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LMZ23605 Datasheet(PDF) 4 Page - Texas Instruments

Part # LMZ23605
Description  LMZ23605 5-A SIMPLE SWITCHER짰 Power Module With 36-V Maximum Input Voltage
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

LMZ23605 Datasheet(HTML) 4 Page - Texas Instruments

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LMZ23605
SNVS659I – MARCH 2011 – REVISED AUGUST 2015
www.ti.com
6.3 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
MIN
MAX
UNIT
VIN
6
36
V
EN, SYNC
0
5
V
Operation junction temperature
−40
125
°C
6.4 Thermal Information
LMZ23605
THERMAL METRIC(1)
NDW
UNIT
7 PINS
RθJA
4-layer Evaluation Printed-Circuit-Board, 60 vias, No air
12
Junction-to-ambient thermal
flow
°C/W
resistancet(2)
2-layer JEDEC Printed-Circuit-Board, No air flow
21.5
RθJC(top)
Junction-to-case (top) thermal resistance
1.9
°C/W
(1)
For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report, SPRA953.
(2)
RθJA measured on a 3.5-in × 3.5-in 4-layer board, with 3-oz. copper on outer layers and 2-oz. copper on inner layers, sixty thermal vias,
no air flow, and 1-W power dissipation. Refer to application note layout diagrams.
6.5 Electrical Characteristics
Limits in standard type are for TJ = 25°C unless otherwise specified. 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 = 12 V, VOUT = 3.3 V
PARAMETER
TEST CONDITIONS
MIN(1)
TYP(2)
MAX(1)
UNIT
SYSTEM PARAMETERS
ENABLE CONTROL
1.279
V
VEN
EN threshold trip point
VEN rising
over the junction temperature
1.1
1.458
(TJ) range of –40°C to +125°C
EN input hysteresis
–21
µA
VEN-HYS
VEN > 1.279 V
current
SOFT-START
50
µA
ISS
SS source current
VSS = 0 V
over the junction temperature
40
60
(TJ) range of –40°C to +125°C
tSS
Internal soft-start interval
1.6
ms
CURRENT LIMIT
over the junction temperature
5.4
A
ICL
Current limit threshold
DC average
(TJ) range of –40°C to +125°C
INTERNAL SWITCHING OSCILLATOR
Free-running oscillator
711
812
914
kHz
fosc
Sync input connected to ground.
frequency
fsync
Synchronization range
650
950
kHz
Synchronization logic zero
over the junction temperature
0.4
V
VIL-sync
Relative to AGND
amplitude
(TJ) range of –40°C to +125°C
Synchronization logic one
over the junction temperature
1.5
V
VIH-sync
Relative to AGND.
amplitude
(TJ) range of –40°C to +125°C
Synchronization duty cycle
15%
50%
85%
Sync DC
range
Dmax
Maximum Duty Factor
83%
(1)
Minimum and Maximum limits are 100% production tested at 25°C. Limits over the operating temperature range are ensured through
correlation using Statistical Quality Control (SQC) methods. Limits are used to calculate Average Outgoing Quality Level (AOQL).
(2)
Typical numbers are at 25°C and represent the most likely parametric norm.
4
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