LM53600-Q1, LM53601-Q1
SNAS660D – JUNE 2015 – REVISED MAY 2021
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7.4 Thermal Information
LM53600-Q1,
LM53601-Q1
THERMAL METRIC(1)
UNIT
DSX (WSON)
10 PINS
46.2
Rθ JA
Rθ JC
Rθ JB
φJT
Junction -to-ambient thermal resistance
Junction -to-case (top) thermal resistance
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
31.5
Junction -to-board thermal resistance
20.9
Junction- to-top characterization parameter
Junction-to-board characterization parameter
Junction-to-case (bottom) thermal resistance
0.3
φJB
21.0
Rθ JC(bot)
4.1
(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
Limits apply to the recommended operating junction temperature range of –40°C to 150°C, unless otherwise noted. Minimum
and maximum limits are ensured through test, design or statistical correlation. Typical values represent the most likely
parametric norm at Tj = 25°C, and are provided for reference purposes only. Unless otherwise stated the following conditions
apply: Vin = 13.5 V.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VFB
Initial output voltage accuracy Vin= 3.8 V to 36 V Tj=25°C, Open
Loop
–1%
1%
Vin= 3.8 V to 36 V, Open Loop
–1.5%
1.5%
IQ
Operating quiescent current;
measured at VIN pin
Vin= 13.5 V, Not switching Vbias= 5 V
6.5
Vin= 13.5 V, Not switching Vbias= 5 V,
Tj= 85°C
16
80
µA
µA
IB
Bias current into BIAS pin for Vin= 13.5 V, Not switching Vbias= 5 V,
adjustable versions and FB pin Mode = 0 V
for fixed versions
46
1.8
3.6
ISD
Shutdown quiescent current;
measured at VIN pin
EN = 0, VIN = 13.5 V Tj = 25°C
EN = 0, VIN = 13.5 V Tj = 85°C
Rising
3
Vin_UVLO
Minimum input voltage to
operate
3.2
3.75
V
V
Vin_UVLO _hyst
Vreset_OV
Minimum input voltage
hysteresis
Hysteresis
0.2
0.3
0.35
RESET upper threshold
voltage
Rising, % of Vout
Falling, % Vout
105%
106.5%
110%
Vreset_UV
RESET lower threshold
voltage
92%
94%
1%
97%
Vreset_guard
Magnitude of RESET lower
threshold difference from
steady state output voltage
Steady state output voltage and
RESET threshold read at the same
TJ, and VIN
3.9%
Vreset_hyst
RESET hysteresis as a
percent of output voltage set
point
Vreset_valid
Minimum input voltage for
proper RESET function
50 µA pull-up to RESET pin, EN = 0
V, Tj = 25°C
1.5
0.4
0.4
0.4
V
V
50 µA pull-up to RESET pin, Vin =
1.5 V, EN = 0 V, Tj = 25°C
Low level RESET function
output voltage
0.5mA pull-up to RESET pin, Vin =
13.5 V, EN = 0 V
VOL
1mA pull-up to RESET pin, Vin =
13.5 V, EN = 3.3 V
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