7.4 Thermal Information (continued)
THERMAL METRIC
(1)
LM74502-Q1
LM74502H-Q1
UNIT
DDF (SOT)
8 PINS
R
θJB
Junction-to-board thermal resistance 54.5 °C/W
Ψ
JT
Junction-to-top characterization parameter 4.6 °C/W
Ψ
JB
Junction-to-board characterization parameter 54.2 °C/W
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report, SPRA953.
7.5 Electrical Characteristics
T
J
= –40°C to +125°C; typical values at T
J
= 25°C, V
(S)
= 12 V, C
(VCAP)
= 0.1 µF, V
(EN/UVLO)
= 3.3 V, over operating free-air
temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
S
SUPPLY VOLTAGE
V
S
Operating input voltage 4 60 V
V
(S_POR)
VS POR Rising threshold 3.9 V
VS POR Falling threshold 2.8 V
V
(S POR(Hys))
VS POR Hysteresis 0.67 V
I
(SHDN)
Shutdown Supply Current V
(EN/UVLO)
= 0 V 1 µA
I
(Q)
Operating Quiescent Current I
GND
60 µA
ENABLE INPUT
V
(EN_UVLOF)
Enable/UVLO falling threshold 1.14
V
V
(EN_UVLOR)
Enable/UVLO rising threshold 1.24
V
(ENF)
Enable threshold voltage for low I
Q
shutdown
0.67 V
V
(EN_Hys)
Enable Hysteresis 75 mV
I
(EN)
Enable sink current V
(EN/UVLO)
= 12 V 5 µA
GATE DRIVE
I
(GATE)
Peak source current V
(GATE)
– V
(SRC)
= 5 V, LM74502-Q1 45 µA
I
(GATE)
Peak source current V
(GATE)
– V
(SRC)
= 5 V, LM74502H-Q1 11 mA
Peak sink current
EN/UVLO= High to Low
V
(GATE)
– V
(SRC)
= 5 V
2370 mA
RDS
ON
discharge switch RDS
ON
EN/UVLO = High to Low
V
(GATE)
– V
(SRC)
= 100 mV
2 Ω
SOURCE VOLTAGE
CHARGE PUMP
I
(VCAP)
Charge Pump source current (Charge
pump on)
V
(VCAP)
– V
(S)
= 7 V 300 µA
Charge Pump sink current (Charge
pump off)
V
(VCAP)
– V
(S)
= 14 V 5 µA
V
(VCAP)
– V
(IN)
Charge pump voltage at V
(S)
= 3.2 V I
(VCAP)
≤ 30 µA 8 V
V
(VCAP)
– V
(IN)
Charge pump turn on voltage 11.6 V
V
(VCAP)
– V
(IN)
Charge pump turn off voltage 12.4 V
V
(VCAP)
– V
(IN)
Charge Pump Enable comparator
Hysteresis
0.8 V
V
(VCAP UVLO)
V
(VCAP)
– V
(S)
UV release at rising
edge
6.5 V
LM74502-Q1, LM74502H-Q1
SNOSDE0 – FEBRUARY 2022
www.ti.com
ADVANCE INFORMATION
6 Submit Document Feedback
Copyright © 2022 Texas Instruments Incorporated
Product Folder Links: LM74502-Q1 LM74502H-Q1
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