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LM74502DDF on a board, in 3D

LM74502DDF

Texas Instruments

-40℃~+125℃ 2Ω 3.2V~65V Active High High Side Switch Overvoltage protection、Under-voltage lockout、Reverse voltage protection、Integrated charge pump TSOT-23-8 Power Distribution Switches ROHS

Extended
DatasheetJLCPCBLCSCti/LM74502DDF
Category
Power Distribution Switches
Package
TSOT-23-8
Pins
8

Overview

The LM74502DDF is a power Distribution Switche made by Texas Instruments in a TSOT-23-8 package with 8 pins. -40℃~+125℃ 2Ω 3.2V~65V Active High High Side Switch Overvoltage protection、Under-voltage lockout、Reverse voltage protection、Integrated charge pump TSOT-23-8 Power Distribution Switches ROHS.

PCBKit's library has its KiCad symbol (EasyEDA_Cloud:LM74502DDFR, from EasyEDA) and its footprint (Package_TO_SOT_SMD:TSOT-23-8, from KiCad's library), ready for a KiCad board. 2,835 are in stock at JLCPCB (part C3236215). 6 open-source boards in 5 repositories on GitHub use it.

Symbol

EN/UVLO1GND2N.C3VCAP4VS5GATE6OV7SRC8
EasyEDA_Cloud:LM74502DDFRFrom EasyEDA

Footprint

12345678
Package_TO_SOT_SMD:TSOT-23-8From KiCad's library

From the datasheet

11
Supply, least
60 V · VS, recommended operating min, including reverse polarity · p. 4
Supply, most
60 V · VS, recommended operating max · p. 4
Supply, absolute maximum
65 V · VS to GND absolute max · p. 4
Works from
-40 °C · ambient operating min · p. 1
Works up to
125 °C · ambient operating max · p. 1
Junction, hottest
150 °C · operating junction absolute max · p. 4
Takes working
45 µA · VS operating quiescent current typical · p. 5
Takes asleep
900 nA · VS shutdown current typical, EN/UVLO = 0 V · p. 5
Junction to air (DDF (SOT))
133.8 K/W · junction-to-ambient thermal resistance · p. 5
Junction to case (DDF (SOT))
72.6 K/W · junction-to-case top thermal resistance · p. 5
Junction to board (DDF (SOT))
54.5 K/W · junction-to-board thermal resistance · p. 5

What it is and has

5
Reverse input voltage rating
-65 V · p. 1
Peak gate source current
60μA · p. 1
Peak gate sink current
2.3 A · p. 1
Protection
Adjustable overvoltage and undervoltage protection · p. 1
Package
8-pin SOT-23, 2.90mm × 1.60mm · p. 1

Around it

2
cap 100-nF
between VS and GND; Input supply capacitor. · p. 3
cap 0.1 µF
between VCAP and VS; Minimum external charge pump capacitance. · p. 4

