TPS27082L Datasheet, PDF (1/19 Pages) Texas Instruments – 1.2V - 8V, 3A PFET Load Switch with Adjustable Slew Rate, Fast Transient Isolation and Hysteretic Control

TPS27082L
www.ti.com
SLVSBR5 – DECEMBER 2012
1.2V - 8V, 3A PFET Load Switch with Adjustable Slew Rate, Fast Transient Isolation and
Hysteretic Control
Check for Samples: TPS27082L
FEATURES
1
• Low ON Resistance, High Current PFET
– R_DS(ON) = 32mΩ (Typical) at V_GS = –4.5V
– R_DS(ON) = 44mΩ (Typical) at V_GS = –3.0V
– R_DS(ON) = 85mΩ (Typical) at V_GS = –1.8V
– R_DS(ON) = 97mΩ (Typical) at V_GS = –1.5V
– R_DS(ON) = 155mΩ (Typical) at V_GS = –1.2V
• Adjustable Turn-ON and Turn-OFF Slew Rate
– 10µsec Default Minimum Output Rise Time
at VIN=5V
• Adjustable Turn-ON and Turn-OFF Slew Rate
• Supports a Wide Range of VIN 1.2V up to 8V
• Excellent OFF Isolation Even Under Fast Input
Transients
• 1.0V up to 8V NMOS Control Logic Interface
With Adjustable Hystersis
• Fully Protected Against ESD (All Pins)
– HBM 2kV, CDM 500V
• Very Low ON-state Quiescent Current (Down
to 1.2µA)
• Very Low OFF-state Leakage Current (Typ
100nA)
• Available in 2.9mm x 1.6mm x 0.75mm SOT-23
(DDC) Package
APPLICATIONS
• High Side Load Switch
• Inrush-current Control
• Power Sequencing and Control
• Stand-by Power Isolation
• Portable Power Switch
DESCRIPTION
The TPS27082L IC is a high side load switch that
integrates a Power PFET and a control circuit in a
tiny TSOT-23 package. TPS27082L requires very low
ON-state quiescent current and offers very low OFF-
state leakage thus optimizing system power
efficiency.
TPS27082L ON/OFF logic interface features
hysteresis, thus providing a robust logic interface
even under very noisy operating conditions.
TPS27082L ON/OFF interface supports direct
interfacing to low voltage GPIOs down to 1V. The
TPS27082L level shifts ON/OFF logic signal to VIN
levels without requiring an external level shifter.
TPS27082L features a novel OFF isolation circuit that
prevents PMOS from turning ON in applications that
may have fast transients, at the VIN pin when the
load switch is in the OFF-state.
VIN
(4)
R1
ESD
TPS27082L
Q1
(2, 3)
ESD
VOUT
C1
R1/C1 ⁽⁶⁾
ESD
ON/OFF
Q2
Logic &
(5)
Control
ESD
RS=12.5kΩ
(1)
GND
Simplified Block & Application Diagram
TPS27082LDDC
(TOP VIEW)
1 GND
R1/C1 6
2 VOUT
ON/OFF 5
3 VOUT
VIN 4
2.9mm x 1.6mm x 0.75mm
TSOT-23(DDC)
TPS27082L Package (DDC)
Component Table (Typical Application)
Component
Description
R1
Level Shift Pull-up Resistor
C1
Optional ⁽¹⁾
(1) Required for load inrush current (slew rate) control.
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2012, Texas Instruments Incorporated