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LM53600AQDSXTQ1 Datasheet(PDF) 8 Page - Texas Instruments

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Part # LM53600AQDSXTQ1
Description  Automotive Step Down DC-DC Converter
Download  44 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM53600AQDSXTQ1 Datasheet(HTML) 8 Page - Texas Instruments

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8
LM53600-Q1, LM53601-Q1
SNAS660B – JUNE 2015 – REVISED FEBRUARY 2016
www.ti.com
Product Folder Links: LM53600-Q1 LM53601-Q1
Submit Documentation Feedback
Copyright © 2015–2016, Texas Instruments Incorporated
Electrical Characteristics (continued)
Limits apply over 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
Vcc_UVLO_hyst
Input under voltage lock-out
hysteresis
Hysteresis below Vcc_uvlo
190
mV
IFB
Input current from FB to AGND LM53600-Q1-ADJ, FB = 1 V
20
nA
Vref
Reference voltage for ADJ
option only
Tj = 25°C
0.993
1
1.007
V
0.985
1
1.015
RRESET
Rdson of RESET output
50
120
Ω
TSD
Thermal shutdown rising
threshold(1)
151
167
185
°C
TSDF
Thermal shutdown falling
threshold(1)
140
157
TSD_hyst
Thermal shutdown
hysteresis(1)
10
Dmax
Maximum switch duty cycle(1)
Fsw = 2.1 MHz
76%
While in frequency fold back
96%
(1)
125°C is worst case temperature for load regulation. Layout is critical since adjustable option does not have an AGND terminal.
(2)
See Auto Mode Operation and IQ_VIN in Detailed Description for the meaning of this specification and how it can be calculated.
7.6 System Characteristics
The following specifications are ensured by design provided that the component values in the typical application circuit are
used. These parameters are not ensured by production testing. Limits apply over 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
Vin_min
Minimum input voltage for full
functionality at 500-mA load, after
start-up
VOUT = 3.3 V
3.55
V
Minimum input voltage for full
functionality at 100% of max rated
load, after start-up
VOUT = 3.3 V
3.8
V
Vout_3_3V
Output voltage for 3.3-V option
VIN = 4.0 V to 36 V, IOUT = Maximum
recommended load current
3.23
3.3
3.37
V
VIN = 3.8 V to 36 V, IOUT=100 µA to
100 mA, typical value in Auto Mode
3.23
3.33
3.39
Vout_5V
Output voltage for 5-V option
VIN = 5.8 V to 36 V, IOUT = Maximum
recommended load current
4.9
5
5.1
V
VIN = 5.5 V to 36 V, IOUT=100 µA to
100 mA, typical value in Auto Mode
4.9
5.05
5.125
Vout_ADJ
Output voltage ADJ option
VIN = VOUT + 0.6 V to 36 V, IOUT =
100 mA, FPWM mode
–2%
+2%
VIN = VOUT + 0.6 V to 36 V,
IOUT=100 µA to 100 mA, Auto mode
–2%
+2.5%
Load regulation for ADJ option(1)
VIN = VOUT + 1 V to 36 V, IOUT = 0 A
to 1 A, TJ = 125°C, FPWM mode
–1%
IQ_VIN
(2)
Input current to VIN node of DC/DC
utilizing the LM53600-Q1/LM53601-
Q1
VIN = 13.5 V, VOUT = 3.3 V, IOUT = 0
A
23
µA
VIN = 13.5 V, VOUT = 5 V, IOUT = 0 A
30
VDROP1
Minimum input to output voltage
differential to maintain regulation
accuracy, without inductor DCR drop
VOUT=3.3 V, IOUT=1000 mA, +2/–3%
output accuracy
0.6
V


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