TPS22971 Datasheet, PDF (1/20 Pages) Texas Instruments – 3.6-V, 3-A, 7.5-m(ohm) On-Resistance Load Switch With Adjustable Fast Turnon and Power Good

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TPS22971
SLVSDK7 – APRIL 2017
TPS22971 3.6-V, 3-A, 7.5-mΩ On-Resistance Load Switch With Adjustable Fast Turnon
and Power Good
1 Features
•1 Input Voltage Range (V_IN): 0.65 V to 3.6 V
• On-Resistance
– R_ON = 7.5 mΩ (typical) at V_IN ≥ 1.8 V
– R_ON = 8 mΩ (typical) at V_IN = 1.05 V
– R_ON = 10 mΩ (typical) at V_IN = 0.65 V
• Maximum Continuous Switch Current (I_MAX): 3 A
• ON State (I_Q): 35 µA (typical)
• OFF State (I_SD): 1 µA (typical)
• Controlled and Adjustable Slew Rate through CT
Pin
• Power Good (PG) Indicator After Switch Turn ON
• Low Threshold Enable (ON) supports use of logic
as low as 0.9 V (V_IH) of Logic
• Thermal Shutdown (T_SD): T_J > 125°C
• Quick Output Discharge (QOD): 150-Ω (typical)
2 Applications
• Notebook, Tablet
• Industrial PC
• Smartphones
• Telecom
• Storage
3 Description
The TPS22971 is a space-saving single-channel load
switch with controlled and adjustable turnon slew rate
and an integrated PG indicator. The device contains
an N-channel MOSFET that can operate over a low
input voltage range of 0.65 V to 3.6 V and can
support a maximum continuous current of 3 A. A Low
on-resistance of 7.5-mΩ minimizes the power loss
and voltage drop across the load switch. The switch
is controlled by an on and off input (ON), which is
capable of interfacing directly with low-voltage control
signals.
The TPS22971 is capable of thermal shutdown to
turn off when the junction temperature is above the
recommended operating maximum. The switch turns
on again when the junction temperature lowers to a
safe range.
The TPS22971 has a 150-Ω on-chip resistor for quick
discharge of the output when switch is disabled to
avoid any unknown state caused by floating supply to
the downstream load.
The TPS22971 has an internally adjustable rise time
in order to reduce inrush current. The switch also has
integrated Power Good (PG) indicator for seamless
downstream power sequencing.
The TPS22971 is available in a 1.9-mm × 0.9-mm,
0.4-mm pin pitch, 0.5-mm height 8-pin DSBGA
package and is characterized for operation over the
temperature range of –40°C to 125°C.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS22971YZPT
DSBGA (8)
1.90 mm × 0.90 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application
Power Supply
1
CIN
CT
VIN
VOUT
VIN
VOUT
CT
PG
RPU
CL
RL
PG
ON
GND
ON
VIN
OFF
TPS22971
Copyright © 2017, Texas Instruments Incorporated
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. ADVANCE INFORMATION for pre-production products; subject to
change without notice.