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LM22678 Arkusz danych(PDF) 5 Page - Texas Instruments

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Numer części LM22678
Szczegółowy opis  SIMPLE SWITCHER Step-Down Voltage Regulator With Features
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Producent  TI [Texas Instruments]
Strona internetowa  http://www.ti.com
Logo TI - Texas Instruments

LM22678 Arkusz danych(HTML) 5 Page - Texas Instruments

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LM22678, LM22678-Q1
www.ti.com
SNVS585L – SEPTEMBER 2008 – REVISED NOVEMBER 2014
6.6 Electrical Characteristics
Typical values represent the most likely parametric norm at TA = TJ = 25°C, and are provided for reference purposes only.
Unless otherwise specified: VIN = 12 V.
PARAMETER
TEST CONDITIONS
MIN(1)
TYP(2)
MAX(1)
UNIT
LM22678-5.0
VIN = 8 V to 42 V
4.925
5.0
5.075
VFB
Feedback Voltage
V
VIN = 8 V to 42 V, –40°C ≤ TJ ≤ 125°C
4.9
5.1
LM22678-ADJ
VIN = 4.7 V to 42 V
1.266
1.285
1.304
VFB
Feedback Voltage
V
VIN = 4.7 V to 42 V, –40°C ≤ TJ ≤ 125°C
1.259
1.311
ALL OUTPUT VOLTAGE VERSIONS
VFB = 5 V
3.4
IQ
Quiescent Current
mA
VFB = 5 V, –40°C ≤ TJ ≤ 125°C
6
ISTDBY
Standby Quiescent Current
EN Pin = 0 V
25
40
µA
6.0
7.1
8.4
ICL
Current Limit
A
–40°C
≤ TJ ≤ 125°C
5.75
8.75
VIN = 42 V, EN Pin = 0 V, VSW = 0 V
0.2
2
µA
IL
Output Leakage Current
VSW = –1 V
0.1
3
µA
0.1
0.14
RDS(ON)
Switch On-Resistance
–40°C
≤ TJ ≤ 125°C
0.2
500
fO
Oscillator Frequency
kHz
–40°C
≤ TJ ≤ 125°C
400
600
200
TOFFMIN
Minimum Off-time
ns
–40°C
≤ TJ ≤ 125°C
100
300
TONMIN
Minimum On-time
100
ns
IBIAS
Feedback Bias Current
VFB = 1.3 V (ADJ Version Only)
230
nA
Falling
1.6
VEN
Enable Threshold Voltage
V
Falling, –40°C
≤ TJ ≤ 125°C
1.3
1.9
VENHYST
Enable Threshold Hysteresis
0.6
V
IEN
Enable Input Current
EN Input = 0 V
6
µA
TSD
Thermal Shutdown Threshold
150
°C
(1)
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 TI's Average Outgoing Quality Level (AOQL).
(2)
Typical values represent most likely parametric norms at the conditions specified and are not ensured.
Copyright © 2008–2014, Texas Instruments Incorporated
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Product Folder Links: LM22678 LM22678-Q1


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