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LTC1736CG

厂商:
Linear
类别:
数字电源管理
包装:
-
封装:
SSOP
无铅情况/ROHS:
-
描述:
5-Bit Adjustable High Efficiency ...

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  • 参数
  • 描述
  • 文档
参数 数值
Vin Min (V) 4
Vin Max (V) 36
VRM Mobile, Transmeta
Comments 5-Bit Adjustable High Efficiency Synchronous Step-Down Switching Regulator
Packages SSOP-24
Monolithic (yes/no) no
Synchronous (yes/no) yes
Extended Temp I
Featured no
Date Added 1984-01-01
Price 1k * $3.50 (LTC1736CG)
New no
Number of Outputs 1
Max Phases (#) 2
Output Current (A) 20
Features VID, Active Voltage Positioning, Resistor Set Frequency, External Synchronization, Power Good
Frequency (kHz) 300
Frequency Sync Range Up to 500kHz
Frequency Adjust Range Up to 500kHz
Topology Buck
Isupply (mA) 0.45
Ishutdown (uA) 15
Vout Max (V) 2
Vout Min (V) 0.925
Architecture -
Polyphase (yes/no) no
Tracking (yes/no) no

特点
Dual N-Channel MOSFET Synchronous Drive
Synchronizable/Programmable Fixed Frequency
Wide V IN Range: 3.5V to 36V Operation
5-Bit Digital-to-Analog V OUT Selection: 0.925V to 2.00V Range with 50mV/25mV Steps
OPTI-LOOP? Compensation Minimizes C OUT
±1% Output Voltage Accuracy
Power Good Output Voltage Monitor
Output Overvoltage Crowbar Protection
Internal Current Foldback
Latched Short-Circuit Shutdown Timer with Defeat Option
Forced Continuous Control Pin
Optional Programmable Soft-Start
Remote Output Voltage Sense
Available in 24-Lead SSOP Package

典型应用

描述
描述 The LTC?1736 is a synchronous step-down switching regulator controller optimized for CPU power. The output voltage is programmed by a 5-bit digital-to-analog converter (DAC) that adjusts the output voltage from 0.925V to 2.00V according to Intel mobile VID specifications. The 0.8V reference is compatible with future microprocessor generations. The operating frequency (synchronizable up to 500kHz) is set by an external capacitor allowing maximum flexibility in optimizing efficiency. The output voltage is monitored by a power good window comparator that indicates when the output is within 7.5% of its programmed value. Protection features include: internal foldback current limiting, output overvoltage crowbar and optional short-circuit shutdown. Soft-start is provided by an external capacitor that can be used to properly sequence supplies. The operating current level is user-programmable via an external current sense resistor. Wide input supply range allows operation from 3.5V to 30V (36V maximum). Pin defeatable Burst Mode? operation provides high efficiency at low load currents. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values.

LTspice
文档名称 文档类型 软件 描述
LTC1736CGPDF下载 点击下载 点击下载 LTC3703-5 Demo Circuit - High Efficiency High Voltage Step-Down Converter (6-60V to 5 @ 5A)
设计要点 (英文)
文档名称 文档类型 软件 描述
LTC1736CGPDF下载 点击下载 点击下载 DN370 - Buck or Boost: Rugged, Fast 60V Synchronous Controller Does Both
数据表 (英文)
文档名称 文档类型 软件 描述
LTC1736CGPDF下载 点击下载 点击下载 LTC3703-5 - 60V Synchronous Switching Regulator Controller
可靠性数据
文档名称 文档类型 软件 描述
LTC1736CGPDF下载 点击下载 点击下载 R419 Reliability Data