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TPS5405D, in 3D

TPS5405D

Texas Instruments

-40℃~+85℃@(TA) 1 1.1MHz 100uA 2A 5V 6.5V~28V Buck Buck Built-in Fixed No SOIC-8 DC-DC Converters ROHS

Extended
DatasheetJLCPCBLCSCti/TPS5405D
Category
DC DC Converters
Package
SOIC-8
Pins
8

Overview

The TPS5405D is a DC DC Converter made by Texas Instruments in a SOIC-8 package with 8 pins. -40℃~+85℃@(TA) 1 1.1MHz 100uA 2A 5V 6.5V~28V Buck Buck Built-in Fixed No SOIC-8 DC-DC Converters ROHS.

PCBKit's library has its KiCad symbol (Celestial_Power_Switchmode:TI TPS5405D, from Altium's library) and its footprint (Package_SO:SOIC-8_3.9x4.9mm_P1.27mm, from KiCad's library), ready for a KiCad board. 8,003 are in stock at JLCPCB (part C488409). 1 open-source board in 1 repository on GitHub use it.

Symbol

BOOT1LX8ROSC3VIN2VSENSE5COMP6SS4GND7
Celestial_Power_Switchmode:TI TPS5405DFrom Altium's library

Footprint

12345678
Package_SO:SOIC-8_3.9x4.9mm_P1.27mmFrom KiCad's library

From the datasheet

16
Supply, least
6.5 V · VIN, recommended operating min · p. 4
Supply, most
28 V · VIN, recommended operating max · p. 4
Supply, absolute maximum
30 V · VIN, absolute max · p. 4
Works from
-40 °C · Ambient temperature min · p. 4
Works up to
85 °C · Ambient temperature max · p. 4
Junction, hottest
125 °C · Operating junction temperature absolute max · p. 4
Takes working
100 µA · VIN, typical non-switching quiescent current under no load · p. 8
Takes asleep
1 µA · VIN, typical disabled supply current · p. 8
Gives
2 A · Continuous output current max · p. 8
Current limit
2.5 A · Typical peak inductor current limit, VIN = 12 V · p. 5
Output
5 V · Typical fixed output voltage, VIN = 12 V · p. 5
Switches at
120 kHz · Typical switching frequency, ROSC = OPEN · p. 5
Switches at
300 kHz · Typical switching frequency, ROSC = 85.5 kΩ · p. 5
Junction to air (D)
116.7 K/W · Junction-to-ambient thermal resistance · p. 4
Junction to case (D)
62.4 K/W · Junction-to-case top thermal resistance · p. 4
Junction to board (D)
57 K/W · Junction-to-board thermal resistance · p. 4

What it is and has

7
Topology
Non-synchronous buck converter with integrated high-side N-channel MOSFET · p. 8
Control
Peak current-mode control · p. 1
Protection
Cycle-by-cycle overcurrent protection · p. 1
Soft start
External · p. 1
Package
SOIC8 · p. 1
EMI reduction
Frequency spread spectrum · p. 1
Protection
Thermal shutdown at 165°C · p. 12

Around it

6
cap 0.1-µF
between BOOT and LX; Required bootstrap capacitor; page 9 recommends ceramic X7R or X5R. · p. 3
res 85.5-kΩ
between ROSC and GND; For operation at 300 kHz. · p. 8
cap no more than 27 nF
between SS and GND; External slow start capacitor; set slow start time between 1 ms and 10 ms. · p. 9
ind 4.7 µH
between LX and VOUT; Standard inductor chosen for the design example. · p. 11
cap 22-µF
between VOUT and GND; Design example: one 6.3-V X7R ceramic capacitor with 3-mΩ ESR. · p. 11
cap 10-µF
between VIN and GND; Minimum; X7R/X5R ceramic, as close as physically possible to the input pins. · p. 11

