上一篇：LTC1646是CompactPCI 双通道热插拔控制器
The LTC1735-1 is a synchronous step-down switching regulator controller optimized for CPU power. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values.
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, conforming to Intel Mobile CPU Specifications.
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 while 99% duty cycle provides low dropout operation.
Dual N-Channel MOSFET Synchronous Drive
Programmable/Synchronizable Fixed Frequency
VOUT Range: 0.8V to 7V
Wide VIN Range: 3.5V to 36V Operation
Very Low Dropout Operation: 99% Duty Cycle
OPTI-LOOP™ Compensation Minimizes COUT
±1% Output Voltage Accuracy
Power Good Output Voltage Monitor
Internal Current Foldback
Output Overvoltage Crowbar Protection
Latched Short-Circuit Shutdown Timer with Defeat Option
Optional Programmable Soft-Start
Remote Output Voltage Sense
Logic Controlled Micropower Shutdown: IQ < 25μA
Available in 16-Lead Narrow SSOP and SO Packages
Notebook and Palmtop Computers, PDAs
Power Supply for Mobile Pentium® III Processor with SpeedStep™ Technology
Cellular Telephones and Wireless Modems
| 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) |
|---|---|---|---|---|
| LTC1735CGN-1 | SSOP-16 | C | $3.80 | $3.25 |
| LTC1735CGN-1#PBF | SSOP-16 | C | $3.80 | $3.25 |
| LTC1735CGN-1#TR | SSOP-16 | C | $3.31 | |
| LTC1735CGN-1#TRPBF | SSOP-16 | C | $3.31 | |
| LTC1735CS-1 | SO-16 | C | $3.65 | $3.10 |
| LTC1735CS-1#PBF | SO-16 | C | $3.65 | $3.10 |
| LTC1735CS-1#TR | SO-16 | C | $3.16 | |
| LTC1735CS-1#TRPBF | SO-16 | C | $3.16 | |
| LTC1735IGN-1 | SSOP-16 | I | $5.05 | $4.25 |
| LTC1735IGN-1#PBF | SSOP-16 | I | $5.05 | $4.25 |
| LTC1735IGN-1#TR | SSOP-16 | I | $4.31 | |
| LTC1735IGN-1#TRPBF | SSOP-16 | I | $4.31 | |
| LTC1735IS-1 | SO-16 | I | $4.90 | $4.05 |
| LTC1735IS-1#PBF | SO-16 | I | $4.90 | $4.05 |
| LTC1735IS-1#TR | SO-16 | I | $4.11 | |
| LTC1735IS-1#TRPBF | SO-16 | I | $4.11 |
