TPS62420 具有 1 线接口、采用 QFN 封装的双路可调节 600mA 和 1000mA、2.25MHz 步降转换器 | 德州仪器 TI.com.cn

TPS62420
此产品已上市,且可供购买。 可提供某些产品的较新替代品。
具有 1 线接口、采用 QFN 封装的双路可调节 600mA 和 1000mA、2.25MHz 步降转换器

 

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描述

The TPS6242x device is a synchronous dual step-down DC–DC converter. It provides two independent output voltage rails powered by 1-cell Li-Ion or 3-cell NiMH/NiCD batteries. The device is also suitable to operate from a standard 3.3-V or 5-V voltage rail.

With an input voltage range of 2.5 V to 6 V, the TPS6242x is ideal for battery-powered portable applications like smart phones, PDAs, and other portable equipment.

With the EasyScale™ serial interface the output voltages can be modified during operation. It therefore supports dynamic voltage scaling for low power DSP and processors.

The TPS6242x operates at 2.25-MHz fixed switching frequency and enter the power-save mode operation at light load currents to maintain high efficiency over the entire load current range. For low-noise applications the devices can be forced into fixed-frequency PWM mode by pulling the MODE/DATA pin High. In the shutdown mode, the current consumption is reduced to 1.2 µA. The device allows the use of small inductors and capacitors to achieve a small solution size.

The TPS6242x operates over a free-air temperature range of –40°C to 85°C. It is available in a 10-pin leadless package (3 mm × 3 mm VSON)

特性

  • High Efficiency up to 95%
  • VIN Range from 2.5 V to 6 V
  • 2.25-MHz Fixed Frequency Operation
  • Output Current 600 mA and 1000 mA
  • Adjustable Output Voltage from 0.6 V to VIN
  • Pin Selectable Output Voltage Supports Simple
    Dynamic VoltageScaling
  • Optional EasyScale One-Pin Serial Interface for
    Dynamic Output Voltage Adjustment
  • Power-Save Mode at Light Load Currents
  • 180° Out of Phase Operation
  • Output Voltage Accuracy in PWM Mode ±1%
  • Typical 32-µA Quiescent Current for both
    Converters
  • 100% Duty Cycle for Lowest Dropout
  • Available in a 10-Pin VSON (3 mm × 3 mm)

WEBENCH® Designer TPS62420

  最小   最大 范围
Vin1  V 2.50 to 6.00V
Vout1  V 0.6 to 6V
Iout1  A ≤ 0.60A
 
Vin2  V 2.50 to 6.00V
Vout2  V 0.6 to 6V
Iout2  A ≤ 1.00A
 
环境温度  °C -40.00 to 125.00°C

参数

与其它产品相比 降压转换器(集成开关) 邮件 下载到电子表格中
Part number 立即下单 Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Iout (Max) (A) Regulated outputs (#) Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Control mode Duty cycle (Max) (%) Operating temperature range (C) Rating Package Group Type Package size: mm2:W x L (PKG)
TPS62420 立即下单 2.5     6     0.6     6     0.6     2     2000     2500     0.032     Enable
Forced PWM
Light Load Efficiency
Synchronous Rectification
Adaptive/Dynamic Voltage Scaling    
Voltage Mode     100     -40 to 85     Catalog     VSON | 10     Converter     10VSON: 9 mm2: 3 x 3 (VSON | 10)    
LM26480-Q1 立即下单 2.8     5.5     1     3.3     1.5     4     2000     2500     0.033     Enable
Light Load Efficiency
Power Good
Synchronous Rectification
UVLO Fixed    
Voltage Mode     100     -40 to 125
-40 to 85    
Automotive     WQFN | 24     Converter     24WQFN: 16 mm2: 4 x 4 (WQFN | 24)    
TPS62400 立即下单 2.5     6     0.6     6     0.4     2     2000     2500     0.032     Enable
Forced PWM
Light Load Efficiency
Synchronous Rectification
Adaptive/Dynamic Voltage Scaling    
Voltage Mode     100     -40 to 85     Catalog     VSON | 10     Converter     10VSON: 9 mm2: 3 x 3 (VSON | 10)    
TPS62401 立即下单 2.5     6     1.1     1.575     0.4     2     2000     2500     0.032     Enable
Forced PWM
Light Load Efficiency
Synchronous Rectification
Adaptive/Dynamic Voltage Scaling    
Voltage Mode     100     -40 to 85     Catalog     VSON | 10     Converter     10VSON: 9 mm2: 3 x 3 (VSON | 10)    
TPS62402 立即下单 2.5     6     1.2     1.8     0.4     2     2000     2500