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LMZ12008 数据表(PDF) 5 Page - Texas Instruments

部件名 LMZ12008
功能描述  SIMPLE SWITCHER Power Module
Download  35 Pages
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

LMZ12008 数据表(HTML) 5 Page - Texas Instruments

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LMZ12008
www.ti.com
SNVS716H – MARCH 2011 – REVISED FEBRUARY 2016
Product Folder Links: LMZ12008
Submit Documentation Feedback
Copyright © 2011–2016, Texas Instruments Incorporated
(1)
EN 55022:2006, +A1:2007, FCC Part 15 Subpart B, tested on Evaluation Board with EMI configuration
(2)
Min and Max 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).
(3)
Typical numbers are at 25°C and represent the most likely parametric norm.
(4)
Refer to BOM in Table 1.
6.5 Electrical Characteristics
Limits 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 = 12V, VOUT = 3.3V
(1)
PARAMETER
TEST CONDITIONS
MIN(2)
TYP(3)
MAX(2)
UNIT
SYSTEM PARAMETERS
ENABLE CONTROL
VEN
EN threshold
VEN rising
1.274
V
over the junction temperature
(TJ) range of –40°C to +125°C
1.096
1.452
IEN-HYS
EN hysteresis source
current
VEN > 1.274 V
13
µA
SOFT-START
ISS
SS source current
VSS = 0 V
50
µA
over the junction temperature
(TJ) range of –40°C to +125°C
40
60
tSS
Internal soft-start interval
1.6
msec
CURRENT LIMIT
ICL
Current limit threshold
DC average
10.5
A
INTERNAL SWITCHING OSCILLATOR
fosc
Free-running oscillator
frequency
314
359
404
kHz
REGULATION AND OVERVOLTAGE COMPARATOR
VFB
In-regulation feedback
voltage
VSS >+ 0.8 V
IO = 8 A
0.795
V
over the junction temperature
(TJ) range of –40°C to +125°C
0.775
0.815
VFB-OV
Feedback overvoltage
protection threshold
0.86
V
IFB
Feedback input bias
current
5
nA
IQ
Non-Switching Quiescent
Current
3
mA
ISD
Shutdown Quiescent
Current
VEN = 0 V
32
μA
Dmax
Maximum Duty Factor
85%
THERMAL CHARACTERISTICS
TSD
Thermal Shutdown
Rising
165
°C
TSD-HYST
Thermal shutdown
hysteresis
Falling
15
°C
PERFORMANCE PARAMETERS(4)
ΔVO
Output voltage ripple
BW at 20 MHz
24
mVPP
ΔVO/ΔVIN
Line regulation
VIN = 12 V to 20 V, IOUT= 8 A
±0.2%
ΔVO/ΔIOUT
Load regulation
VIN = 12 V, IOUT= 0.001 A to 8 A
1
mV/A
η
Peak efficiency
VIN = 12 V VOUT = 3.3 V, IOUT = 5 A
89.5%
η
Full load efficiency
VIN = 12 V VOUT = 3.3 V, IOUT = 8 A
88.5%


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