The TPS6735 is a fixed negative 5-V output inverting dc/dc converter capable of delivering 200 mA from inputs as low as 4.5 V. The only external components required are an inductor, an output filter capacitor, an input filter capacitor, a reference filter capacitor, and a Schottky rectifier. An enable input is provided to shut down the inverter when a -5-V output is not needed. The typical supply current is 1.9 mA at no-load and is further reduced to 1-uA when the enable input is low.

The TPS6735 is a 160-kHz current-mode pulse-width-modulation (PWM) controller with a p-channel MOSFET power switch. The gate drive uses the -5-V output to reduce the die area needed to realize the 0.4- MOSFET. Soft start is accomplished with the addition of one small capacitor at SS. A 1.22-V reference is available for external loads up to 125 uA.

The TPS6735 is attractive for board-level dc/dc conversion in computer peripherals and in battery-powered equipment requiring high efficiency and low supply current.

The TPS6735 is available in 8-pin DIP and SOIC packages and operates over a free-air temperature range of -40°C to 85°C.

• Negative 5-V 200-mA Output (VCC >= 4.5 V)
• \x95 4-V to 6.2-V Input Operating Range
• \x95 78% Typical Efficiency
• \x95 160-kHz Fixed-Frequency Current-Mode PWM Controller
• \x95 EN Input Inhibits Operation and Reduces Supply Current to 1 uA
• \x95 Soft Start
• \x95 8-Pin SOIC and DIP Packages
• \x95 -40°C to 85°C Free-Air Temperature Range
• \x95 Pin-for-Pin Compatible with MAX735

• Topology
• Inverting
• Vin (Min) (V)
• 4
• Vin (Max) (V)
• 6.2
• Vout (Max) (V)
• -5
• Vout (Min) (V)
• -5
• Duty cycle (Max) (%)
• 100
• Features
• Enable
• Switch current limit (Typ) (A)
• 2
• Switching frequency (Min) (kHz)
• 160
• Switching frequency (Max) (kHz)
• 160
• Iq (Typ) (mA)
• 1.9
• Iout (Max) (A)
• 0.2
• Rating
• Catalog

TPS6735的完整型号有：TPS6735ID、TPS6735IDR、TPS6735IP，以下是这些产品的关键参数及官网采购报价：

TPS6735ID，工作温度：-40 to 85，封装：SOIC (D)-8，包装数量MPQ：75个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网TPS6735ID的批量USD价格：1.966（1000+）

TPS6735IDR，工作温度：-40 to 85，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网TPS6735IDR的批量USD价格：1.638（1000+）

TPS6735IP，工作温度：-40 to 85，封装：PDIP (P)-8，包装数量MPQ：50个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：NIPDAU，TI官网TPS6735IP的批量USD价格：2.211（1000+）

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