PDF預(yù)覽

• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• 14
• 15
• 16
• 17

L6911D

5 BIT PROGRAMMABLE STEP DOWN CONTROLLER

WITH SYNCHRONOUS RECTIFICATION

s

s

s

s

s

s

s

s

s

s

s

s

OPERATING SUPPLY IC VOLTAGE FROM 5V

TO 12V BUSES

UP TO 1.3A GATE CURRENT CAPABILITY

TTL-COMPATIBLE 5 BIT PROGRAMMABLE

OUTPUT COMPLIANT WITH VRM 9.0 :

1.100V TO 1.850V WITH 0.025V BINARY

STEPS

VOLTAGE MODE PWM CONTROL

EXCELLENT OUTPUT ACCURACY: 鹵1%

OVER LINE AND TEMPERATURE

VARIATIONS

VERY FAST LOAD TRANSIENT RESPONSE:

FROM 0% TO 100% DUTY CYCLE

POWER GOOD OUTPUT VOLTAGE

OVERVOLTAGE PROTECTION AND

MONITOR

OVERCURRENT PROTECTION REALIZED

USING THE UPPER MOSFET'S R

dsON

200KHz INTERNAL OSCILLATOR

OSCILLATOR EXTERNALLY ADJUSTABLE

FROM 50KHz TO 1MHz

SOFT START AND INHIBIT FUNCTIONS

SO-20

ORDERING NUMBERS: L6911D

L6911DTR

(Tape and Reel)

APPLICATIONS

s

POWER SUPPLY FOR ADVANCED

MICROPROCESSOR CORE

s

DISTRIBUTED POWER SUPPLY

s

HIGH POWER DC-DC REGULATORS

DESCRIPTION

The device is a power supply controller specifically de-

signed to provide a high performance DC/DC conver-

sion for high current microprocessors. A precise 5-bit

digital to analog converter (DAC) allows adjusting the

output voltage from 1.30V to 2.05V with 50mV binary

steps and from 2.10V to 3.50V with 100mV binary steps.

The high precision internal reference assures the se-

lected output voltage to be within 鹵1%. The high peak

current gate drive affords to have fast switching to the

external power mos providing low switching losses.

The device assures a fast protection against load

overcurrent and load overvoltage. An external SCR is

triggered to crowbar the input supply in case of hard

over-voltage. An internal crowbar is also provided

turning on the low side mosfet as long as the over-

voltage is detected. In case of over-current detection,

the soft start capacitor is discharged and the system

works in HICCUP mode.

BLOCK DIAGRAM

Vcc 5 to 12V

Vin 5V to12V

PGOOD

SS

VCC

OCSET

BOOT

MONITOR and

PROTECTION

OVP

RT

UGATE

OSC

PHASE

LGATE

PGND

Vo

1.100V to 1.850V

VD0

VD1

VD2

VD3

VD4

D/A

+

-

E/A

-

+

PWM

GND

VSEN

VFB

D98IN957_2

COMP

November 2001

1/17

next

L6911DTR相關(guān)型號(hào)PDF文件下載

• 型號(hào)
  版本
  描述
  廠商
  下載
• L6910
  英文版
  ADJUSTABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATI...
  
  L6910
• L6910
  英文版
  Buck Regulator Positive Output Step-Down DC-DC Controller I...
  L6910
• L6910
  英文版
  ADJUSTABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATI...
  STMICROELECTRON...
  L6910
• L6911
  英文版
  5 BIT PROGRAMMABLE POWER SUPPLY CONTROLLER FOR PENTIUM II PR...
  
  L6911
• L6911
  英文版
  5 BIT PROGRAMMABLE POWER SUPPLY CONTROLLER FOR PENTIUM II PR...
  STMICROELECTRON...
  L6911
• L6917
  英文版
  5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER
  
  L6917
• L6917
  英文版
  5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER
  STMICROELECTRON...
  L6917
• L6918
  英文版
  5 BIT PROGRAMMABLE MULTIPHASE CONTROLLER
  
  L6918
• L6918
  英文版
  5 BIT PROGRAMMABLE MULTIPHASE CONTROLLER
  STMICROELECTRON...
  L6918
• L6919
  英文版
  5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER WITH DYNAMIC VID MA...
  ETC
  L6919
• L6910A
  英文版
  ADJUSTABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATI...
  
  L6910A
• L6910A
  英文版
  ADJUSTABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATI...
  STMICROELECTRON...
  L6910A
• L6910G
  英文版
  ADJUSTABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATI...
  STMICROELECTRON...
  L6910G
• L6911A
  英文版
  Industrial Control IC
  ETC
  L6911A
• L6911A
  英文版
  5 BIT PROGRAMMABLE POWER SUPPLY
  STMicro
  L6911A
• L6911B
  英文版
  5 BIT PROGRAMMABLE POWER SUPPLY CONTROLLER FOR PENTIUM II PR...
  
  L6911B
• L6911B
  英文版
  5 BIT PROGRAMMABLE POWER SUPPLY CONTROLLER FOR PENTIUM II PR...
  STMICROELECTRON...
  L6911B
• L6911C
  英文版
  Analog IC
  ETC
  L6911C
• L6911C
  英文版
  5 BIT PROGRAMMABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS REC...
  
  L6911C
• L6911D
  英文版
  5 BIT PROGRAMMABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS REC...
  
  L6911D

您可能感興趣的PDF文件資料

• L6910G
• L6910
• L6910TR
• L6910GTR
• L6910GTR
• L6910
• L6910ATR
• L6910ATR
• L6910ATR
• L6910A
• L6910A
• L6910_05

熱門IC型號(hào)推薦

• LBC857BDW1T1G
• LM3080N
• LM2931AM-5.0
• LM1086CSX-ADJ
• LB1836ML-TLM-E
• LM2576HVSX-ADJ
• LP5951MF-3.3
• LD2985AM28R
• LM2594HVM-ADJ
• LTC3400ES6#TRPBF
• LM94022BIMGX
• LCMX0256C-3TN100C