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LM43601-Q1 Datasheet(PDF) 6 Page - Texas Instruments

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No. de pieza LM43601-Q1
Descripción Electrónicos  3.5-V to 36-V, 1-A Synchronous Step-Down Voltage Converter
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI1 - Texas Instruments

LM43601-Q1 Datasheet(HTML) 6 Page - Texas Instruments

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LM43601-Q1
SNVSAA0B – JULY 2015 – REVISED NOVEMBER 2017
www.ti.com
Product Folder Links: LM43601-Q1
Submit Documentation Feedback
Copyright © 2015–2017, Texas Instruments Incorporated
Electrical Characteristics (continued)
Limits apply over the recommended operating junction temperature (TJ) range of –40°C to +125°C, unless otherwise stated.
Minimum and Maximum limits are specified 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 = 12 V, VOUT = 3.3 V, FS = 500 kHz.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
(1)
Specified by design
(2)
Measured at package pins
VOLTAGE REFERENCE (FB PIN)
VFB
Feedback voltage
TJ = 25ºC
1.009
1.016
1.023
V
TJ = -40ºC to 125ºC
0.999
1.016
1.039
ILKG-FB
Input leakage current at FB pin
FB = 1.016 V
0.2
65
nA
THERMAL SHUTDOWN
TSD
(1)
Thermal shutdown
Shutdown threshold
160
ºC
Recovery threshold
150
CURRENT LIMIT AND HICCUP
IHS-LIMIT
Peak inductor current limit
2.07
2.45
2.71
A
ILS-LIMIT
Valley Inductor current limit
0.94
1.1
1.25
A
SOFT START (SS/TRK PIN)
ISSC
Soft-start charge current
1.17
2.2
2.85
µA
RSSD
Soft-start discharge resistance
UVLO, TSD, OCP, or EN = 0 V
16
POWER GOOD (PGOOD PIN)
VPGOOD-HIGH
Power-good flag overvoltage tripping
threshold
% of FB voltage
110%
113%
VPGOOD-LOW
Power-good flag undervoltage tripping
threshold
% of FB voltage
83%
90%
VPGOOD-HYS
Power-good flag recovery hysteresis
% of FB voltage
6%
RPGOOD
PGOOD pin pulldown resistance
when power bad
LM43601-Q1: VEN = 3.3 V
40
125
Ω
LM43601-Q1: VEN = 0 V
60
150
LM43601A-Q1: VEN = 3.3 V
69
150
LM43601A-Q1: VEN = 0 V
150
350
MOSFETS(2)
RDS-ON-HS
High-side MOSFET ON-resistance
IOUT = 1 A
VBIAS = VOUT = 3.3 V
419
RDS-ON-LS
Low-side MOSFET ON-resistance
IOUT = 1 A
VBIAS = VOUT = 3.3 V
231


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