TPS82740A_15 Datasheet, PDF (1/30 Pages) Texas Instruments – TPS82740x 360nA IQ MicroSIPTM Step Down Converter Module for Low Power Applications

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TPS82740A, TPS82740B
SLVSCE3A – JUNE 2014 – REVISED JUNE 2014
TPS82740x 360nA I_Q MicroSIP^TM Step Down Converter Module for Low Power
Applications
1 Features
•1 360nA Typical Quiescent Current
• Up to 90% Efficiency at 10µA Output Current
• Pin Selectable Output Voltages in 100mV Steps
• Integrated Slew Rate Controlled Load Switch
• Up to 200mA Output Current
• Input Voltage Range V_IN from 2.2V to 5.5V
• 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 x 2.9 mm MicroSIP™ Package
2 Applications
• Bluetooth^® Low Energy, RF4CE, Zigbee
• Wearable Electronics
• Energy Harvesting
3 Description
The TPS82740 is the industry's first step down
converter module featuring typically 360nA quiescent
current consumption. It is a complete MicroSIP^TM
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
6.7mm².
This new DCS-Control™ based device extends the
light load efficiency range below 10µA load currents.
It supports output currents up to 200mA.
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 5.5V 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 1.8V to 2.5V
(TPS82740A) and 2.6V to 3.3V (TPS82740B) in
100mV 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 6.7mm²
MicroSiP^TM package.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS82740A
µSIP
2.30 mm × 2.90 mm
TPS82740B
µSIP
2.30 mm × 2.90 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Typical Application
V_IN
2.2 V to 5.5 V
ENABLE
VSEL1
VSEL2
VSEL3
TPS82740
DC/DC Converter
L
VIN
SW
CIN
VOUT
GND
EN
VSEL1
VSEL2
VSEL3
LOAD
CTRL
GND
COUT
V_OUT
up to 200mA
Switched Supply
RON = 0.6Ω
Control for
Switched
Supply Rail
TPS82740B
TPS82740 extends
light load efficiency range
down to 10mA output current
Current
DCS-Control^TM topology
V = 3.6V
IN
V = 3.3V
OUT
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.