V WITH 0.05V AND 0.025V BINARY
STEPS
ULTRA HIGH EFFICIENCY
SEPARATE 5V BIAS SUPPLY AVAILABLE
FOR HIGH EFFICIENCY PERFORMANCE
EXCELLENT
OUTPUT
ACCURACY
±1%
OVER LINE, LOAD AND TEMPERATURE
VARIATIONS
HIGH PRECISION INTERNAL REFERENCE
DIGITALLY TRIMMED
OPERATING SUPPLY
VOLTAGE FROM
4.75V TO 25V
VERY FAST LOAD TRANSIENT
REMOTE SENSING INPUTS
INTERNAL
LINEAR
REGULATOR
2.5V
/150mA,
±2% PRECISION
POWER MANAGEMENT
- PROGRAMMABLE POWER-UP TIME
- POWER GOOD OUTPUT, SKIP MODE
- OUTPUT OVERVOLTAGE PROTECTION
- OUTPUT UNDERVOLTAGE LOCKOUT
OPERATING FREQUENCY UP TO 1MHz
MEETS INTEL MOBILE PENTIU III
Application
ADVANCED MICROPROCESSOR SUPPLIES
POWER SUPPLYFOR PENTIUM
III INTEL MO-
BILE
DESCRIPTION
The L5996 is a power supply controller that offers
a complete power management for
notebook
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 0.925V to 2.0V. Dynamic DAC code
changes are detected on chip in order to switch
the output voltage between 1.3V and 1.45V in
less tahn 100
s.The high precision internal refer-
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
July 1999
FREQ SETTING
SYNC
POWER
MANAGEMENT
& SYSTEM
SUPERVISOR
4.75V
to
25V
VO
POWER
SECTION
L5996
POWER GOOD
PWM SECTIONS
DAC
NOSKIP
ENABLE
CPU CORE
2.5V LIN. REG.
3.3V
2.5V
CPU CLK
D0
D1
D2
D3
0.925V to 2.0V
Pentium III
Mobile
D98IN997A
D4
TYPICAL APPLICATION CIRCUIT
TQFP32
(7mm x 7mm)
L5996
5 BIT DYNAMIC DAC CONTROLLER FOR MOBILE CPU
PRELIMINARY DATA
1/9
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