Specifications

48
ParameterConditionsAs printedPage
VS to GNDOver operating free-air temperature rangemin -65 · max 65 V4
EN/UVLO, OV to GNDV(VS) > 0 Vmin -0.3 · max 65 V4
GATE to SRCmin 0 · max 15 V4
VCAP to VSmin -0.3 · max 15 V4
Operating junction temperatureOperating lifetime is de-rated for junction temperatures greater than 125°Cmin -40 · max 150 °C4
Storage temperature Tstgmin -40 · max 150 °C4
Electrostatic discharge V(ESD)Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins; value ±2000 Vmax 2000 V4
Electrostatic discharge V(ESD)Charged device model (CDM), per ANSI/ESDA/JEDEC JS-002, all pins; value ±750 Vmax 750 V4
VS to GNDOver operating free-air temperature rangemin -60 · max 60 V4
EN/UVLO, OV, SRC to GNDOver operating free-air temperature rangemin -60 · max 60 V4
External capacitanceVSmin 22 nF4
External capacitanceVCAP to VSmin 0.1 uF4
External MOSFET max VGS ratingGATE to SRCmin 15 V4
Operating junction temperature range TJOperating lifetime is de-rated for junction temperatures greater than 125°Cmin -40 · max 150 °C4
Junction-to-ambient thermal resistance RθJALM74502, DDF (SOT), 8 PINStyp 133.8 °C/W5
Junction-to-case (top) thermal resistance RθJC(top)LM74502, DDF (SOT), 8 PINStyp 72.6 °C/W5
Junction-to-board thermal resistance RθJBLM74502, DDF (SOT), 8 PINStyp 54.5 °C/W5
Junction-to-top characterization parameter ΨJTLM74502, DDF (SOT), 8 PINStyp 4.6 °C/W5
Junction-to-board characterization parameter ΨJBLM74502, DDF (SOT), 8 PINStyp 54.2 °C/W5
Operating input voltage V(VS)min 4 · max 60 V5
VS POR Rising threshold V (VS_POR)max 3.9 V5
VS POR Falling threshold V (VS_POR)min 2.2 · typ 2.8 · max 3.1 V5
VS POR Hysteresis V(VS POR(Hys))min 0.44 · max 0.67 V5
Shutdown Supply Current I(SHDN)V(EN/UVLO) = 0 Vtyp 0.9 · max 1.5 uA5
Operating Quiescent Current I(Q)IGNDtyp 45 · max 65 uA5
VS pin leakage current during input reverse polarity I(REV)0 V ≤ V(VS) ≤ – 65 Vtyp 100 · max 150 uA5
Enable/UVLO falling threshold V(EN_UVLOF)min 1.027 · typ 1.14 · max 1.235 V5
Enable/UVLO rising threshold V(EN_UVLOR)min 1.16 · typ 1.24 · max 1.32 V5
Enable threshold voltage for low IQ shutdown V(ENF)min 0.32 · typ 0.64 · max 0.94 V5
Enable Hysteresis V(EN_Hys)min 38 · typ 90 · max 132 mV5
Enable sink current I(EN/UVLO)V(EN/UVLO) = 12 Vtyp 3 · max 5 uA5
Peak source current I(GATE)V(GATE) – V(SRC) = 5 V; LM74502min 40 · typ 60 · max 77 uA5
Peak sink current I(GATE)EN= High to Low; V(GATE) – V(SRC) = 5 Vtyp 2370 mA5
discharge switch RDSON RDSONEN = High to Low; V(GATE) – V(SRC) = 100 mVmin 0.4 · max 2 Ω5
Charge Pump source current (Charge pump on) I(VCAP)V(VCAP) – V(VS) = 7 Vmin 162 · typ 300 · max 600 uA5
Charge Pump sink current (Charge pump off) I(VCAP)V(VCAP) – V(VS) = 14 Vtyp 5 · max 10 uA5
Charge pump voltage at V(VS) = 3.2 V V(VCAP) – V(VS)I(VCAP) ≤ 30 uAmin 8 V5
Charge pump turn on voltage V(VCAP) – V(VS)min 10.3 · typ 11.6 · max 13 V5
Charge pump turn off voltage V(VCAP) – V(VS)min 11 · typ 12.4 · max 13.9 V5
Charge Pump Enable comparator Hysteresis V(VCAP) – V(VS)min 0.45 · typ 0.8 · max 1.25 V6
V(VCAP) – V(S) UV release at rising edge V(VCAP UVLO)min 5.7 · typ 6.5 · max 7.5 V6
V(VCAP) – V(S) UV threshold at falling edge V(VCAP UVLO)min 5.05 · typ 5.4 · max 6.2 V6
Overvoltage threshold input, rising V(OVR)min 1.165 · typ 1.25 · max 1.333 V6
Overvoltage threshold input, falling V(OVF)min 1.063 · typ 1.143 · max 1.222 V6
OV Hysteresis V(OV_Hys)typ 100 mV6
OV Input leakage current I(OV)0 V < V(OV) < 5 Vmin 12 · typ 50 · max 110 nA6
GATE Turnoff delay during EN/UVLO tUVLO_OFF(deg)_GATEV(EN/UVLO) ↓ to V(GATE-SRC) < 1 V, C(GATE-SRC) = 4.7 nFtyp 2 us6
GATE Turnoff delay during OV tOVP_OFF(deg)_GATEV(OV) ↑ to V(GATE-SRC) < 1 V, C(GATE-SRC) = 4.7 nFtyp 0.6 · max 1 us6

