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LM2670S-ADJ Datenblatt(PDF) 6 Page - Texas Instruments

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Teilenummer LM2670S-ADJ
Bauteilbeschribung  LM2670 SIMPLE SWITCHER짰 High Efficiency 3-A Step-Down Voltage Regulator With Sync
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Hersteller  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
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LM2670S-ADJ Datenblatt(HTML) 6 Page - Texas Instruments

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LM2670
SNVS036K – APRIL 2000 – REVISED JUNE 2016
www.ti.com
Product Folder Links: LM2670
Submit Documentation Feedback
Copyright © 2000–2016, Texas Instruments Incorporated
(1)
All room temperature limits are 100% tested during production with TA = TJ = 25°C. All limits at temperature extremes are specified
through correlation using standard Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level
(AOQL).
(2)
Typical values are determined with TA = TJ = 25°C and represent the most likely norm.
6.7 Electrical Characteristics – 12 V
PARAMETER
TEST CONDITIONS
MIN(1)
TYP(2)
MAX(1)
UNIT
VOUT
Output voltage
VIN = 15 V to 40 V,
100 mA
≤ IOUT ≤ 5 A
11.76
12
12.24
V
over the entire junction temperature
range of operation –40°C to 125°C
11.64
12.36
η
Efficiency
VIN = 24 V, ILOAD = 5 A
94%
6.8 Electrical Characteristics – All Output Voltage Versions
Specifications are for TA = TJ = 25°C unless otherwise specified. Unless otherwise specified VIN = 12 V for the 3.3 V, 5 V and
Adjustable versions, and VIN = 24 V for the 12 V version.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
DEVICE PARAMETERS
IQ
Quiescent current
VFEEDBACK = 8 V for 3.3-V, 5-V, and ADJ versions,
VFEEDBACK = 15 V for 12-V Versions
4.2
6
mA
ISTBY
Standby quiescent
current
ON/OFF pin = 0 V
50
100
µA
over the entire junction temperature
range of operation –40°C to 125°C
150
ICL
Current limit
3.8
4.5
5.25
A
over the entire junction temperature range of operation
–40°C to 125°C
3.6
5.4
IL
Output leakage
current
VIN = 40 V,
soft-start pin = 0 V
VSWITCH = 0 V
200
µA
VSWITCH = –1 V
16
15
mA
RDS(ON)
Switch ON-resistance
ISWITCH = 5 A
0.15
0.17
Ω
over the entire junction temperature
range of operation –40°C to 125°C
0.29
fO
Oscillator frequency
Measured at
switch pin
260
kHz
over the entire junction temperature
range of operation –40°C to 125°C
225
280
D
Duty cycle
Maximum duty cycle
91%
Minimum duty cycle
0%
IBIAS
Feedback bias current VFEEDBACK = 1.3 V, ADJ version only
85
nA
VON/OFF
ON/OFF threshold
voltage
1.4
V
over the entire junction temperature range of operation
–40°C to 125°C
0.8
2
ION/OFF
ON/OFF input current
ON/OFF pin = 0 V
20
µA
over the entire junction temperature
range of operation –40°C to 125°C
45
FSYNC
Synchronization
frequency
VSYNC (pin 5) = 3.5 V, 50% duty cycle
400
kHz
VSYNC
SYNC threshold
voltage
1.4
V


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