TPS22970 Datasheet, PDF (1/22 Pages) Texas Instruments – 3.6-V, 4-A, 5.3-m(ohm) On-Resistance Load Switch

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TPS22970 3.6-V, 4-A, 5.3-mΩ On-Resistance Load Switch
TPS22970
SLVSDF2 – MAY 2017
1 Features
•1 Input Voltage Range (V_IN): 0.65 V to 3.6 V
• On-Resistance
– R_ON = 5.3 mΩ (Typical) at V_IN ≥ 1.8 V
– R_ON = 5.8 mΩ (Typical) at V_IN = 1.05 V
– R_ON = 7.5 mΩ (Typical) at V_IN = 0.65 V
• Maximum Continuous Switch Current (I_MAX): 4 A
• ON State (I_Q): 35 µA (Typical) at V_IN = 3.6 V
• OFF State (I_SD): 1 µA (Typical) at V_IN = 3.6 V
• Controlled Slew Rate to Avoid Inrush Current
• 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 TPS22970 is a small, space-saving load switch
with controlled turn on to reduce inrush current. The
device contains an N-channel MOSFET that can
operate over an input voltage range of 0.65 V to 3.6
V and pulsed switch currents up to 4 A. An integrated
charge pump biases the NMOS switch in order to
achieve a minimum switch ON resistance (r_ON). The
switch is controlled by an on and off input (ON),
which is capable of interfacing directly with low-
voltage control signals.
The TPS22970 is capable of thermal shutdown when
the junction temperature is above the threshold,
turning the switch off. The switch turns on again when
the junction temperature stabilizes to a safe range.
The TPS22970 also offers an integrated 150-Ω
onchip load resistor for quick output discharge when
the switch is turned off, which insures that the output
is not left floating.
The TPS22970 has an internally controlled rise time
in order to reduce inrush current. The TPS22970 is
available in an ultra-small, space saving 8-pin WCSP
package and is characterized for operation over the
free-air temperature range of –40°C to +105°C.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS22970YZPT
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
C_IN
ON
OFF
V_IN
V_OUT
V_IN
V_OUT
V_IN
ON
TPS22970
V_OUT
GND
C_L
R_L
GND
Copyright © 2017, Texas Instruments Incorporated
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. ADVANCE INFORMATION for pre-production products; subject to
change without notice.