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LMR23625CQDDARQ1 データシート(PDF) 5 Page - Texas Instruments

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部品番号 LMR23625CQDDARQ1
部品情報  SIMPLE SWITCHER 36 V, 2.5 A Synchronous Step-Down Converter
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メーカー  TI1 [Texas Instruments]
ホームページ  http://www.ti.com
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5
LMR23625-Q1
www.ti.com
SNVSAR5 – DECEMBER 2016
Product Folder Links: LMR23625-Q1
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Copyright © 2016, Texas Instruments Incorporated
(1)
For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report, SPRA953.
(2)
Power rating at a specific ambient temperature TA should be determined with a maximum junction temperature (TJ) of 125 °C, which is
illustrated in Recommended Operating Conditions section.
7.4 Thermal Information
THERMAL METRIC (1) (2)
DDA
(8 PINS)
DRR
(12 PINS)
UNIT
RθJA
Junction-to-ambient thermal resistance
42.0
41.5
°C/W
ψJT
Junction-to-top characterization parameter
5.9
0.3
ψJB
Junction-to-board characterization parameter
23.4
16.5
RθJC(top)
Junction-to-case (top) thermal resistance
45.8
39.1
RθJC(bot)
Junction-to-case (bottom) thermal resistance
3.6
3.4
RθJB
Junction-to-board thermal resistance
23.4
16.3
7.5 Electrical Characteristics
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.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
POWER SUPPLY (VIN PIN)
VIN
Operation input voltage
4
36
V
VIN_UVLO
Under voltage lockout thresholds
Rising threshold
3.3
3.7
3.9
V
Falling threshold
2.9
3.3
3.5
ISHDN
Shutdown supply current
VEN = 0 V, VIN = 12 V, TJ = -40 °C to 125
°C
2.0
4.0
μA
IQ
Operating quiescent current (non-
switching)
VIN =12 V, VFB = 1.1 V, TJ = -40 °C to
125 °C, PFM mode
75
μA
ENABLE (EN PIN)
VEN_H
Enable rising threshold Voltage
1.4
1.55
1.7
V
VEN_HYS
Enable hysteresis voltage
0.4
V
VWAKE
Wake-up threshold
0.4
V
IEN
Input leakage current at EN pin
VIN = 4 V to 36 V, VEN= 2 V
10
100
nA
VIN = 4 V to 36 V, VEN= 36 V
1
μA
VOLTAGE REFERENCE (FB PIN)
VREF
Reference voltage
VIN = 4 V to 36 V, TJ = 25 °C
0.985
1.0
1.015
V
VIN = 4 V to 36 V, TJ = -40 °C to 125 °C
0.980
1.0
1.020
ILKG_FB
Input leakage current at FB pin
VFB= 1 V
10
nA
POWER GOOD (PGOOD PIN)
VPG_OV
Power-good flag over voltage tripping
threshold
% of reference voltage
105
107
110
%
VPG_UV
Power-good flag under voltage tripping
threshold
% of reference voltage
92
94
96.5
%
VPG_HYS
Power-good flag recovery hysteresis
1.5
%
VIN_PG_MIN
Minimum VIN for valid PGOOD output
50 μA pull-up to PGOOD pin, VEN = 0 V,
TJ = 25 °C
1.5
V
VPG_LOW
PGOOD low level output voltage
50 μA pull-up to PGOOD pin, VIN = 1.5 V,
VEN = 0 V
0.4
V
0.5 mA pull-up to PGOOD pin, VIN =13.5
V, VEN = 0 V
0.4
INTERNAL LDO (VCC PIN)
VCC
Internal LDO output voltage
4.1
V
VCC_UVLO
VCC under voltage lockout thresholds
Rising threshold
2.8
3.2
3.6
V
Falling threshold
2.4
2.8
3.2


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