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Product details

Parameters

Iout (Max) (A) 0.2 Vin (Min) (V) 2.2 Vin (Max) (V) 5.5 Vout (Min) (V) 2.6 Vout (Max) (V) 3.3 Soft start Fixed Features Enable, Light Load Efficiency, Output Discharge Operating temperature range (C) -40 to 85 Iq (Typ) (mA) 0.00036 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 1200 Switching frequency (Min) (kHz) 700 Switching frequency (Typ) (kHz) 1700 Duty cycle (Max) (%) 100 Topology Buck, Synchronous Buck open-in-new Find other Buck modules (integrated inductor)

Features

  • 360-nA Typical Quiescent Current
  • Up to 90% Efficiency at 10-µA Output Current
  • Pin-Selectable Output Voltages in 100-mV Steps
  • Integrated Slew Rate Controlled Load Switch
  • Up to 200-mA Output Current
  • Input Voltage Range VIN from 2.2 V to 5.5 V
  • RF Friendly DCS-Control™
  • Low Output Voltage Ripple
  • Automatic Transition to No Ripple 100% Mode
  • Discharge Function on VOUT and LOAD
  • Sub 1.1-mm Profile Solution
  • Total Solution Size < 6.7mm2
  • Small 2.3 mm × 2.9 mm MicroSIP™ Package

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Description

The TPS82740 is the industry’s first step-down converter module featuring typically 360-nA quiescent current consumption. It is a complete MicroSIPTM DC/DC step-down power solution intended for ultra low-power applications. The module includes the switching regulator, inductor and input/output capacitors. The integration of all required passive components enables a tiny solution size of only 6.7 mm2.

This new DCS-Control™ based device extends the light load efficiency range below 10-µA load currents. It supports output currents up to 200 mA.

The device operates from rechargeable Li-Ion batteries, Li-primary battery chemistries such as Li-SOCl2, Li-MnO2 and two or three cell alkaline batteries. The input voltage range up to 5.5 V also allows operation from an USB port and thin-film solar modules.

The output voltage is user selectable by three voltage select pins (VSEL), within a range from 1.8 V to 2.5 V (TPS82740A) and 2.6 V to 3.3 V (TPS82740B) in 100-mV steps. The TPS82740 features low output voltage ripple and low noise. Once the battery voltage comes close to the output voltage (close to 100% duty cycle), the device enters no ripple 100% mode operation preventing an increase of output voltage ripple. In this case the device stops switching and the output is connected to the input voltage.

The integrated slew rate controlled load switch with a typical ON-resistance of 0.6Ω distributes the selected output voltage to a temporarily used sub-system.

The TPS82740 is available in a small 9-bump 6.7 mm2 MicroSiP™ package.

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Technical documentation

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$49.00
Description

The TPS82740AEVM-617 is designed to help the user easily evaluate and test the operation and functionality of the Fully Integrated TPS82740A Power Module. The EVM converts a 2.2-V to 5.5-V input voltage to a regulated output voltage that is set between 1.8 V and 2.5 V at up to 200 mA. The (...)

Features
  • 360 nA Iq
  • Integrated Load Switch
  • 2.2V to 5.5V Input Voltage Range
  • 200mA Output Current
  • Fully Integrated MicroSIP™ Module

Design tools & simulation

SIMULATION MODELS Download
SLVMAB3A.ZIP (139 KB) - PSpice Model
SIMULATION MODELS Download
SLVMAI1A.TSC (122 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SLVMAI2A.TSC (128 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SLVMDB4.TSC (249 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SLVMDB5.TSC (222 KB) - TINA-TI Spice Model

CAD/CAE symbols

Package Pins Download
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Ordering & quality

Support & training

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