The TPS43000 is a high-frequency, voltage-mode, synchronous PWM controller that can be used in buck, boost, SEPIC, or flyback topologies. This highly flexible, full-featured controller is designed to drive a pair of external MOSFETs (one N-channel and one P-channel), enabling it for use with a wide range of output voltages and power levels. With an automatic PFM mode, a shutdown current of less than 1 uA, a sleep-mode current of less than 100 uA and a full operating current of less than 2 mA at 1 MHz, it is ideal for building highly efficient, dc-to-dc converters.

The TPS43000 operates over a wide input voltage range of 1.8 V to 9.0 V. Typical power sources are distributed power systems, two to four nickel or alkaline batteries, or one to two lithium-ion cells. It can be used to generate regulated output voltages from as low as 0.8 V to 8 V or higher. It operates either in a fixed-frequency mode, where the user programs the frequency (up to 2 MHz), or in an automatic PFM mode. In the automatic mode, the controller goes to sleep when the inductor current goes discontinuous, and wakes up when the output voltage has fallen by 2%. In this hysteretic mode of operation, very high efficiency can be maintained over a very wide range of load current. The device can also be synchronized to an external clock source using the dual function SYNC/SD input pin.

The TPS43000 features a selectable two-level current-limit circuit which senses the voltage drop across the energizing MOSFET. The user can select either pulse-by-pulse current limiting or hiccup mode overcurrent protection. The TPS43000 also features a low-power (LP) mode (which reduces gate charge losses in the N-channel MOSFET at high input/output voltages), undervoltage lockout, and soft-start. The TPS43000 is available in a 16-pin TSSOP (PW) package.

• High-Frequency (2-MHz) Voltage Mode PWM Controller
• 1.8-V to 9.0-V Input Voltage Range
• 0.8-V to 8.0-V Output Voltage Range (Higher in Non-Synchronous Boost Topology)
• High-Efficiency Buck, Boost, SEPIC or Flyback (Buck-Boost) Topology
• Synchronous Rectification for High-Efficiency
• Drives External MOSFETs for High-Current Applications
• Synchronizable Fixed-Frequency PWM or Automatic Pulsed Frequency Modulation (PFM) Mode
• Built-In Soft-Start
• User Programmable Discontinuous or Continuous Conduction Mode
• Selectable Pulse-by-Pulse Current Limiting or Hiccup Mode Protection
• APPLICATIONS
  • Networking Equipment
  • Servers
  • Base Stations
  • Cellular Telephones
  • Satellite Telephones
  • GPS Devices
  • Digital Still and Handheld Cameras
  • Personal Digital Assistants (PDAs)

• Vin (Min) (V)
• 1.8
• Vin (Max) (V)
• 9
• Vout (Min) (V)
• 0.8
• Vout (Max) (V)
• 8
• Regulated outputs (#)
• 1
• Switching frequency (Min) (kHz)
• 250
• Switching frequency (Max) (kHz)
• 2000
• Iq (Typ) (mA)
• 1
• Features
• Enable, Frequency Synchronization, Light Load Efficiency
• Duty cycle (Max) (%)
• 100
• Rating
• Catalog

TPS43000的完整型号有：TPS43000PW、TPS43000PWR，以下是这些产品的关键参数及官网采购报价：

TPS43000PW，工作温度：-40 to 85，封装：TSSOP (PW)-16，包装数量MPQ：90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TPS43000PW的批量USD价格：1.82（1000+）

TPS43000PWR，工作温度：-40 to 85，封装：TSSOP (PW)-16，包装数量MPQ：2000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TPS43000PWR的批量USD价格：1.517（1000+）

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