Specifications

34
ParameterConditionsAs printedPage
Voltage range at VIN, LXOver operating free-air temperature rangemin -0.3 · max 30 V4
Voltage range at LX (maximum withstand voltage transient < 20 ns)Maximum withstand voltage transient < 20 nsmin -5 · max 30 V4
Voltage from BOOT to LXOver operating free-air temperature rangemin -0.3 · max 7 V4
Voltage at VSENSEOver operating free-air temperature rangemin -0.3 · max 7 V4
Voltage at SSOver operating free-air temperature rangemin -0.3 · max 3 V4
Voltage at ROSCOver operating free-air temperature rangemin -0.3 · max 3 V4
Voltage at COMPOver operating free-air temperature rangemin -0.3 · max 3 V4
Voltage at GNDOver operating free-air temperature rangemin -0.3 · max 0.3 V4
Operating junction temperature range TJmin -40 · max 125 °C4
Storage temperature range TSTGmin -55 · max 150 °C4
Input operating voltage VINOver operating free-air temperature rangemin 6.5 · max 28 V4
Ambient temperature TAmin -40 · max 85 °C4
Junction-to-ambient thermal resistance θJATPS5405, D, 8 PINStyp 116.7 °C/W4
Junction-to-case (top) thermal resistance θJCtopTPS5405, D, 8 PINStyp 62.4 °C/W4
Junction-to-board thermal resistance θJBTPS5405, D, 8 PINStyp 57 °C/W4
Junction-to-top characterization parameter ψJTTPS5405, D, 8 PINStyp 14.5 °C/W4
Junction-to-board characterization parameter ψJBTPS5405, D, 8 PINStyp 56.5 °C/W4
Input Voltage range VINVIN1 and VIN2; TA = -40°C to 125°Cmin 6.5 · max 28 V5
Non switching quiescent power supply current IDDQ_nswVFB1 = VFB2 = 900 mV, LOW_P = high; TA = -40°C to 125°C, VIN = 12 Vtyp 100 uA5
VIN under voltage lockout UVLORising VIN; TA = -40°C to 125°Ctyp 3.5 V5
VIN under voltage lockout UVLOHysteresis; TA = -40°C to 125°Ctyp 200 mV5
Regulated output voltage VSENSEVIN = 12 V; TA = -40°C to 125°Cmin 4.85 · typ 5 · max 5.15 V5
Error amplifier trans-conductance Gm_EA-2 uA < ICOMP < 2 uA, VCOMP = 1 V; TA = -40°C to 125°C, VIN = 12 Vtyp 92 us5
COMP voltage to inductor current Gm Gm_SRCVIN = 12 V; TA = -40°C to 125°Ctyp 9 A/V5
Pulse skipping mode switch current threshold IthTA = -40°C to 125°C, VIN = 12 Vtyp 300 mA5
Charge current ISSTA = -40°C to 125°C, VIN = 12 Vtyp 2 uA5
Switching frequency range fSW_BKSet by external resistor ROSC; TA = -40°C to 125°C, VIN = 12 Vmin 50 · max 1100 kHz5
Programmable frequency fSWROSC = OPEN; TA = -40°C to 125°C, VIN = 12 Vtyp 120 kHz5
Programmable frequency fSWROSC = 85.5 kΩ; TA = -40°C to 125°C, VIN = 12 Vtyp 300 kHz5
Minimum on time tmin_onVIN = 12 V, TA = 25°Ctyp 200 ns5
Maximum duty ratio DmaxVIN = 12 V; TA = -40°C to 125°Ctyp 93 %5
Peak inductor current limit ILIMITVIN = 12 V; TA = -40°C to 125°Ctyp 2.5 A5
On resistance of high side FET Rdson_HSVIN = 12 V; TA = -40°C to 125°Ctyp 120 · max 240 mΩ5
Thermal protection trip point TTRIPRising temperature; VIN = 12 Vtyp 165 °C5

Pins, by the datasheet

8
1 BOOT
A 0.1-uF bootstrap capacitor is required between BOOT and LX. · p. 3
2 VIN
Input supply voltage, 6.5 V to 28 V. · p. 3
3 ROSC
Connect a resistor to set switching frequency; leave open for 120-kHz switching frequency. · p. 3
4 SS
Soft start pin; an external capacitor sets the output rise time. · p. 3
5 VSENSE
Output voltage feedback pin. · p. 3
6 COMP
Error amplifier output and input to the PWM comparator; connect frequency compensation components. · p. 3
7 GND
Ground. · p. 3
8 LX
Switching node to external inductor. · p. 3

Ordering codes, by the datasheet

6
TPS5405DR
SOIC (D), 8 pins · 2500 units, LARGE T&R; NIPDAU finish; operating temperature -40 to 125°C in packaging addendum · p. 13
TPS5405DR.A
SOIC (D), 8 pins · Same listed specifications and packing as TPS5405DR; suffix difference unspecified · p. 13
TPS5405DR.B
SOIC (D), 8 pins · Same listed specifications and packing as TPS5405DR; suffix difference unspecified · p. 13
TPS5405DRG4
SOIC (D), 8 pins · Same listed specifications and packing as TPS5405DR; suffix difference unspecified · p. 13
TPS5405DRG4.A
SOIC (D), 8 pins · Same listed specifications and packing as TPS5405DR; suffix difference unspecified · p. 13
TPS5405DRG4.B
SOIC (D), 8 pins · Same listed specifications and packing as TPS5405DR; suffix difference unspecified · p. 13

Parameters

20
Current Limit
2.5A
Features
Overcurrent Protection
Frequency - Switching
1.1MHz
Function
Step-down type
Junction Temperature(Max)
125℃
Number of Outputs
1
Operating Temperature
-40℃~+85℃
Output Current
2A
Output Type
Fixed
Output Voltage
5V
Quiescent Current
100uA
Standby Current
1uA
Switch tube (built-in/external)
Built-in
Synchronous Rectifier
No
Thermal Resistance(Junction to Ambient)
116.7℃/W
Thermal Resistance(Junction to Board)
57℃/W
Thermal Resistance(Junction to Case)
62.4℃/W
Topology
Buck
Voltage - Supply
6.5V~28V
Voltage - Supply(Absolute Max)
30V

Order codes

1

Pinout

8
The pins of the TPS5405D
PinNameType
1BOOTPassive
2VINPassive
3ROSCPassive
4SSPassive
5VSENSEPassive
6COMPPassive
7GNDPassive
8LXPassive

Open-source boards using it

All 1
  • 4 layersPulser3, the printed circuit board in 3D

    Pulser3

    aaritkoundinya/Pulse

    After creation, open KiCad and work in boards/ /.

    48 parts

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Questions

Is there a KiCad symbol and footprint for the TPS5405D?

Yes. The symbol is Celestial_Power_Switchmode:TI TPS5405D and the footprint Package_SO:SOIC-8_3.9x4.9mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the TPS5405D?

SOIC-8, with 8 pins. Its footprint is drawn on this page.

Where is the TPS5405D datasheet?

Texas Instruments publishes it: the Datasheet link on this page opens it.

Where can I order the TPS5405D?

JLCPCB lists it as part C488409, with 8,003 in stock; the sellers' links on this page open their listings.

What can replace the TPS5405D?

Parts like it in the library: the XL1509-5.0E1 by XLSEMI, the LM2576D-5.0RG by HANSCHIP semiconductor, the CN5208 by ShangHai Consonance Elec and the XL2012E1 by XLSEMI. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the TPS5405D?

1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.

Parts like it

8