TPS62736_15 Datasheet, PDF (1/37 Pages) Texas Instruments – TPS6273x Programmable Output Voltage Ultra-Low Power Buck Converter With Up to 50 mA / 200 mA Output Current

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TPS62736, TPS62737
SLVSBO4C – OCTOBER 2012 – REVISED DECEMBER 2014
TPS6273x Programmable Output Voltage Ultra-Low Power Buck Converter
With Up to 50 mA / 200 mA Output Current
1 Features
•1 Industry's Highest Efficiency at Low Output
Currents: > 90% With I_OUT = 15 µA
• Ultra-Low Power Buck Converter
– TPS62736 Optimized for 50-mA Output
Current
– TPS62737 Optimized for 200-mA Output
Current
– 1.3-V to 5-V Resistor Programmable Output
Voltage Range
– 2-V to 5.5-V Input Operating Range
– 380-nA and 375-nA Quiescent Current During
Active Operation for TPS62736 and TPS62737
– 10-nA Quiescent Current During Ship Mode
Operation
– 2% Voltage Regulation Accuracy
• 100% Duty Cycle (Pass Mode)
• EN1 and EN2 Control
– Two Power-Off States:
1. Shipmode (Full Power-Off State)
2. Standby Mode Includes VIN_OK Indication
• Input Power-Good Indication (VIN_OK)
– Push-Pull Driver
– Resistor Programmable Threshold Level
2 Applications
• Ultra-Low Power Applications
• 2-Cell and 3-Cell Alkaline-Powered Applications
• Energy Harvesting
• Solar Chargers
• Thermal Electric Generator (TEG) Harvesting
• Wireless Sensor Networks (WSN)
• Low-Power Wireless Monitoring
• Environmental Monitoring
• Bridge and Structural Health Monitoring (SHM)
• Smart Building Controls
• Portable and Wearable Health Devices
• Entertainment System Remote Controls
3 Description
The TPS6273x family provides a highly integrated
ultra low power buck converter solution that is well
suited for meeting the special needs of ultra-low
power applications such as energy harvesting. The
TPS6273x provides the system with an externally
programmable regulated supply to preserve the
overall efficiency of the power-management stage
compared to a linear step-down converter. This
regulator is intended to step-down the voltage from
an energy storage element such as a battery or super
capacitor to supply the rail to low-voltage electronics.
The regulated output has been optimized to provide
high efficiency across low-output currents (<10 µA) to
high currents (200 mA).
The TPS6273x integrates an optimized hysteretic
controller for low-power applications. The internal
circuitry uses a time-based sampling system to
reduce the average quiescent current.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS6273x
VQFN (14)
3.50 mm × 3.50 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
> 90% at
IOUT = 15 2A
V_IN
IN
SW
OUT
4.7F _TPS62736
L
10 2H
22 2F
V_OUT
Efficiency vs Output Current
100
TPS62736
95
90
85
80
75
70
65
60
55
0.001
0.01
Test Conditions:
V_O = 2.5V, V_IN = 3V,
T_A = 25^oC, L = 10mH (Toko DFE252012C)
0.1
1
Iout (mA)
10
100
G000
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. UNLESS OTHERWISE NOTED, this document contains PRODUCTION
DATA.