LTC1699-81 - SMBus VID Voltage Programmers

LTC1699-80 - SMBus VID Voltage Programmers - Linear Technology（凌力尔特）

The LTC1699-80, LTC1699-81 and LTC1699-82 are precision (±0.35% max), digitally programmed resistor dividers that comply with Intel 5-bit mobile (LTC1699-80), desktop VRM8.4 (LTC1699-81) and VRM9.0 (LTC1699-82) VID specifications. Each IC can switch the output of a DC/DC converter between two set voltages. A digital input pin, SEL, selects one of two divider settings stored into registers via a 2-wire SMBus interface.

The SMBus interface uses Write Word protocol to setup the registers and to turn the DC/DC converters on or off. Read Word protocol is used to verify register contents and to return the On/Off status of the converters. The LTC1699-80, LTC1699-81 and LTC1699-82 incorporate safeguards against errors due to bus conflicts.

Three open-drain N-channel outputs (CPU_ON, IO_ON and CLK_ON) are provided to turn DC/DC converter supplies on or off via their RUB/SS inputs. A global control pin, VRON is used to turn the converters on or off simultaneously. An internal timer pulls the PGOOD pin low for 50µs if the divider setting changes or the converters are turned on via the SMBus and the VRON pin.

Fully Compliant with Intel 5-Bit Mobile (LTC1699-80) and Desktop VRM8.4 (LTC1699-81) and VRM9.0 (LTC1699-82) VID Specificatio

Precision ±0.35% Programmable Resistor Divider for Use with 0.8V Referenced DC/DC Converters

Two Different Divider Settings Can Be Stored Using a 2-Wire SMBus Serial Interface (Rev 1.1)

Built-In Safeguards Minimize Misprogramming Due to Bus Conflicts

Three Open-Drain Pins (CPU_ON, IO_ON, CLK_ON) and a Global Control Pin (VRON) to Shutdown or Soft-Start 3 DC/DC Converters Simul

PGOOD Pin and 50µs PGOOD Timer

Available in MSOP-8 and SSOP-16 Package

Intel Desktop Pentium® III Power Supply

Intel Mobile Pentium® Power Supply with Intel SpeedStep™ Technology

Desktop AMD Athlon™ Power Supply

Software Programmable Remote Power Supply

Power Supplies with Voltage Margining

器件型号	封装	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量)
LTC1699EGN-80	SSOP-16	E	$2.80	$2.50
LTC1699EGN-80#PBF	SSOP-16	E	$2.80	$2.50
LTC1699EGN-80#TR	SSOP-16	E		$2.61
LTC1699EGN-80#TRPBF	SSOP-16	E		$2.61
LTC1699EGN-81	SSOP-16	E	$2.80	$2.50
LTC1699EGN-81#PBF	SSOP-16	E	$2.80	$2.50
LTC1699EGN-81#TR	SSOP-16	E		$2.61
LTC1699EGN-81#TRPBF	SSOP-16	E		$2.61
LTC1699EGN-82	SSOP-16	E	$2.80	$2.50
LTC1699EGN-82#PBF	SSOP-16	E	$2.80	$2.50
LTC1699EGN-82#TR	SSOP-16	E		$2.61
LTC1699EGN-82#TRPBF	SSOP-16	E		$2.61
LTC1699EMS8-80	MS-8	E	$2.40	$2.15
LTC1699EMS8-80#PBF	MS-8	E	$2.40	$2.15
LTC1699EMS8-80#TR	MS-8	E		$2.21
LTC1699EMS8-80#TRPBF	MS-8	E		$2.21
LTC1699EMS8-81	MS-8	E	$2.40	$2.15
LTC1699EMS8-81#PBF	MS-8	E	$2.40	$2.15
LTC1699EMS8-81#TR	MS-8	E		$2.21
LTC1699EMS8-81#TRPBF	MS-8	E		$2.21
LTC1699EMS8-82	MS-8	E	$2.40	$2.15
LTC1699EMS8-82#PBF	MS-8	E	$2.40	$2.15
LTC1699EMS8-82#TR	MS-8	E		$2.21
LTC1699EMS8-82#TRPBF	MS-8	E		$2.21

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