TPS5100IPW集成电路（IC）的PMIC-稳压器-DCDC开关式控制器规格书PDF中文资料

TPS5100IPW属于集成电路（IC）的PMIC-稳压器-DCDC开关式控制器。由德州仪器制造生产的TPS5100IPWDC-DC 开关控制器PMIC（电源管理集成电路）DC 到 DC 开关式控制器是用于高效率电路的稳压 IC，其配置为生成高于（突升或步升）或低于（突降或步降）输入电源的输出电源电压。其他拓扑结构可能包括：降压-升压、反激、正激、Cuk、SEPIC、全桥、半桥和推挽式。这些器件不同于需要最小电压并“烧尽”多余电压的线性稳压器。

Low Voltage Operation . . . 2.5 V to 7 V

Low Power . . . 3. 5 mA

(f = 500 kHz, Duty = 50%)

Internal Undervoltage Lockout Protection

Internal Short Circuit Protection

Wide Operating Frequency . . . 50 kHz to

1 MHz

Internal Precision Reference . . . 1.25 V ±1%

(25°C)

On/Off Switch for CH1/3 Pair and Ch2 (see

Function Table)

0 to 100% Dead Time Control

Totem Pole Output Stage

Smal l Package . . . 16 Pin TSSOP

description

The TPS5100 is a triple PWM control circuit, primarily designed to compose the power supply for LCD display.

Each PWM channel has own error amplifier, PWM comparator, dead-time control and output driver. The

trimmed voltage reference, oscillator, undervoltage lockout and short circuit protection are common for all

channels.

This device includes two boost exclusive circuits (ch1,3) and a buck-boost exclusive circuit (ch2). The operating

frequency is set with external resister and capacitor, and dead time is continuously adjustable form 0% to 100%

duty cycle with resistive divider network. Soft start function can be implemented by adding a capacitor to dead

time divider network. Two dead time control inputs are assigned for ch1,3 pair and ch2 individually and each

dead time control input can be used to control on/off operation. TPS5100 can operate from 2.5 V supply voltage

and ch1,3 pair and ch2 operate with reverse phase switching each other to achieve efficient operation in low

power and battery powered system.

The TPS5100 is characterized for operation from –20°C to 85°C.