Pins, by the datasheet

8
1 EN/UVLO
Enable and undervoltage-lockout input; connect to VS for always-on operation, drive externally, or use a resistor divider from input supply to ground. · p. 3
2 GND
Ground pin. · p. 3
3 N.C
No connection. · p. 3
4 VCAP
Charge pump output; connect to external charge pump capacitor. · p. 3
5 VS
Controller input supply; connect a 100-nF capacitor across VS and GND. · p. 3
6 GATE
Gate drive output; connect to the gate of the external N-channel MOSFET. · p. 3
7 OV
Adjustable overvoltage input; connect a resistor divider from input supply to ground, or ground OV when unused. · p. 3
8 SRC
Connect to the common sources of external back-to-back N-channel MOSFETs or the source of the high-side switch MOSFET. · p. 3

Parameters

14
Control Input Logic
Active High
Current - Supply
45uA
Features
Overvoltage Protection
Junction Temperature(Max)
150℃
Operating Temperature
-40℃~+125℃
Operating Temperature -
-40℃~+125℃
RDS(on)
2Ω
Standby Current
900nA
Thermal Resistance(Junction to Ambient)
133.8℃/W
Thermal Resistance(Junction to Board)
54.5℃/W
Thermal Resistance(Junction to Case)
72.6℃/W
Type
High Side Switch
Voltage - Supply
60V~60V
Voltage - Supply(Absolute Max)
65V

Order codes

1

Pinout

8
The pins of the LM74502DDF
PinNameType
1EN/UVLOUnspecified
2GNDUnspecified
3N.CUnspecified
4VCAPUnspecified
5VSUnspecified
6GATEUnspecified
7OVUnspecified
8SRCUnspecified

Open-source boards using it

All 6
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    Copilot Lite

    BayLibre/Copilot

    Manage a DUT power and serial through a single USB port, no additional software required.

    80 parts22MIT
  • 2 layers65 × 56 mmCopilot ext-3xUSB, the printed circuit board in 3D

    Copilot ext-3xUSB

    BayLibre/Copilot-extension-triple-usb-2.0

    Extension board for Copilot Lite providing 3 USB 2.0 passthrough channels.

    46 parts2MIT
  • 4 layers70 × 50 mmMotor power poc, the printed circuit board in 3D

    Motor power poc

    Galacs/motor-power-poc

    A POC PCB to test circuit electrical protections and motor control schemes

    165 parts
  • 2 layers60 × 100 mmMasterBoard A, the printed circuit board in 3D

    MasterBoard A

    Gregification/BeeMS

    Battery Management System

    167 parts5MIT
  • 2 layers50 × 105 mmVoltageTap A, the printed circuit board in 3D

    VoltageTap A

    Gregification/BeeMS

    Battery Management System

    144 parts5MIT
  • 4 layers240 × 130 mmTTF Base, the printed circuit board in 3D

    TTF Base

    dermatoid-collab/EVC_FW

    Progetto hardware e firmware del sistema di controllo di un ascensore domestico a trazione (TTF) di LiftingItalia s.r.l. Quattro schede basate su STM32F446, collegate in CAN; il motore è comandato da un VFD.

    420 parts

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Questions

Is there a KiCad symbol and footprint for the LM74502DDF?

Yes. The symbol is EasyEDA_Cloud:LM74502DDFR and the footprint Package_TO_SOT_SMD:TSOT-23-8, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the LM74502DDF?

TSOT-23-8, with 8 pins. Its footprint is drawn on this page.

Where is the LM74502DDF datasheet?

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

Where can I order the LM74502DDF?

JLCPCB lists it as part C3236215, with 2,835 in stock; the sellers' links on this page open their listings.

What can replace the LM74502DDF?

Parts like it in the library: the LM74502HDDF by Texas Instruments, the LM74500QDDFRQ1 by Texas Instruments, the LM74502QDDFRQ1 by Texas Instruments and the LTC4365CTS8#TRPBF by Analog Devices. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the LM74502DDF?

6 boards in 5 repositories on GitHub; the most starred are listed on this page, with their KiCad files.

Parts like it

8