Datasheet

TPS62736
TPS62737
SLVSBO4B –OCTOBER 2012–REVISED JULY 2013 www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
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 in order 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 in order 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
utilizes a time based sampling system in order to reduce the average quiescent current.
To further assist users in the strict management of their energy budgets, the TPS6273X toggles the input power
good indicator to signal an attached microprocessor when the voltage on the input supply has dropped below a
pre-set critical level. This signal is intended to trigger the reduction of load currents to prevent the system from
entering an under-voltage condition. There are also independent enable signals to allow the system to control
whether the converter is regulating the output, only monitoring the input voltage, or shut down in an ultra-low
quiescent sleep state.
The input power good threshold and output regulator levels are programmed independently via external resistors.
All the capabilities of TPS6273X are packed into a small foot-print 14-lead 3.5mm x 3.5 mm QFN package
(RGY).
ORDERING INFORMATION
ORDERING
OUTPUT MAX OUTPUT INPUT PACKAGE
T
A
PART NO. NUMBER (TAPE QUANTITY
VOLTAGE CURRENT UVLO MARKING
AND REEL)
TPS62736RGYR 3000
Resistor
–40°C to 85°C TPS62736
(1)
50 mA 2 V TPS62736
Programmable
TPS62736RGYT 250
TPS62737RGYR 3000
Resistor
–20°C to 85°C TPS62737
(1)
200 mA 2V TPS62737
Programmable
TPS62737RGYT 250
(1) The RGY package is available in tape on reel. Add R suffix to order quantities of 3000 parts per reel, T suffix for 250 parts per reel.
ABSOLUTE MAXIMUM RATINGS
(1)
over operating free-air temperature range (unless otherwise noted)
VALUE
(2)
UNIT
MIN MAX
Input voltage range on IN, EN1, EN2, VRDIV, VIN_OK_SET,
Pin voltage –0.3 5.5 V
VOUT_SET, VIN_OK, OUT, SW,NC
TPS62736 Peak currents IN, OUT 100 mA
TPS62737 Peak currents IN, OUT 370 mA
T
J
Temperature range Operating junction temperature range –40 125 °C
T
STG
Storage temperature range –65 150 °C
Human Body Model - (HBM) 1 kV
ESD
(3)
Machine Model (MM) 150 V
Charge Device Model - (CDM) 500 V
(1) Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings
only and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating
conditions” is not implied. Exposure to absolute–maximum–rated conditions for extended periods may affect device reliability.
(2) All voltage values are with respect to VSS/ground terminal
(3) ESD testing is performed according to the respective JESD22 JEDEC standard.
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